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猪源唾液乳杆菌对生长猪生长性能、粪中微生物数量及血清指标的影响

DOI: 10.3969/j.issn.1006-267x.2014.03.023

Keywords: 唾液乳杆菌,生长猪,生长性能,粪中微生物,血清指标

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Abstract:

本试验旨在探讨猪源唾液乳杆菌(L.salivarius)对生长猪生长性能、粪中微生物数量及血清指标的影响。选用平均体重为(35.22±0.86)kg的长×大二元杂交生长猪81头,随机分成3组,每组3个重复,每个重复9头。对照组饲喂基础饲粮,试验组分别饲喂在基础饲粮中添加0.2%、0.4%(每克饲粮活菌数分别为7.0×106和1.4×107CFU)的猪源L.salivarius冻干制剂。试验期为30d。结果表明:1)与对照组相比,试验组生长猪的平均日采食量(ADFI)和料重比(F/G)无显著变化(P>0.05),平均日增重(ADG)有升高趋势(P>0.05);2)饲粮中添加0.2%、0.4%的猪源L.salivarius能够显著增加生长猪粪中乳酸菌数量(P<0.05),显著降低大肠杆菌数量(P<0.05),并显著提高乳酸菌与大肠杆菌的比值(P<0.05);3)与对照组相比,试验组生长猪血清总胆固醇(TCHO)含量及谷丙转氨酶(ALT)、谷草转氨酶(AST)活性显著降低(P<0.05);4)试验组生长猪血清结合珠蛋白(Hp)含量均较对照组显著降低(P<0.05)。结果提示,饲粮中添加猪源L.salivarius能够改善生长猪肠道菌群环境和血清指标,提高机体免疫力,进而促进其健康生长。

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