摘要
本试验旨在探究酵母培养物对蛋鸡生产性能、蛋品质、免疫功能和盲肠微生物的影响。选取288只65周龄的海兰褐蛋鸡,随机分为4个组,每组6个重复,每个重复12只鸡。对照组(NC组)饲喂基础饲粮,试验组分别在基础饲粮中添加0.3%(T1组)、0.5%(T2组)和0.8%(T3组)的酵母培养物。试验期8周。结果显示:1)与NC组相比,T1组和T2组的产蛋率显著提高(P<0.05)。2)与NC组相比,T1组的鸡蛋哈氏单位显著提高(P<0.05)。3)与NC组相比,T2组和T3组的血清免疫球蛋白G含量显著提高(P<0.05)。4)与NC组相比,在门水平上,T2组的盲肠脱硫杆菌门(Desulfobacterota)的相对丰度显著降低(P<0.05);在属水平上,T2组的盲肠乳杆菌属(Lactobacillus)的相对丰度显著增加(P<0.05),而盲肠脱硫弧菌属(Desulfovibrio)的相对丰度显著降低(P<0.05)。综上所述,饲粮中添加酵母培养物可以提高蛋鸡产蛋率,改善蛋品质,增强免疫功能,改善盲肠微生物群落结构。本试验条件下,蛋鸡饲粮中酵母培养物的适宜添加水平为0.5%。
The aim of this experiment was to investigate the effects of yeast culture on performance,egg quality,immune function and cecal microflora of laying hens.A total of 288 sixty-five-week-old Hy-Line brown laying hens were randomly divided into 4 groups with 6 replicates per group and 12 hens per replicate.The control group(NC group)was fed a basal diet,and the experimental groups were fed the basal diet supplemented with 0.3%(T1 group),0.5%(T2 group)and 0.8%(T3 group)yeast culture,respectively.The experiment lasted for 8 weeks.The results showed as follows:1)compared with the NC group,the laying rate of T1 group and T2 group was significantly increased(P<0.05).2)Compared with the NC group,the egg Haugh unit of T1 group was significantly increased(P<0.05).3)Compared with the NC group,the serum immunoglobulin G content of T2 group and T3 group was significantly increased(P<0.05).4)Compared with the NC group,at the phylum level,the relative abundance of Desulfobacterota in cecum of T2 group was significantly decreased(P<0.05);at the genus level,the relative abundance of Lactobacillus in cecum of T2 group was significantly increased(P<0.05),and the relative abundance of Desulfovibrio in cecum was significantly decreased(P<0.05).In summary,dietary yeast culture can increase the laying rate of laying hens,improve egg quality,enhance immune function,and improve the cecal microbial community structure.Under this experimental condition,the appropriate supplemental level of yeast culture for laying hens is 0.5%.
作者
王妍
肖蕴祺
郭长征
陈静龙
黎观红
施寿荣
WANG Yan;XIAO Yunqi;GUO Changzheng;CHEN Jinglong;LI Guanhong;SHI Shourong(Jiangsu Institute of Poultry Science,Yangzhou 225125,China;College of Animal Science and Technology,Jiangxi Agricultural University,Nanchang 330045,China)
出处
《动物营养学报》
北大核心
2025年第9期5877-5885,共9页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
扬州市科技计划项目-创新能力建设计划项目-市级重点实验室(YZ2024242)
国家自然科学基金-青年科学基金项目(32202711)。
