tailieunhanh - Báo cáo khoa học: "Tetracycline residue levels in cattle meat from Nairobi salughter house in Kenya"

Tuyển tập các báo cáo nghiên cứu khoa học quốc tế về bệnh thú y đề tài: Tetracycline residue levels in cattle meat from Nairobi salughter house in Kenya | J. Vet. Sci. 2001 2 2 97-101 OURNAL OF Veterinary Science Tetracycline residue levels in cattle meat from Nairobi salughter house in Kenya F. K. Muriuki W. O. Ogara F. M. Njeruh and E. S. Mitema Department of Public Health Pharmacology Toxicology Faculty of Veterinary Medicine University of Nairobi . Box 29053 Nairobi Kenya Two hundred and fifty beef samples were collected from five slaughterhouses in and around the city of Nairobi. The beef animals were sourced from various parts of the country. Samples of 50-100 grams were collected randomly from the liver kidney and muscle of different beef carcasses. The samples collected were processed using multiresidue analytical methods that included liquid-gas partitioning and set-pat C18 cartridges chromatographic clean up. Chlortetracycline and oxytetracycline detection was done using Knauer Model 128 HPLC with an electron capture detector. Out of the 250 samples that were analyses for tetracycline residues 114 had detectable tetracycline residues. Of the 114 samples with detectable tetracycline residues 60 24 were liver samples 35 14 were kidney samples and 19 were muscle samples. The mean p residue levels of tetracycline for the five slaughterhouses studied were as follows Athi River 1 046 gg kg Dandora 594 ng kg Ngong 701 Jtg kg Kiserian 524 gg kg and Dagoretti 640 ng kg. Of the 250 samples analysed 110 44 had oxytetracyclines while 4 had chlortetracyclines. The mean residue levels of the detected tetracyclines were higher than the recommended maximum levels in edible tissues. This study indicates the presence of tetracycline residues in the various edible tissues. Regulatory authorities should ensure proper withdrawal periods before slaughter. This study indicates the presence of tetracycline residues in the various edible tissues. Regulatory authorities should ensure proper withdrawal period before slaughter of the animals. Key words Tetracycline residue Nairobi Kenya Corresponding author Phone