Nutritional effects of L-Arginine:

1. To improve intrauterine growth retardation in sows, studies have shown that adding 1% L-Arginine to the diet of sows from the beginning of 30 days of pregnancy to the first delivery of 21 days after farrowing can increase the expression of immune-related genes in sows' leukocytes, thereby improving the immunity of first-delivery sows.

2. After L-Arginine is added to the diet, the concentration of L-Arginine in the plasma of the sow can be increased, thereby enhancing the sow's own immunity and anti-stress ability, ensuring the stability of the placental environment, increasing the implantation of embryos and reducing embryo death.