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本试验以2株乳酸菌(LJ2和LZ1)按不同剂量分别对小鼠连续灌服30 d,在10、20、30 d检测各组小鼠血清中IgG和IgA的含量。结果表明,灌服不同剂量的LJ2和LZ1菌液均能提高小鼠血清中IgG、IgA含量,且随灌服时间的不断增加,低、中剂量组有超过高剂量组的趋势。整体上看,灌服LZ1菌液对提高血清中IgG、IgA含量的效果优于LJ2菌液,其中LZ1的低剂量组对于提高机体免疫力效果最好,中、高剂量组次之,最后是低剂量LJ2。 相似文献
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<正>犬瘟热是由犬瘟热病毒(Canine distemper virus,CDV)感染引起的急性、高度接触性传染性疾病,其分布范围广,传染性强,死亡率高,是影响犬类健康的重要传染病之一。本文从该病的流行病学特点、与相似疾病的鉴别性诊断以及治疗等方面进行了归纳总结,以期为有效防治犬瘟热疾病提供更多方法及思路。一、病原犬瘟热病毒(CDV)属副黏病毒科,麻疹病毒属的成员之一,是一种单链RNA病毒。病毒粒子有球形、长丝状以及畸形病毒粒子,病毒粒子有囊膜,其中以球形病毒粒子占比最多,其直径在120~350 nm之间。 相似文献
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不同来源乳酸菌的分离与鉴定 总被引:2,自引:2,他引:0
Six strains of Lactobacillus were isolated from traditional indigenous dairy products, piglet’s feces and chicken intestine, designated as LS, LT, LJ1, LJ2, LZ1 and LZ2, respectively. Identifications were done according to bacteria morphology, physiological and biochemical properties,16S rDNA sequence homology analysis, and their characteristics were researched. The results showed that LS, LT, LJ1 and LZ2 strains were Lactobacillus brevis, LJ2 strain was Enterococcus faecium, LZ1 strain was Lactobacillus acidophilus. All of the six strains had obvious bacteriostasis effect on Listeria monocytogenes, Salmonella typhimurium, Escherichia coli and Staphylococcus aureus. 相似文献
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