1. Guangdong Laboratory of Lingnan Modern Agriculture and Guangdong Province Key Laboratory of Animal Nutritional Regulation, National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, 483 Wushan Road, Tianhe District, Guangzhou, Guangdong 510642, China.
2. Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China.
3. Department of Endocrinology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China.
4. Division of Endocrinology, Department of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA.
5. Department of Physiology and Biophysics, The University of Illinois at Chicago, Chicago, IL 60612, USA.