Survey of antibody to chicken anemia agent by virus neutralization test

Ryoo, Gwang-seon; Koh, Hong-bum

Korean Journal of Veterinary Research 1993;33(2):227-234.

Gwang-seon Ryoo, Hong-bum Koh

College of Veterinary Medicine, Chonnam National University

Virus 중화시험법에 의한 닭 빈혈성인자의 항체조사

류광선, 고홍범

전남대학교 수의과대학

Abstract

A serological survey for antibody to chicken anemia agent(CAA) was carried out by virus neutralization test. Antibody to CAA was detected in broilers and layers at different age groups. The results obtained were summarized as follows ; 1. Of a total of 1,035 chicken sera from 1.16 flocks 617 samples of sera were detected as positive(59.6%) and 95 flocks of a total flocks as positive(81.9%). 2. Proportion of positive sera by age were 92.3 %(88.9~100%) at 1 to 2 weeks of age, 56.4%(16.7~77.8%) at 3 to 9 weeks of age, 85.0%(50.0~100%) at 10 to 14 weeks of age and all tested sera were positive at over the 15 weeks age. 3. In each broiler and layer chicken 63.6% and 68.4% chicks possessed positive sera respectively. 4. Neutralizing antibody titer in age group was various from 1:10 to 1:6,400 and mean titer was 1:400 to 1:800.

Key Words: chicken anemia agent, field chicken sera, virus neutralization test, broiler, layer