Vilela Vinícius Longo Ribeiro, Lima Neto Basílio Felizardo, Silva Filho Geraldo Moreira, Souza Flaviane Teles, Lima Ana Patrícia Gomes, Alvares Felipe Boniedj Ventura, Barbosa Fernanda Pereira Silva, Melo Renata Pimentel Bandeira, Mota Rinaldo Aparecido, Feitosa Thais Ferreira
Department of Veterinary Medicine, Federal Institute of Paraíba, Sousa, State of Paraíba, Brazil.
Postgraduate Program in Science and Animal Health, Federal University of Campina Grande, Patos, State of Paraíba, Brazil.
Trop Anim Health Prod. 2025 Apr 26;57(4):192. doi: 10.1007/s11250-025-04453-0.
The objective was to describe the first occurrence of bovine genital trichomoniasis in a herd in the semi-arid region of Brazil. On a cattle farm located in the municipality of Coremas, Paraíba, in northeastern Brazil, there was an outbreak of reproductive problems characterized by repeated estrus, abortion, and hypocalcemia. The herd, composed of 22 cows and one Holstein bull, was raised under a semi-intensive system with natural mating. The introduction of nine heifers from the Zona da Mata region of Pernambuco, six months before the outbreak, was identified as the likely source of infection. Vaginal fluid from all cows and preputial washings from the bull were analyzed by PCR, confirming infection by Tritrichomonas foetus with an infection rate of 30.4% (7/23) on the farm, including six cows and the bull testing positive. Among the six positive females, four were part of the group of animals acquired from another state. Five PCR-positive samples were sequenced, showing 99.1% to 100% similarity with T. foetus. This study reports the first occurrence of T. foetus in the semi-arid region of Brazil, highlighting its reproductive impact and the importance of biosafety measures to prevent its spread in the region.
目的是描述巴西半干旱地区一个牛群中首次出现牛生殖道毛滴虫病的情况。在巴西东北部帕拉伊巴州科雷马斯市的一个养牛场，爆发了以反复发情、流产和低钙血症为特征的繁殖问题。该牛群由22头母牛和1头荷斯坦公牛组成，采用半集约化养殖系统并进行自然交配。疫情爆发前六个月从伯南布哥州马塔地区引入的九头小母牛被确定为可能的感染源。通过聚合酶链反应（PCR）分析了所有母牛的阴道分泌物和公牛的包皮冲洗液，证实感染了胎儿三毛滴虫，该养殖场的感染率为30.4%（7/23），包括六头母牛和公牛检测呈阳性。在六头阳性母牛中，四头属于从另一个州购入的动物群体。对五个PCR阳性样本进行了测序，显示与胎儿三毛滴虫的相似度为99.1%至100%。本研究报告了巴西半干旱地区首次出现胎儿三毛滴虫，强调了其对繁殖的影响以及生物安全措施对防止其在该地区传播的重要性。
