Incidência de linfadenite granulomatosa suína no ano de 2023 em frigorífico localizado no Triângulo Mineiro, Minas Gerais

Despite the increase in pig production in Brazil, challenges such as the spread of diseases in pig populations and public health concerns, e.g. the transmission of viruses and bacteria, require constant vigilance during the slaughter of these animals. In this context, granulomatous lymphadenitis (GL) in pigs is a subclinical disease caused mainly by non-tuberculous mycobacteria, with Mycobacterium avium hominissuis being the most prevalent in pigs and humans. The detection of infected animals occurs during slaughter, resulting in losses due to the disposal of viscera and carcasses. This study aimed to report the incidence of GL in a slaughterhouse located in the city of Uberlândia, Minas Gerais (Brazil), during the year 2023. More than one million slaughtered animals were evaluated, more than 100 thousand of which showed non-compliance, resulting in 596 cases of GL identified. The data suggest a low incidence of GL in the Triângulo Mineiro region, attributed to advances in disinfection practices and widespread knowledge about the disease. Furthermore, a seasonal pattern was observed in the occurrence of GL, with higher incidences in the coldest months of the year. Factors such as lack of hygiene in facilities, inadequate food supply and the presence of birds can contribute to the spread of the disease. It is concluded that despite the low occurrence in the studied region, GL continues to be a concern due to its economic impact and the need for constant surveillance and improvements in management and hygiene practices.