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United States Department of Agriculture

Agricultural Research Service

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Research Project: Candidate Genes for Improving Reproductive Efficiency of Sheep

Location: Range Sheep Production Efficiency Research

2013 Annual Report


1a.Objectives (from AD-416):
Genotype rams to indentify genetic markers that may be used to improve reproductive efficiency of sheep.


1b.Approach (from AD-416):
Commercially available 50,000 single-nucleotide polymorphism (50K SNP) chips will be used to screen rams for genetic markers that are associated with traits relevant to the reproductive efficiency of sheep. The 50K SNP-chip data and pedigree data will be used to determine the efficacy of using marker-assisted selection approaches for improving reproductive efficiency of sheep.


3.Progress Report:

The original principle investigators on this project are no longer with the location. As such, the agreement will terminate at the end of FY2013. Over the life of the agreement, U. S. Sheep Experiment Station scientists provided Washington State University (WSU) scientists with whole-blood samples from rams and pedigrees for those rams. WSU scientists used single-nucleotide polymorphism (SNP) chips to screen rams for genetic markers that are associated with traits relevant to the reproductive efficiency of sheep. Based on the outcome of agreement, collaborators estimated the efficacy of using marker-assisted selection approaches for improving reproductive efficiency of sheep. This collaboration supported Objective 2 of the parent project, which is focused on improving maternal and paternal genetic lines of sheep to best match western rangeland environments.


Last Modified: 9/21/2014
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