Effect of Seasonal Changes on Milk Yield for Lactation Cow in Shanghai District
WANG Jian-ping;;WANG Jia-qi;BU Deng-pan;HUO Xiao-kai;GUO Tong-jun;LIANG Jian-guang;WANG Guang-wen;YUAN Yao-ming;LI Fa-di
. 2008, (8): 70 -73 .