Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural Affairs/Laboratory of Ruminant Nutrition;
Feed Research Institute;
Chinese Academy of Agricultural Sciences;
Beijing 100081;
P.R.China;
College of Animal Science and Food Engineering;
Jinling Institute of Technology;
Nanjing 211100;
P.R.China;
Inner Mongolia Academy of Agriculture&Animal Husbandry Sciences;
Hohhot 010030;
P.R.China;