Nutritional strategies to decrease the conversion of NEFA into triglycerides that accumulate in the liver of dairy cows
In addition to the nutritional strategies used to decrease the supply of circulating NEFAs available for extraction by the liver, there is the possibility of slowing the rate at which NEFAs are converted into triglycerides in the liver through nutritional additives.
Choline
It is a quasi-vitamin that has a variety of functions in mammalian metabolism. Its most important functions are as:
component of phospholipids located in the membranes of all cells of the body (phosphatidylcholine)
component of the neurotransmitter acetylcholine
as a direct precursor of betaine
The potential application of choline inclusion in transition cows’ nutrition has mainly focused on its role in lipid metabolism. Due to the fact that phosphatidylcholine is necessary for the synthesis and release of VLDL by the liver.
Choline formula
Milk and fat-corrected milk yields have generally increased in response to feeding protected choline in the rumen during the transition period. Suggesting that metabolic changes in hepatic fatty acid metabolism translated into an improved performance during early lactation.
Methionine and Lysine
The two most limiting AAs for milk and milk protein synthesis are often considered (NRC, 2001).
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Continue reading: “Nutritional management of the dairy cow in transition (spanish content)”