Survey of residual tetracyclines in tissues collected from slaughtered animals in Aichi Prefecture, Japan, 1985-1996.

摘要

Tissues from animals that did not pass inspection at slaughterhouses because of disease symptoms were analysed for residual tetracyclines (TCs) using liquid chromatography. Among 218 animals (85 cattle and 133 pigs), 43 (19.7) were positive for oxytetracycline (OTC), 3 (1.4) for tetracycline, 28 (12.8) for chlortetracycline, and 1 (0.5) for doxycycline (DC). One sample (cattle kidney) was positive for both OTC and DC. Cattle and pig samples collected during 1991-1995 showed significantly higherincidence of TC and CTC residues than those collected during 1985-1986. Kidney samples showed a higher incidence of TCs residues and 3-4 times higher residual concentrations than liver samples.