摘要
文章旨在探讨黄芩提取物对热应激蛋鸡产蛋性能、蛋品质和免疫功能的影响。试验将600只产蛋性能相近、70周龄左右的健康罗曼粉蛋鸡随机分为5组,每组8个重复,每个重复15只。其中对照组和热应激组分别饲喂基础日粮。试验Ⅰ、Ⅱ和Ⅲ组分别在基础日粮中添加15、30和60 mg/kg黄芩苷提取物的,试验为期9周。结果表明:1~3周,试验Ⅱ和Ⅲ组蛋鸡产蛋率较热应激组分别显著提高8.27%和11.92%(P<0.05),料蛋比显著降低7.21%和9.34%(P<0.05),软破蛋率分别显著降低7.38%和26.57%(P<0.05);4~6周,试验Ⅱ和Ⅲ组蛋鸡产蛋率较热应激组分别显著提高11.35%和10.98%(P<0.05),料蛋比显著降低10.50%和10.45%(P<0.05),软破蛋率分别显著降低15.33%和16.11%(P<0.05);7~9周,试验Ⅱ和Ⅲ组蛋鸡产蛋率较热应激组分别显著提高4.08%和7.71%(P<0.05),料蛋比显著降低2.95%和6.01%(P<0.05),软破蛋率分别显著降低14.09%和15.28%(P<0.05)。试验Ⅱ和Ⅲ组蛋壳强度较热应激组显著提高(P<0.05),试验Ⅲ组哈氏单位较热应激组显著提高(P<0.05),试验Ⅱ和Ⅲ组蛋粗蛋白质和钙含量较热应激组显著提高(P<0.05),试验Ⅱ和Ⅲ组蛋鸡血清白细胞介素-10(IL-10)和肿瘤坏死因子α(TNF-α)含量显著降低(P<0.05),免疫球蛋白A(IgA)和免疫球蛋白G(IgG)含量显著提高(P<0.05);总之,试验数据显示,补充黄芩提取物(60 mg/kg)可通过增强热应激蛋鸡免疫力提高蛋鸡生产性能,改善蛋品质。
This study aims to explore the effects of Huangcen extract on egg production performance,egg quality,and immune function of heat stressed laying hens.Select 600 healthy Roman powder laying hens with similar egg production performance and around 70 weeks of age,and randomly divide them into 5 groups with 8 replicates in each group,with 15 chickens per replicate.The control group and heat stress group were fed with basic diets,respectively.Experimental groupsⅠ,Ⅱ,andⅢwere fed with experimental feed supplemented with 15,30,and 60 mg/kg baicalin extract on the basis of the basic feed,for a total of 9 weeks.The results showed that after 1-3 weeks,the egg production rates of experimental groupsⅡandⅢwere significantly increased by 8.27%and 11.92%(P<0.05)compared to the heat stress group,while the feed to egg ratio was significantly reduced by 7.21%and 9.34%(P<0.05).The soft break rate was significantly reduced by 7.38%and 26.57%(P<0.05),respectively;From 4 to 6 weeks,the egg production rates of experimental groupsⅡandⅢwere significantly increased by 11.35%and 10.98%(P<0.05)compared to the heat stress group,while the feed to egg ratio was significantly reduced by 10.50%and 10.45%(P<0.05).The soft break rate was significantly reduced by 15.33%and 16.11%(P<0.05),respectively;From 7 to 9 weeks,the egg production rates of experimental groupsⅡandⅢwere significantly increased by 4.08%and 7.71%(P<0.05)compared to the heat stress group,while the feed to egg ratio was significantly reduced by 2.95%and 6.01%(P<0.05).The soft break rate was significantly reduced by 14.09%and 15.28%(P<0.05),respectively.The eggshell strength of experimental groupsⅡandⅢwas significantly increased compared to the heat stress group(P<0.05),and the Hasselblad unit of experimental groupⅢwas significantly increased compared to the heat stress group(P<0.05).The crude protein and calcium content of experimental groupsⅡandⅢwere significantly increased compared to the heat stress group(P<0.05).The serum levels of IL-10 and TNF-αin
作者
周昊
况丹
ZHOU Hao;KUANG Dan(Yichun Vocational Technical College,Yichun,Jiangxi Province,336000,China)
出处
《中国饲料》
北大核心
2024年第20期35-38,共4页
China Feed
关键词
热应激
黄芩提取物
蛋鸡
生产性能
蛋品质
免疫功能
heat stress
scutellaria baicalensis georgi extract
layer
production performance
egg quality
immune function
