复合益生菌对老龄蛋鸡生产性能及蛋品质的影响
Effects of compound probiotics on production performance and egg quality of aged laying hens
刘昌林 1薛夫光 2楚文伦 1罗嘉慧 2邓佳怡 2胡美珺 2李裕卫1
作者信息
- 1. 南昌市农业科学院,江西 南昌 330038
- 2. 江西农业大学动物科学技术学院,江西 南昌 330006
- 折叠
摘要
试验旨在探究复合益生菌对产蛋后期海兰褐蛋鸡生产性能和脂肪沉积的影响,以期为复合益生菌在蛋鸡中的应用提供参考.试验选取500日龄海兰褐蛋鸡180只,随机分为2组,每组6个重复,每个重复15只鸡.对照组饲喂基础饲粮,试验组在基础饲粮中添加0.75%的复合益生菌制剂.试验期120 d(分为两期,每期60 d).结果显示,与对照组相比,饲粮添加复合益生菌可显著降低第二阶段的蛋畸形率(P<0.05),显著提高蛋壳强度(P<0.05),延缓卵巢衰退,显著降低蛋鸡腹部脂肪沉积(P<0.05),并显著提高空肠的绒毛高度以及绒隐比(P<0.05).研究表明,饲粮中添加复合益生菌,可通过减少产蛋后期蛋鸡腹部脂肪沉积,延缓卵巢的衰退,进而提高产蛋率和蛋品质.
Abstract
The purpose of this study was to explore the effects of compound probiotics on the production performance and fat deposition of Hyline brown laying hens in the late laying period,in order to provide reference for the application of compound probiotics in laying hens.A total of one hundred and eighty 500-day-old Hyline brown laying hens were randomly divided into two groups,with six replicates in each group and 15 hens in each replicate.The control group was fed a basal diet,and the experimental group supplemented with 0.75%compound probiotic preparation.The experiment lasted for 120 days(divided into two periods of 60 days each).The results showed that compared with the control group,dietary compound probiotics significantly decreased the rate of egg malformation in the second stage(P<0.05),significantly increased eggshell strength(P<0.05),delayed ovarian decline,significantly decreased abdominal fat deposition(P<0.05),and significantly increased the villus height and the ratio of pile-to-crypt in jejunum(P<0.05).The results show that dietary supplementation of complex probiotics can reduce abdominal fat deposition and delay ovarian decline of laying hens in the late laying period,thus improving laying rate and egg quality.
关键词
复合益生菌制剂/蛋鸡/生产性能/蛋品质/脂肪代谢Key words
compound probiotic preparation/laying hens/production performance/egg quality/fat metabolism引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据