阿尔及利亚北部肉鸡群中主要病毒性疾病(新城疫、传染性支气管炎和传染性法氏囊病)的血清学调查

Omar Salhi, D. Khelef, C. Messai, A. Lounas, A. Mohamed-Cherif, R. Kaidi, K. Ait-Oudhia
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引用次数: 2

摘要

采用ELISA法对阿尔及利亚肉鸡(30鸡/1200血清)新城疫(ND)、传染性支气管炎(IB)和传染性法氏囊病(IBD)的血清流行病学状况进行了调查,并对各疾病相关危险因素的影响进行了评价。在所有调查的鸡群中,新城疫以血清流行率最高(63.33%);然而,IB和IBD的血清学阳性较少(分别为40%和16.66%)。对于ND, Cobb 500鸡的血清阳性率显著高于其他菌株78% (p = 0.025)。然而,卫生状况良好的鸡群血清ND阳性率显著降低26% (p = 0.022)。对于IB,春季血清阳性的风险显著降低40% (p = 0.036)。密度越大和30日龄以上的鸡群血清阳性分别高出47% (p = 0.041)和45% (p = 0.019)。最后,未接种IBD疫苗时,肉鸡的血清阳性率高出48% (p = 0.047);特别是春季增加45% (p = 0.048);或者在卫生条件差的农场减少65% (p = 0.004);而30日龄以上的鸡血清阳性减少30% (p = 0.009)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Serological Survey of Dominant Viral Diseases (Newcastle Disease (ND), Infectious Bronchitis (IB) and Infectious Bursal Disease (IBD)), in Broilers Flocks in Northern Algeria
The present study was conducted to survey about sero-epidemiological status of Newcastle disease (ND), Infectious bronchitis (IB) and Infectious bursal disease (IBD) on Algerian broiler chicken (30 flocks/1200 sera) using ELISA method and to assess the influence of some risk factors related to each disease. Among all investigated flocks, ND was the most seroprevalent disease (63.33%); however, IB and IBD showed less serological positivity (40% and 16.66% respectively). For ND, Cobb 500 Flocks were significantly more seropositive by 78% (p = 0.025) than other strains. Nevertheless, flocks with good hygiene were significantly less seropositive to ND by 26% (p = 0.022). For IB, the risk of seropositivity was significantly lower in spring by 40% (p = 0.036). Although, flocks with higher density or with more than 30 days old were more seropositive respectively by 47% (p = 0.041) and 45% (p = 0.019). At last, when broiler chicken were not boosted by IBD vaccine, flocks appeared to be more seropositive by 48% (p = 0.047); especially in spring by 45% (p = 0.048); or in farms with poor hygiene by 65% (p = 0.004); however, more than flocks 30 days old flocks were less seropositive by 30% (p = 0.009).
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