Seasonal Variation of Ambient Temperature，Relative Humidity，Dust and Airborne Bacteria in Dairy Cowshed and Their Correlation in Chill Region
GAO Yu-hong，GUO Jian-jun，LI Hong-shuang，QIU Dian-rui，LI Xiao-bin，WU Guang-jun，LI Jian-guo
ACTA VETERINARIA ET ZOOTECHNICA SINICA . 2016, (3): 620 -629 .  DOI: 10.11843/j.issn.0366-6964.2016.03.028