Korean Journal of Veterinary Service (한국가축위생학회지)
- Volume 24 Issue 3
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- Pages.217-222
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- 2001
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- 1225-6552(pISSN)
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- 2287-7630(eISSN)
A survey of newcastle disease virus antibody titers on slaughtered broiler chicks
도축 육계에서 뉴캣슬형 바이러스에 대한 혈중항체가 조사
Abstract
Hemagglutination inhibition(HI) titers of Newcastle disease(ND) were measured to investigate the vaccination times on three different species of broiler chicks in Chonbuk province. Each 330 of Cobb, Ross and White-semi broiler chicks were selected from 11 broiler farms. The primary vaccine were sprayed in hatchery at one day old chicks. Secondary and tertiary vaccine were used by drinking water at 7 to 24 days old chicks. The ND antibody titer were measured by HI from each different species of broiler chicks at the marketing date. Total average HI titers of Cobbs vaccinated with primary ones, secondary and tertiary ones were recorded 1.86, 1.52 and 2.76, respectively. The antibody titers were shown to 2.22, 2.13, 3.07 in terms of vaccination of Ross broiler chicks. They were also 2.56, 2.65 and 2.78 in terms of vaccination of White-semi broiler chicks. The value HI titer were not statistically different of all treatments. The results of this experiment suggested that HI titer of sera is scored less than defensive value of ND antibody titer at more than two times of vaccination.