Monitoring and incidence of presence of Salmonella spp. Bacteria in some live bird markets

Abstract

The proposed research aimed to establish the incidence of Salmonella spp. bacteria in flocks of birds of different ages, sold in the poultry market in Chisinau, coming from different districts of the republic. As research material served: the samples taken from the birds’ transportation units to the market, from the cells for the maintenance of birds, from the floor, the market inside walls and the fecal matter from birds of different species and ages. For the isolation and identification of bacteria from the genus Salmonella spp. were used the culture media such as Bismuth sulfite agar, Salmonella Sighella Agar, Brilliance Salmonella Agar. For the serological identification were used the polyvalent serums (O and H). The results obtained demonstrate that the bacteriological indices in young chickens compared to adult birds differ significantly, presenting values of 3 to 5 times higher. This fact proves that adult birds kept temporarily in the same market territory with young chickens present a major risk of direct contamination with different bacterial forms, increasing the risk for bacteria of the genus Salmonells. spp. The results of the bacteriological research of samples taken from different age categories of birds confirmed that the indices of bacteria from the genus Salmonella spp. had values of 0.58±0.13 24 log CFU/g in chickens with age 0-2 days, increasing up to 1.48±0.09 log UFC/g (p>0.001) in chickens with age 50-60 days, and in adult birds this index was 3.42±0.19 log UFC/g (p >0.001), having a difference of 5 times higher compared to small chickens, a fact that demonstrates the epidemiological importance of salmonella for poultry flocks and the risks of cross-contamination of birds kept temporarily in the same market territory.