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首页> 外文期刊>Journal of wildlife diseases >AN ECOLOGIC STUDY COMPARING DISTRIBUTION OF PASTEURELLA TREHALOSI AND MANNHEIMIA HAEMOLYTICA BETWEEN SIERRA NEVADA BIGHORN SHEEP, WHITE MOUNTAIN BIGHORN SHEEP, AND DOMESTIC SHEEP
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AN ECOLOGIC STUDY COMPARING DISTRIBUTION OF PASTEURELLA TREHALOSI AND MANNHEIMIA HAEMOLYTICA BETWEEN SIERRA NEVADA BIGHORN SHEEP, WHITE MOUNTAIN BIGHORN SHEEP, AND DOMESTIC SHEEP

机译：塞拉内娃达比格霍恩羊，白山比格霍恩羊和家养羊之间的肉食性巴斯德氏菌和曼尼米亚溶血菌分布比较的生态研究

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摘要

The prevalence and phenotypic variability of Pasteurella and Mannheimia isolates from Sierra Nevada bighorn sheep (Ovis canadensis sierrae), White Mountain bighorn sheep (Ovis canadensis nelsoni), and domestic sheep (Ovis aries) from California, USA, were compared. The White Mountain bighorn sheep population had a recent history of pneumonia-associated mortality, whereas the Sierra Nevada bighorn sheep population had no recent history of pneumonia-associated mortality. The domestic sheep flocks were pastured in areas geographically near both populations but were not known to have direct contact with either bighorn sheep population. Oropharyngeal swab samples were collected from healthy domestic and bighorn sheep and cultured to characterize bacterial species, hemolysis, biogroups, and biovariants. Pasteurella trehalosi and Mannheimia haemolytica were detected in all of the study populations, but the relative proportion of each bacterial species differed among sheep populations. Pasteurella trehalosi was more common than M. haemolytica in the bighorn sheep populations, whereas the opposite was true in domestic sheep. Mannheimia haemolytica was separated into 11 biogroups, and P. trehalosi was characterized into two biogroups. Biogroup distributions for M. haemolytica and P. trehalosi differed among the three populations; however, no difference was detected for the distribution of P. trehalosi biogroups between the Sierra Nevada bighorn sheep and domestic sheep. The prevalence odds ratios (pOR) for the distribution of M. haemolytica biogroups suggested little difference between White Mountain bighorn sheep and domestic sheep compared with Sierra Nevada bighorn sheep and domestic sheep, although these comparisons had relatively large confidence intervals for the point estimates. Hemolytic activity of the isolates was not different among the sheep populations for M. haemolytica but was different for P. trehalosi. No clear evidence of association was found in the Pasteurellaceae distribution between the White Mountains bighorn sheep and domestic sheep.
机译：内华达山脉大角羊（ canadensis sierrae ），白山大角羊（）的巴斯德氏菌和 Mannheimia 分离株的患病率和表型变异比较了加拿大的Ovis canadensis nelsoni和来自美国加利福尼亚的家养绵羊（Ovis aries）。怀特山大角羊种群有近期与肺炎有关的死亡率史，而内华达山脉大角羊种群没有近期有与肺炎有关的死亡率史。家养羊群在地理上都靠近这两个种群的地区放牧，但不知道与大角羊种群有直接接触。从健康的家养绵羊和大角羊中收集口咽拭子样品，并进行培养以表征细菌种类，溶血作用，生物组和生物变异。在所有研究种群中均检出了海藻巴斯德氏菌和溶血曼海姆氏菌，但绵羊种群中每种细菌种类的相对比例却有所不同。 海藻巴斯德氏菌比 M更常见。大角羊种群中存在溶血性，而家养绵羊则相反。 溶血曼海姆氏菌被分为11个生物群和 P。海藻糖被分为两个生物群。 M的生物组分布。溶血性和 P。海藻糖在这三个人群中有所不同。但是，没有检测到i P的分布有差异。内华达山脉大角羊和家养绵羊之间的海藻生物群。 M分布的患病率比（pOR）。溶血性生物群表明，与内华达山脉大角羊和家养绵羊相比，白山大角羊和家养绵羊之间差异不大，尽管这些比较对于点估计具有相对较大的置信区间。羊群中分离株的溶血活性对iM无差异。 haemolytica ，但 P却不同。海藻糖。在白山大角羊和家养绵羊之间的巴斯德杆菌科分布中未发现明显的关联性。

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