北京地区奶牛反刍与活动量影响因素分析
鄢新义，董刚辉，徐伟，刘澳星，Jose Galindez，王炎，郭刚，李锡智，王雅春
Analysis of Influence Factors on Cow’s Rumination and Activity in Beijing
YAN Xin-yi，DONG Gang-hui，XU Wei，LIU Ao-xing，Jose Galindez，WANG Yan，GUO Gang，LI Xi-zhi，WANG Ya-chun
畜牧兽医学报
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2016, (5): 955
-961
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DOI: 10.11843/j.issn.0366-6964.2016.05.012
