粪肠球菌对产蛋后期蛋鸡生产性能、蛋品质及肠道组织形态的影响

doi:10.16431/j.cnki.1671-7236.2020.05.014

摘要/Abstract

摘要： 试验旨在研究添加不同剂量的粪肠球菌对产蛋后期蛋鸡生产性能、蛋品质及肠道形态结构的影响。选取70周龄产蛋率相近的海兰褐蛋鸡270只，随机分为3个处理，每个处理6个重复，每个重复15只鸡。试验设对照组（饲喂基础日粮）、试验Ⅰ组（基础日粮+3.75 mg/kg粪肠球菌）和试验Ⅱ组（基础日粮+7.5 mg/kg粪肠球菌），预试期7 d，正试期50 d。结果表明，与对照组相比，试验Ⅰ、Ⅱ组产蛋后期蛋鸡产蛋率、产蛋量极显著提高（P<0.01），料蛋比极显著降低（P<0.01）；与对照组相比，试验Ⅰ、Ⅱ组蛋鸡的蛋壳厚度、蛋壳强度、蛋形指数、蛋白高度、哈夫单位、蛋黄相对重、蛋壳相对重均无显著变化（P>0.05）；与对照组相比，试验Ⅰ、Ⅱ组产蛋后期蛋鸡十二指肠、回肠的黏膜厚度极显著增加（P<0.01），回肠绒毛高度显著提高（P<0.05）。综上所述，在产蛋后期蛋鸡日粮中添加适宜剂量的粪肠球菌可提高蛋鸡生产性能，改善肠道形态结构。

关键词: 粪肠球菌; 蛋鸡; 生产性能; 蛋品质; 肠道形态结构

Abstract: The purpose of this experiment was to study the effects of Enterococcus faecalis on production performance,egg quality and intestinal morphology of laying hens during the late laying period.A total of 270 Hy-Line Brown laying hens aged of 70 weeks were randomly divided into 3 groups with 6 replicates per group and 15 hens per replicates.The test was set three groups:Control group (feeding the basic diet),group Ⅰ (basic diet+3.75 mg/kg Enterococcus faecalis),group Ⅱ (basal diet+7.5 mg/kg Enterococcus faecalis).The preliminary test lasted for 7 days and the experiment lasted for 50 days.The results showed that compared with control group,the egg laying rate and egg mass of groups Ⅰ and Ⅱ were extremely significantly increased (P<0.01),and feed-to-egg was extremely significantly reduced (P<0.01).Compared with control group,there was no significant change in eggshell thickness,eggshell strength,egg shape index,protein height,Haugh unit,relative weight of egg yolk,and relative eggshell weight of groups Ⅰ and Ⅱ (P>0.05).Compared with control group,the mucosal thickness of the duodenum and ileum at the late laying period of groups Ⅰ and Ⅱ were extremely significantly increased (P<0.01),and the ileal villus height was significantly increased (P<0.05).In conclusion,the addition of a suitable dose of Enterococcus faecalis in diets could improve production performance and intestinal morphology of laying hens during the late laying period.

Key words: Enterococcus faecalis; laying hens; production performance; egg quality; intestinal morphology

中图分类号:

S816.7

陶振阳, 张耀文, 曹忠洋, 焦国宝, 张志丹, 刘方圆, 王杰, 王占彬. 粪肠球菌对产蛋后期蛋鸡生产性能、蛋品质及肠道组织形态的影响[J]. 中国畜牧兽医, 2020, 47(5): 1413-1420.

TAO Zhenyang, ZHANG Yaowen, CAO Zhongyang, JIAO Guobao, ZHANG Zhidan, LIU Fangyuan, WANG Jie, WANG Zhanbin. Effects of Enterococcus faecalis on Production Performance,Egg Quality and Intestinal Morphology of Laying Hens During the Late Laying Period[J]. China Animal Husbandry and Veterinary Medicine, 2020, 47(5): 1413-1420.

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