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Energy Value of Lactic Acid and Corn Steepwater and their Effects on Digestibility of Ruminant Rations^1,2,

Ohio Agricultural Experiment Station, Wooster

Abstract

Four feeding trials using individually fed steers, one lamb feeding trial, and three digestion trials with sheep were conducted to study the energy value of and effects on ration digestibility by lactic acid and corn steepwater.

Lactic acid and corn steepwater had no significant effects on gains or feed efficiency of steers fed purified rations or high corn rations. When fed in high roughage rations using paired feeding techniques, animals fed rations supplemented with lactic acid gained slightly but non-significantly faster than controls in the first trial. In the second trial, no differences were observed. When growing-fattening lambs were fed a 60% roughage ration, lambs fed a 7% lactic acid supplemented ration gained slightly but non-significantly faster than controls.

In the digestion trials, lactic acid significantly increased the digestible calories consumed by lambs fed a purified ration. Corn steepwater significantly increased crude fiber, cellulose and dry matter digestibility and decreased protein digestibility when added to a 50% roughage ration.

With four of the six groups of animals fed lactic acid, the acid had calculated feed replacement values ranging from 2.45 to 3.25

¹ Approved as Journal Article No. 33-62 by the Associate Director of the Ohio Agricultural Experiment Station, Wooster.

² This work was supported in part by a Grant-in-Aid of Research from the Corn Products Co., New York. New York.

³ Present address: Dean of Agriculture and Director the Experiment Station, South Dakota State College, College Station, Brookings, South Dakota.

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