title: Occurrence of Mycobacterium spp. and other pathogens in lymph nodes of slaughtered swine and wild boars (Sus scrofa).
abstract: Mycobacterium spp. and other pathogens were investigated in 258 swine lymph nodes (129 with and 129 without apparent lesions), and 120 lymph nodes (60 with and 60 without lesions) from wild boars (Sus scrofa). A total of lymph nodes from swine and wild boars were collected of different animals. Submaxillar and mesenteric lymph nodes were submitted to microbiological examination and colonies suggestive of Mycobacterium spp. (alcohol-acid bacilli) were submitted to PCR Restriction Assay (PRA). In swine with lymphadenitis, Mycobacterium spp. (24.1%) and Rhodococcus equi (13.2%) were the most prevalent microorganisms, while in lymph nodes without lesions were identified a complex of microorganisms, including of environmental mycobacteria. In wild boars with lymphadenitis, ß-haemolytic Streptococcus (10.0%), Mycobacterium spp (8.4%) and R. equi (6.6%) were the most frequent. Among mycobacterias were identified predominantly Mycobacterium avium subspecies type 1 (48.3%) and M. avium subspecies type 2 (16.1%), followed by Mycobacterium intracellulare, Mycobacterium szulgai,Mycobacterium fortuitum, Mycobacterium gordonae, Mycobacterium simiae, Mycobacterium nonchromogenicum and Mycobacterium intracellulare type 2.
authors.affiliation: São Paulo State University, UNESP, Infectious Diseases of Domestic Animals, Department of Veterinary Hygiene and Public Health, School of Veterinary Medicine and Animal Science, 18618-000, Botucatu, State of Sao Paulo, Brazil.
authors.forename: Gustavo Henrique Batista
authors.initials: GH
authors.lastname: Lara
authors.forename: Márcio Garcia
authors.initials: MG
authors.lastname: Ribeiro
authors.forename: Clarice Queico Fujimura
authors.initials: CQ
authors.lastname: Leite
authors.forename: Antonio Carlos
authors.initials: AC
authors.lastname: Paes
authors.forename: Alessandro
authors.initials: A
authors.lastname: Guazzelli
authors.forename: Aristeu Vieira
authors.initials: AV
authors.lastname: da Silva
authors.forename: Adolfo Carlos Barreto
authors.initials: AC
authors.lastname: Santos
authors.forename: Fernando José Paganini
authors.initials: FJ
authors.lastname: Listoni
mesh_terms: D000818:Animals; D016908:Gram-Positive Bacterial Infections / Q000382:microbiology / Q000662:veterinary*; D008198:Lymph Nodes / Q000382:microbiology*; D009161:Mycobacterium / Q000302:isolation & purification*; D016929:Rhodococcus equi / Q000302:isolation & purification*; D013291:Streptococcus / Q000302:isolation & purification*; D013552:Swine; D013553:Swine Diseases / Q000382:microbiology*