The endocrine mechanism of betaine to promote laying hens is relatively complicated. According to current research, it may be achieved through two ways: On the one hand, betaine promotes the synthesis of methylated products, phospholipids and carnitine, by providing active methyl groups. Enhance the fat carrying and oxidative energy supply of laying hens, and provide sufficient basic materials (yolk fat deposition) and energy requirements for improving the total egg quality per unit time.

On the other hand, betaine increases the content of hypothalamic adenosine-3',5'-cyclized-phosphate (cAMP) through its methylation effect, enhances its ability to secrete gonadotropin-releasing hormone (GnRH), and strengthens the glands. The secretion of pituitary follicle stimulating hormone (FSH) and luteinizing hormone (LH) promotes the growth and development of follicles and ovulation, effectively inhibits the occurrence of follicular atresia, increases the number of effective oocytes, increases the egg production rate, and promotes egg protein and Egg fat deposits, thereby improving the laying rate and feed utilization rate of laying hens.