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Thirty-two Nili-Ravi buffaloes were used to determine the effect of prepartum immunopotentiation in late gestation with levamisole hydrochloride (0.5 mg/kg), vitamin E+selenium (vitE-Se) (Etosol-SE, 10 ml intramuscularly) or Bacille Calmette Guerin (BCG) (0.5 ml/animal, subcutaneously) on postpartum reproductive performance. The immunopotentiating treatment was given twice, with treatments one week apart, approximately 80 days prior to the expected date of parturition. Prepartum treatment with vitE-Se or BCG significantly (p<0.05) reduced the calving to first oestrus interval and the length of the postpartum service period compared to the control group. The uterine involution period was significantly shorter in buffaloes treated with vitE-Se compared to the control group. Levamisole hydrochloride apparently improved the reproductive performance, but this result was not statistically significant. 相似文献
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为研究重组鸡γ-干扰素(Chicken interferonγ,ChIFN-γ)对禽流感灭活疫苗的免疫增强效果,使用重组鸡γ-干扰素作为免疫佐剂,联合禽流感灭活疫苗采用胸部肌肉注射的方式免疫SPF雏鸡,免疫后每周测定血清抗体效价、免疫器官T、B淋巴细胞转化水平,攻毒后计算攻毒保护率。结果表明,鸡γ-干扰素提高了血清抗体水平,免疫器官T、B淋巴细胞转化水平和攻毒保护率,与疫苗组相比多数指标差异显著(P0.05)。鸡γ-干扰素对H5亚型禽流感灭活疫苗具有免疫增强作用。 相似文献
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重组鸡白细胞介素-6/2融合蛋白对新城疫(LaSota株)活疫苗免疫增强作用研究 总被引：2，自引：2，他引：0
为探究重组鸡白细胞介素-6/2融合蛋白(rChIL-6-Linker-ChIL-2,重组融合蛋白)对新城疫病毒(NDV)活疫苗(LaSota株)的免疫增强作用,本研究将90只SPF鸡随机分为6组,分别为PBS对照组、NDV弱毒苗对照组、rChIL-6-Linker-ChIL-2免疫增强组、rChIL-6蛋白免疫增强组、rChIL-2蛋白免疫增强组及rChIL-6+rChIL-2混合蛋白免疫增强组,将鸡白细胞介素重组融合蛋白水剂与LaSota株联合接种于SPF鸡,分别采用MTS法、流式细胞术、ELISA和HA/HI法检测接种前后不同时间各组鸡外周血及脾淋巴细胞增殖活性、鸡外周血中CD3+CD4+/CD3+CD8+T淋巴细胞的百分含量、血清中Th1/Th2型细胞因子表达水平及免疫抗体水平等指标。结果显示,接种后7～21d时,与NDV弱毒苗对照组相比,同时接种重组融合蛋白组鸡淋巴细胞增殖活性、外周血CD3+CD4+/CD3+CD8+T淋巴细胞的百分含量比值及血清中重组鸡IL-4蛋白(rChIL-4)、ChIL-6、ChIL-2、重组鸡IFN-α蛋白(ChIFN-α)、ChIFN-γTh1/Th2型细胞因子表达水平明显提升;HI免疫抗体较NDV弱毒苗对照组提高了1.0～1.9个滴度,较单一rChIL-6、rChIL-2对照组分别提高了0.2～0.7、0.2～1.1个抗体滴度。综上所述,rChIL-6-Lin-ker-ChIL-2融合蛋白对NDV(LaSota株)活疫苗在鸡体内具有明显的免疫增强效果。 相似文献
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