饲料营养 Feed Science and Technology

低能饲粮中添加复合酶对肉鸡生长性能、肠道黏膜形态和食糜黏度的影响

  • 汤海鸥 ,
  • 高秀华 ,
  • 姚斌 ,
  • 李学军 ,
  • 王晓睿
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  • 1. 中国农业科学院饲料研究所, 北京 100081;
    2. 生物饲料开发国家工程研究中心, 北京 100081

收稿日期: 2013-07-31

  网络出版日期: 2013-12-24

基金资助

不同养殖模式、不同类型日粮的平衡供给技术研究与示范(2011BAD26B01)

Effects of Low Energy Diet Supplemented with Complex Enzyme on Growth Performance, Intestinal Mucosa Morphology and Digesta Viscosity of Broilers

  • TANG Hai ,
  • GAO Xiuhua ,
  • YAO Bin ,
  • LI Xuejun ,
  • WANG Xiaorui
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  • 1. Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
    2. National Engineering Research Center of Biological Feed, Beijing 100081, China

Received date: 2013-07-31

  Online published: 2013-12-24

摘要

本试验旨在研究低能饲粮中添加复合酶对肉鸡生长性能、肠道黏膜形态和食糜黏度的影响。选取320只1日龄爱拔益加肉鸡,随机分为4组,每组8个重复,每个重复10只。Ⅰ组为正对照组,饲喂玉米-豆粕型常规饲粮;Ⅱ组为负对照组,饲粮配方原料中增加杂粕和麦类用量,降低210 kJ/kg代谢能;Ⅲ、Ⅳ组为常规剂量加酶组和高剂量加酶组,分别在负对照组饲粮基础上添加0.02%和0.20%复合酶。试验期42 d。结果表明,Ⅱ组料重比极显著高于Ⅳ组(P<0.01),Ⅰ、Ⅲ组料重比显著低于Ⅱ组(P<0.05);Ⅰ、Ⅳ组绒毛高度极显著高于其他2组(P<0.01),Ⅱ组绒毛高度显著低于Ⅲ组(P<0.05);Ⅱ组隐窝深度极显著高于其他3组(P<0.01),Ⅳ组隐窝深度显著低于Ⅰ、Ⅲ组(P<0.05);Ⅳ组绒毛高度/隐窝深度(V/C)值极显著高于其他3组(P<0.01),Ⅱ组V/C值显著低于Ⅰ、Ⅲ组(P<0.05);各组之间黏膜厚度无显著差异(P>0.05);Ⅳ组食糜黏度显著低于Ⅱ组(P<0.05)。由此可见,饲粮中添加0.02%和0.20%复合酶对肉鸡生长性能、肠道黏膜形态和食糜黏度均具有较好的改善作用;添加0.20%复合酶可进一步提高复合酶的应用效果。

本文引用格式

汤海鸥 , 高秀华 , 姚斌 , 李学军 , 王晓睿 . 低能饲粮中添加复合酶对肉鸡生长性能、肠道黏膜形态和食糜黏度的影响[J]. 动物营养学报, 2014 , 26(1) : 190 -196 . DOI: 10.3969/j.issn.1006-267x.2014.01.025

Abstract

This experiment was conducted to investigate the effects of low energy diet supplemented with compound enzyme on growth performance, intestinal mucosa morphology and digesta viscosity of broilers. Three hundred and twenty one-day-old broilers were randomly assigned to four groups with eight replicates in each group and ten broilers in each replicate. The positive control group (group Ⅰ) was fed a corn-soybean meal normal diet. The diet of negative control group (group Ⅱ) was reduced by 210 kJ/kg metabolizable energy, and the content of miscellaneous meal and wheat was increased in this group. The normal additive dosage of enzyme group (group Ⅲ) and high additive dosage of enzyme group (group Ⅳ) were fed the negative control group diet supplemented with 0.02% and 0.20% compound enzyme, respectively. The experiment lasted for 42 days. The results showed that the ratio of feed to gain in group Ⅱ was significantly higher than that in group Ⅳ (P<0.01); the ratio of feed to gain in groups Ⅰ and Ⅲ was significantly lower than that in group Ⅲ (P<0.05). The villus height in groups Ⅰ and Ⅳ was significantly higher than that in other two groups (P<0.01), and the villus height in group Ⅱ was significantly lower than that in group Ⅲ (P<0.05). The crypt depth in group Ⅱ was significantly higher than that in other three groups (P<0.01), and the crypt depth in group Ⅳ was significantly lower than that in groups Ⅰ and Ⅲ (P<0.05). The villus height to crypt depth (V/C) in group Ⅳ was significantly higher than that in other three groups (P<0.05), and the V/C in group Ⅱ was significantly lower than that in groups Ⅰ and Ⅲ (P<0.05). There was no significant difference in mucosa thickness among all groups (P>0.05). The digesta viscosity in group Ⅳ was significantly lower than that in group Ⅱ (P<0.05). In conclusion, the diet supplemented with 0.02% and 0.20% complex enzyme can improve the growth performance, intestinal mucosa morphology and digesta viscosity of broilers, and supplemented with 0.20% complex enzyme is better.

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