Betaine is a high component in beet root. At present, the key   methods are alcohol extraction, water extraction and chemical  synthesis.  It has physiological functions such as regulating osmotic pressure, resisting stress, inducing food, redistributing body fat, resisting stress, turning methyl and stabilizing vitamins.  

Application of betaine in piglets: for piglets after weaning, adding betaine can improve growth performance, and 600Mg/kg betaine has the best actual effect; 800Mg/kg betaine can improve the digestibility and absorption of dry matter and crude protein, enhance  the activity of proteolytic enzyme, and improve lean meat rate  and reduce diarrhea of piglets.  

Application of betaine in growing-finishing pigs: adding betaine can increase daily gain and decrease feed/gain of growing-finishing pigs;  According to the improvement of crude fat and longissimus dorsi muscle composition, the key to improve pork quality is to increase redness, reduce yellow, damage of cooking, shear stress and improve marbling score.  

Application of betaine in finishing pigs: adding betaine can improve lean meat percentage and muscle fat percentage, reduce body fat percentage and backfat thickness, and improve body mass of finishing pigs.  This is due to the fact that betaine improves intramuscular fatty acid levels, probably due to the fact that betaine promotes fatty acid intake more effectively than it promotes fatty acid oxidation.  

Application of betaine in breeding pigs: It was found that betaine could increase the number of piglets after weaning at 21 days of age and litter weight after weaning, reduce the interval of estrus within 7 days after weaning, and improve breeding performance.  Can also promote sow ovulation period and spermatocyte perfection;  Betaine, as a methyl donor, can reduce the level of homocysteamine in serum protein of sows by promoting protein synthesis, thus promoting the growth and development of test-tube embryos and improving the reproductive performance of sows.