Article
Further testing of Melatonin Receptor 1a for out-of-season reproduction in the Cornell flock and allelic frequencies compared with Romney sheep.
Journal of animal science - 1 May 2017
Posbergh C J, Murphy R J, Thonney M L
Abstract excerpt
Sheep are seasonally polyestrous breeders, meaning they breed when day length shortens in the autumn. Ewes respond to changing day length through chemical pathways involving melatonin receptors. Some breeds, such as Dorset, are known to be less seasonal with many ewes able to breed and lamb year-round. The Melatonin Receptor 1a () gene was identified as a candidate gene controlling out-of-season lambing. The...
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