Manure odor, which results in the increasing complaints and lawsuits, has increased the tension among swine producers and surrounding residents. The effects of Lactobacillus plantarum and different rates of soluble ca...Manure odor, which results in the increasing complaints and lawsuits, has increased the tension among swine producers and surrounding residents. The effects of Lactobacillus plantarum and different rates of soluble carbohydrates additions to swine manure on odorous compounds, chemical compounds and indigenous flora were evaluated. Additions were calculated on dried manure weight basis. Variables monitored included ammonia （NH3）, hydrogen sulfide （H2S）, odor offensiveness, pH, ammonium nitrogen（NH4^＋-N）, volatile fatty acids （VFAs）, urease and indigenous flora. The results indicated that the combination of L. plantarum and soluble carbohydrates dramatically reduced manure pH. Lower pH resulted in the reduction of NH3 volatilization （34.6%-92.4%, P〈0.01）, the increases of H2S （P〈 0.05） and NH4^＋-N （5.3%-17.5%, P〈0.05）. In addition, L. plantarum and soluble carbohydrates additions significantly reduced odor offensiveness, those VFAs related to malodor indicators（valeric acids, 12.3%-47.7%, P〈 0.05; iso-valeric, 3.5%-23.8%） and the main microorganisms responsible for odor production, with the number of Eubacteria in swine manure reducing by 4.9%, 11.6%, 17.4%, 34.1% and 32.2% respectively.展开更多
旨在系统评估复方中草药对鸡生长性能及肠道菌群的影响,本研究基于PRISMA指南,对CNKI、维普、万方、PubMed、Web of Science数据库建库至2025年9月发表的21篇文献进行Meta分析。通过RevMan 5.4软件,采用随机效应模型计算加权平均数及95...旨在系统评估复方中草药对鸡生长性能及肠道菌群的影响,本研究基于PRISMA指南,对CNKI、维普、万方、PubMed、Web of Science数据库建库至2025年9月发表的21篇文献进行Meta分析。通过RevMan 5.4软件,采用随机效应模型计算加权平均数及95%置信区间,并评估异质性与发表偏倚。结果表明:与空白组相比,复方中草药能显著提高鸡ADFI(MD=2.42 g·d^(-1),95%CI为[1.99,2.85])(P<0.01)、ADG(MD=3.23 g·d^(-1),95%CI为[2.48,3.98])(P<0.01)、及空肠VH/CD(MD=0.87,95%CI为[0.40,1.35])(P<0.01),显著降低F/G(MD=-0.19,95%CI为[-0.27,-0.11])(P<0.01)和大肠杆菌数量(MD=-1.48,95%CI为[-1.87,-1.09])(P<0.01),但在提高Shannon指数、Chao1指数、Simpson指数及乳酸菌数量方面,中草药组与空白组无显著差别(P>0.05);与抗生素组相比,在ADFI、ADG及F/G方面,两者无显著差别(P>0.05)。本研究通过Meta分析系统评估了复方中草药对鸡生产性能及肠道健康的影响,结果表明,复方中草药对肉蛋兼用型鸡ADFI、肉鸡及肉蛋兼用型鸡ADG的促进作用尤为显著,且在育雏期和育成期效果突出;同时可显著降低肉鸡F/G,但对蛋鸡相关指标无显著影响。复方中草药能选择性抑制大肠杆菌增殖,显著提高空肠绒毛高度/隐窝深度比值(VH/CD),但对菌群多样性指数及乳酸菌数量无显著影响。本研究结果为复方中草药在鸡生产中的应用提供了系统性参考,对中草药在鸡养殖中的应用及深入研究具有重要意义。展开更多
文摘Manure odor, which results in the increasing complaints and lawsuits, has increased the tension among swine producers and surrounding residents. The effects of Lactobacillus plantarum and different rates of soluble carbohydrates additions to swine manure on odorous compounds, chemical compounds and indigenous flora were evaluated. Additions were calculated on dried manure weight basis. Variables monitored included ammonia （NH3）, hydrogen sulfide （H2S）, odor offensiveness, pH, ammonium nitrogen（NH4^＋-N）, volatile fatty acids （VFAs）, urease and indigenous flora. The results indicated that the combination of L. plantarum and soluble carbohydrates dramatically reduced manure pH. Lower pH resulted in the reduction of NH3 volatilization （34.6%-92.4%, P〈0.01）, the increases of H2S （P〈 0.05） and NH4^＋-N （5.3%-17.5%, P〈0.05）. In addition, L. plantarum and soluble carbohydrates additions significantly reduced odor offensiveness, those VFAs related to malodor indicators（valeric acids, 12.3%-47.7%, P〈 0.05; iso-valeric, 3.5%-23.8%） and the main microorganisms responsible for odor production, with the number of Eubacteria in swine manure reducing by 4.9%, 11.6%, 17.4%, 34.1% and 32.2% respectively.
