Residues of oxytetracycline in cultured juvenile blue shrimp, Penaeus stylirostris (Crustacea: Decapod), fed medicated feed for 14 days

Leone L. Mohney, Rodney R. Williams, Thomas A. Bell, Donald V. Lightner

Research output: Contribution to journalArticle

19 Scopus citations


Juvenile shrimp fed for 14 days on oxytetracycline (OTC) medicated feed with a potency of 1500 mg OTC kg-1 of feed reached a level of 33 μg OTC g-1 of shrimp tail muscle within 4 days, as measured by the microbial agar plate diffusion assay method for oxytetracycline in tissues, approved by the Association of Official Analytical Chemists. The concentration of OTC remained between 3.3-5.2 μg OTC g-1 of shrimp tail muscle from Day 4 through Day 14 of the feeding period. These concentrations were greater than the Minimum Inhibitory Concentration for sensitive organisms. By the fifth day following cessation of feeding medicated feed the drug content in shrimp tail muscle was less than the detectable limit for the method, or 0.4 μg of OTC g-1 shrimp tissue.

Original languageEnglish (US)
Pages (from-to)193-202
Number of pages10
Issue number3-4
StatePublished - Mar 31 1997



  • Medicated feed
  • Oxytetracycline
  • Penaeus stylirostris
  • Residue
  • Shrimp

ASJC Scopus subject areas

  • Aquatic Science

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