China Animal Husbandry and Veterinary Medicine ›› 2021, Vol. 48 ›› Issue (7): 2439-2447.doi: 10.16431/j.cnki.1671-7236.2021.07.019

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

Research Progress on Metabolic Pathway of Lactic Acid and Its Effect on the Health of Dairy Cows

YU Shiqiang1, TONG Jinjin1, XIONG Benhai2, JIANG Linshu1   

  1. 1. Key Laboratory for Dairy Cow Nutrition, College of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China;
    2. Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
  • Received:2020-10-19 Online:2021-07-20 Published:2021-07-15

Abstract: Lactic acid is an important intermediate metabolite in the rumen of dairy cows.Reasonable regulation of lactic acid metabolic characteristics,full utilization and playing the beneficial functions of lactic acid are of great significance for the healthy production of dairy cows.The synthetic pathway of lactic acid,the main acid-producing bacteria,the metabolic pathway of lactic acid,the main utilizing bacteria,the metabolic mode of lactic acid in the rumen of dairy cattle and the factors affecting its metabolism were reviewed in this paper.The effects of lactic acid-producing bacteria and utilizing bacteria on the regulation of lactic acid metabolism were elaborated in detail.At the same time,the effects of plant extracts on the regulation of lactic acid metabolism and the effects of lactic acid metabolism regulation on the gastrointestinal flora,lactation performance and mastitis of dairy cattle were introduced.It provided a theoretical basis for further understanding the action mechanism of lactic acid on the health of dairy cows and the application of related plant active substances in production practice,and provided new ideas for solving the prevention and treatment of acidosis in dairy cows caused by high-precision diet.

Key words: lactic acid; lactic acid producing bacteria; lactic acid utilizing bacteria; plant extracts; dairy cows

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