Effect of Different Milking Frequency on Milking Performance of Dairy Cows

CHEN Yu,JIN Xiang-yang,ZHANG Zhen,ZHU He-shui(Henan Agricultural University,Zhengzhou 450002,China)

Animal Husbandry and Feed Science . 2019, (2): 68 -71 . DOI: 10.12160/j.issn.1672-5190.2019.02.018