Limited survey of residual tetracyclines in tissues collected from diseased animals in Aichi Prefecture, Japan
Oka, H.; Ikai, Y.; Kawamura, N.; Hayakawa, J.
Journal - Association of Official Analytical Chemists 74(6): 894-896
1991
ISSN/ISBN: 0004-5756 PMID: 1757409 Document Number: 373706
Tissues were collected to survey the actual conditions of tetracycline antibiotics (TCs) residues in slaughtered animals that did not pass inspection at the slaughterhouse in Aich: Prefecture, Japan, because of the presence of disease symptoms. Tissues were analyzed by liquid chromatography. Among 271 samples, 49 (18.1%) were positive for oxytetracycline (OTC), 5 (1.8%) for chlortetracycline (CTC), and 5 (1.8%) for doxcycline (DC), respectively. One sample (cattle kidney) was positive for both OTC and DC. However, tetracycline was not detected in any samples. Percentage frequencies of TCs residues were 29.1% (37/127)and 15.2% (22/144) for cattle and hogs, respectively. Kidney samples showed higher incidence of TCs residues and 1.5-7 times higher residual concentrations than liver and miscellaneous samples.