Betaine, as a feed additive, has the function of providing methyl donor and can save some methionine. It has the function of regulating the osmotic pressure, relieving stress, promoting fat metabolism and protein synthesis, improving the rate of lean meat, and can enhance the efficacy of anti-coccidiosis. Used as an attractant in aquatic animal feed.

In poultry feed, because its the first restrictive amino acid methionine, therefore, at present a large number of application of betaine in poultry feed can not only reduce the chicken carcass fat, improve the effect of using a anti-coccidiosis promote growth or eggs, etc., mainly betaine can also provide methyl can save a part of methionine, and can decrease the DL - methionine in order to reduce costs.

Dietary betaine can significantly increase the growth rate and feed conversion rate of broilers by 7.20% and 6.81%, increase the MYocyte RNA content by 15.21% and decrease the serum uric acid concentration by 10.96%, respectively

Betaine supplementation can improve the growth of broilers, improve feed utilization rate, significantly increase the breast muscle percentage of broilers, increase the creatine and creatinine contents in bone and meat, and improve the meat quality of broilers

Betaine can significantly improve laying rate, egg weight, haff unit and yolk relative weight, and significantly reduce belly fat deposition and liver fat content of laying hens

The efficiency of betaine was 2.35 times that of methionine under the condition of the same basal ingredients. Reasonable substitution of DL-methionine is safe and feasible, without any effect on production performance, and can reduce the cost and increase the economic benefit.

Betaine had a certain inhibitory effect on the early invasion and development of Gimeria. Combined with salomycin, betaine could prevent the development of E.tenella and E. cervulina, and reduce the damage and mortality of host intestinal epithelial cells.