饲料营养 Feed Science and Technology

酸化剂对蛋鸡生产性能、蛋品质及肠道相关指标的影响

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  • 1. 西北农林科技大学动物科技学院, 杨陵 712100;
    2. 乐达(广州)香味剂有限公司, 广州 510730;
    3. 华南农业大学, 广州 510642
刘艳利(1993-), 女, 河南洛阳人, 硕士研究生, 动物营养与饲料科学专业.E-mail:1085752204@qq.com

收稿日期: 2014-09-22

  网络出版日期: 2015-02-09

Effect of Acidifier on Performance, Egg Quality and Selected Indices of Gastrointestinal Tract in Laying Hens

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  • 1. College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China;
    2. Lucta (Guangzhou) Flavors Co. Ltd, Guangzhou 510730, China;
    3. South China Agricultural University, Guangzhou 510642, China

Received date: 2014-09-22

  Online published: 2015-02-09

摘要

本试验旨在研究酸化剂对蛋鸡生产性能、蛋品质及肠道相关指标的影响.选取25周龄罗曼褐壳蛋鸡672只,随机分为4个组,每组7个重复,每个重复24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0.05%、0.10%和0.20%酸化剂的试验饲粮,试验期60 d.结果表明:1)与对照组相比,饲粮添加0.05%酸化剂显著提高了蛋鸡的平均日采食量(P<0.05);添加0.20%酸化剂显著降低了料蛋比(P<0.05).2)与对照组相比,饲粮添加酸化剂显著增强了试验第30和60天的蛋壳强度(P<0.05);添加0.20%酸化剂显著提高了试验第30和60天的蛋白高度(P<0.05).3)与对照组相比,酸化剂的添加对试验第30和60天消化道pH没有显著影响(P>0.05),但显著提高了十二指肠食糜中淀粉酶和胰蛋白酶的活性(P<0.05),并显著降低了消化道大肠杆菌的数量(P<0.05).4)与对照组相比,饲粮添加酸化剂显著提高了试验第30和60天钙与磷的表观代谢率(P<0.05).饲粮添加酸化剂可改善产蛋鸡饲料转化效率、鸡蛋品质;提高蛋鸡肠道消化酶活性及钙、磷表观代谢率;改善肠道微生态环境.

本文引用格式

刘艳利, 辛洪亮, 黄铁军, 刘磊, 阳成波, 杨小军 . 酸化剂对蛋鸡生产性能、蛋品质及肠道相关指标的影响[J]. 动物营养学报, 2015 , 27(2) : 526 -534 . DOI: 10.3969/j.issn.1006-267x.2015.02.024

Abstract

This experiment was conducted to evaluate the effects of acidifier on performance, egg quality and selected indices of gastrointestinal tract in laying hens. A total of six hundreds and seventy two 25-week-old Lohmann brown laying hens were assigned to the following 4 groups with 7 replicates per group and 24 hens per replicate. Control group was fed with basal diet, while the other 3 groups were fed 0.05%, 0.10% and 0.20% acidifier based on the basal diet, respectively. The experiment lasted for 60 d. Results suggested as follows: 1) compared with control group, 0.05% acidifier had significantly higher average daily feed intake (P<0.05). The ratio of feed to egg weight was significantly increased with the addition of 0.20% acidifier (P<0.05). 2) Compared with control group, supplementing the diet with acidifier significantly increased eggshell strength on days 30 and 60 (P<0.05). The albumen height was significantly decreased with the addition of 0.20% acidifier on days 30 and 60 (P<0.05). 3) Compared with control group, dietary acidifier significantly decreased the population of Escherichia coli in digestible tract (P<0.05), but pH in digestible tract was significantly unaffected (P>0.05), at the same time, the activities of amylase and trypsin in duodenum were significantly enhanced (P<0.05). 4) Compared with control group, adding acidifier was significantly improved the apparently metabolic rate of calcium and phosphorus on days 30 and 60 (P<0.05). In conclusion, dietary acidifier supplementation has the potential to enhance the enzyme activities and apparently metabolic rates of calcium and phosphorus, thus improve performance, egg quality and intestinal microecology environment in laying hens.

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