Impact of Mbeubeuss landfill on the microbiological and chemical quality of broiler chickens produced in Malika, Senegal

A study on the impact of the Mbeubeuss landfill on the microbiological and chemical quality of broiler chicken carcasses produced in the commune of Malika has been carried out in Dakar. It involved a sample of 100 chickens collected from nearby farms. Research on the various contaminants was conducted in accordance with standard methods. The results show that on the microbiological quality of samples, 98% of carcasses are contaminated by aerobic microorganisms at 30°C (54% at a distance of less than 1 km and 44% at a distance of more than 1 km from the Mbeubeuss landfill); 93% by Escherichia coli (53 and 40%); 25% by Staphylococcus aureus (18 and 7%); 94% by Clostridium perfringens (54 and 40%); and 7% by Salmonella species (2 and 5%). Regarding microbiological standards, 89 of the 100 chicken carcass samples studied are satisfactory. The 11 unsatisfactory carcasses include 3 with excess E. coli (3 at a distance of less than 1 km), 1 with excess S. aureus (at a distance of less than 1 km), and 7 with Salmonella spp. (2 at a distance of less than 1 km and 5 at a distance of more than 1 km). As for the chemical quality of the chickens, 68% of carcasses are contaminated with mercury (40% at a distance of less than 1 km and 28% at a distance of more than 1 km); there is 0% contamination with lead and 0% contamination with cadmium. 20% of the carcasses are deemed unsatisfactory due to mercury contamination. When considering the quality of drinking water in relation to the variation in microbiological and chemical quality of broiler chickens, all the samples deemed unsatisfactory come from farms where the well is the source of drinking water for the birds. Key words: Broiler chicken, well water, chemical and microbiology quality, Mbeubeuss landfill, Senegal.