Animal Husbandry and Feed Science ›› 2010, Vol. 31 ›› Issue (5): 191-191.doi: 10.12160/j.issn.1672-5190.2010.05.107
FANG Su-li,LUO Yu-zhu(1.Faculty of Animal Science and Technology,Gansu Agricultural University,Lanzhou 730070,China;2.Gansu Key Laboratory of Herbivorous Animal Biotechnology,Lanzhou 730070,China)