J. Anim Sci.
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J. Anim Sci. 1979. 49:354-360.
© 1979 American Society of Animal Science
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Wheat Straw and Sodium Hydroxide Treatment in Beef Cow Rations1

C. W. Acock2, J. K. Ward3, I. G. Rush3 and T. J. Klopfenstein3

University of Nebraska, Lincoln 68583

Abstract

Two cow drylot wintering trials and a lamb digestion trial were conducted to evaluate wheat straw in maintenance diets for gestating beef cows. Wheat straw or sodium hydroxide (NaOH) treated wheat straw, when fed ad libitum with one-third alfalfa hay, supported gestating cow weight gains equivalent to a limitfed alfalfa-bromegrass diet. Cows fed NaOH treated wheat straw supplemented with soybean meal and minerals gained less weight (P<01) than cows on the other treatments. Calfbirth weights, calving difficulty and subsequent reproductive performance of the cows were similar for all treatments. Apparent digestibility of wheat straw was increased (P<01) by 4% NaOH treatment in a lamb digestion trial but was not altered by balancing the sodium intake with other specific minerals. The increase in digestibility of wheat straw due to NaOH treatment was greater in vitro than in vivo.

Footnotes

1 Published with the approval of the Director as Paper No. 5670 Journal Series, Nebraska Agr. Exp. Sta.

2 College of Veterinary Medicine, Pullman, WA.

3 Department of Animal Science.






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Copyright © 1979 by the American Society of Animal Science.