After a moderately successful attempt at embryo transfer (ET) in 2015, and a very poor result in 2016, our program this year has been by far the most successful.
We programmed 6 Poll Dorset ewes for flushing this year and on Feb 6 flushed 46 embryos from those ewes. That’s 7.7 embryos per donor, easily our best result. Well worth the effort.
What did we do differently? Well the ewes were definitely on a rising plane of nutrition. They were fed a small amount of barley (400- 500 gms every second day) and had a large square bale of lucerne/clover hay that had had some rain on it before it was baled. They also had a slight green pick of some summer grasses. We also tried to stress them a little less. Their paddock was adjacent to the yards, but not one we moved through daily.
The best donor ewe was a 2015 drop ewe 150310 who had lambed in August 2016 and reared her single lamb. She produced 13 embryos.
Estimated progeny performance for the et matings:
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