L-组氨酸对肉鸡生长性能、肌肉品质、血浆抗氧化能力和肌肉咪唑二肽含量的影响

发布时间：2018-03-09 10:57

本文选题：L-组氨酸　切入点：肉品质　出处：《动物营养学报》2017年08期 　论文类型：期刊论文

【摘要】：本试验旨在研究饲粮添加L-组氨酸对肉鸡生长性能、肌肉品质、血浆抗氧化能力和肌肉咪唑二肽含量的影响。选取体重相近、健康的1日龄爱拔益加(AA)肉仔鸡公雏300只,随机分为5组,每组6个重复,每个重复10只鸡。对照组饲喂基础饲粮,试验组饲喂在基础饲粮中分别添加250、500、1 000、2 000 mg/kg L-组氨酸的试验饲粮。试验期42 d。结果表明:1)L-组氨酸降低了肉鸡生长后期(22~42日龄)的料重比,250和2 000 mg/kg添加组显著低于对照组(P0.05)。2)L-组氨酸对肌肉全净膛率、胸肌率、腿肌率、腹脂率、滴水损失、剪切力和pH无显著影响(P0.05)。3)L-组氨酸线性提高了42日龄血浆总抗氧化能力及谷胱甘肽过氧化物酶、总超氧化物歧化酶的活性(P0.05)。4)L-组氨酸增加了42日龄肌肉中肌肽和鹅肌肽含量,500、1 000和2 000 mg/kg添加组肌肽含量分别较对照组升高了40.58%、42.75%、33.70%(P0.05),1 000 mg/kg添加组鹅肌肽含量较对照组增加了37.80%(P0.05);对肌肉中肌肽和鹅肌肽含量进行二次曲线方程拟合表明,L-组氨酸添加量为1 276 mg/kg时,肌肉咪唑二肽含量最高。可见,饲粮添加L-组氨酸可提高肉鸡的饲料转化率,改善血浆抗氧化能力,增加肌肉中咪唑二肽含量。本试验条件下,饲粮添加1 000~2 000 mg/kg L-组氨酸较佳。从增加肌肉咪唑二肽含量考虑,饲粮L-组氨酸适宜添加量为1 276 mg/kg
[Abstract]:The purpose of this study was to study the effects of dietary L-histidine supplementation on growth performance, muscle quality, plasma antioxidant capacity and muscle imidazole dipeptide content in broilers. They were randomly divided into 5 groups, 6 repeats in each group, and 10 chickens in each replica. The control group was fed with basic diet. The experiment group was fed with 2 000 mg/kg L- histidine in the basal diet. The experiment period was 42 days. The results showed that the feed weight of the experiment group was significantly lower than that of the #number0# and 2 000 mg/kg groups. The results showed that the feed weight of the experiment group was significantly lower than that of the #number0# and 2 000 mg/kg groups. The results showed that the feed weight of the experiment group was significantly lower than that of the #number0# and 2 000 mg/kg groups. In the control group, the total musculosis-removal rate of P0.05G. 2L- histidine was measured. Breast muscle rate, leg muscle rate, abdominal fat rate, drip loss, shear stress and pH had no significant effects on plasma total antioxidant capacity and glutathione peroxidase (Glutathione peroxidase) at 42 days of age. The activity of total superoxide dismutase (TSOD), P0.05U. 4nL- histidine, increased the contents of carnosine and geese carnosine in 42-day-old muscle. Compared with the control group, the carnosine contents in the carnosine and geese carnosine contents in the addition group were 40.58% and 42.75%, respectively. The contents of carnosine in the addition group were higher than those in the control group, respectively, and the contents of carnosine in the addition group were higher than those in the control group. The contents of carnosine and geese carnosine in muscle were fitted by quadratic equation. The results showed that when the addition of L-histidine was 1 276 mg/kg, The content of imidazole dipeptide in muscle was the highest. It can be seen that diet supplemented with L-histidine can improve the feed conversion rate, improve plasma antioxidant ability, and increase the content of imidazole dipeptide in muscle. It is better to add 1 000 mg/kg L- histidine to diet. Considering the increase of muscle imidazole dipeptide content, the optimum dietary L- histidine content is 1 276 mg/kg.
【作者单位】：中国农业科学院饲料研究所农业部饲料生物技术重点开放试验室生物饲料开发国家工程研究中心;
【基金】：基金项目:家禽产业技术体系北京市创新团队(CARS-PSTP)
【分类号】：S831.5

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