1. International Joint Agriculture Research Center for Animal Bio-Breeding, Ministry of Agriculture and Rural Affairs/Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
2. Department of Animal and Poultry Production, Faculty of Environmental Agricultural Sciences, Arish University, El-Arish 45511, Egypt
3. College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China
4. Key Laboratory of Livestock Biology, Northwest A&F University, Yangling 712100, China