Research Progress on Main Influencing Factors of Urea Nitrogen in Milk of Dairy Cows
YANG Hai-yu,LU Wuan,XUE Jie,ZHANG Le-ying,ZHANG Ru-mei,LI Rong-ling,LI Jian-bin,ZHONG Ji-feng(Dairy Research Center,Shandong Academy of Agricultural Sciences,Ji′nan 250131,China,Hebei University of Engineering,Handan 056001,China)
Animal Husbandry and Feed Science
.
2019, (4): 79
-83
.
DOI: 10.12160/j.issn.1672-5190.2019.04.021
