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复合益生菌对育肥牛生长性能、肠道菌群及经济效益的影响

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文章旨在探究复合益生菌对育肥牛生长性能、肠道菌群及经济效益的影响.试验将100头健康,体重230 kg左右的西门塔尔杂交育肥牛随机分为4组,1个对照组(饲喂基础日粮)和3个试验组(分别饲喂基础日粮+200、400、600 mg/kg的复合益生菌),每组5个重复,每个重复5头牛,预试期14 d,正试期60 d.结果表明:(1)生产性能方面,与对照组相比,日粮添加200、400、600 mg/kg的复合益生菌后,可以显著提高育肥牛的平均日增重(ADG),显著降低料重比(F/G)(P<0.05),但3组育肥牛的平均日采食量(ADFI)无明显差异(P>0.05).(2)肠道菌群指标,日粮添加200、400、600 mg/kg的复合益生菌后,育肥牛肠道中大肠杆菌的数量显著降低(P<0.05),肠道中乳酸菌的数量显著升高,且随着添加剂量的增加,变化趋势越明显(P<0.05);各组沙门氏菌的数量无显著差异(P>0.05).(3)日粮添加200、400、600 mg/kg的复合益生菌后,显著提高育肥牛的养殖经济效益(P<0.05),添加量为400 mg/kg时,显著降低了育肥牛养殖的增重成本(P<0.05).综合各项指标看,复合益生菌添加剂量在400 mg/kg时的饲养效果最好.
Effects of compound probiotics on growth performance,intestinal microbiota,and economic efficiency of fattening cattle
This study examined the impacts of multi-strain probiotics on growth,gut microbes,and economics in fattening cattle. It involved 100 healthy Simmental crossbred cattle divided into a control(basal diet)and three experimental groups(basal+200,400,600 mg/kg probiotics). Each group had 5 replicates of 5 cattle. The pre-test was 14 days,and the trial was 60 days. Results showed:Probiotics(200,400,600 mg/kg)increased daily gain and lowered feed-to-gain ratio(P<0.05),but didn't affect feed intake(P>0.05).Gut microbiota analysis found probiotics reduced E. coli and increased Lactobacillus,with higher doses being more effective(P<0.05);Salmonella counts were similar(P>0.05).Probiotics improved farming economics(P<0.05),especially the 400 mg/kg dose(P<0.05).Overall,the best results were with 400 mg/kg of multi-strain probiotics.

compound probioticsfattening cattlegrowth performanceintestinal microbiotaeconomic efficiency

牛进、李平

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郑州工业应用技术学院,河南郑州 451100

复合益生菌 育肥牛 生长性能 肠道菌群 经济效益

2024

中国饲料
中国饲料工业协会

中国饲料

北大核心
影响因子:0.577
ISSN:1004-3314
年,卷(期):2024.(22)