Betaine, also called trimethylglycine, is a non-toxic and harmless compound. It is a white crystalline powder, with a molecular formula of C5H12NO2, a molecular weight of 118, and a melting point of 293°C. Its taste is sweet and it is a substance similar to vitamins. Adding betaine to poultry feed has the effect of resisting coccidiosis and protecting vitamins.

Vitamins have poor stability and are easily affected by light, heat, and humidity, and will gradually be lost over time. Most vitamins are more or less reduced in potency. Betaine is an amphoteric compound that is neutral in aqueous solution and has strong antioxidant properties. It prevents the oxidation of fat-soluble vitamins A, D, E, and K, protects their potency, and protects vitamins during feed processing and storage. Have a protective effect.

Coccidiosis is an important disease in the chicken industry. In recent years, it has been found that the effects of such anticoccidial drugs have become less and less effective, and the coccidiosis has shown increasing resistance. Betaine can increase the weight gain of polyethers and other antibiotics. The combination of betaine and polyether antibiotics can reduce the toxic reaction of polyether antibiotics, especially for the disadvantages caused by the combined application of polyether antibiotics and other antibacterial drugs. The reaction has a weakening or eliminating effect.