青海海东鸡母体日粮精氨酸水平对子代雏鸡肠道形态和血清生化指标影响

Effects of Maternal Dietary Arginine Level on Intestinal Morphology and Serum Biochemical Indices of Qinghai Haidong Chicken

为研究不同水平精氨酸对海东鸡生产性能以及对子代雏鸡肠道形态学、血清生化指标影响,试验选取165只海东鸡种鸡(公母比例1∶10)随机分为5组,分别添加0.10%、0.30%、0.50%、0.70%和0.90%精氨酸替代麸皮,使各组精氨酸计算水平分别为0.96%、1.16%、1.36%、1.56%和1.76%,且互为对照组。试验结果表明:日粮中添加0.30%精氨酸可以显著提高母鸡产蛋率,也可降低料蛋比和7日龄雏鸡体重,但不同梯度的精氨酸对7日龄雏鸡十二指肠重量、空肠重量、空肠长度、回肠重量、回肠长度无显著性影响(P>0.05),其中0.70%组十二指肠长度较长;母鸡日粮添加0.50%精氨酸对子代十二指肠绒毛、十二指肠隐窝深度、空肠绒毛长度、空肠隐窝深度、回肠绒毛长度和回肠隐窝深度有显著影响(P<0.05);并且日粮中添加0.30%精氨酸能显著降低7日龄雏鸡血清TG的含量(P<0.05),显著增加血清LDL、HDL、GLU、GH、GC含量(P<0.05),种鸡日粮中添加0.70%精氨酸能显著增加7日龄雏鸡血清TC的含量(P<0.05)。日粮中添加0.30%和0.50%精氨酸对成年海东母鸡生产性能以及子代雏鸡肠道形态、血清生化指标改善最佳。

In order to study the effects of different levels of arginine in maternal diet on the growth performance of Haidong chickens,and the intestinal morphology and serum biochemical indexes of offspring chicks,One hundred and sixty-five Haidong breeders(male to female ratio:1:10)were randomly divided into 5 groups.Arginine was substituted for bran with 0.10%,0.30%,0.50%,0.70%and 0.90%,respectively.The calculated level of Arginine in each group was 0.96%,1.16%,1.36%,1.56%and 1.76%,respectively,and each group was the control group.The results showed that 0.30%arginine in the diet could significantly increase the laying rate and body weight of broilers at 7 days of age,and also reduce the feed to egg ratio,but there was no significant difference in duodenal weight,jejunal weight,jejunal length,ileum weight and ileum length of 7-day-old chicks with different gradient of arginine(P>0.05).However,the length of the duodenal in 0.70%group was significantly longer than the other groups.The supplementation of 0.50%arginine had significant effects on duodenal villus,duodenal crytal depth,jejunal villus length,jejunal crytal depth,ileum villus length and ileum crytal depth of offspring of breeder chickens(P<0.05).The serum TG content of 7 day-old chicks was decreased and the serum LDL,HDL,GLU,GH and GC content of 7 day-old chicks significantly increased by added 0.30%arginine in the diets of breeders(P<0.05).Moreover,the serum TC content significantly increased in 7 dayold chicks which from the breeders feeding with adding 0.70%arginine diets.Conclusion:Adding 0.30%and 0.50%arginine in the diet of breeder chickens can improve the growth performance of adult Haidong chickens and the intestinal morphology and serum biochemical indexes of offspring chickens.