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L-肌肽对蛋鸡产蛋性能、蛋品质、养分表观消化率和血清生化指标的影响

  • 初晖 ,
  • 张峰瑞 ,
  • 于庆港 ,
  • 蔡锋隆 ,
  • 秦顺义 ,
  • 李留安 ,
  • 杨华 ,
  • 张建斌
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  • 1. 天津农学院动物科学与动物医学学院, 天津市农业动物繁育与健康养殖重点实验室, 天津 300384;
    2. 天津市广源畜禽养殖有限公司, 天津 301824
初晖(1999-),女,辽宁大连人,本科生,动物药学专业。E-mail:1843461894@qq.com

收稿日期: 2021-03-07

  网络出版日期: 2021-10-16

基金资助

天津市级大学生创新创业训练计划项目(201910061053);天津市"131"创新型人才团队建设项目(20160318);天津市科技重大专项与工程项目(20ZYCGSN00300,18ZXBFNC00310);天津市自然科学基金重点项目(20JCZDJC00170)

Effects of L-Carnosine on Laying Performance, Egg Quality, Nutrient Apparent Digestibility and Serum Biochemical Indices of Laying Hens

  • CHU Hui ,
  • ZHANG Fengrui ,
  • YU Qinggang ,
  • CAI Fenglong ,
  • QIN Shunyi ,
  • LI Liuan ,
  • YANG Hua ,
  • ZHANG Jianbin
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  • 1. Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300384, China;
    2. Tianjin Guangyuan Livestock and Poultry Breeding Co., Ltd., Tianjin 301824, China

Received date: 2021-03-07

  Online published: 2021-10-16

Supported by

 

摘要

本试验旨在研究L-肌肽对蛋鸡性能、蛋品质、养分表观消化率和血清生化指标的影响。试验选用240只19周龄健康海兰褐蛋鸡,随机分为4个组,每组6个重复,每个重复10只蛋鸡。对照组饲喂基础饲粮,试验组分别饲喂在基础饲粮中添加300、600和900 mg/kg L-肌肽的饲粮。试验预试期7 d,正试期42 d。结果表明:1)与对照组相比,饲粮添加900 mg/kg L-肌肽显著降低了蛋鸡料蛋比(P<0.05);2)与对照组相比,饲粮添加900 mg/kg L-肌肽显著提高了鸡蛋蛋形指数、蛋黄颜色和蛋壳强度(P<0.05);3)饲粮添加L-肌肽对蛋鸡粗蛋白质、粗灰分、钙、磷和粗纤维的表观消化率均无显著影响(P>0.05);4)与对照组相比,饲粮添加300和600 mg/kg L-肌肽可以显著提高蛋鸡血清免疫球蛋白A和免疫球蛋白G含量(P<0.05);5)与对照组相比,试验组蛋鸡血清总抗氧化能力以及超氧化物歧化酶和谷胱甘肽过氧化物酶活性显著提高(P<0.05),900 mg/kg L-肌肽添加组蛋鸡血清丙二醛含量显著降低(P<0.05)。综上所述,饲粮添加L-肌肽可以降低蛋鸡料蛋比,提高鸡蛋蛋形指数、蛋黄颜色和蛋壳强度,提高血清免疫球蛋白含量和抗氧化能力,且以900 mg/kg添加水平效果较佳。

本文引用格式

初晖 , 张峰瑞 , 于庆港 , 蔡锋隆 , 秦顺义 , 李留安 , 杨华 , 张建斌 . L-肌肽对蛋鸡产蛋性能、蛋品质、养分表观消化率和血清生化指标的影响[J]. 动物营养学报, 2021 , 33(10) : 5938 -5946 . DOI: 10.3969/j.issn.1006-267x.2021.10.052

Abstract

The purpose of the paper was to study the effects of L-carnosine on laying performance, egg quality, nutrient apparent digestibility and serum biochemical indices of laying hens. A total of 240 healthy 19-week-old Hy-Line brown laying hens were selected and randomly divided into 4 groups with 6 repetitions for each group and 10 chickens for each repetition. The hens in the control group were fed a basal diet, and those in the experimental groups were fed the basal diet supplemented with 300, 600 and 900 mg/kg L-carnosine, respectively. The preparatory experiment period was 7 days, and the experiment period was 42 days. The results showed as follows:1) compared with the control group, dietary 900 mg/kg L-carnosine significantly decreased the feed to egg ratio of laying hens (P<0.05). 2) Compared with the control group, dietary 900 mg/kg L-carnosine significantly increased the egg shape index, yolk color and eggshell strength of eggs (P<0.05). 3) Dietary L-carnosine had no significant effects on apparent digestibility of crude protein, ash, calcium, phosphorus and crude fiber of laying hens (P>0.05). 4) Compared with the control group, dietary 300 and 600 mg/kg L-carnosine significantly increased the contents of immunoglobulin A and immunoglobulin G in serum of laying hens (P<0.05). 5) Compared with the control group, the total antioxidant capacity, activity of superoxide dismutase and glutathione peroxidase in serum of laying hens in the experimental groups were significantly increased (P<0.05), and the serum malondialdehyde content in 900 mg/kg L-carnosine supplemental group was significantly decreased (P<0.05). In conclusion, dietary L-carnosine can reduce the feed to egg ratio, increase egg shape index, yolk color and eggshell strength, increase serum immunoglobulin content and antioxidant capacity of laying hens, and the supplemental level of 900 mg/kg has a better effect.

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