University of California

Promone implants for heifers in the feedlot


A. W. Mitchell
H. T. Strong
R. G. Loy

Authors Affiliations

Alva W. Mitchell is Farm Advisor, Butte County; Horace T. Strong is Extension Animal Husbandman; Robert G. Loy is Assistant Professor and Assistant Animal Husbandman, University of California, Davis.

Publication Information

Hilgardia 20(11):2-3. DOI:10.3733/ca.v020n11p2. November 1966.

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Limited trials with Promone, a progesterone-like hormone, showed considerable promise for increasing weight gains and feed efficiency of heifers in the feedlot. The trial reported here tested the feedlot performance of heifers when implanted with 200 and 400 mg of Promone, as compared with stilbestrol implants and with a control group.

Mitchell A, Strong H, Loy R. 1966. Promone implants for heifers in the feedlot. Hilgardia 20(11):2-3. DOI:10.3733/ca.v020n11p2
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