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Selenium and Vitamin E and K Additions to A No-Hay Finishing Cattle Ration^1,2,3,4,

Iowa Agricultural and Home Economics Experiment Station, Ames

Abstract

Three feeding trials were conducted with beef cattle in which a combination of supplemental vitamin E and K to a no-hay finishing ration resulted in superior performance. The vitamin supplemented cattle averaged 9% faster liveweight gains and improved feed conversion. A fourth cattle feeding trial was conducted in which supplemental selenium was added to a similar finishing cattle ration. The liveweight gain response from selenium was fully as high or higher than the responses obtained with supplemental vitamins. Also, supplemental selenium, as well as supplemental vitamin A, exerted a sparing action upon liver vitamin E. The possible importance of these results and some of the limitations in interpreting them in feeding practice were discussed.

¹ Journal Paper No. J-4566 of the Iowa Agricultural and Home Economics Experiment Station, Ames, Iowa. Project No. 869.

² The studies and observations on which this paper was based were conducted in part with the support of The Rockefeller Foundation.

³ Selenium analysis of the cattle ration was conducted by Ivan S. Palmer at South Dakota State College, Brookings, South Dakota.

⁴ Vitamin E supplied by Distillation Products, Inc., Rochester, New York; menadione sodium bisulfite by Abbott Laboratories, Chicago, Illinois; and selenium premix by Calcium Carbonate Company, Quincy, Illinois.