Prevalence and antimicrobial resistance of Salmonella isolates recovered from the meat of slaughtered animals in Nanoro (Burkina Faso)

Abstract

Salmonella is mainly distributed through food products of animal origin. Were collected and analyzed in Nanoro, 498 samples (200 liver samples, 200 cecal contents and 98 mesenteric lymph nodes). These samples were taken from 200 freshly slaughtered animals: goats, sheep, chickens, guinea fowl, pigs, donkeys. After grinding with a stomacher, the samples were pre-enriched with buffered peptone water, enriched with sodium selenite broth. Isolation of the organisms was done on selective media (SS, BGA and HECKTOËN). After 24 hours, the suspect colonies were identified based on their characters. Kirby Bauer’s disk diffusion method was used to study the susceptibility of isolates to antibiotics (ATB). Of the 200 slaughtered animals, 20 strains (10%) were isolated. The prevalence of Salmonella was 22.2% in pigs. According to the collection site, the cecal content was 7.0%. Serogrouping was characterized by 20.0% of cases for each of groups B, C1 and E. The strains isolated were sensitive to the antibiotics tested. One of them was resistant to ampicillin and trimethoprim-sulfamethoxazole. The presence of Salmonella in these animals indicates the need for a surveillance and monitoring program for Salmonella in Burkina Faso.