摘要
将１１４只１１日龄海赛克斯褐公鸡随机分成５组：Ⅰ组为空白对照，Ⅱ组用新城疫（ＮＤ）弱毒苗和ＮＤ油佐剂灭活苗同时免疫，Ⅲ组用传染性法氏囊病（ＩＢＤ）地方毒株油佐剂灭活苗免疫，Ⅳ组用ＮＤ弱毒苗、ＮＤ油佐剂灭活苗、ＩＢＤ地方毒株油佐剂灭活苗同时免疫，Ⅴ组在Ⅳ组的基础上增加ＩＢＤ弱毒苗免疫。５组鸡分别隔离饲养，定期测定血清ＮＤＨＩ效价与ＩＢＤ琼扩效价。选择时机用强毒攻击，观察各组鸡的保护情况。结果：（１）Ⅱ、Ⅳ、Ⅴ组鸡均能很好地抵抗ＮＤＶ强毒的攻击，Ⅲ、Ⅳ、Ⅴ组鸡无论对ＩＢＤＶ人工感染，还是自然感染，均有坚强的保护力；（２）ＩＢＤ地方毒株油佐剂灭活疫苗不干扰ＮＤ疫苗的免疫应答；（３）ＩＢＤ弱毒苗对ＮＤ疫苗的免疫应答有一定影响，在免疫初期能促进机体尽快对ＮＤ疫苗产生应答，但后期ＮＤ疫苗的ＨＩ抗体降低较快；（４）ＮＤ疫苗对ＩＢＤ疫苗的免疫效果无显著影响。作者提出，对雏鸡首免（无论有、无母源抗体）可采用ＮＤ弱毒苗＋ＮＤ油佐剂灭活苗＋ＩＢＤ（地方毒株）油佐剂灭活苗同时进行免疫，至少可以保护到上笼后或开产前免受ＮＤＶ和ＩＢＤＶ的感染，既简化了免疫程序，又可减少对鸡群的应激，值得推广应用。
Five groups of11days old chicken were innoculated with different vaccines,respec tively.GroupⅠdid not treat as control,groupⅡwas innoculated with ND attenuated vaccine (AV)and ND oil emulsion inactivated vaccine(OEV),groupⅢwith IBD field strain OEV,groupⅣwere treated as groupⅡ+groupⅢ,groupⅤwere as groupⅣ+IBD AV.After innoculation,the ND HI and IBD AGP antibody titers in serum of the5groups chickens were tested periodically.All the chickens were challenged eventually with virulent NDV and IBDV.The results indicated that the immunization procedure that is'ND AV+ND OEV+IBD OEV(field strain)'could be used in chick ens for the first immunization innoculation.It could protect the chickens avoiding infection of NDV and IBDV after encompassing in coop or before laying eggs.
出处
《中国兽医学报》
CAS
CSCD
北大核心
1997年第2期123-125,共3页
Chinese Journal of Veterinary Science
基金
杨陵农业科技开发基金
关键词
鸡
新城疫
传染性氏囊病
疫苗
免疫
chicken
Newcastle disease
infectious bursal disease
vaccine
immunization
