Collantes-Fernández Esther, Moreno-Gonzalo Javier, Sánchez-Sánchez Roberto, García-Bocanegra Ignacio, Horcajo Pilar, Ortega-Mora Luis M
SALUVET, Animal Health Department, Faculty of Veterinary Sciences, Complutense University of Madrid, Ciudad Universitaria s/n, 28040, Madrid, Spain.
SALUVET, Animal Health Department, Faculty of Veterinary Sciences, Complutense University of Madrid, Ciudad Universitaria s/n, 28040, Madrid, Spain.
Theriogenology. 2019 Apr 1;128:116-121. doi: 10.1016/j.theriogenology.2019.01.030. Epub 2019 Feb 2.
Bovine trichomonosis is a sexually transmitted disease considered as an important cause of early reproductive failure in beef cattle. To investigate the occurrence of the infection in different Spanish beef cattle-producing areas, retrospective data from the SALUVET veterinary diagnostic laboratory (Veterinary Faculty, Madrid, Spain) derived from the analysis of samples from beef bulls that were routinely tested for Tritrichomonas foetus infection, were compiled from 2011 to 2015. In addition, a number of potential risk factors were assessed. T. foetus was detected in 12.7% (385/3016; 95% CI: 11.5%-13.9%) of samples from bulls and in 20.7% (195/941; 95% CI: 18.1%-23.3%) of the herds tested. "Bull age" and "reproductive disorders in the herd" were the risk factors identified in the multivariable analysis. Bulls older than 3 years (19.7%) were more likely to be infected than young bulls (8.2%) and T. foetus was more often detected in herds with reproductive problems (27.9%) than in those without reproductive disorders (9.4%). The prevalence in bulls originating in mountain systems (13.9%, 267/1922) was significantly higher than that in "dehesa" (Mediterranean holm-oak pasture) areas (10.8%; 118/1094) (P ˂ 0.05), which might be attributable to the use of communal pastures and specific management practices in mountain systems. The results reported here indicate that T. foetus infection is substantially spread among beef cattle herds, suggesting that BT could be having a significant negative impact on the reproduction and productivity of Spanish beef herds managed under extensive conditions.
牛毛滴虫病是一种性传播疾病，被认为是肉牛早期繁殖失败的重要原因。为了调查西班牙不同肉牛产区的感染情况，收集了2011年至2015年期间SALUVET兽医诊断实验室（西班牙马德里兽医学院）的回顾性数据，这些数据来自对定期检测胎儿三毛滴虫感染的种公牛样本的分析。此外，还评估了一些潜在的风险因素。在种公牛样本中，12.7%（385/3016；95%置信区间：11.5%-13.9%）检测到胎儿三毛滴虫，在检测的牛群中，20.7%（195/941；95%置信区间：18.1%-23.3%）检测到该病原体。多变量分析确定“公牛年龄”和“牛群中的繁殖障碍”为风险因素。3岁以上的公牛（19.7%）比年轻公牛（8.2%）更易感染，胎儿三毛滴虫在有繁殖问题的牛群中（27.9%）比在无繁殖障碍的牛群中（9.4%）更常被检测到。来自山区的种公牛患病率（13.9%，267/1922）显著高于“德埃萨”（地中海圣栎牧场）地区（10.8%；118/1094）（P＜0.05），这可能归因于山区使用公共牧场和特定的管理方式。此处报告的结果表明，胎儿三毛滴虫感染在肉牛群中广泛传播，这表明牛毛滴虫病可能对西班牙粗放管理条件下的肉牛群繁殖和生产力产生重大负面影响。
