1. Animal Genomics and Improvement Laboratory, BARC, USDA-ARS, Beltsville, MD 20705, USA
2. Shaanxi Key Laboratory of Agricultural Molecular Biology, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
3. Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, Huazhong Agricultural University, Wuhan, Hubei 430070, China
4. Department of Animal and Avian Sciences, University of Maryland, College Park, MD 20742, USA
5. Select Sires Inc. 11740 U.S. 42 North, Plain City, Ohio 43064, USA