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Seroprevalence of and risk factors for Mycoplasma mycoides subspecies capri infection in small ruminants in Northern Jordan

机译:约旦北部小反刍动物中支原体亚种卡普里感染的血清流行率和危险因素

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摘要

During the period from January 2002 to December 2003, serum samples were collected from 104 small ruminant flocks consisting of 18 sheep flocks, 27 goat flocks, and 59 mixed flocks containing both sheep and goats in northern Jordan. Only female sheep and goats were sampled. At least five females aged over 2 years per flock per species were sampled and examined for Mycoplasma mycoides subspecies capri using the latex agglutination test. To increase the chances of detecting positive flocks, sick or older ewes were sampled. Specific information was obtained using a questionnaire to identify potential risk factors for M. mycoides subsp. capri seropositivity in small ruminants. The true flock-level seroprevalences of M. mycoides subsp. capri were 34%, 32%, and 38% in small ruminants (sheep and goats), sheep, and goats, respectively. Differences between flock-level seroprevalences in sheep and goats were not significant (p = 0.7). Multivariable logistic regression analysis of 21 production and health management practices showed four to be associated with M. mycoides subsp. capri seropositivity including flocks which were grazed and fed concentrate supplement (OR = 4.6), improper cleaning of milking utensils (OR = 4.7), buying new animals to replace culled ones (OR = 0.3), and treating against helminths when clinical signs of helminth infections appear (OR = 0.4).
机译:在2002年1月至2003年12月期间,从约旦北部的104只小反刍羊群中收集了血清样本,这些羊群包括18只绵羊羊群,27只山羊羊群和59只包含绵羊和山羊的混合羊群。仅采样雌性绵羊和山羊。对每个物种每群至少5名年龄超过2岁的雌性进行采样,并使用乳胶凝集试验检查其支原体支原体亚种。为了增加发现阳性鸡群的机会,对有病或较老的母羊进行了采样。使用问卷调查获得了特定信息,以鉴定蕈状支原体亚种的潜在危险因素。小反刍动物的卡普里血清阳性。霉菌分支杆菌亚群的真正鸡群血清阳性。小反刍动物(绵羊和山羊),绵羊和山羊的capri分别为34%,32%和38%。绵羊和山羊的鸡群血清阳性率之间的差异不显着(p = 0.7)。对21种生产和健康管理实践的多变量logistic回归分析显示,有4种与蕈状支原体亚种相关。卡普里岛血清阳性,包括放牧并补充浓缩饲料的鸡群(OR = 4.6),不当清洗挤奶用具(OR = 4.7),购买新动物代替淘汰的动物(OR = 0.3)以及在有蠕虫的临床症状时治疗蠕虫出现感染(OR = 0.4)。

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