| 饲用枯草芽孢杆菌对育肥猪生长性能、养分消化、粪便特征及经济效益的影响 |
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| 引用本文： | 田跃,董红刚,沈泽锋.饲用枯草芽孢杆菌对育肥猪生长性能、养分消化、粪便特征及经济效益的影响[J].中国饲料,2021,1(8):45-48. |
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| 作者姓名： | 田跃 董红刚 沈泽锋 |
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| 作者单位： | （1.扬州工业职业技术学院，江苏扬州 225127,2.扬州农业科学研究院，江苏扬州 225000,3.苏州市吴中区市场监督局，江苏苏州 215000） |
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| 基金项目： | 扬州市科技局软科学课题(YZ2019214)。 |
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| 摘 要： | 文章旨在评估日粮添加不同水平的饲用枯草芽孢杆菌对9～24周龄育肥猪生长性能、养分表观消化及粪便特征的影响。将600头9周龄平均初始体重为（22.96±0.09）kg的商品猪随机分为3组，每组5个重复，每个重复40头。对照组饲喂基础日粮，T1和T2组肥猪分别饲喂基础日粮+100和200?mg/kg枯草芽孢杆菌（3×108?CFU/kg），试验共进行15周。结果：与对照组相比，T2组15?w育肥猪体重显著提高4.37%（P＜0.05），同时T1和T2组1～15?w育肥猪的平均日增重较对照组分别显著提高3.81%和5.35%（P＜0.05），饲料报酬分别显著提高4.44%和4.44%（P＜0.05）。T1和T2组育肥猪干物质表观消化率分别较对照组显著提高8.75%和9.37%（P＜0.05），同时T1组育肥猪有机物表观消化率较对照组显著提高了6.13%（P＜0.05）。日粮添加100和200?mg/kg枯草芽孢杆菌可以显著降低6和15?w育肥猪粪便中氨气浓度和大肠杆菌数量（P＜0.05），同时T1和T2组15?w育肥猪粪便中乳酸杆菌数量也显著高于对照组（P＜0.05）。结论：日粮添加100～200?mg/kg饲用枯草芽孢杆菌（3×108?CFU/kg）可改善9～24周龄育肥猪的饲料报酬，改善干物质表观消化率，降低粪中氨气浓度和大肠杆菌数量。
关键词]育肥猪|枯草芽孢杆菌|生长性能|养分消化|粪便特征
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| 关 键 词： | 育肥猪 枯草芽孢杆菌 生长性能 养分消化 粪便特征 |
Effects of feed bacillus subtilis on growth performance,nutrient digestion,fecal characteristics and economic benefit of finishing pigs |
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| TIAN Yue,DONG Honggang,SHEN Zefeng.Effects of feed bacillus subtilis on growth performance,nutrient digestion,fecal characteristics and economic benefit of finishing pigs[J].China Feed,2021,1(8):45-48. |
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| Authors: | TIAN Yue DONG Honggang SHEN Zefeng |
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| Institution: | (Yangzhou Polytechnic Institute,Jiangsu,Yangzhou Province 225127,China;Yangzhou Academy of Agricultural Sciences,Jiangsu,Yangzhou Province 225000,China;Market Supervision Bureau in Wuzhou Suzhou Area,Jiangsu,Suzhou Province 215000,China) |
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| Abstract: | This experiment was conducted to evaluate the effects of dietary supplementation of different levels of feeding bacillus subtilis on growth performance,nutrient apparent digestion and fecal characteristics of finishing pigs aged 9~24 weeks.Six hundred 9~week~old commercial pigs with an average initial body weight of(22.96±0.09)kg were randomly divided into 3 groups with 5 replicates per group and 40 pigs per replicate.Pigs in control group were fed basal diet,and pigs in T1 and T2 groups were fed basal diet+100 and 200 mg/kg bacillus subtilis(3×108 CFU/kg),respectively.The experiment lasted for 15 weeks.Results:Compared with control group,body weight of 15 w finishing pigs in T2 group was significantly increased by 4.37%(P<0.05),while average daily gain of 1~15 w finishing pigs in T1 and T2 groups was significantly increased by 3.81%and 5.35%(P<0.05),respectively,and feed return was significantly increased by 4.44%and 4.44%(P<0.05),respectively.Compared with the control group,the apparent digestibility of dry matter in T1 and T2 groups was significantly increased by 8.75%and 9.37%(P<0.05),respectively,and the apparent digestibility of organic matter in T1 group was significantly increased by 6.13%(P<0.05).The supplementation of 100 and 200 mg/kg bacillus subtilis significantly decreased the ammonia concentration and the number of Escherichia coli in fecal of pigs at 6 and 15 w(P<0.05),and the number of Lactobacillus in stool of pigs at 15 w in T1 and T2 groups was significantly higher than that in control group(P<0.05).Conclusions:Dietary supplementation of 100~200 mg/kg feeding Bacillus subtilis(3×108 CFU/kg)can improve feed return,dry matter apparent digestibility,and reduce fecal ammonia concentration and Escherichia coli number of finishing pigs aged from 9 to 24 weeks. |
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| Keywords: | finishing pig bacillus subtilis growth performance nutrient digestion fecal characteristic economic benefit |
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