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
ACTA VETERINARIA ET ZOOTECHNICA SINICA . 2016, (5): 955 -961 .  DOI: 10.11843/j.issn.0366-6964.2016.05.012