动物营养学报2018，Vol.30Issue(4)：1481-1488,8.DOI:10.3969/j.issn.1006-267x.2018.04.032
枯草芽孢杆菌对产蛋后期蛋鸡生产性能和蛋壳品质的影响
Effects of Bacillus subtilis on Performance and Eggshell Quality of Laying Hens during Later Period of Laying
摘要
Abstract
This experiment was conducted to study the effects of Bacillus subtilis on performance and eggshell quality of laying hens during later period of laying. Four hundred and twenty 52?week?old Hy?Line brown lay?ing hens with similar egg production rate and bodyweight were randomly divided into 4 groups with 7 replicates per group and 15 hens per replicate. The control group was fed a corn?soybean meal basal diet,and the experi?mental groups were fed basal diets supplemented with 200,400 and 800 mg/kg Bacillus subtilis,respectively. The pre?experimental period lasted for 1 week, and the experimental period lasted for 12 weeks. The results showed as that compared with the control group:1)diet supplemented with 200,400 and 800 mg/kg Bacillus subtilis had no significant effects on the egg production rate and average egg weight(P>0.05),but significant?ly decreased the average daily feed intake(P<0.05); diet supplemented with 400 and 800 mg/kg Bacillus subtilis significantly decreased the ratio of feed to egg(P<0.05). 2)Diet supplemented with 200, 400 and 800 mg/kg Bacillus subtilis significantly increased the eggshell thickness(P<0.05), but significantly de?creased the broken egg rate(P<0.05); diet supplemented with 800 mg/kg Bacillus subtilis significantly in?creased the eggshell strength and eggshell percentage(P<0.05). 3)Diet supplemented with 800 mg/kg Bacil?lus subtilis improved the eggshell ultrastructure, and significantly increased the eggshell calcium content(P<0.05). In conclusion, diet supplemented with Bacillus subtilis can improve the performance,improve eggshell quality,and reduce broken egg rate of laying hens during later period of laying. The optimal supplemental level of Bacillus subtilis is 800 mg/kg in the present study.关键词
枯草芽孢杆菌/蛋鸡/生产性能/蛋壳品质Key words
Bacillus subtilis/laying hens/performance/eggshell quality分类
农业科技引用本文复制引用
崔闯飞,王晶,齐广海,张海军,史兆国,武书庚..枯草芽孢杆菌对产蛋后期蛋鸡生产性能和蛋壳品质的影响[J].动物营养学报,2018,30(4):1481-1488,8.基金项目
国家重点研发计划专项(2017YFD0500500) （2017YFD0500500）
国家自然科学基金项目(3157546) （3157546）
