动物营养学报 >

2021 , Vol. 33 >Issue 2: 779 - 791

DOI: https://doi.org/10.3969/j.issn.1006-267x.2021.02.019

禽营养与饲料 POULTRY NUTRITION AND FEED

赖氨酸和其他必需氨基酸对1~18日龄中速型黄羽肉鸡生长性能、血清生化指标、器官指数和肠道组织形态的影响

  • 施寿荣 ,
  • 刘勇强 ,
  • 张珊 ,
  • 朱沛霁
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  • 1. 中国农业科学院家禽研究所, 扬州 225125;
    2. 江苏立华牧业股份有限公司, 常州 213100
施寿荣(1981-),男,江苏扬州人,副研究员,博士,主要从事家禽饲料营养研究。E-mail:ssr236@163.com

收稿日期: 2020-08-31

  网络出版日期: 2021-02-04

基金资助

江苏现代农业（肉鸡）产业技术体系建设项目（JATS[2019]379）

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Effects of Lysine and Other Essential Amino Acids on Growth Performance, Serum Biochemical Indexes, Organ Indexes and Intestinal Morphology of Medium-Speed Yellow-Feather Broilers during 1 to 18 Days of Age

  • SHI Shourong ,
  • LIU Yongqiang ,
  • ZHANG Shan ,
  • ZHU Peiji
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  • 1. Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou 225125, China;
    2. Lihua Livestock Company of Jiangsu Province, Changzhou 213100, China

Received date: 2020-08-31

  Online published: 2021-02-04

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摘要

本试验旨在研究赖氨酸和其他必需氨基酸对1~18日龄中速型黄羽肉鸡生长性能、血清生化指标、器官指数和肠道组织形态的影响。试验选取810羽雄性1日龄中速型黄羽肉鸡，随机分成9个组，每组6个重复，每个重复15羽，分别饲喂9种不同氨基酸水平的饲粮。试验设3个赖氨酸水平（0.89%、1.05%、1.20%）和3个其他必需氨基酸（蛋氨酸+苏氨酸+色氨酸）水平（低水平：0.66%蛋氨酸+0.58%苏氨酸+0.16%色氨酸；中水平：0.78%蛋氨酸+0.68%苏氨酸+0.19%色氨酸；高水平：0.90%蛋氨酸+0.78%苏氨酸+0.22%色氨酸），试验期18 d。结果表明：1）1.05%、1.20%赖氨酸水平组平均日增重显著高于0.89%赖氨酸水平组（P<0.05），1.05%赖氨酸水平组料重比显著低于0.89%、1.20%赖氨酸水平组（P<0.05）。2）赖氨酸和其他必需氨基酸交互作用对血清总蛋白（TP）含量有显著影响（P<0.05）。1.05%赖氨酸水平组的血清TP和尿酸含量显著低于0.89%、1.20%赖氨酸水平组（P<0.05）；低、中其他必需氨基酸水平组的血清胆固醇和高密度脂蛋白含量显著高于高其他必需氨基酸水平组（P<0.05），低、中其他必需氨基酸水平组的血清甘油三酯含量显著低于高其他必需氨基酸水平组（P<0.05）。3）赖氨酸和其他必需氨基酸交互作用对法氏囊指数有显著影响（P<0.05），赖氨酸水平为1.20%、蛋氨酸水平为0.78%、苏氨酸水平为0.68%、色氨酸水平为0.19%时，法氏囊指数最高。中其他必需氨基酸水平组的胸腺指数显著高于低、高其他必需氨基酸水平组（P<0.05）。4）赖氨酸和其他必需氨基酸交互作用对空肠隐窝深度有显著影响（P<0.05）。0.89%赖氨酸水平组的空肠绒毛高度显著高于1.05%赖氨酸水平组（P<0.05）。低其他必需氨基酸水平组的空肠隐窝深度显著低于中、高其他必需氨基酸水平组（P<0.05），而绒毛高度/隐窝深度显著高于中、高其他必需氨基酸水平组（P<0.05）。综上所述，在本试验条件下，1~18日龄中速型黄羽肉鸡饲粮赖氨酸为水平1.05%、蛋氨酸水平为0.78%、苏氨酸水平为0.68%、色氨酸水平为0.19%时，可以获得最佳的生长性能和血清生化指标。

关键词： 中速型黄羽肉鸡; 赖氨酸; 蛋氨酸; 苏氨酸; 色氨酸

本文引用格式

施寿荣 , 刘勇强 , 张珊 , 朱沛霁 . 赖氨酸和其他必需氨基酸对1~18日龄中速型黄羽肉鸡生长性能、血清生化指标、器官指数和肠道组织形态的影响[J]. 动物营养学报, 2021 , 33(2) : 779 -791 . DOI: 10.3969/j.issn.1006-267x.2021.02.019

Abstract

The aim of this experiment was to study the effects of lysine and other essential amino acids on growth performance, serum biochemical indexes, organ indexes and intestinal morphology of medium-speed yellow-feather broilers during 1 to 18 days of age. A total of 810 one-day-old male medium-speed yellow-feather broilers were randomly divided into 9 groups with 6 replicates per group and 15 broilers per replicate, and fed with 9 different amino acid levels of diets. Three lysine levels (0.89%, 1.05% and 1.20%) and three other essential amino acids levels (low-level: 0.66% methionine+0.58% threonine+0.16% tryptophan; medium-level: 0.78% methionine+0.68% threonine+0.19% tryptophan; high-level: 0.90% methionine+0.78% threonine+0.22% tryptophan) were designed. The experimental period was 18 days. The results showed as follows: 1) the average daily gain of 1.05% and 1.20% lysine level groups was significantly higher than that of 0.89% lysine level group (P<0.05), and the ratio of feed to gain of 1.05% lysine level group was significantly lower than that of 0.89% and 1.20% lysine level groups (P<0.05). 2) The interaction of lysine and other essential amino acids had significant effect on serum total protein (TP) content (P<0.05). The contents of TP and uric acid in serum of 1.05% lysine level group were significantly lower than those of 0.89% and 1.20% lysine level groups (P<0.05); the contents of cholesterol and high density lipoprotein in serum of low and medium other essential amino acids level groups were significantly higher than those of high other essential amino acids level group (P<0.05), and the serum triglyceride content of low and medium other essential amino acids level groups was significantly lower than those of high other essential amino acids level group (P<0.05). 3) The interaction of lysine and other essential amino acids had significant effect on bursa of Fabricius index (P<0.05), which was highest when lysine level was 1.20%, methionine 0.78% level was, threonine level was 0.68% and tryptophan level was 0.19%. The thymus index of medium other essential amino acids level group was significantly higher than that of low and high other essential amino acids level groups (P<0.05). 4) The interaction of lysine and other essential amino acids had significant effect on jejunum crypt depth (P<0.05). The jejunum villus height of 0.89% lysine level group was significantly higher than that of 1.05% lysine level group (P<0.05). The jejunum crypt depth of low other essential amino acids level group was significantly lower than that of medium and high other essential amino acids level groups (P<0.05), and the villus height/crypt depth was significantly higher than that of medium and high other essential amino acids level groups (P<0.05). In conclusion, when the dietary levels of lysine, methionine, threonine and tryptophan are 1.05%, 0.78%, 0.68% and 0.19%, respectively, the growth performance and serum biochemical indexes of medium-speed yellow-feather broilers during 1 to 18 days of age are the best under this experimental conditions.

Key words： medium-speed yellow-feather broilers; lysine; methionine; threonine; tryptophan

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