Mallinckrodt Veterinary, Inc.

Fred J Hart

Martin J Jacobs

A method for promoting growth in fish comprising administering a low level dosage amount of zearalanol to fish. The zearalanol may be conveniently administered to the fish via a novel fish feed formulation comprising a conventional feed mixture supplemented with a relatively low dosage amount of zearalanol ranging from 1 to 20 parts per million (ppm) zearalanol in the feed. In another embodiment, the zearalanol may be administered to the fish in the form of a novel complex of zearalanol and a cyclodextrin compound which further enhances the growth process.

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Glen Alpine, Australia

Fred J Hart