Journal
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
Volume 85, Issue 15, Pages 1141-1152Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/03067310500273682
Keywords
antibiotics; fish hatchery; ormetoprim; oxytetracycline; sulphadimethoxine
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A 2- year study of extensive and intensive fish hatcheries was conducted to assess the general temporal occurrence of antibiotics in aquaculture. Antibiotics were detected in 15% of the water samples collected during the 2001 - 2002 collection period and in 31% of the samples during the 2003 collection period. Antibiotics were detected more frequently in samples from the intensive hatcheries ( 17 and 39%) than in samples from the extensive hatcheries ( 14 and 4%) during the 2001 - 2002 and 2003 collection periods, respectively. The maximum ormetoprim, oxytetracycline, and sulphadimethoxine concentrations were higher in samples from the intensive hatcheries ( 12, 10, and 36 mu g/L-1), respectively, than in samples from the extensive hatcheries (< 0.05, 0.31, and 1.2 mu gL(-1)), respectively. Sulphadimethoxine persisted for a longer period of time ( up to 48 days) than ormetoprim ( up to 28 days) and oxytetracycline ( less than 20 days).
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