[Chen, Qinghua; Yan, Zhaoming] Hunan Agr Univ, Coll Anim Sci & Technol, Changsha 410128, Peoples R China.
[Duan, Yehui; Li, Fengna; Yan, Zhaoming] Chinese Acad Sci, Hunan Prov Engn Res Ctr Hlth Livestock & Poultry, Lab Anim Nutr Physiol & Metab Proc,Minist Agr,Sci, Key Lab Agroecol Proc Subtrop Reg,Inst Subtrop Ag, Changsha 410125, Peoples R China.
[Zhong, Yinzhao] South China Agr Univ, Coll Anim Sci, Guangzhou 510642, Peoples R China.
[Li, Fengna] Hunan Collaborat Innovat Ctr Utilizat Bot Funct I, Hunan Coinnovat Ctr Anim Prod Safety, Changsha 410128, Peoples R China.