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High Concentrate Studies with Beef Cattle

United States Department of Agriculture

Abstract

A series of 5 trials involving 124 cattle were conducted to study how the performance of cattle consuming high-concentrate rations, based around corn, will be affected by variations in crude fiber, vitamin A supplementation, pelleting and calcium and phosphorus supplementation.

It was found that cattle consumed significantly more corn and cob ration than cattle receiving a ground shell corn ration; however, the daily gains, feed efficiency and carcass data were not significantly different. There was a trend for cattle to consume less ration when it was pelleted as compared to the meal form with little effect on gains or feed efficiency being noted. The addition of 2,500 U.S.P. units of supplemental vitamin A per pound of ration did not statistically affect the feedlot or carcass data of cattle when compared to cattle receiving 500 U.S.P. units. Analysis of liver samples indicated significantly greater storage of vitamin A of cattle consuming greater amounts of the vitamin. There appeared to be no benefit from the addition of 1 or 4% additional steamed bone meal to the high-concentrate ration.

¹ Beef Cattle Research Branch, Animal Husbandry Research Division, ARS, Agricultural Research Center, Beltsville, Md.