Antibiotic residues in goats milk following intramammary treatment |
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Authors: | BM Hill KT Jagusch L Rajan GT Kidd |
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Institution: | 1. Ruakura Agricultural Research Centre , Private Bag, Hamilton, New Zealand;2. National Dairy Laboratory , Ruakura Agricultural Research Centre , Private Bag, Hamilton |
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Abstract: | Two lactational intramammary antibiotic preparations (cloxacillin and oxytetracycline) were each used to treat eight goatsby intramammary infusion in one half. The rate of release of the antibiotics was monitored by a diffusion assay based on the sensitive organism Bacillus stearothermophilus var. calidolactis. Cloxacillin was still detectable 156 hours afterthe final treatment while oxytetracycline was undetectable 108 hours following treatment. A small but significant amount of antibiotic was translocated between treated and untreated halves of the udder in both cases. |
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