农凤鸡新城疫与禽流感母源抗体的衰减规律研究
2017-07-13俞宁杨琼周大薇
俞宁 杨琼 周大薇

摘要[目的]研究农凤鸡新城疫和禽流感母源抗体的衰减规律,为农凤鸡新城疫(ND)和禽流感(AI)的预防提供依据。[方法]通过血凝抑制(HI)试验对1~37日龄的农凤鸡进行新城疫和禽流感(H5和H9)母源抗体水平的检测,研究农凤雏鸡ND和AI母源抗体的衰减规律。[结果] AI H5母源抗体水平较低,AI H9和ND的母源抗体水平相对较高,但都在3~5日龄出现高峰,此后随着日龄的增长,抗体水平逐渐下降。[结论] 农凤鸡AI H5的首免日龄推荐为5~8日龄,AI H9和ND的首免日龄推荐为7~12日龄。
关键词 新城疫;禽流感;母源抗体;农凤鸡
中图分类号 S858.31 文献标识码 A 文章编号 0517-6611(2017)02-0129-02
Abstract[Objective] To study the decay laws of newcastle disease(ND) and avian influenza(AI) in Xinfeng Chicken and provide basis for the prevention of newcastle disease(ND) and avian influenza(AI) in Xinfeng Chicken.[Method] The maternal antibody levels of newcastle disease(ND) and avian influenza(AI H5 and H9)in 1-37 dayold Xinfeng Chichen were detected by using hemagglutination inhibition(HI) test to study the decay laws of newcastle disease(ND) and avian influenza(AI)maternal antibodies in Xinfeng Chicken.[Result] H5 maternal antibody level of AI was lower. The maternal antibody level of AI H9 and ND was relatively higher, and they reached the maximum values in 3-5 dayold Xinfeng Chichen, and they gradually decreased with the dayold.[Conclusion] The first immunization age of AI H5 in Xinfeng Chicken was 5-8 dayold, and the first immunization age of AI H9 and ND was 7-12 dayold.
Key words Newcastle disease(ND); Avian influenza(AI); Maternal antibody; Xinfeng Chicken
農凤鸡是成都农业科技职业学院以矮小型品系(即宫廷凤凰鸡,带凤头)为母本,与正常型青胫麻羽公鸡杂交,培育出带凤头性状的矮小型青胫麻羽鸡,作为优质鸡母系。该品系个体矮小、矮脚、短颈、凤头、青胫、青喙、白肤、黑麻羽、尾羽高翘及胸肌和腿肌较发达,肉质佳,肉味极鲜,具有广阔的发展前景。
鸡新城疫(ND)和禽流感(AI)均是严重危害养禽业生产的重要疫病,其暴发将会给养禽业造成巨大的经济损失,疫苗免疫被认为是当前预防和控制这2种疫病的主要手段。母源抗体与免疫程序的合理制订直接相关,特别是确定不同疫苗的首免日龄时是重点考虑的因素[1-2]。为了更好地进行ND和AI的防控,笔者通过对四川农凤鸡新城疫、禽流感母源抗体水平及其衰减情况进行检测,旨在为该品种鸡制订科学合理的免疫程序提供科学依据。
1 材料与方法……p>
