Parasites, Hosts and Diseases
- 제36권2호
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- Pages.121-126
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- 1998
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- 2982-5164(pISSN)
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- 1738-0006(eISSN)
닭와포자충 감염이 닭의 뉴캣슬병 예방접종에 대한 면역억제 효과
Immunosuppressive effect of Cryptosporidium baileyi infection on vaccination against Newcastle disease in chicks
초록
닭와포자충 감염이 다른 병원체에 대한 닭의 체액성 면역에 미치는 영향을 규명하기 위한 연구의 일환으로 2일령 SPF 병아리에
Hemagglutination-inhibition titers (log2) to Newcastle disease (ND) vims were chronologically observed in chicks, which were orally inoculated with 5 × 105 oocysts of Cwptospori,drum bcileyi at 2 days of age and subsequently vaccinated with inactivated ND virus at 4 and 21 days postinoculation. In general, the titers were considerably lower in the infected chicks than those in the uninfected control throughout the experimental period (p < 0.01), and rapid negative seroronversions were observed in the infected chicks. The titers reached a peak on weeks 2 and 4 post-booster-vaccination in the control and infected chicks, respectively. Thus, C. bciLeWi infection was shown to have an immunosuppressive effect on ND vaccination when the agent was given to 2-day-old chicks. It is suggested that C. bniLeWi infection in chicks may increase the host susceptibility to ND virus.
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