不同水平精氨酸生素对断奶仔猪生长性能和腹泻的影响

rginine is considered to be a nutritionally essential amino acid for piglets, particularly under stress conditions. N-acetylglutamate (NAG) plays an important role in regulating intestinal synthesis of arginine in pigs. But a low level of mitochondrial NAG may limit in vivo intestinal arginine synthesis. N-Carbamylglutamate (NCG), an analogue of NAG, was on investigated on the effects of the growth performance and diarrhea of early-weaned piglet. Piglets from 12 fences weaned at 21 d with initial average swinery weight about 5.00±0.23 kg were chosen. The piglets were grouped into 3 treatments in a completely randomized block design and fed diets with three levels of NCG (0, 0.08 and 0.16%). The experimental period is 12 d. Compared with the piglets in control and 0.16%NCG group, supplementation of 0.08％NCG improved ADG and ADFI, and reduced F/G, diarrhea rate diarrhea index of the weaned piglets significantly (P<0.05). But when supplemented with higher level of NCG, the ADG of the piglets were lower, F/G, diarrhea rate diarrhea index were higher than that in 0.08％NCG group significantly (P>0.05). There were no significant differences in all the indexes between 0.16％NCG group and control group. The results showed that dietary supplementation of 0.08% NAG may help overcome weaning stress of piglets, while higher level of NCG (0.16％) may have side effect.