动物营养学报 >

2015 , Vol. 27 >Issue 8: 2388 - 2395

DOI: https://doi.org/10.3969/j.issn.1006-267x.2015.08.010

禽营养 Poultry Nutrition

饲粮色氨酸水平对新杨绿壳蛋鸡生产性能、蛋品质及血清生化指标的影响

  • 贺强 ,
  • 丁阳 ,
  • 袁超 ,
  • 李俊明 ,
  • 严华祥 ,
  • 邹晓庭
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  • 1. 浙江大学饲料科学研究所, 农业部华东动物营养与饲料科学重点实验室, 杭州 310058;
    2. 上海市农业科学院, 上海 201106

收稿日期: 2015-03-16

  网络出版日期: 2015-08-13

基金资助

国家蛋鸡产业技术体系建设专项基金(CARS-41-K17);国家科技支撑计划专项基金(No.2014BAD13B04)

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Effects of Dietary Supplementation of L-Tryptophan on Performance, Egg Quality and Serum Biochemical Parameters of Xinyang Green Shell Laying Hens

  • HE Qiang ,
  • DING Yang ,
  • YUAN Chao ,
  • LI Junming ,
  • YAN Huaxiang ,
  • ZOU Xiaoting
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  • 1. Key laboratory of Animal Nutrition and Feed Science of Agriculture in East China, Feed Science Institute, Zhejiang University, Hangzhou 310058, China;
    2. Shanghai Poultry Breeding Co., Ltd., Shanghai Academy of Agriculture Sciences, Shanghai 201106, China

Received date: 2015-03-16

  Online published: 2015-08-13

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摘要

本试验旨在通过研究色氨酸对新杨绿壳蛋鸡的生产性能、蛋品质以及血清生化指标的影响,测定新杨绿壳蛋鸡(29~40周龄)的色氨酸需要量。试验选取健康、体重均匀、产蛋率相近的28周龄的新杨绿壳蛋鸡525羽,随机分为5组,每组5个重复,每个重复21羽。对照组饲喂色氨酸含量为0.15%的基础饲粮,试验组在基础饲粮的基础上分别添加200、400、600、800 mg/kg的色氨酸,使得各试验组的色氨酸水平分别达到0.17%、0.19%、0.21%、0.23%。预试期1周,正试期12周。结果表明:1)饲粮中添加色氨酸可显著提高新杨绿壳蛋鸡的产蛋率(P<0.05),降低料蛋比(P<0.05),增加平均蛋重(P<0.05),但对采食量未产生显著影响(P>0.05)。2)饲粮中添加色氨酸可显著增加鸡蛋的蛋白高度和哈氏单位(P<0.05),而对蛋黄颜色、蛋壳强度和蛋壳厚度均未产生显著影响(P>0.05)。3)饲粮中添加色氨酸显著增加了血清总蛋白含量(P<0.05),降低了血清尿素氮含量(P<0.05),对血清白蛋白和尿酸含量未产生显著影响(P>0.05);饲粮中添加色氨酸可显著降低血清游离脂肪酸含量(P<0.05),显著增加血清极低密度脂蛋白的含量(P<0.05),对血清甘油三酯、总胆固醇、高密度脂蛋白胆固醇和低密度脂蛋白胆固醇含量均未产生显著影响(P>0.05)。综上所述,在本试验条件下,产蛋高峰期新杨绿壳蛋鸡的适宜色氨酸水平为0.19%~0.22%。

关键词： 色氨酸; 绿壳蛋鸡; 生产性能; 蛋品质; 血清生化指标

本文引用格式

贺强 , 丁阳 , 袁超 , 李俊明 , 严华祥 , 邹晓庭 . 饲粮色氨酸水平对新杨绿壳蛋鸡生产性能、蛋品质及血清生化指标的影响[J]. 动物营养学报, 2015 , 27(8) : 2388 -2395 . DOI: 10.3969/j.issn.1006-267x.2015.08.010

Abstract

This study was conducted to investigate the effects of dietary supplementation of L-tryptophan (L-Trp) on performance, egg quality and serum biochemical parameters of Xinyang Green Shell laying hens, and to obtain the optimal supplemental levels of L-Trp for green shell laying hens (29 to 40 weeks of age). A total of 525 Xinyang green shell laying hens (28 weeks of age) with the similar egg production were randomly allotted to 5 treatments with 5 replicates of 21 birds each. The control treatment was given a basal diet containing 0.15% L-Trp, and the experiment treatments were supplemented with 200, 400, 600 and 800 mg/kg of L-Trp, to obtain the L-Trp levels in the experimental diets were 0.17%, 0.19%, 0.21% and 0.23%, respectively. The feeding trial lasted 13 weeks, including a 1-week acclimation period and a 12-week experimental period. The results were shown as follows: 1) dietary L-Trp significantly increased egg production and average egg weight (P<0.05), and decreased feed/egg (P<0.05), while no significant effect in feed intake (P>0.05) was found. 2) Albumen height and Haugh unit increased as dietary L-Trp increased from 0.15% to 0.19 and then decreased as L-Trp increased from 0.19% to 0.23%. Compared with the control group, albumen height and Haugh unit in 0.19% L-Trp group were significantly increased by 1.09% (P<0.05) and 6.5% (P<0.05), respectively. 3) Dietary L-Trp significantly increased serum total protein content (P<0.05) and decreased serum urea nitrogen content (P<0.05), but no significant effects on serum albumin and serum uric acid contents (P>0.05);dietary L-Trp significantly decreased serum free fatty acid content (P<0.05) and increased serum very low density lipoprotein content (P<0.05), while supplementing L-Trp had no significant effects on serum triglyceride, total cholesterol, high density lipoprotein cholesterol and low density lipoprotein cholesterol contents (P>0.05). In conclusion, the optimal tryptophan level of Xinyang green shell laying hens in peak period is 0.21% to 0.23% in this study.

Key words： tryptophan; green shell laying hens; performance; egg quality; serum biochemical parameters

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