Showing posts with label exotic breeds. Show all posts
Showing posts with label exotic breeds. Show all posts

April 23, 2014

New Zealand agricultural history. No 16. Importing exotic sheep breeds

 
Importation of exotic sheep breeds
Second MAF importation
Quarantine station at Hopuhopu
Veterinary inspection
MAFQual veterinarian Peter Hoyle

 Dr Clive Dalton

Hopuhopu quarantine station
Hamilton MAFQual veterinarian Peter Hoyle’s  memories



 I was new boy on the block and had some experience in quarantine while working in the UK as a state veterinarian. So I got the job nobody else wanted, to provide veterinary supervision of the Hopuhopu quarantine station for the sheep imported from Finland and Denmark as embryos. 

With members of the Ruakura Genetics team, we thrashed out some rules of procedure and structural requirements to ensure a credible disease confinement programme. 
Photo: Peter Hoyle, happily retired in Vanuatu 2014 where there is no sheep.  Local dogs cleaned up the last few!

The Hopuhopu property owned by Tainui was known to be infected with Ovine Johne’s Disease (OJD), and we devised a programme to attempt to clear infection ahead of the imported animals arrival, as we needed to import local sheep onto the station to be embryo recipients during the intensive multiplication phase.   So another programme was devised to try to avoid importing OJD with these Romney recipient ewes.

MAFTech technical officer Ian Malthus, rattling the feed bucket 
to move the sheep at Hopuhopu


The imported purebred exotic breed sheep arrived as weaners from Somes Island and had never been out of doors.  They were accustomed to being hand fed so the easiest way to get them to go places was to walk in front and rattle a bucket. They had never seen a dog before, and the first dog they met got a very thorough physical going over by them - much to the dog’s embarrassment and disgust.

Duties
  • My duties involved regular visits for the following jobs: 
  • For animal health and examination of sick and dead animals.   
  •  For veterinary oversight of the embryo transfers done at the multiplication stage in the Hopuhopu woolshed surgery.
  • To advise on routine disease control measures.
  • To advise on quarantine procedures.
  • In the final stages, to supervise the post mortem examination of the entire original imported purebreds at the Ruakura Abattoir.  Here we found that all our efforts to eliminate OJD had failed, but there was no evidence of Scrapie from examination of brain tissue.
 
Peter Hoyle providing post-operative care to sheep after Embryo Transfer.  21 March 1986.  Photo by Jaap Jasperse, NZ Farmer magazine






I remember one incident when I arrived on the station and found a ewe acting very strangely and making me suspect that it could be Scrapie.  To my relief, I found that she had been overdosed with oestrogen, which explained her odd behavior. Finding scrapie at that stage would have been the mother and father of all disasters!

Alan Julian
With another sick sheep, specialist veterinary pathologist Alain Julian then at the Ruakura Animal Health Lab diagnosed a rare genetic kidney disease (Mesangiocapillary Glomerulonephritis) from samples I submitted taken from a Finn lamb. 

Alan sent sections of the kidney to Dr Dick Barlow in Scotland and they confirmed the disease.  The good news was that it was not Scrapie!  
 
We also had problems with Necrotic Laryngitis in the Texels at Hopuhopu. This can be nasty and lead to death by suffocation.  It is also called 'chronic ovine laryngitis' caused by a bacterium with the monika of 'Fusobacterium necrophorum'

Other breeds of sheep can get this too.  Feeding too much dry feed can bring it on - and the sheep were fed plenty of that on the station to keep them growing.


Photos from  Hopuhopu  provided by Mike Wolland, Technical Officer at Hopuhopu


One of the many ammunition bunkers on the Hopuhopu army training area.



Truck washing  after sheep arrived from Soames Island maximum quarantine station

 
Hopuhopu quarantine station needed facilities for handling sheep and wool and doing surgery. 

 
MAF Technicians Graham Hasard (left) and Mike Wolland preparing recipient ewes for embryo transfer.  Photo by Jaap Jasperse of NZ Farmer, 21 March, 1986.



 
Operating on embryo recipients in Hophopu woolshed surgery.  Photo by Jaap Jasperse of NZ Farmer, 21 March, 1986.

 
Mike Wolland and Texel ram at Hopuhopu quarantine station


 Farmer reactions to the Texels
But my most telling memory was the reaction of  visiting sheep farmers, in particular the Perendale breeders when the saw the Texels for the first time. In no time they were queuing up to put their names down to purchase some when quarantine was finalised. They probably recognised the Cheviot in the Texel which was also part of the Perendale too, so thought there would be good ‘nicking’ among the genes of the two breeds.

Quality Texel rams that every farmer wanted, especially Perendale breeders.

New Zealand agricultural history. No 25. Importing exotic sheep breeds


The Awassi importation from Israel 1990 
More expenditure thanks to MAF 
 Memories from Dr Robin Tervit:  Awassi in Israel

By Dr Clive Dalton

Information obtained from paper presented by Dr Jock Allison to NZ Institute of Primary Industry Management, December 2006.

Awassi importation
Interest developed in New Zealand over the importation of fat-tailed sheep from the Middle East as a potential export earner for the live sheep trade from New Zealand, which had been developed in fits and starts in the 1980s. The Awassi and Najdi breeds commanded top money and there were a few operators willing to give the business a go.  Dr Jock Allison led the charge after working in Saudi Arabia first in 1978 and later in 1985. The company formed traded under the name of Awassi New Zealand Ltd.



Dr Jock Allison. Photo: Otago Daily Times

 Israel was seen as the best source of sheep for a history of tight veterinary control, and it had the ‘Improved Awassi which was a strain selected for milk production for 50 years. These animals were very productive, producing in excess of 500 litres of milk per lactation, being behind only the East Friesian as a milk producer.
     


·      The import protocol for Awassi embryos from Israel took three years to develop in conjunction with MAF and the Maximum Security Quarantine Advisory Committee (MSQAC). From 1987 onwards Jock visited Israel several times to seek available animals and check the health status of the Israeli flocks through their Israeli Ministry of Agriculture. 

·      Dr Elisha Gootwine from their main Israeli research station was a great help, as Invermay had given them some Booroola rams in about 1983 which over time, Elisha has introduced these Booroola genes into the Awassi to form the AFEC (Fecundity gene) Awassi. This had increased litter size by about 0.6 in the AFEC Awassi animals. 

·       The company paid for MAF Ruakura veterinarian Gary Clark to travel to Israel to do an official health assessment for MAF, and after that negotiate the conditions for the importation. This required considerable funding, and after the 1987 crash funding for such long term and risky programmes was scarce. 
Awassi ewes used for milk production.  
 Photo: Internet
·      Eventually the company got most of the funding from an Australian group that were interested in the Awassi for milk production. The company had received interest from Saudi Arabia from one of the royal princes, but in the end the prince couldn’t bring himself to accept cooperation with Israel for an importation. 

·      The company eventually purchased 65 ewes and 6 rams from a Kibbutz in Northern Israel. As the import conditions defined any outbreak of Foot and Mouth disease within 25 km of the sheep would terminate the programme, the sheep were moved south into the Negev desert to a Moshav where horticultural crops were grown and no livestock kept.  A quarantine unit was set up in a disused turkey shed about 100 km south of where Foot and Mouth disease had ever been recorded in Israel, so it was assumed that all would be safe. 

·      The company leased four shipping containers and converted them into living quarters and a surgery and embryo room. 

Dr Robin Tervit
·      Dr Robin Tervit  went to Israel to freeze the first lot of embryos, and Gavin Struthers was the MAF vet required to supervise the washing of the embryos before freezing. A MAF technician had previously supervised the hormone injection programmes, and Jock did the embryo recovery surgery. Gavin and his wife went on holiday before they were to return for the second round of embryo recovery a month later. Julia Aspinal traveled to Israel to undertake the second and third lot of embryo freezing.

·       Prior to the time of the third embryo collection, tensions were escalating in the Middle East and war looked imminent. MAF then approved the sensible view that Israeli veterinarians could supervise the inspection and washing of the embryos - a decision which would have saved the company a lot of money on travel for MAF staff needed for two embryo collections.

·      About the time of the third collection of embryos, Scud Missiles started to fly into Israel courtesy of Saddam Hussein, and MAF wanted Julia to return home immediately. The company’s Israeli contacts said she was much safer where she was instead of trying to leave the country through Tel Aviv. Again common sense prevailed and she returned to NZ about a week later.

·      Jock says that it was a great team effort but the embryo recovery was disastrous with only 153 embryos being frozen from the 65 ewes collected three times.  Anything that looked remotely normal was frozen, including many embryos, which might have usually been rejected. With British breed ewes it would be expected to freeze at least 800 embryos from the same number of operations. Having put years of work and several hundred thousand dollars into the project to this stage, this was quite a stressful time for all involved in the company.

 Awassi ewe in NZ. Photo: Willowbank Internet

More expenditure thanks to MAF
Jock’s report continues.  A further situation with MAF caused considerable further over-expenditure on the programme by the company. The importation conditions required donor ewes to be tested for a number of diseases at least 10 days after the last collection of embryos. Here is Jock’s record of the saga:

·      Previously I had proposed in a letter to the Maximum Security Quarantine Advisory Committee (MSQAC) that we should be allowed to collect embryos at slaughter, as washed embryos constituted a far lower risk than importation of samples of lymph nodes, spleen, spinal cord from donors for inoculation into kid goats as a ‘scrapie bioassay’. 

·      This letter got lost and finally a few months later someone found it, and I received official confirmation from the CVO Dr Peter O’Hara that we could collect embryos at slaughter. Too late! 

Skud missile. Photo: Internet
·      If we had known this decision about the time of my first request, then the programme could have been done in a little over a month without shifting the sheep to the south. Embryos could have been collected at slaughter at the time of the second heat, and this would have avoided the later chaos in Israel with attacks from Iraq and the first Gulf War. The monetary implications were that we had to spend another $150,000, this clearly being of no particular interest to MAF. 

·      Because of the Gulf War we couldn’t get the embryos out of the country until months later. When I personally had to steer the canister through the Israeli customs and back to NZ. 

·      After arrival, the 153 embryos were implanted into recipient ewes on Somes Island, and after transfer to quarantine at Flock House they became 43 live lambs.

Awassi sheep at Flock House secondary quarantine unit.  
Photo: Dr Deric Charlton
·      About this time, the principal of the main Australian investor wanted to take over much of the management of the programme, and in my view he was making a considerable hash of things, so I decided to sell my 20% share of the company Awassi New Zealand. 

·      After spending considerable amounts of time over 5 years, I was disappointed to leave the project when the hardest part was completed. However, pragmatically it was clear that I was never going to get on with the Australian principal so quitting was the best strategy. 
·      The payment received gave me the capital to embark upon the East Friesian importation which has been much more important for New Zealand. 

·      It is notable however that the Awassi sheep (3/4 Awassi and better) are now being exported in significant numbers from Perth to the Middle East, as a result of the multiplication of an Australian import from Cyprus, plus some of our animals. The sheep milking operations envisaged by the initial Australian partners have not been commercially successful. 

Flock of Awassi sheep taken By Dr Jock Allison on a trip to Turkey


 Memories from Dr Robin Tervit:  Awassi in Israel


Dr Robin Tervit - safely in retirement
I phoned Jock Alison a couple of times before I went to Israel, as the news reported fighting between Israel and Jordan. Jock said that all was OK and so off I went after promising my wife Helen that I would not go to Jerusalem as there were foot/tank patrols and people arrests. 

Jock met me, and we hopped into his rental Subaru (Israel was full of Subaru’s as Subaru had decided to sell cars to Israel which meant that they could not sell to the rest of the middle east) and headed off to the embryo facilities. 



I kept seeing signs to Jerusalem and yes, Jock had missed the turn-off and we drove through the city at night seeing signs to the famous sights and a number of foot patrols.

Eventually we got out of the city and drove down the shore of the Dead Sea, through a road block and eventually to our destination. The surgery was conducted in a converted container. Unfortunately the Awassi sheep didn't like our superovulation protocols and hence we got disappointing results.

There was not much evidence of the war though a few jets flew over very close to the ground.

We only saw a bit if Israel as we drove to the airport and I actually spent no money in Israel. This caused me a bit of grief at the airport as no-one could understand how I could spend a week or so and not spend any money. I was interrogated for over an hour by two different officials and eventually let go – although they followed me until I got on to the plane.

New Zealand agricultural history. No 26. Importing exotic sheep breeds


Impact of importations on New Zealand sheep industry
NZ Sheep Breeders Association (NZSBA) registrations
What happened to White Headed Mutton, White Headed Marsh?
What happened to the Oxford Down, Gotland Pelt, Awassi?

By Dr Clive Dalton

The impact of the exotic sheep importations
There was clearly a massive burst of enthusiasm in the first years after the exotic sheep importations to register the new breeds with the NZ Sheep Breeders Association (NZSBA), so that many purchasers of the sheep could become official ‘stud breeders’ with their purebreds as fast as possible.  There was clearly money to be made!

The 1990-2002 New Zealand National Sheep Breeders Association (NSBA)
The flock book over this period records the following details which show what happened to the breeds: 
  • 1990 NZSBA flock book records entries for Danish Texel, Finnish Landrace, Gotland Pelt, Oxford Down and White Headed Marsh.
  • 1991 breed societies for the Texel, Oxford Down and Finnish Landrace formed.
  • 1993.  Oxfore Down was renamed Oxford.
  • 1995.  11 in-lamb ewes and 4 rams registerd by Silverstream East Friesians.  There were 49 flocks in the 1997 flock book.
  •  2002.  Last remaining Gotland Pelt stud withdrew from NZSBA.
  • 2014 NSBA website.   Only Finnsheep, East Friesian, Texel, and Oxford breeds are listed.

What happened to the White Headed Mutton?
The Oldenburg or White Headed Mutton sheep imported by MAF in 1972 all went into a large hole on Mana, but while they were there, John Dobbie reckons from what he saw of them that they had nothing to contribute which was any better than the modern easy-care Romney.  The Muttons he said was on a par with the old-style Romney with poor lambing percentage and plenty of lambing problems. 


The White Headed Marsh
These are considered to be different to the ‘Mutton’, and there is one flock of White Headed Marsh sheep listed in the Rare Breeds Conservation Society of NZ.  It says they came from sheep which arrived in New Zealand in the 1980s (being imported from Denmark) and were released from quarantine in 1990.  These are the AE imported sheep.  Google both breeds and you get the same photo (above).

What happened to the Oxford Down?

After release from quarantine at Hopuhopu, the unsold animals went to the MAF Research Station at Tokanui near Te Awamutu.  Robin Hilson says he took some over, but couldn’t sell them, and because of their poor lambing rate, he said they were never a success and his were culled. 
There are five breeders listed with the NZSBA so a few must have survived. Clearly they have made zero impact in New Zealand, and even a small proportion has never been included in any composite breed. The breed's dark face was a major fault.  The photo (off the Internet) shows a typical ram all done up for the UK show ring.


What happened to the Gotland Pelt?

  One story is that most of them were sold to an Australian buyer soon after they cleared quarantine. The other is that a few were farmed for a short while on a property near Feilding, before being sold to a farmer in the Takaka area. Small numbers seemed to spread around the country before being bought by a farmer in the Southern Wairarapa who owned a mill in Petone that made cloth for Peter Jackson’s films.  But surprisingly there are 27 listed owners of Gotlands in the Rare Breeds Conservation Society of NZ in very small flocks 2014.  


What happened to the Awassi?
There is one flock listed in the Rare Breeds Conservation Society of NZ. The great live sheep export industry to the Middle East, which was a major target for the breed, never really got going because of animal welfare issues both on the journey and at their destination.  But this trade could develop again.

Awassi ewes at Flock House.  
Photo: Dr Deric Charlton