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Journal of Dairy Science Vol. 73 No. 12 3544-3554
© 1990 by American Dairy Science Association ®
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Effects of Feeding Alkaline Hydrogen Peroxide-Treated Wheat Straw-Based Diets on Digestion and Production by Dairy Cows

M. G. Cameron 1, G. C. Fahey Jr. 1, J. H. Clark 1, N. R. Merchen 1, and L. L. Berger 1

1 Department of Animal Sciences, University of Illinois, Urbana 61801

Twelve Holstein cows, averaging 34 d postpartum, were used in three replications of a 4 x 4 Latin square design to determine the effects of feeding different levels of alkaline hydrogen peroxide-treated wheat straw on digestion and production responses in lactating dairy cows. Complete mixed diets consisted of 50% concentrate (DM basis) plus varying proportions of treated wheat straw, alfalfa haylage, and corn silage as the forage source. Treatment contained 0 (control), 12.5 (low), 25.0 (medium), or 37.5% (high) treated wheat straw in the diet. Dry matter intakes were 18.5, 17.2, 17.4, and 16.7 kg/d for the four treatments, respectively. Apparent digestibilities of DM and OM were decreased (approximately 4.4 percentage units), and NDF and ADF digestibilities were increased by 9.4 and 3.0 percentage units, respectively, with the high wheat straw diet. Yields of milk and 4% FCM, and SNF percentage did not differ among the treatment groups. Milk fat percentage increased (from 3.07 to 3.32%) and milk protein percentage decreased (from 2.61 to 2.56%) as the proportion of treated wheat straw increased in the diet. Cows fed the higher proportions of treated wheat straw had increased ruminal concentrations of total VFA and molar percentage acetate but a decreased molar percentage propionate, resulting in a greater acetate to propionate ratio. Cows fed the low and medium wheat straw diets had slightly lower DM intakes but production responses were similar to cows fed the control diet containing alfalfa haylage and corn silage as fiber sources.

Key Words: treated wheat straw • ruminal fermentation • hydrogen peroxide

Submitted on January 23, 1990
Accepted on June 11, 1990




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M. O. Odensten, Y. Chilliard, and K. Holtenius
Effects of Two Different Feeding Strategies During Dry-Off on Metabolism in High-Yielding Dairy Cows
J Dairy Sci, June 1, 2005; 88(6): 2072 - 2082.
[Abstract] [Full Text] [PDF]


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Copyright © 1990 by the American Dairy Science Association ®.