[Liu, Jing-xi; Hou, Zhen-Ping; Wang, Wen-Jie] Tianjin Agr Acad, Tianjin Inst Anim Husb & Vet Sci, Tianjin 300112, Peoples R China.
[Liu, Gang; Liu, Zhi-qiang] Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China.
[Liu, Gang; Liu, Zhi-qiang] Chinese Acad Sci, Hunan Engn & Res Ctr Anim Sci, Res Ctr Healthy Breeding Livestock & Poultry, Changsha 410125, Hunan, Peoples R China.
[Souffrant, Wolfgang B.; Urubschurov, Vladimir] Leibniz Res Inst Biol Farm Anim, Res Unit Nutr Physiol, Prot Metab & Gastrointestinal Microbiol Grp, D-18196 Dummerstorf, Germany.
[Fan, Jun] Hunan Agr Univ, Coll Biosci & Biotechnol, Changsha 410125, Hunan, Peoples R China.