1. College of Animal Science and Technology, Northwest A&F University, 712100 Yangling, Shaanxi, P.R. China.
2. Animal Science, School of Agriculture and Environment, Massey University, Palmerston North, New Zealand.
3. Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran.
4. Animal Husbandry and Animal Wealth Development Department, Faculty of Veterinary Medicine, Damanhour University, Damanhour, Egypt.
5. Department of Biological Science, Karakoram International University, Ghizer Campus, Gilgit, Baltistan 15200, Pakistan.
6. University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zatisi 728/II, 389 25 Vodnany, Czech Republic.
7. National Beef Cattle Improvement Center, Northwest A&F University, 712100 Yangling, Shaanxi, P.R. China.