Antibiotic residues in different chicken Carcass parts in Menufyia and Cairo governorates

Abstract

A grand total of 120 freshly slaughtered broiler chickens (50 each of breast and thigh and 5 each of thigh skin, breast skin, liver and kidney) were collected from dfferent small slaughter houses at both Menufiya and Cairo governorates for detection of the residual level of streptomycin, gentamicin, florfenicol, lincospectin and enrofloxacin. The detection and estimation of such antibiotics were applied by Micrbiological Inhibiotion Test & HPLC. The overall incidence of antibiotic residues positive samples resulted from microbiological inhibition test was 40% each of liver and kidney, it was also 40% for each of thigh skin and breast skin and 36% and 20% for thigh and breast from highest to the lowest incidence. The mean concentrations (mean value of positive samples only) of antibiotic residues at Menufiya governorate was higher than those in Cairo governorate. Using HPLC, the arrangement of mean concentration from the highest to the lowest at Menufiya governorate was streptomycin residues in examined samples by ppb were 1588.8± 488.92 for thigh and 1048.75± 290.46 for breast followed by the only lincospectin sample (259.4± 0 for thigh) then gentamycin (142.05±84.75 for thigh and 103.5±0 for breast) and after that florfenicol (26.34±7.52 for thigh and 11.24±3.06 for breast). Enrofloxacin failed to be detected in any of examined samples. At Cairo governorate, there wasn’t any lincospectin nor enrofloxacin residues in examined samples. The arrangement from the highest to the lowest will be streptomycin (1572±237 for thigh and 543±82 for breast), gentamicin (97.65±58.55 for thigh and 61.7±0 for breast), florfenicol (18.95±4.88 for thigh and 5.53±0.64 for breast), and finally lincospectin and enrofloxacin with zero value.