摘要
鸡新城疫是禽类的常发病,最理想的防治方法是疫苗免疫。肉用雏鸡母源NDV抗体可干扰疫苗的免疫效果,雏鸡在不同日龄接种疫苗后,血清抗体也会发生一定规律的变化。为获得良好的免疫效果,通过血凝抑制试验(HI)检测母源抗体效价消长规律为:在1～3日龄抗体维持在1:64～128的较高水平,后随时间的延长而逐渐降低,至24日龄抗体降至1:4以下,半衰期为4～5d。针对HI检测抗体效价<1:40的3日龄雏鸡,对常用的3种有效的免疫程序进行对比试验研究,结果发现第2组免疫效果更为理想。
Objective：Newcastle Disease （ND） is often taken in the birdsl the disease is serious and difficult to permanently cure, the most ideal preventing and controlling method is the vaccine immunity. Survey and evaluate NDV Antibody from layer serum, yolk and chicks was determined by Hemagglutination Inhibition test（HI） and ELISA in this study and research. The deamplification regularity of antibody was observed, the ND antibody titer was 1：64 - 128 for 1 - 3 days chicks, but it decreased gradually with time-lapse, the titer of 18 days chicks ND antibody decreased below 1：4. The half life was 4 5d. Three effective immune procedures were examination to 3 days chicks with antibody level 〈 t ：40. Discovered the 2nd group of immune procedure is more ideal.
出处
《吉林畜牧兽医》
2008年第12期4-5,共2页
Jilin Animal Husbandry and Veterinary Medicine
关键词
新城疫
母源抗体
半衰期
免疫程序
Newcasfle Disease
maternal antibody
half life
immune procedure
