Tissue Residues and Metabolism of Narasin in Chicken

Chickens were fed 50 ppm [14C]narasin rations. After 5 days, the chickens were sacrificed, and tissues were taken for assay. Tissues were assayed for ...
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J. Agric. Food Chem. 1996, 44, 2829−2834

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Tissue Residues and Metabolism of Narasin in Chicken Daniel J. Sweeney,* Allison Kennington, and Alvin L. Donoho Animal Science Product Development, A Division of Eli Lilly and Company, Greenfield, Indiana 46140

Chickens were fed 50 ppm [14C]narasin rations. After 5 days, the chickens were sacrificed, and tissues were taken for assay. Tissues were assayed for total radioactivity by solubilization and liquid scintillation counting. The mean residue concentrations of narasin equivalents were 0.32 ppm in liver, 0.12 ppm in fat, 0.08 ppm in skin/fat, 0.04 ppm in kidney, and