Arcangioli Marie-Anne, Duet Arnaud, Meyer Gilles, Dernburg Ann, Bézille Pierre, Poumarat François, Le Grand Dominique
Unité Mixte de Recherche Mycoplasmoses des Ruminants, Ecole Vétérinaire de Lyon, 1 avenue Bourgelat, 69280 Marcy l'Etoile, France.
Vet J. 2008 Jul;177(1):89-93. doi: 10.1016/j.tvjl.2007.03.008. Epub 2007 May 9.
To assess the prevalence and relative importance of Mycoplasma bovis among the pathological agents implicated in bovine respiratory disease (BRD), we surveyed 135 veal calves from nine feedlots in eastern France during naturally occurring outbreaks of respiratory disease. Occurrence of respiratory pathogens, M. bovis, bovine viral diarrhoea (BVD) virus, bovine respiratory syncytial (BRS) virus and parainfluenza-3 (PI3) virus was investigated by seroconversion and isolation of bacteria and viruses from broncho-alveolar fluids. M. bovis and pathogenic respiratory bacteria were isolated in eight of the nine feedlots, and from 106 and 32, respectively, of the 135 tested animals. Seroconversion to PI3 virus occurred in four lots. BVD and BRS viruses were detected in eight and one lot, respectively. M. bovis was the most frequently isolated aetiologic agent in these BRD outbreaks, spreading early and widely throughout the affected units (60-100% rate of isolation and seroconversion). These results stress the importance of M. bovis in the BRD complex.
为评估牛支原体在牛呼吸道疾病（BRD）相关病原体中的流行情况及相对重要性，我们在法国东部9个饲养场的135头犊牛发生自然呼吸道疾病暴发期间进行了调查。通过血清转化以及从支气管肺泡液中分离细菌和病毒，对呼吸道病原体、牛支原体、牛病毒性腹泻（BVD）病毒、牛呼吸道合胞体（BRS）病毒和副流感3型（PI3）病毒的发生情况进行了调查。在9个饲养场中的8个饲养场分离出了牛支原体和致病性呼吸道细菌，在135头受试动物中，分别有106头和32头分离出了牛支原体和致病性呼吸道细菌。有4个饲养场出现了针对PI3病毒的血清转化。分别在8个和1个饲养场检测到了BVD和BRS病毒。在这些BRD疫情中，牛支原体是最常分离出的病原体，在受影响的单位中早期广泛传播（分离率和血清转化率为60 - 100%）。这些结果强调了牛支原体在BRD综合征中的重要性。
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