THE SEROLOGICAL RESPONSES OF CHICKENS TO MASS VACCINATION WITH A LIVE V4 NEWCASTLE-DISEASE VIRUS-VACCINE IN THE FIELD AND IN THE LABORATORY .1. MEAT CHICKENS

被引：13

作者：

BELL, IG

NICHOLLS, PJ

NORMAN, C

COOPER, K

CROSS, GM

机构：

[1] New South Wales Department of Agriculture and Fisheries, Elizabeth Macarthur Agricultural Institute, Menangle

来源：

AUSTRALIAN VETERINARY JOURNAL | 1991年 / 68卷 / 03期

关键词：

D O I：

10.1111/j.1751-0813.1991.tb00757.x

中图分类号：

S85 [动物医学（兽医学）];

学科分类号：

0906 ;

摘要：

Meat chickens on commercial broiler farms were vaccinated once at 1 to 15 days of age with a live V4 Newcastle disease virus (NDV) vaccine administered by drinking water, aerosol or coarse spray. Hatchmates were housed and similarly vaccinated in laboratory isolation pens. Samples of birds were bled at weekly to fornightly intervals and the serums tested for haemagglutination inhibiting antibody to NDV. Log2 mean titres of up to 6.26, and assumed protection levels (based on the percentage of birds with log2 titres of 4 or greater) of up to 89%, were obtained in field trials within 4 weeks of vaccination. Difference were observed between the results obtained from parallel field and laboratory trials. The presence of maternal NDV antibody reduced the response to vaccination. The results show that this V4 vaccine can produce an adequate serological response following mass administration to Australian meat chickens housed under commercial conditions.

引用

页码：85 / 89

页数：5

共 23 条

[1]

AINI I, 1986, 5TH P INT C LIV PROD, P127

[2]

Albiston H. E., 1942, AUSTRALIAN VET JOUR, V18, P75, DOI 10.1111/j.1751-0813.1942.tb01466.x

[3] PROTECTION OF CHICKENS AGAINST CHALLENGE WITH THE VARIANT VIRUS RESPONSIBLE FOR NEWCASTLE-DISEASE IN 1984 BY CONVENTIONAL VACCINATION [J].