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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39 For more details click here
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(7): 3921-3934
DOI: https://doi.org/10.20546/ijcmas.2018.707.456


Methionine, Lysine and Choline in Dairy Cows: a Review Article
Khwairakpam Ratika1, R.K. James Singh2 and S.S. Dahiya3
1Division of Animal Nutrition, ICAR- National Dairy Research Institute, Karnal-132001, India
2Division of Veterinary Biotechnology, ICAR- Indian Veterinary Research Institute, Izatnagar, Bareilly-243122, India
3Division of Animal Nutrition and Feed Technology, ICAR-Central Institute of Research on Buffaloes, Hisar-125001, India
*Corresponding author
Abstract:

Provision of nutrients in balanced form and required amount is crucial to meet the productive targets in dairy cows. Among the various nutrients, protein is the most important nutrient for milk production. Methionine and lysine are considered as the first and second limiting amino acids for milk protein synthesis because of their low concentrations in feed protein as compared to their concentrations in milk and ruminally synthesized bacterial protein. Choline, a component of phospholipid and methyl donor, plays an essential role in biosynthesis and secretion of milk. In addition, choline is a component of the neurotransmitter acetylcholine and is used to synthesize the ubiquitous phospholipid, phosphatidylcholine, via the cytidinediphosphate choline pathway. As dietary methionine, lysine and choline are degraded extensively in the rumen, additional methionine, lysine and choline are supplemented in rumen protected form. About 28% of absorbed methionine is used for choline synthesis. Supply of methionine and choline enhance the capacity of liver to export triacylglycerol (TAG) in the form of VLDL and help ameliorate the negative effects of fatty acid accumulation in the liver soon after parturition.


Keywords: Methionine, Lysine, Choline, Dairy cows
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How to cite this article:

Khwairakpam Ratika, R.K. James Singh and Dahiya, S.S. 2018. Methionine, Lysine and Choline in Dairy Cows: a Review Article.Int.J.Curr.Microbiol.App.Sci. 7(7): 3921-3934. doi: https://doi.org/10.20546/ijcmas.2018.707.456