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植物乳杆菌GF103对生长猪生长性能、营养物质消化率及粪便微生物数量的影响

DOI: 10.3969/j.issn.1006-267x.2015.06.022

Keywords: 植物乳杆菌,生长猪,生长性能,营养物质消化率,粪便微生物

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Abstract:

本试验旨在研究植物乳杆菌(Lactobacillusplantarum)GF103对生长猪生长性能、营养物质消化率及粪便微生物数量的影响。利用随机区组试验设计方法,将平均体重(26.36±1.93)kg的300头生长猪分为5个组,每组3个重复,每重复20头,重复内生长猪日龄一致、公母各占1/2。对照(CON)组饲喂基础饲粮,抗生素(PC)组在基础饲粮中添加杆菌肽锌40mg/kg,植物乳杆菌1~3(T1、T2和T3)组分别在基础饲粮中添加1×109、5×109、1×1010CFU/kg的植物乳杆菌GF103。试验预试期7d,正试期30d。结果表明:1)T1组生长猪平均日增重和平均日采食量均显著高于其他各组(P<0.05),料重比则显著低于其他各组(P<0.05)。T2和T3组生长猪的平均日增重、平均日采食量和料重比与PC和CON组相比差异均不显著(P>0.05)。各组间生长猪腹泻率无显著差异(P>0.05)。2)T1、T3及CON组的总能、干物质、有机物质、粗蛋白质、粗脂肪消化率显著高于PC和T2组(P<0.05),各组之间的中性洗涤纤维和磷的消化率无显著差异(P>0.05)。3﹚T1、T2和T3组生长猪粪便中乳酸菌数量显著高于CON和PC组(P<0.05),并且粪便乳酸菌数量随着植物乳杆菌GF103添加剂量的增加而增加;各组生长猪粪便大肠杆菌数量无显著差异(P>0.05);T1组生长猪粪便中乳酸菌/大肠杆菌与T3组无显著差异(P>0.05),显著高于其他各组(P<0.05)。结果提示,在生长猪饲粮中添加1×109CFU/kg植物乳杆菌GF103,能够改善生长猪肠道菌群环境,提高生长猪生长速度和饲料利用效率。

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