N-氨甲酰谷氨酸对三黄鸡养分代谢率、屠宰性能和血清免疫球蛋白含量的影响

本试验旨在研究饲粮中添加N-氨甲酰谷氨酸对三黄鸡养分代谢率、屠宰性能和血清免疫球蛋白含量的影响。选取21日龄体重相近的三黄鸡180只,随机分为4组,每组3个重复,每个重复15只鸡。对照组饲喂基础饲粮,试验1,2,3组分别饲喂N-氨甲酰谷氨酸添加量为0.4%、0.5%、0.6%的试验饲粮。试验期28 d。试验结果表明:(1)N-氨甲酰谷氨酸可以提高粗蛋白质、钙、磷代谢率,其中,添加0.4%、0.5%N-氨甲酰谷氨酸组粗蛋白质代谢率比对照组分别提高6.95%、7.04%(P<0.05);添加0.4%、0.5%N-氨甲酰谷氨酸组磷代谢率比对照组分别提高5.38%、2.80%(P<0.05)。(2)添加0.4%N-氨甲酰谷氨酸可以显著提高全净膛重、胸肌率、腿肌率、肝脏和肾脏重量(P<0.05)。添加0.4%、0.5%组屠宰重比对照组分别提高9.57%、8.82%(P<0.05)。添加0.4%N-氨甲酰谷氨酸组胸肌率、腿肌率、肝脏重量比对照组分别提高13.46%、6.08%、9.81%(P<0.05)。(3)添加0.4%、0.6%N-氨甲酰谷氨酸组免疫球蛋白A含量比对照组分别提高17.65%、5.88%(P>0.05)。添加0.4%、0.5%N-氨甲酰谷氨酸组免疫球蛋白G含量分别比对照组提高33.96%、28.30%(P<0.05)。添加0.4%、0.6%N-氨甲酰谷氨酸组免疫球蛋白M含量比对照组分别提高25%、12.5%(P>0.05)。综合上述各项指标可知,N-氨甲酰谷氨酸添加的比例在0.4%时能很好的改善三黄鸡养分代谢率和屠宰性能,增加血清中免疫球蛋白的含量。

This experiment was carried out to investigate the effects of dietary N-carbamylglutamate（NCG）on nutri-ent metabolic rate,slaughter performance and serum immunoglobulin content of three yellow chicken.A total of 180 21- days-old three yellow chicken with similar weight were randomly assigned into 4 groups with 3 replications of 15 each.The control group was fed with basal diet,groups 1 to 3 were fed with basal diets supplemented with 0.4%, 0.5%, 0.6% NCG, respectively.The trial lasted for 28 days.The results showed that： （1）The supplementation of NCG increased crude protein, Ca,P metabolic rate.Compared with the control group,the crude protein metabolic rate were increased by 6.95%, 7.04%, respectively in the supplementation of 0.4%, 0.5% NCG groups （P 〈 0.05）.P metabolic rate were increased by 5.38%, 2.80% respectively in 0.4%, 0.5% NCG groups（P 〈 0.05）.（2）The eviscerated weight, breast muscle rate, leg muscle rate, liver and kidney weight were significantly increased in 0.4% NCG group （P 〈 0.05）.The slaughter weight were increased by 9.57%, 8.82%,respectively in 0.4%, 0.5% NCG groups （P 〈 0.05）.The breast musde rate, leg muscle rate and liver weight were increased by 13.46%, 6.08%, 9.81%, respectively in 0.4% NCG group （P 〈 0.05）.（3）The immune globulin A content was increased by 17.65%, 5.88%, respectively in 0.4% and 0.6% NCG groups（P 〉 0.05）.The immune globulin G content was increased by 33.96%, 28.30%, respectively in 0.4% and 0.5% NCG groups （P 〈 0.05）.The immune globulin M content was increased by 25%, 12.5%, respectively 0.4%, 0.6% NCG groups.A combination of all index, it could pro-mote the nutrient metabolic rate,slaughter performance and serum immunoglobulin content of three yellow chicken and in-crease the contents of serum part amino acid by supplementation of 0.4% NCG.