1. Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, People’s Republic of China
2. Gene-marker Laboratory, Faculty of Agricultural and Life Sciences, Lincoln University, Lincoln, New Zealand
3. International Science and Technology Cooperation Base of Meat Sheep and Meat Cattle Genetic Improvement in Northwest of China, Gansu Agricultural University, Lanzhou, People’s Republic of China