Surveillance of bovine tuberculosis (bTB) lesions in animals at slaughterhouses is useful for controlling and eradicating the disease, besides providing epidemiological information. This study aimed to identify risk factors for bovine tuberculosis (bTB) condemnation in cattle at slaughterhouses in Rio Grande do Sul, Brazil. A logistic regression analysis was conducted using data on bTB-related condemnations. Variables examined included animal origin, number of slaughtered animals, season, inspection level (state or municipality), animal sex, and slaughterhouse location. A total of 297,817 Animal Transport Guides were evaluated, representing the transportation of 3497,521 animals. Among these, 6097 (2.05%) had at least one animal condemned due to bTB lesions. Risk factors for condemnation included larger batch sizes, female animals, slaughterhouses, and animal origin. The higher condemnation frequency in females and regions with dairy farms suggests links to milk production. Variation in condemnation rates by inspection level and slaughterhouse highlights the need for standardized procedures in identifying bTB lesions. Identifying these risk factors enables targeted interventions to enhance disease control and eradication efforts.

中文翻译：

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巴西南里奥格兰德州因结核病严重病变而谴责牛尸体：相关风险因素

除了提供流行病学信息外，对屠宰场动物的牛结核病 (bTB) 病变进行监测对于控制和根除该疾病也很有用。本研究旨在确定巴西南里奥格兰德州屠宰场牛患牛结核病 (bTB) 的危险因素。使用与 bTB 相关的谴责数据进行逻辑回归分析。检查的变量包括动物来源、屠宰动物数量、季节、检查级别（州或市）、动物性别和屠宰场位置。总共评估了 297,817 份动物运输指南，代表运输了 3497,521 只动物。其中，6097 只（2.05%）至少有一只动物因 bTB 病变而被报废。被谴责的风险因素包括较大批量、雌性动物、屠宰场和动物来源。女性和有奶牛场的地区谴责频率较高，表明与牛奶产量有关。不同检验水平和屠宰场的报废率存在差异，这凸显了识别 bTB 病变的标准化程序的必要性。识别这些风险因素可以采取有针对性的干预措施，以加强疾病控制和根除工作。