共 7 条
[6]
日粮精粗比对奶牛消化代谢及乳脂肪酸成分影响的研究[D]. 王吉峰.中国农业科学院. 2004
[7]
The estimation of protein degradability in the rumen from incubation measurements weighted according to rate of passage[J] . E. R. ?rskov,I. McDonald.The Journal of Agricultural Science . 1979 (2)