Oil emulsion inactivated vaccine was prepared by susceptible embryos, with different strains of AEV. Four groups of normal chickens of 2 - 7 days of age were given injections for immunization, respectively. Another gr...Oil emulsion inactivated vaccine was prepared by susceptible embryos, with different strains of AEV. Four groups of normal chickens of 2 - 7 days of age were given injections for immunization, respectively. Another group was used as control. This study was expected to evaluate the immunological effect and discuss the immunological mechanism by means of five different experiments, i.e. the agar-gel precipitin test, the isolation of lymphokine, the isolation, purification and analysis of blood serum IgG, embryo-susceptibility test, and clinical and pathological examination. The results of these experiments indicated that oil emulsion inactivated vaccine is safe and effective. The chickens were normal when inoculated with AE strong virus after immunity at 4 and 37 weeks. Immunological mechanism is that the humoral immunity played an important role and celluar immunity exists, but it is not important in the process of the resistance to AEV.展开更多
用NDV La Sota株、IBV M41株、EDS76 V HSH23株、AEV Van Roekel株为种毒,分别接种鸡胚或鸭胚,制备各种病毒抗原液,经福尔马林灭活后,采用FILTRON盒式超滤系统对制苗病毒抗原液进行浓缩,然后按一定比例混合,以司本80及吐温80为乳化剂,1...用NDV La Sota株、IBV M41株、EDS76 V HSH23株、AEV Van Roekel株为种毒,分别接种鸡胚或鸭胚,制备各种病毒抗原液,经福尔马林灭活后,采用FILTRON盒式超滤系统对制苗病毒抗原液进行浓缩,然后按一定比例混合,以司本80及吐温80为乳化剂,10号白油为佐剂,制成ND-IB-EDS76-AE四联灭活疫苗。对四联苗各项技术指标进行了测定,证明本疫苗安全、无任何副作用;免疫10-14 d后产生免疫力;ND部分效检,攻毒100％保护,每羽份含ND效价达50-123 PD50;IB部分效检,免疫21-28 d后攻毒保护率达80％-100％,IB HI效价≥1:64;EDS76效检,免疫后21 d HI效价≥1:128;AE效检,保护率达80％-100％。展开更多
[目的]探讨不同批次的鸡源及胚源毒种致病性，为有效控制禽脑髓炎（AE）的发生提供参考。[方法]将AEV Van Roekel（VR）株毒种用雏鸡及鸡胚进行繁殖与传代，制备了不同批次的鸡源及胚源毒种，将这些毒种以不同接毒剂量经脑内接种8～10...[目的]探讨不同批次的鸡源及胚源毒种致病性，为有效控制禽脑髓炎（AE）的发生提供参考。[方法]将AEV Van Roekel（VR）株毒种用雏鸡及鸡胚进行繁殖与传代，制备了不同批次的鸡源及胚源毒种，将这些毒种以不同接毒剂量经脑内接种8～10周龄的SPF鸡，进行致病性试验。[结果]不同批次的鸡源毒种致病性均很强，接种后可引起SPF鸡出现严重的禽脑脊髓炎症，不同批次的胚源毒种致病性存在明显差异，有强有弱。[结论]P080603和170807012个批次胚源毒种可以用作AE攻毒效检毒种。展开更多
文摘Oil emulsion inactivated vaccine was prepared by susceptible embryos, with different strains of AEV. Four groups of normal chickens of 2 - 7 days of age were given injections for immunization, respectively. Another group was used as control. This study was expected to evaluate the immunological effect and discuss the immunological mechanism by means of five different experiments, i.e. the agar-gel precipitin test, the isolation of lymphokine, the isolation, purification and analysis of blood serum IgG, embryo-susceptibility test, and clinical and pathological examination. The results of these experiments indicated that oil emulsion inactivated vaccine is safe and effective. The chickens were normal when inoculated with AE strong virus after immunity at 4 and 37 weeks. Immunological mechanism is that the humoral immunity played an important role and celluar immunity exists, but it is not important in the process of the resistance to AEV.
文摘用NDV La Sota株、IBV M41株、EDS76 V HSH23株、AEV Van Roekel株为种毒,分别接种鸡胚或鸭胚,制备各种病毒抗原液,经福尔马林灭活后,采用FILTRON盒式超滤系统对制苗病毒抗原液进行浓缩,然后按一定比例混合,以司本80及吐温80为乳化剂,10号白油为佐剂,制成ND-IB-EDS76-AE四联灭活疫苗。对四联苗各项技术指标进行了测定,证明本疫苗安全、无任何副作用;免疫10-14 d后产生免疫力;ND部分效检,攻毒100％保护,每羽份含ND效价达50-123 PD50;IB部分效检,免疫21-28 d后攻毒保护率达80％-100％,IB HI效价≥1:64;EDS76效检,免疫后21 d HI效价≥1:128;AE效检,保护率达80％-100％。
文摘[目的]探讨不同批次的鸡源及胚源毒种致病性，为有效控制禽脑髓炎（AE）的发生提供参考。[方法]将AEV Van Roekel（VR）株毒种用雏鸡及鸡胚进行繁殖与传代，制备了不同批次的鸡源及胚源毒种，将这些毒种以不同接毒剂量经脑内接种8～10周龄的SPF鸡，进行致病性试验。[结果]不同批次的鸡源毒种致病性均很强，接种后可引起SPF鸡出现严重的禽脑脊髓炎症，不同批次的胚源毒种致病性存在明显差异，有强有弱。[结论]P080603和170807012个批次胚源毒种可以用作AE攻毒效检毒种。
