J. Anim Sci.
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J. Anim Sci. 1976. 43:478-482.
© 1976 American Society of Animal Science
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Influence of Alkali Treatments of Corn Cobs on in Vitro Dry Matter Disappearance and Lamb Performance1

Whitney Rounds2, Terry Klopfenstein, John Waller and Tom Messersmith

University of Nebraska, Lincoln 68583

Abstract

Four trials were conducted to evaluate alkali chemicals for treating corn cobs. Trial 1 was conducted using the artifical rumen which indicated that NaOH could be replaced on an equimolar basis with KOH as a chemical treatment for ground corn cobs. Treating and ensiling ground corn cobs with 3% NaOH plus 1% Ca(OH)2 increased average daily gain, feed intake and feed efficiency over cobs treated with 4% NaOH in growing rations for lambs (145 g/day gain vs 118 g/day). The increased performance may have been the result of decreasing the amount of Na fed to the lambs in the ration. Ca(OH)2 appears quite economical as a partial replacement for NaOH for treating cobs as well as supplying supplemental Ca. Treating corn cobs with 4% NH4OH resulted in reduced consumption. Corn cobs treated with NH4OH did not ferment. Good animal performance resulted from feeding this material in combination with a fermented feed. Cobs treated with 4% NH4OH appeared to be equal in feeding value to 4% NaOH treated cobs.

Footnotes

1 Published with the approval of the Director as Paper No. 3957 Journal Series, Nebraska Agricultural Experiment Station. This research was supported in part by Farmland Industries.

2 Present address: Texas A&M University Research and Extension Center, Vernon.






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Copyright © 1976 by the American Society of Animal Science.