Lamb growth rate is holding up well
Published 29/07/2015 | 02:30
Despite the recent rainfall, grass growth is still hovering around 40kg dry matter per hectare per day on the sheep grazing ground at Lyons. This is probably partly linked to the slightly lower than average air and soil temperatures for this time of the year.
Lamb growth rate is holding up well however. In the first two weeks after weaning we saw a drop in lamb growth rate to 190g per day.
These growth rates have recovered to 225g per day. This is quite positive considering the fastest growing lambs from these groups have been slaughtered.
Looking at growth rate figures over two week periods can be sometimes misleading, so when we look at growth rate from birth to 18 weeks of age we see a figure of 265g per day.
The most recent group of lambs to be slaughtered were sent to the factory on Friday July 15.
These had an average live weigh of 45.5kg and killed out at 44pc to give a carcase of just over 20kg.
Ewes were treated with pour-on to prevent fly strike on July 15 and lambs were treated with a short withdrawal product on July 20.
As we are currently running eight separate groups of sheep in the experimental farmlets of four groups of lambs and four groups of ewes the workload with gathering the sheep is greatly increased.