Survey of Residual Tetracyclines in Kidneys of Diseased Animals in Aichi Prefecture, Japan (1985–1997)

Author: Oka Hisao   Ito Yoko   Ikai Yashitomo   Matsumoto Hiroshi   Kato Keiichi   Yamamoto Isao   Shimizu Michihiko   Kawamura Norihisa   Miyazaki Yutaka   Nojiri Takayasu   Okumura Masanao   Ohmi Shin   Sato Takeo   Mori Giichiro  

Publisher: AOAC International

ISSN: 1944-7922

Source: Journal of AOAC International, Vol.84, Iss.2, 2001-03, pp. : 350-353

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Abstract

A survey was conducted to determine the incidence of tetracycline antibiotic (TCAs) residues in the kidneys of slaughtered animals that did not pass inspection for human consumption by the Japanese Food Sanitation Law and the Meat Inspection Law at the slaughterhouses in Aichi Prefecture, Japan, from April 1985 to March 1998. The kidneys were analyzed by the AOAC Official Method 995.09. Among 424 animals (147 cattle and 277 pigs), 131 (30.9%) were contaminated with TCAs, including 69 (16.3%) with chlortetracycline (CTC), 61 (14.4%) with oxytetracycline (OTC), 3 (0.7%) with tetracycline (TC), and 1 (0.2%) with doxycycline (DC). One sample (cattle kidney) was contaminated with both OTC and DC. The frequencies of OTC and TC residues were significantly higher ( p< 0.05) in cattle than in pigs, whereas, the frequency of CTC was significantly higher ( p< 0.01) in pigs. Pig kidney samples collected in 1991–1997 had significantly higher incidences of TCAs and CTC ( p< 0.01) residues than those in 1985–1986.