HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Holter, J. B. Articles by Kabuga, J. D. Search for Related Content PubMed Articles by Holter, J. B. Articles by Kabuga, J. D.

Urea Versus Soybean Meal as Supplements for Corn Silage Fed to Heifers and Dry Cows^{1, 2,}

University of New Hampshire, Durham 03824

Abstract

Six growing Holstein heifers and three mature dry cows were used in a complete energy and nitrogen balance trial to compare efficiency of use of diets of corn silage fed alone, treated with urea at ensiling (26% N from urea), or blended with soybean meal (30% N from soybean meal) at feeding. Supplementation of silage with urea or soybean meal to give about 12% crude protein (dry matter basis) generally improved its digestibility. Urea and soybean meal did not differ significantly in their effects on energy and nitrogen utilization of the diet. Urea-treated silage was consumed as well as that supplemented with soybean meal when both were fed free-choice. No evidence was found that urea-nitrogen is used less efficiently than soybean meal-nitrogen as a supplement to corn silage fed to heifers and dry cows.

¹ Published with the approval of the Director of the New Hampshire Agricultural Experiment Station as Scientific Contribution No. 729.

² Technical assistance of H. H. Hayes and J. Tetherly is gratefully acknowledged.

³ Present address: Division of Animal Husbandry, PO Box 5779, Accra-North, Ghana, W. Africa.