China Dairy ›› 2021, Vol. 0 ›› Issue (9): 74-78.doi: 10.12377/1671-4393.21.09.12

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The Correlation of Rumen Fermentation Performance and Milk Yield of Dairy Cows

PANG Shilong1, SI Haifeng2, HOU Jie2, ZHANG Wenye2, PANG Guoliang5,*   

  1. 1College of Animal Science and Technology,Northwest A & F University, Yangling Shaanxi 712100;;
    2Wugong Animal Health Supervision Institute,Xianyang Shaanxi 712200;
    3Jinzhong Comprehensive Inspection and Testing Center,Jinzhong Shanxi 0306065;
    4Shaanxi Shiyang Agricultural Technology Co.,Ltd.,Xi'an Shaanxi 710016;
    5Shaanxi Animal Husbandry Technology Promotion Station,Xi'an Shaanxi 710016
  • Online:2021-09-25 Published:2021-09-29

Abstract: The purpose of this experiment was to reveal the influence of rumen fermentation performance on milk yield by analyzing the correlation of milk yield and rumen fermentation indexes. Milk yield and rumen fluid of 189 Holstein lactating dairy cows were recorded,the contents of NH3-N and volatile fatty acids were determined respectively. The results showed that there was no correlative between NH3-N and milk yield (P>0.05),the percentage of propionate was positively correlated with milk yield (P<0.01),and the percentage of acetate and isobutyrate was negatively correlated with milk yield (P<0.05). In conclusion,rumen fermentation performance of dairy cows is closely related to milk yield.

Key words: rumen fermentation, milk yield, correlation analysis

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