Arginine from endogenous synthesis as well as the traditional diet provision can not satisfy the optimal requirement of sows.Extra dietary supplementation of arginine is of great significance in improving the growth and development of placenta,embryo and fetus in sows.The present article reviewed the nutritional and physiological effects of arginine,including the physical and biochemical characters,anabolism and catabolism,and its effects on the reproductive performance of pregnancy sows,and especially focu...