Influences of Total Mixed Diets with Different Concentrate-Roughage Ratio on pH and Activity of Digestive Enzymes in Alimentary Canal of Fattening Lambs at Tibetan Plateau

Jian-Bin Liu, Fa-Di Li, Fan Wang, Xia Lang, Jian Guo, Xiao-Ping Sun, Yao-Jing Yue, Rui-Lin Feng and Bo-Hui Yang

Journal of Animal and Veterinary Advances 11 ( 12 ): 2129 - 2137 , 2012