Showing posts with label fencing. Show all posts
Showing posts with label fencing. Show all posts

August 12, 2014

New Zealand agricultural history. Whatawhata Hill Country Research Station. Joe McLean

 
By Dr Clive Dalton
(Whatawhata Research Station scientist 1968-1979)

Joe McLean - research station farm manager

Joe McLean
Research on hill country farming needed
In 1952 Joe McLean went to work at the ‘Ruakura Hill Station’ where his father was a fencer. The Ministry of Agriculture and Fisheries had purchased the block to do sheep and beef research to help farmers increase production after WWII. The station of 2000 acres of rough hill country on the Raglan deviation, had been cleared from native bush in earlier times, but a lot of it had reverted to scrub, bracken and gorse due to lack of investment and technology. 

In 1952, the farm had virtually no fences, and even the boundary fence was in disrepair, and there were no decent farm roads or tracks to get around the property.  Joe said the Ministry of Works had the job of solving the access problems – and they had all the gear and expertise to do an excellent job.

Horse power
Horses were used to provide transport for men and materials around the farm, and fence battens and wire were packed out on pack saddles on the horses.  To save work, strainer posts were cut from the large Totara stumps left over from the initial bush clearing, and they were easy to saw and split for fence battens. Chainsaws were not available at that time.

Fencing


Fencing and fence maintenance took up a large amount of Joe’s time, as did the demands of scientists for subdivision for their increasing number of trials to improve and manage pastures.  There must have been hundreds of miles of fence in the station.

Top dressing by air 
Fertiliser had been spread by hand on hill country up to the 1950s, when Ossie James pioneered top dressing first using tiger moth planes, and then much later, the American Fletcher arrived in New Zealand which was a leftover from the Vietnam war.  As a result of the 1939-45 war, there were many young men with flying experience who were keen to enter the developing top dressing industry.

To increase pasture production, the hills were starved of productive grass and clover species (seed spread from the air), which then needed lime and phosphate to help them grow.   Ossie James who was a great personal friend of Joe McLeans had the solution by flying on superphosphate and lime on to the hills.

Joe helped Ossie develop the hopper to hold the fertiliser under the plane, and the bunker to hold and protect the fertiliser from the weather, as well as the loader fitted on the front of a truck or tractor to fill the hopper on the plane.
A lot of this development was don the neighbouring Alf Moore’s airstrip and on other Raglan airstrips.

Joe had many wind-blown rides in Tiger Moth planes, sitting in seat in front of the pilot.  Joe’s boss and the first station Superintendent was Ted Clarke, and Ted’s son Dr Neil Clarke, who was brought up on the station, remembers his Dad relating how he had a rides in a Tiger Moth holding on the spars of the wing, to point out to the pilot which bits of the farm he wanted topdressing.

 In the 1970s, under Director Dr Doug Lang, Joe designed and oversaw the building of an airstrip on the station with the advice of James Aviation.  It was in the middle of the farm to save flying time and fuel.  It has a spectacular take off down a steep hill and a similarly impressive landing for empty planes coming up hill again.

The electric fence
The other great innovation, which helped to revolutionise hill country farming, was the development of the electric fence at Ruakura Research Centre by Doug Phillips, and then it’s commercialisation by Bill Gallagher. Bill consulted Joe on many aspects of hill country fencing in the early stages, and methods of erection.

Gallaghers purchased sawmills in Australia to mill the hard native Jarrah timber for fence posts, which they marketed as ‘insultimber’.  The wood was so dense that current couldn’t flow in them, but they were heavy to handle and were overtaken by plastic.

Due to the steep topography, in the initial clearing, the bush had been left in some of the gullies, which Joe said in later years had been a good idea to prevent erosion. Slips were a common feature of steep slopes in wet winters on the Maeroa ash soils.

In getting power to outlying paddocks, it was always tempting for farmers to run wires, high in the air across deep gullies, rather that take the fence down one steep side and up the other. These high wires were lethal for top dressing planes and had to have visual markers hung on them.  But even so, they were still dangerous and nobody was more aware of this than Joe McLean.

Water supply
Joe spent endless hours developing and maintaining the farm water supply, which became essential once more paddocks were needed for trials. Joe designed a complete farm water reticulation scheme, and carefully mapped it so pipes could be found by others and for future planning.  Water had to be pumped from main creeks to water tanks on top of hills for gravity feed to the rest of the farm.

It was a familiar site to find Joe crouched on a roadway by the side of a small hole he’d dug, 'rolly' cigarette hanging in the side of his mouth, and a small fire in the hole heating a plastic pipe to make a watertight joint.

 Then when more houses were built on the station in the 1970s and 1980s as staff expanded, Joe had their water and septic tank needs to worry about, as well as other maintenance issues.  There was always problems and complaints from tenants about water quality, which came from a main creek out the back of the farm, and which was very weather dependent, as after heavy rain was not good to produce clean washing. New families arriving had to accept a few weeks of gut problems until they ‘got adjusted!

On one occasion a large Friesian cow had fallen down the hill into this main creek and ended up on it’s back, very dead.  There was no way it could be pulled out, so Joe had the solution through his loyal staff member and fencer Jack Jones. Jack had ‘contacts’ at the Te Pahu quarry and a few sticks of gifted gelignite into the cow solved the problem beautifully, leaving a pristine creek in a matter of a mini seconds. You had to look hard to see any evidence of the cow on the surrounding hills.

 The homestead and hostel 

The old Homestead sign rescued by Ray Armstrong
The single men at the station were housed in the hostel’s six rooms under the eagle eye of Mrs (Ma) Smith. She fed them like fighting cocks, and provided food for shearers and visitors from all parts of the world who came to see the station’s work.  Joe was her right-hand man – and dealt with all her needs and complaints.  There were also a smaller single women’s quarters and Ma Smith made doubly sure they were kept well separated.  Ma Smith had good hearing and was very alert to squeaking spring beds!

Joe McLean was revered by a whole range of station Superintendents and Directors, as research expanded. The station changed to be controlled by a Director and dropped the title of the Ruakura Hill Station to be the Whatawhata Hill Country Research Station around 1967. 

As stated above, Ted Clarke was the first Superintendent, followed by veterinarian Dr Gordon Edgar, then Ian Inkster (‘overweight Ian’ Joe called him) and then Dr Doug Lang as the first Director with more independent administrative powers.   Doug was followed by station scientist Graeme Hight, and then Dr Peter Rattray who saw the station wind down.

A famous scientist was Dr Monika Wodzika Tomaszewska whose husband Matthew Wodzika was a shepherd on the farm and sadly died a young man. Monika moved to Ruakura after his death and I took her place, joining the staff from UK in 1968.

L to R:  Clive Dalton. Doug Lang and Minister of Agriculture (and Raglan MP) Doug Carter, visiting the station in 1975.  Photo by Ruakura photographer Don 'whiskers' McQueen taken at the top yards
 Sheep yards and cattle yards
Joe oversaw the building of endless sets of sheep and cattle yards all over the farm, doing both the planning and building. When Joe started at the station, there were no cattle yards, and the first set he built was at the woolshed by the Raglan road.  This building also included the main office, smoko room and scientists offices and lab.

Shepherds complained endlessly about how long it took to get stock from the back of the farm to the yards for routine handling, so pressure was on Joe in the early 1970s for a large new set of sheepyard as well as a cattle yard in the middle of the farm with the luxury of a covered roof.

The new woolshed 

New woolshed and yards in the centre of the farm. Location for Open Days
 The Ministry of Works got the contract to build a new woolshed, but the allocated money ran out before it was fully finished. Joe finished the job by using many small requisitions for material (with Doug Lang’s encouraged approval), without approval by the Research director (Dr Wallace) at Ruakura.  Joe and Doug were masters at this ‘art’ of getting around public service regulations.

 Joe had designed a cover for the new sheep yards but the Ministry of Works wouldn’t approve it, as it had to be made to stand a one-in-a-hundred year cyclone, so it ended up with massive laminated beams and decimation of the budget.

The swimming pool on the station was a classic joint venture by Doug and Joe.  It was officially a fire prevention reservoir for the houses! Photo below shows the Dalton kids (outside pair) and Peterson kids (centre pair) ready to dive in - about 1967.





Joe often joined the station kids for a well-earned swim at the weekends - there must have been 20 kids around the pool at any one time - and they always had friends from town to come and enjoy the fun.  Every kid on the station learned to swim in the pool

 Joe also had to manage the hygiene and testing of the pool and do all the ordering of chemicals. It was one of the few fire safety resevoirs with such high health standards -but no bureurcrat ever questioned this.

 Annual Field days
At the annual Field Day in Ruakura week in June, there would regularly be 1000 farmers who would trek their way (by foot and on wheels) up to the top yards to see scientists reporting their research. Even buses were driven up the one lane track to the terror of many passengers. 

To relieve visitors and staff from the suicide track, Joe oversaw the building of a new track down from the yards so a looped one-way traffic system could be used. This again was another McLean major engineering job.

Dog motels
The ‘dog motel’ was another masterpiece of Joe’s work. Before the top yards were built, the dogs were housed in kennels right outside the old woolshed and offices, and their barking and smell were always a challenge to conversation with visitors to the station, especially those from MAF head office in Wellington. 

So Joe had the job of designing a new set of kennel motel units for the 20 dogs, and it was a masterpiece of design and construction.  There was a spring coming out of the steep hill above the kennels, which Joe channeled into the motel to provide a constant supply of clean running water.

At Field days, Joe knew that farmers came to criticise, but they also quietly came to copy Joe’s ideas. Nothing made Joe happier.

Neil Woods - station engineer
Joe was greatly assisted in his innovative ideas by Neil Woods who was the workshop engineer. Difficult challenges took time, and impossible ones took a little longer for Neil who invented and made a mind-boggling range of gear.  These included bridges to be dropped across creeks, cradles to do laparoscopy on sheep, trailers to carry bulls, gates of all sorts and sizes, cattle stops galore, and a classic loading ramp with counterbalance weights so it could fit any size of truck deck. 


Paper work
Joe had an amazing admin load to keep the paper work going.  This was endless with materials needed by everyone on the station – right down to the meat from the Ruakura abattoir for the dogs.  All these orders required Joe to make a weekly trip (and more if needed), to the store at Ruakura in the station van or truck.  Beside the requisition book on Joe's desk was an official government ash tray made of Bakelite, full to overflowing with buts.

Weather station
The weather station was another of Joe’s responsibilities with daily collection of data to be sent to the Met office in Wellington.  Rangi Wood (Neil’s wife) did the reading, but Joe was her stand-in and had to supervise the data and make sure it got to Wellington each month on time.


Gorse 

Gorse was the biggest pest on all the Raglan hills, and spraying it was an annual battle which Joe did himself, and then supervised contractors like Bill Binder who worked at the station for decades.  They never won the war!  Bill Binder's spray unit was an old army troop carrier, which carried about a mile of hose that Bill dragged through man-high blocks of gorse.  His skin was permanently pink from the dye in the 245T spray. Bill lived well into his 90s so he must have had a strong tolerance of carcinogens.
 

 Retirement
Joe ended his days in retirement with his wife and lifelong supporter Molly, living on the station, looking out on all his hard work, but with the satisfaction that he had made a major contribution to New Zealand hill country research and farming.  We put him in twice  for a New Zealand honour , but he refused to accept one. That was the calibre of the man – he never wanted public recognition or thanks.  His death was sadly mourned by hundreds of those who had worked at the station over many decades, and from all parts of the world.

At the opening of the new buildings on the station around 1980,(which were subsequently moved to the Ruakura campus),  there was a station gathering at which I read my poem, and presented Joe and Neil Woods with ‘The Whatawhata Long Service Medal’ for their contribution to research.  It was a polished brass cow tag that we used before plastic tags were invented.  They should both have had real ones.


An Ode to Joe McLean, 
Farm manager for over 40 years service. Died 2008
By Clive Dalton 
The fence is down
The creek is blocked
The water's all aflo,
We're heading for a balls up
If we can't find blardy Joe.

The rails are on
The posts are in
But the concrete's drying slow,
Jock's bringing in the blardy cows
For God's sake send for Joe.

The shearing's due
The shed's not ready
The Min. of Works are slow,
We'll never finish it ourselves
Just leave the job to Joe.

The track has gone
The hillside's cracked
Any minute she could go,
We'll lose the whole damn'd paddock
We'd better send for Joe.

Jack's cut the pipe
The water's brown
The nappies ‘ill never clean,
Carol's talked to Rangi
And she's after Joe McLean.

A run cow’s died
She's in the creek
She's poisoning the domestic flow,
Jack's blown her out with jelly
Who showed him - it was Joe.

The weather's right
The fern's been lit
Back Range is all aglow,
Oh shit - the fire's in the bush
Jeeesus - send for Joe.

Ruakura’s phoned
They're seeking blood
The requisition's not been seen,
They're asking who approved the job
We all said - Joe McLean.

For all of us
Who spent time here
There's one thing we all know,
That we owe a massive vote of thanks
To our idol we call JOE!

And when that day
St Peter calls
Cos' his gorse has begun to grow,
He’ll open up the pearly gates
And say - Come in mate, you must be Joe!


Further reading
Farrelly, Elizabeth, J. (1986).  Whatawhata Hill Country Research Station.  An historical review.  Ejay Enterprises.  









January 21, 2009

Cattle farm husbandry - cattle for meat

Cattle, farming, husbandry, meat, the law, slaughter, marketing, meat schedules, selling options, dressing (killing out percentage), transport, hormone growth promoters.

By Dr Clive Dalton


Meat cattle need careful handling as bruises don't show on the outside!

Meat and the law

After over 100 years in the meat exporting business, a mass of legislation has grown up in New Zealand to protect producers, processors and exporters, so farmers need to be aware of this fact and where necessary comply with it. Remember the customer is always right! So there is:
  1. The Meat Act 1981
  2. The Biosecurity Act 1993
  3. The Animals Product Act 1999
  4. The Biosecurity (Ruminant Protein) Regulations 1999
  5. The Biosecurity (Animal Identification Systems) Regulations 1999

When are cattle ready for slaughter?

Would you make more money sending these cattle to the meat
worksor keep them a bit longer to put some more weight on them?
What's pasture growth going to be like in the next few months?
What should you do? Where do you get advice from someone you can trust!

The main question in farming cattle for meat is when will they be ready for slaughter? This can be a tricky question because of the Beef Carcass Classification or Grading System used in New Zealand, and you would be wise to become familiar with it and seek good advice before you do anything.
  • Beef in New Zealand is either “prime” beef which is exported as cuts, either as chilled or frozen. Chilled beef gets the top price. Then there is “processing or manufacturing” beef which is boned, boxed and frozen before export.
  • The grading system is designed to farmers for what the meat company considers the export market wants, and penalise them for what is not wanted such as over-fat animals.
  • It assesses the maturity, sex, fat cover over the 12th rib and muscling of the carcass (called the GR measurement), to work out the payment rate.
  • There are three muscling classes and four fat classes. Fat cover is especially important these days as consumers generally don’t want fat. Some fat is required but not in excess.
  • The range in the fat covers in each class goes from L at 3mm, P from 3-10mm, T from 11-16 to finally F at 17mm or over. Fat class P is usually the one quoted in schedules published in the farming press.
  • If you sell steers, heifers (with no more than 6 permanent incisors), or cows (with more than 6 permanent incisors), then these carcasses will be graded. Bulls are not graded so you get paid on weight alone.
  • There is also a grade for vealers. These include maiden heifers, steers or bulls that are not showing masculine characteristics up to 14 months of age. Few of these are produced these days.
  • So you need to work out the weight range that the carcass will fall into for its sex, then the fat class, and then its muscling score.
  • Then you have the challenge of working out other options. For example, would you be better off to keep the stock longer and go up another weight class and be paid for more weight, but risk the penalty of going up a fat class too and being penalised. Can you see why you may need some advice?

Typical meat schedule prices
The table below is an example of a typical Meat Schedule available from meat companies or published on specialist websites for a particular week for North Island beef. For South Island take off 10c/kg.

Key points from the table
  • It lets you see how things are this week and how things have changed recently.
  • The real skill is to predict what’s going to happen in the weeks ahead and whether you should buy or sell taking into account the weather, pasture growth, what’s happening in the US economy, changes in the exchange rate, saleyard rumour and downright lies!
  • There’s a challenge for a smart young IT person to write some software for a palm computer to predict all this for you – but it would take a lot of the fun out of it.

Killing out or dressing percentage
  • The meat company pays you for the weight of the carcass, so now comes the question of how much of the live animal you sent to the meat plant weighed out as a carcass.
  • The carcass weight, taken immediately after slaughter when hot is the animal’s total live weight, less the weight of intestines and their contents, head, feet, tail, testicles and penis, kidneys and channel fat, and fat trimmed off other parts. In other words it’s the weight of the animal after its carcass has been “dressed”.
  • So the terms Killing Out Percentage (KO%) or Dressing Percentage are used and are calculated by dividing the hot carcass weight by the live weight and multiplying this by 100 over 1.

[(Hot carcass weight)/(Live weight without fasting)] x [100/1]

The values vary quite a bit depending on the way cattle were fed – see table below:

  • It’s important to remember that if you weigh stock before they leave the farm, they will vary greatly in the amount of “fill’ or gut contents, and this may come as a big surprise when you see the KO%. Gut fill in adult cattle can range from 12 to 22% of the live weight of a beast.
  • The longer you empty stock out by leaving them on a bare paddock or yard before slaughter, the less the loss will be.

  • Meat company buyers who come to your farm are very experienced at looking at live animals and predicting their carcass weight. However, having an on-farm live weight is a great help for them to give you more confidence in their predictions.
  • The killing sheets from the meat company give you the final true picture including killing charges, and it’s interesting and often frustrating to see on these sheets what defects like bruising and old injection abscesses cost you, especially if these were not have been of your doing!

Fit for human consumption?
  • After slaughter and processing, every carcass whether for export or the domestic market is checked by a meat inspector from Asure (New Zealand) Ltd on behalf of the New Zealand government by the Ministry of Agriculture and Forestry, to make sure it is fit for human consumption.
  • Any carcass that fails to pass inspection is condemned and rendered down for blood and bone fertiliser
  • After passing inspection, the carcass is weighed while still warm, and graded by a meat grader employed by the meat company and regularly audited by AusMeat.

Transporting stock to slaughter
Prime cattle for slaughter are a quality export product so remember the following:
  • At least a week before transport, sort out stock for slaughter into their new groups to give them time to sort out their new social order. So they wait for slaughter and end their days with their mates.
  • This is to avoid stress which affects the pH of the meat. This reduces shelf life when sold as a higher-value chilled product in supermarkets rather than just frozen.
  • Ideally meat should have a pH of around 5.5 and it’s acceptable up to 5.8. This will produce good red meat that will be excellent to eat. In a range from 5.8 to 6.2, the meat begins to be unacceptable and tough.
  • Above 6.2 and up to pH of 7.0, the meat will be relatively tender but will go a dark colour and will spoil quickly and have little flavour on cooking. Dark meat when displayed in a supermarket has little customer appeal and shoppers assume it is “going off”.
  • If the stock have horns, get the vet to dehorn them (using an anaesthetic) at least a month before slaughter and never buy stock with horns in future. The vet’s account will remind you of this!
  • After sorting or any vet treatment, put stock on good pasture to build up their glycogen levels.
  • On the day of transport, muster them quietly and let them empty out on a bare paddock or yard with water for at least 8 hours without disturbance. This will keep them cleaner in the truck and reduce the effluent that may contaminate the highway.
  • If the transporter is late - don’t let your stock be sacrificed by rushing them, in a bid to make up lost time.
  • Load stock quietly without sticks or dogs and only minimal use of an electric probe if needed. Check for any protruding nails or bolts that will damage hides and bruise meat when loading and fix these before the truck arrives.
  • Ensure the loading ramp is safe and the truck can back up squarely to it, leaving no gap for legs to get down and cause injury so they cannot be sent for slaughter.
  • By law, animals must be able to take their full weight on all four feet to be acceptable for transport. Any animal that cannot will require a veterinary certificate before the truck operator or meat works will accept it.
  • A meat processing plant does not accept defective stock or what used to be known as “mercy kills” such as stock with broken legs. Such animals now have to go for pet food which also now has special requirements regarding drug withholding periods.
  • All stock must also be accompanied by the correct Tb documentation (on the Animal Status Declaration or ASD) before the truck driver will pick them up.
  • Only use reliable transport operators who will give your stock a quiet ride to the meat plant. If transport staff are rough with your stock, don’t use them again and tell the company why. You have been preparing a high quality product for perhaps 14-18 months and to have it ruined by poor handling on its last day is unacceptable.
  • Make sure the truck is clean before your stock are loaded - it is supposed to be.
  • Ensure the truck operator does not mix your stock with others to save space. This is where fighting and bruising happens.
  • The frustrating thing is that when your stock get to the works, they are often hosed down with cold water from a high-pressure hose to remove dung from their coats, or they are walked through a bath up to their bellies in cold water. This, together with all the strange smells at the works certainly adds to stress and cannot help the quality of the meat.

Presentation of cattle for slaughter
Again because of legal requirements, meat companies have strict standards about stock accepted for slaughter, so they meet the very strict standards set by the overseas markets. As a result the companies require an “Animal Status Declaration” (ASD).
  • If you have any pangs of frustration when filling this in, just remember we have no choice as farmers are in the food business, and red meat is a health food. You’ve got to believe it!
  • The question asking if the animals were born on your property and if not have you had them for 60 days or more is very important here. If you have just purchased the stock, you should have obtained an Animal Status Declaration form from the previous owner.
  • If you didn’t, then “the worst case situation” applies which means the meat company cannot slaughter them for a 60-day withholding period. This can cost you extra feed and they may also get overfat.

Hormone growth promotants (HGP)
A growth promotant based on a natural oestrogen can be used legally in New Zealand with a trained technician present at the time of application. This is claimed to improve growth rate (23% increases are quoted), feed conversion and meat yield.

All treated animals must carry a special orange tag in one ear to warn future buyers and meat companies of the treatment as meat and offal is banned from some markets. Users must keep a full auditable record of treatments. See your veterinarian for details.

Despite the benefits to farmer profit, some meat companies now comment that they would prefer not to have to process HGP beef as they are under increasing pressure from non-EU markets not to send them the product. The extra care needed in processing ads greatly to their costs and some are signaling that they will be discounting the product in the future.


Disclaimer This material is provided in good faith for information purposes only, and the author does not accept any liability to any person for actions taken as a result of the information or advice (or the use of such information or advice) provided in these pages.

January 15, 2009

Cattle farm husbandry - fencing for cattle

Cattle, farming, husbandry, fencing, the law, methods, power fencing, recommendations, advice, wire spacings, trouble shooting.

By Dr Clive Dalton

Are your stock secure?
Making sure your stock stay where you put them is extremely important for many reasons. A major one is your legal responsibilities if they escape causing damage to property, and worse still cause an accident on the public highway. So having good fences is crucial.

Fence types

NZ Standard boundary fence

A legal New Zealand standard boundary fence that will be
free of maintenance for at least ten years.
  • This is the basic legal boundary fence required under the law (The Fencing Act 1978) in New Zealand.
  • It is the best stock-proof fence there is, but it’s the most expensive.
  • It has got to be a seven-wire, fully-battened fence, and is the perfect stock-proof fence if well erected.
  • It usually has posts 5 m apart with 5 battens equally spaced between them.
  • The gaps between the seven wires from ground level to top are at intervals of 120mm, 120mm, 130mm, 150mm, 170mm, 200mm and 250mm.
  • Some people still put a barbed wire on the top for cattle but this should be avoided. They argue that it's easier to keep the battens in place. Proper stapling will fix this problem.
  • For more stock security electrified wires can be added (see below).
There is no need for barbed wire on fences any more. It damages hides and
injures stock and people. It should be banned from farms.

Electric or power fencing

This is a very cost-effective solution to restraining cattle and New Zealand has led the world in its development. It can be used as a stand-alone power fence, or be added on to a standard fence. If your standard fence is in bad repair and cash is short, adding a hot wire to it is a good way to get a few more years out of it.

There's a wide range of power fencing energizers on the market.
Some will power over 200 km of fence.

Advantages of power fencing
  • Low cost.
  • Easy to construct with light materials. It’s much easier to get power fencing materials out to the back of a farm than with standard fencing.
  • It lasts a long time as there’s minimal stock pressure on it.
  • It’s easy to use for subdivision of paddocks improving grazing control.
  • It’s easy to modify to suit the stock and if you find it’s in the wrong place, it’s easy to shift.
  • It does not damage stock and if there is a disaster like a smother, stock in panic will easily be forced through it without injury.
  • It can be aesthetically more acceptable than a permanent fully battened fence.

How does a power fence work?
It’s important that you understand this to get the most out of it.
  • A power unit or energiser puts out current along the fence. The energizer can be fed from the mains supply, from a battery or a solar unit.
  • The critical part of the fence is the earth peg or pegs. They act like an aerial and collect electrons from the ground.
  • If you have a big energiser then you need a big earth.
  • The earth rule is to count 1 2 3 3. This says:
  • Have ONE continuous wire from power source to earth pegs. The wire needs to be attached with nuts and bolts and not just twisted.
  • Use ground pegs TWO metres long and knock them all the way into the ground.
  • Have THREE ground pegs.
  • Knock the pegs in THREE metres apart, if possible in a wet area.
  • The energiser should be earthed at least 10m away form telephone cables and other electrical earths including water pipes.
  • When stock out in the paddock or away at the back of the farm touch the wire, the current goes through them (delivering the shock) and back to the earth peg. The animal in effect completes the circuit and if it doesn’t, then there is no shock.
  • Modern energizers will power up to 300km of fence and at long distances, it’s important to run an earth wire along the fence to help the current find the earth contact easier.

Are power fences safe?
  • Yes they are, and they would not be allowed to be manufactured (especially in New Zealand for export to the world) if they were not.
  • But it’s a relevant question , as modern energisers are getting bigger to power longer distances of fence to be more cost effective.
  • The fence shock is normally around 4000 volts but the pulse only lasts for 0.0003 seconds which is more than enough to get a response from animal or human!
  • The pulse is very low amps. It’s amps that cause injury.
  • But saying that, a long continuous series of pulses will kill wet new-born calves if they stumble and get trapped on a hot wire.
  • There is also a risk to people who get caught up with a fence and keep getting constant pulses to their heads, especially if they are in water and well earthed. Poor state of health will increase their risk of injury.
  • Be aware about a bit of physics called “impedance”. This is the build up of current at the end of a very long power fence. So if you are at the very back of a hill country farm, you (or the dog) may find the fence to be putting out as much as 8000 volts. The dog will certainly remember the experience longer than you will!
  • If the power at the end of the fence exceeds 4000-5000 volts then it needs fixing to reduce it.
Poor fence performance check list
Client surveys by manufacturers of power fencing have found that 40% of fences are not working to their full capacity for a number of common faults leading to low voltage. Here they are, so you can check your fence:
  • Poor earth. This is top of the list and most people don’t know because they are scared to grab the fence, and they don’t invest in a voltmeter to check the power and find out where the problem is. Keep checking the earth pegs and soaking them with water frequently if they are not in a wet area.
  • Bad or corroded connections.
  • Poor knots in wire. Don’t use reef knots use a knot with plenty of twists to make good contact, or use the modern connections where the end of the wires lie parallel and are clinched together.
  • Long lengths of wire that is too thin restricting the power flow.
  • Long distances of single-wire fence (again with poor earth).
  • Rusty wire which can be a problem with salty air.
  • Animals standing on dry areas (insulated) and only touching live wires and no earth wire on the fence.
  • Leakage through poor insulation. Old plastic insulators that need replacing.
  • Leakage through excess vegetation contacting the fence. Spray the area under the fence.
  • Avoid running fences within 10m of telephone lines. Many phone lines are buried along the side of the road and may be directly under your power fence.

A meter to check voltage and indicate where a fault is,
is a lot more accurate than a bit of hand-held grass,
especially of you don't enjoy a shock.

Wire spacings on power fences for cattle


Single-wire fences
  • This is for quiet cattle like dairy cows that respect a power fence.
  • It is best suited to strip grazing where it is moved regularly.
  • Wire can be 750mm from the ground.
  • Posts can be 10-15m apart
Two-wire fences
  • This is good for permanent internal fencing for quiet cattle that respect a power fence.
  • For dairy cows or very quiet cattle spacings between wires from the ground upwards can be 350mm then 450mm.
  • You could be better with spacings from the ground upwards of 500mm and 400mm.
  • The top wire can be hot and the lower wire dead. Or both can be hot with a good earth pegs.
  • Posts can be 10-15m apart.
Three-wire fences
  • This is good for permanent internal fencing for quiet cattle that respect a power fence.
  • Wire spacings from the ground upwards can be 300mm, 300mm, 300mm.
  • The top and bottom wires can be hot and the middle one dead.
  • Posts can be up to 10m apart.

Four-wire fences
  • This is good for permanent internal fencing for bigger cattle and bulls but again assuming that they respect a power fence.
  • Spacings between wires from the ground upwards can be 350mm, 250mm, 250mm and 250mm.
  • Posts can be up to 10m apart.
  • The first and third wires from the ground up can be dead and the second and fourth hot.


Outriggers on an existing fence are a good way to
protect it from wear and tear with cattle


Extra points on power fencing
  • Before you start power fencing the farm, draw up a good plan so that different areas of the farm can be isolated by switches conveniently placed around the farm.
  • If you buy stock that are not used to power fences, then they will need time to learn. Put them for a spell in a paddock with a good seven-wire fence with a hot wire about 750 mm from the ground. Leave them in there till the feed gets short and they start fancying the feed in the next paddock!
  • If you have metal gates, make sure there are no leaks from the fence to the gate. Grabbing a hot gate is not a nice experience, especially if it’s your entrance one! Nicely-brought-up people say some funny things when they are surprised by 4000 volts!

Gates
  • These are very important and there is a wide variety of types and sizes.
  • Placement is critical to allow safe access for cattle between paddocks.
  • If strategically placed, they can be used to draft cattle in the paddock.
Good example of four gates together where paddocks join.
Can be used to move and draft stock

Disclaimer This material is provided in good faith for information purposes only, and the author does not accept any liability to any person for actions taken as a result of the information or advice (or the use of such information or advice) provided in these pages.

January 2, 2009

Sheep Farm Husbandry - Fencing for sheep

Fencing basics, fence types, fencing laws, problems, trouble shooting, check lists, power fencing, safety, wire spacings, netting, scrim.

By Dr Clive Dalton

Making sure you can find sheep where you left them has been a challenge for shepherds since domestication. Sheep are the classical “follower” species and if one finds an escape route – the whole flock will follow it in no time. Some sheep are born to be escapologists and they can lead to terrible disasters on steep hill country when one finds a hole in the fence in a hollow, and the rest of the mob push up behind it waiting their turn to follow ending up in a massive smother. Hundreds of sheep can easily die in these events in minutes. The solution for the persistent escaper is the butchers! So having good fences in the correct locations is the first priority of sheep farming.


Fencing law - Fencing Act 1978
Rural fence specifications


Seven or 8 wire Fence
A substantial wire fence, having 7 or 8 wires properly strained, with up to 2 of these wires as galvanised barbed wire, or with 1 galvanised barbed wire and a top rail; barbed wires to be placed in a position agreed upon by the persons interested, or to be omitted if those persons agree; the posts to be of durable timber, metal, or reinforced concrete, and not more than 5m apart, and securely rammed and, in hollows or where subject to lifting through the strain of the wire, to be securely footed, or stayed with wire; the battens (droppers) to be affixed to the wires and of durable timber, metal or plastic, evenly spaced, and not fewer than 3 between posts; the wires to be galvanised and of 2.5mm high tensile steel or 4mm steel or its equivalent; the bottom wire to be not more than 125mm from the ground, the next 3 wires to be not more than 125mm apart; and the top wire or rail to be not less than 1m from the ground.

Nine or 10 wire Fence
A substantial wire fence having 9 or 10 wires properly strained, with or without battens (droppers) or lacing affixed to the wires between the posts or standards; the posts or standards to be durable timber, metal, or reinforced concrete, well and substantially erected, and not more than 5m apart, the top wire not to be less than 1m from the ground surface, the wires to be galvanised, and of 2.5mm high tensile steel or 4mm steel, or its equivalent, the space between the ground and the bottom wire not to exceed 100mm, the bottom 4 wires to be not more than 130mm apart.

Prefabricated (Netting) Fence
A substantial wire netting fence properly strained of a minimum height of 1m; the netting to have at east 7 horizontal wires, and, if necessary, extra wires above or below the netting, one of which may be a galvanised barb wire, all other wires to be galvanised in either 2.5mm high tensile steel or 4mm steel, or its equivalent; the vertical stays of the netting to be galvanised wire, and not more than 305mm apart. Posts or standards to be not more than 5m apart and of durable timber, metal or reinforced concrete, additional battens (droppers) may be installed between the posts if both parties agree; the overall fence to be well and substantially erected.


Fence types


NZ Standard boundary fence
  • This is the basic legal boundary fence required under the law (The Fencing Act 1978) in New Zealand.
  • It is the best stock-proof fence there is but it’s the most expensive.
  • It has got to be a seven-wire, fully-battened fence, and is the perfect sheep fence if well erected.
  • It usually has posts 5 m apart with 5 battens equally spaced between them.
  • The gaps between the seven wires from ground level to top are at intervals of 120mm, 120mm, 130mm, 150mm, 170mm, 200mm and 250mm.
  • So the “escape holes” at sheep height along the bottom are about 400mm long between the battens and either 130mm or 150mm high and these are great sheep stoppers.
  • Goats dig holes at the base of fences that sheep will go through so if you have goats (feral or farmed) on sheep farms, then a hot wire on an outrigger along the bottom is a good investment (see later).
Netting fencing
  • Using wire netting fencing is an easy solution to keep sheep of all sizes at home and it’s quick to erect.
  • It works best on flat country and is not suitable for the ups and downs of hill country.
  • It’s notorious for ripping tags out of sheeps’ ears – but maybe the sheep are to blame and not the fence!
  • The rectangular gaps in the netting are either 150mm or 300mm long and going up from ground level they are 100mm, 100mm, 100mm, 120mm, 140mm, 150mm, and 200mm. So it’s very stock proof for ewes and small lambs.
  • You will need a wire along the top of the netting too and if you run cattle, put a hot wire along the top and never a barbed one.
  • Barbed wire should be banned for the benefit of humans, farm dogs and stock of all species.
Electric or power fencing
This is a very cost-effective solution to keeping in sheep, and New Zealand has led the world in its development. It can be used as a stand-alone power fence, or be added on to a standard fence. If your standard fence is in bad repair and cash is short, adding a hot wire to it is a great way to get a few more years out of it.

Advantages of power fencing
  • Low cost.
  • Easy to construct with light materials. It’s much easier to get power fencing materials out to the back of a farm than with standard fencing.
  • It lasts a long time as there’s minimal stock pressure on it.
  • It’s easy to use for subdivision of paddocks improving grazing control.
  • It’s easy to modify to suit the stock and if you find it’s in the wrong place, it’s easy to shift.
  • It does not damage stock and if there is a disaster like a smother, stock in panic will easily be forced through it without injury.
  • It can be aesthetically more acceptable than a permanent fully battened fence.

How does a power fence work?
It’s important, especially with sheep that carry their own wool insulation, that you understand how a power fence works to get the most out of it.
  • A power unit or energiser puts out current along the fence. The energizer can be fed from the mains supply, from a battery or a solar unit.
  • The critical part of the fence is the earth peg or pegs. They acts like an aerial and collects electrons from the ground.
  • If you have a big energiser than you need a big earth.
  • The earth rule is to count 1 2 3 3. This says:
  • Have ONE continuous wire from power source to earth pegs. The wire needs to be attached with nuts and bolts and not just twisted.
  • Use ground pegs TWO metres long and knock them all the way into the ground.
  • Have THREE ground pegs.
  • Knock the pegs in THREE metres apart, if possible in a wet area.
  • The energiser should be earthed at least 10m away form telephone cables and other electrical earths including water pipes.
  • When the sheep out in the paddock or away at the back of the farm touches the wire, the current goes through the sheep (delivering the shock) and back to the earth peg. The sheep in effect completes the circuit and if it doesn’t then there is no shock.
  • Modern energizers will power up to 360 km of fence and at long distances, it’s important to run an earth wire along the fence to help the current find the earth contact easier.

Are power fences safe?
  • It’s a relevant question, as modern energisers get bigger to power longer distances of fence to be more cost effective. Some will now power over 300km of fence. New Zealand manufacturers defend the safety of their units.
  • The shock is normally around 4000 volts but the pulse only lasts for 0.0003 seconds which is more than enough to get a response from animal or human!
  • There have been cases of new-born and very wet lambs and calves being killed from entanglement with a hot wire and receiving constant shocks for a very long period.
  • The pulse is very low amps and it’s amps that cause injury.
  • But saying that, a long continuous series of pulses will kill wet newborn lambs (and calves) if they stumble their way and get trapped on a hot wire.
  • Hot wires are also lethal to hedgehogs. Their spines hit the wire and they curl up and die. They don’t recoil back from the first shock!
  • Also be aware about a bit of physics called “impedance”. This is the build up of current at the end of a very long power fence. So if you are at the very back of a hill country farm, you (or the dog) may find the fence to be a bit more than the expected 4000 volts. The dog will certainly remember the experience longer than you will!
  • If the power at the end of the fence exceeds 4,000 volts, then something needs fixing

Poor fence performance checklist
Client surveys by manufacturers of power fencing have found that 40% of fences are not working to their full capacity for a number of common faults leading to low voltage. Here they are so you can check your fence:
  • Poor earth. This is top of the list and most people don’t know because they are scared to grab the fence, and they don’t invest in a voltmeter to check the power and find out where the problem is. Keep checking the earth pegs and soaking them with water frequently if they are not in a wet area.
  • Bad or corroded connections.
  • Poor knots in wire. Don’t use reef knots; use a knot with plenty of twists to make good contact, or use the modern connections where the end of the wires lie parallel and are clinched together.
  • Long lengths of wire that is too thin – restricting the power flow.
  • Long distances of single-wire fence (again with poor earth).
  • Rusty wire which can be a problem with salty air.
  • Animals standing on dry areas (insulated) and only touching live wires and no earth wire on the fence.
  • Leakage through poor insulation. Old plastic insulators that need replacing.
  • Leakage through excess vegetation contacting the fence. Spray the area under the fence.
  • Avoid running fences within 10m of telephone lines. Many phone lines are buried along the side of the road and may be directly under your power fence.

Wire spacings on power fences for sheep

Three-wire fences
  • This is a low fence suitable only for internal fencing on small farms with very quiet sheep that respect a power fence.
  • Posts can be up to 10m apart.
  • Wire spacings from the ground upwards can be 200mm, 300mm, 350mm.
  • The top wire can be set up to take current but is always kept switched off to allow safe climbing by people.
  • The power in the lower two wires will keep the sheep in unless they get really short of feed or are panicked. You can always power the top wire if needed.
  • This fence could be used if you run cattle as well as sheep, but another wire on the fence would be better for cattle (see below).
  • It’s very low cost and low maintenance.

Four-wire fences
  • This is suitable for internal fencing for sheep and cattle.
  • Spacings between wires from the ground upwards can be 180mm, 150mm, 225mm and 350mm.
  • Posts can be up to 10m apart.
  • The first and third wires can be dead and the second and fourth hot.
  • Or use spacings from the ground upwards of 160mm, 190mm, 250mm, 300mm.
  • Alternative wires can be hot or you can make it a standard practice that all top wires are prepared to take power but are kept switched off for ease of climbing over.
  • Power the top wire if you have cattle.
  • Some farmers have the bottom wire dead as it is the one most easily shorted by herbage and it allows safe passage for hedgehogs.
Five-wire fences
  • This is suitable for internal fencing for sheep and cattle.
  • Spacings between wires from the ground upwards can be 150mm, 150mm, 190mm, 200mm, and 210mm.
  • Posts can be up to 10m apart.
  • Alternative wires can be hot or only the first and third from the ground upward.
  • You can make it a standard practice that all top wires are powered but kept dead for ease of climbing over.
  • Power the top wire if you have cattle.
  • Some farmers have the bottom wire dead as it is the one most easily shorted by herbage and it too allows safe passage for hedgehogs.
Electricfied netting
  • This is netting made of plastic cord into which hot wires are woven, so all of it is hot.
  • It’s only a temporary fence and is very useful when controlling pasture or crops by strip grazing and other odd jobs around the farm to direct sheep for a short term.
  • If it’s correctly put up and kept tight, it works well. It’s easy to move and transport, and works if no pressured from large numbers of sheep– and where sheep have been trained to respect a shock.
Extra points on power fencing
  • Before you start power fencing the farm draw up a good plan so that different areas of the farm can be isolated by switches conveniently placed around the farm.
  • Put gateways on high points rather than in low points where sheep may rush down hill and smother.
  • If you buy sheep that are not used to power fences then they will need time to learn. Put them for a spell in a paddock with a good seven-wire fence with a hot wire about 500 mm from the ground. Leave them in there till the feed gets short and they start fancying the feed in the next paddock!
  • If you have metal gates, make sure there are no leaks from the fence to the gate. Grabbing a hot gate is not a nice experience, especially if it’s your entrance one! Nicely-brought-up people say some funny things when they are surprised by 4000 volts!

Scrim (Hessian)
  • A large roll of scrim (Hessian) has been used by shepherds to get ewes and lambs into the pens at docking for generations.
  • The ewes and their small lambs cannot see through it, and apart from the ones that jump over, you can drive them into pens or yards. The skill is to keep the pressure on them and never let them have space to get a run at the fence you have created.
  • So if you ever need a visual barrier, a bit of scrim is ideal, being light and not bulky when rolled up.
Disclaimer
This material is provided in good faith for information purposes only, and the author does not accept any liability to any person for actions taken as a result of the information or advice (or the use of such information or advice) provided in these pages.

July 11, 2008

Fencing Glossary

ELECTRIC FENCING

Amp: Unit of current. Watts divided by voltage.
Current: The current and the duration and rate of its flow that causes the shock. Increasing voltage increases current. Current decreases as resistance increases.
AC current: Alternating current as from the mains power supply.
DC current: Direct current from batteries.
Capacitance: Ability to store a charge of electricity.
Capacitor: Stores electrical charges and pulse energy which builds up in the capacitor and is released by the SCR switch into the fence at approximately one per second.
Electrolysis: Corrosion which occurs when different metals are connected in a wet environment such as with electrical connections on a fence line.
Impedance: Combination of resistance, inductance, frequency, and capacitance (sometimes called AC resistance).
Induction: Power transfer without contact. For example charging “dead” or neutral fence wires which run parallel to live ones.
Insulator: Material across which an electric current will not flow.
Joule: Unit of energy. Watt x seconds. The measure of “kick” of a fence pulse.
Leakage: Conductance from the fence line to ground, caused by poor insulators, shorts and growth on the wires.
Measurements:
  • 500 ohms (2mS) – the maximum a human or animal can conduct in the worst conditions, eg with feet and hands in salt water.
  • 5,000 ohms (0.2mS) – the equivalent of a cow touching an electric fence.
Ohm: Unit of resistance. The ohm scale is a reverse one – ie low numbers indicate heavy loads and high number light loads.
Outrigger: Electrified wire attached to a conventional fence supported so it is away from the fence.
Power consumption: Electricity consumption does not increase with leakage on the fence line, because most energisers operate on maximum all the time and the VDRs absorb the unused surplus.
Rectifier: Converts AC to DC.
S.C.R.: Silicon controlled rectifier which is a transistorised pulse switch.
Siemens: Unit of conductance, leakage or load. Reciprocal of ohm. 1 Siemens = 1 ohm, 1 millisiemens (mS) = 1000 ohms.
VDR: Voltage dependent resistor. Prevents voltage of more than 5000 volts from leaving the unit by short circuiting the excess voltage.
Volt: Unit of electrical pressure which causes the current to flow. Voltage + current x resistance.
Watt: Unit of power, both electrical and mechanical. 746 watts = 1horse power.

CONVENTIONAL FENCING

Angle post:
Post placed where a fence changes direction. Needs extra support by stays and tie-backs.
Auger: Tool for boring holes in timber or for boring post holes in the ground for fence posts.
Boundary fence: Definition under the Fencing Act.
A substantial post, batten and wire fence, having not less than seven wires, not more than two of the wires being barbed, barbed wires to be placed in a position agreed upon by the persons interested, or to be omitted if those persons agree: the posts to be of durable timber, metal, stone, or reinforced concrete, and not more than 5.03m apart, and securely rammed and, in hollows or where subject to lifting through the strainof the wires to be securely footed, or stayed with wirep; the battens to be of durable timber or metal, evenly spaced, and not less than four in each space between the posts; the wires to be galvanised and not lighter than No 8 gauge; the barbed wire to have barbs spaced 0.15m apart, and to be galvanised; the bottom wire to be not more than 0.12m from the ground; the three bottom wires to be not more than 0.12m from the ground, the three bottom wires to be not more than 0.12m apart; and the top wire to be not less than 1.14m from the ground; all wires to be strained tightly and fastened to or let through the battens and posts to provide a tight, durable, stock-proof fence. In practice a boundary fence can be modified by agreement of the parties involved.

Other Rural Fence Definitions under NZ Fencing Act 1978

Seven or 8 wire Fence
A substantial wire fence, having 7 or 8 wires properly strained, with up to 2 of these wires as galvanised barbed wire, or with 1 galvanised barbed wire and a top rail; barbed wires to be placed in a position agreed upon by the persons interested, or to be omitted if those persons agree; the posts to be of durable timber, metal, or reinforced concrete, and not more than 5m apart, and securely rammed and, in hollows or where subject to lifting through the strain of the wire, to be securely footed, or stayed with wire; the battens (droppers) to be affixed to the wires and of durable timber, metal or plastic, evenly spaced, and not fewer than 3 between posts; the wires to be galvanised and of 2.5mm high tensile steel or 4mm steel or its equivalent; the bottom wire to be not more than 125mm from the ground, the next 3 wires to be not more than 125mm apart; and the top wire or rail to be not less than 1m from the ground.
Nine or 10 wire Fence
A substantial wire fence having 9 or 10 wires properly strained, with or without battens (droppers) or lacing affixed to the wires between the posts or standards; the posts or standards to be durable timber, metal, or reinforced concrete, well and substantially erected, and not more than 5m apart, the top wire not to be less than 1m from the ground surface, the wires to be galvanised, and of 2.5mm high tensile steel or 4mm steel, or its equivalent, the space between the ground and the bottom wire not to exceed 100mm, the bottom 4 wires to be not more than 130mm apart.

Prefabricated (Netting) Fence
A substantial wire netting fence properly strained of a minimum height of 1m; the netting to have at east 7 horizontal wires, and, if necessary, extra wires above or below the netting, one of which may be a galvanised barb wire, all other wires to be galvanised in either 2.5mm high tensile steel or 4mm steel, or its equivalent; the vertical stays of the netting to be galvanised wire, and not more than 305mm apart. Posts or standards to be not more than 5m apart and of durable timber, metal or reinforced concrete, additional battens (droppers) may be installed between the posts if both parties agree; the overall fence to be well and substantially erected.

Batten:
Used to keep the wires on a fence at equal distances apart.
Breast plate: Piece of timber placed in the ground that supports the stay or a strainer, angle post or corner post. Sometimes called a stay foot.
Bridge spike: Large nail with square head and shank used to attach the decking to a bridge to the stringers (supports).
Cap rail: Top rail on stock yards used to walk along. Top rail on a wooden fence.
Cattle stop: Device made of spaced bars (steel or concrete) over a pit to prevent stock entering an open gateway.
Chain: Imperial measurement of 22 yards, (now 20 metres) used to measure fencing.
Contract: Arrangement between the farmer and fencer to define the work that has to be done in the erection of a fence.
Crowbar: Steel bar sharpened at one end for making holes in the ground. Also used as general lever to move heavy objects. May be called a pinch bar.
Dead man: Anchor to which a strainer, angle post or corner post is tied back. It is buried firmly in the ground.
Dogs: Same as gudgeon.
Dropper: Same as batten. May be made of steel or light chain. Common term in South Island and Australia.
Fence laying: Delivering material to the fence line and laying them out before work starts.
Fence line: The line where the fence has to be erected.
Fencing types:
  • Deer fence – usually made from netting 1.8m high
  • Grass fence – fence made with two low electric wires and grass inbetween
  • Pig fence – usually made of wire netting 1.07m high
  • Panel fence – made from wooden panels or palings
  • Post and rail – make from wooden posts joined by rails
  • Wire fence – 7 wires is the legal requirement for a boundary fence. Other fences can have any number of wires
Foot: Block of wood attached by wire to a post and buried when the posthole is filled. It stops the post being pulled out.
Foots: The plural of foot.
Footings: Same as foot. May describe the material used for the foot, or a foundation for a building.
Fixed foot: Where the foot itself is secured to the post before it is put in the ground.
Fencing pliers: A combination hand tool used to cut and bend wire.
Floodgate: Gate made of battens and wire across a creek that rises and falls with the water level.
Flying fox: Wire between two dead men used to carry fencing material across a gully.
Gate: Structure that closes an entrance.
Gudgeon: The part of the gate hinge assembly that is fixed to the gate post. The hinge straps fit over the gudgeon.
Guide wire: Wire used to define the position of the finished fence. Used to line up the position of each post.
Hinges: Device used to allow the gate to swing – made up of gudgeons and straps.
Hot fence: A traditional fence that has been electrified.
Intermediate post: Post between the strainer posts. May be called line posts.
Jenny: Device for unrolling rolls of wire along a fence line. May be called a spinning jenny or wire spinner.
Knots: Used to join wire. Many types eg figure of 8, reef knot and double loop.
Maul: Large wooden hammer for driving pointed stakes.
Measuring up: Calculating the length of the fence and the materials needed for costing.
Netting: Fencing wire woven into a mesh with varying sized holes.
Peg: Pointed piece of timber used to mark the exact line of the fence.
Pinch bar: Same as crowbar.
Posts: Used to support the wires on a fence. Are described by numbers denoting their diameter.
Post cap: Metal cover for a post to protect it from the weather.
Post driver: Tool or machine for driving pointed posts into the ground.
Post hole: The hole dug in which a post is rammed.
Post hole borer: Machine (hand turned or engine driven) to bore holes in the ground in which to insert posts.
Ram: To consolidate the loose earth around a post.
Rammer: Tool used to ram the loose earth around a post.
Ratchet: Part of a fence strainer to retain the strain while tightening the wires.
Self tapping bolt: Threaded bolt that makes its own threads when screwed into a post.
Standard: A metal post. Common type is the three-sided Waratah standard.
Standard lifter: Lever for pulling standards out of the ground.
Staples: U-shaped and double pointed nails used to fix wires to a wooden post.
Stays: Supports for strainer or angle post.
Stay block: See breastplate.
Stock proof: Describes fence which effectively restrains stock.
Strain: Tension put on fence wires.
Strainer post: Main support post at either end of a fence to which the wires are strained.
Stringer: Main weight-bearing truss in a bridge. Usually made of timber.
Swinging foot: Where the foot is not fixed to the post other than by the foot wire. The foot is rammed separately to the post.
Taranaki gate: Gate made from fence battens and wire pulled tight by a wooden lever.
Tension: The strain put on each wire of the fence.
Tension meter: Device to measure the strain on each wire.
Tie back: See tie wire.
Tie down: See dead man.
Tie wire: Wire that ties the dead man to the post.
Treated post: Post treated with chemical preservative.
Twister: Tool to make a twitch.
Twitch: Twisted tie-wire made from two or more strands.
Twitch stick: Twister made from wood or steel.
Twitch wire: See tie wire.
Wire: There are many kinds of wire, eg plain, high tensile, number 8 and barbed.
Wire spinner: See jenny.
Wire strainer: Device to tighten wires on a fence.