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 HighWire Citing Articles via Google Scholar Google Scholar Articles by Van Horn, H. H. Articles by Wing, J. M. Search for Related Content PubMed Articles by Van Horn, H. H. Articles by Wing, J. M.

Complete Rations for Dairy Cattle. III. Evaluation of Protein Percent and Quality, and Citrus Pulp-Corn Substitutions¹

Dairy Science Department, University of Florida, Gainesville 32611

ABSTRACT

An experiment with complete rations containing 25.0% sugarcane bagasse pellets evaluated protein requirements of lactating cows and how well these requirements could be satisfied with urea. Several other objectives also were evaluated with 3 x 3 Latin squares. Treatments of basal rations and two increments of soybean meal were factorialized with two percents of citrus pulp and two quantities of methionine hydroxy analog which were fed continuously. The experiment involved 36 cows fed one of the three urea or one of the three soybean meal percents in each of three 4-wk periods. (1) High-corn (8.0% citrus pulp) depressed fat percent compared to 43.1% citrus pulp diets. (2) Urea depressed feed intake at 1.7 and 3.0%, particurlary in the high-corn diets. (3) Increments of soybean meal increased solids corrected milk production as compared to basal, but urea increments did not. Methionine hydroxy analog increased fat yield in cows receiving soybean meal diets but was a detriment to feed intake and solids corrected milk in high urea rations.

¹ Florida Agricultural Experiment Station Journal Series No. 5555. This research was supported in part by U.S. Sugar Corporation, Clewiston, FL.

² Formerly visiting professor; present address: Animal Industries Department, University of Puerto Rico, Mayaguez Campus, Lajas 00667.

This article has been cited by other articles:

				G. A. Broderick, D. R. Mertens, and R. Simons Efficacy of Carbohydrate Sources for Milk Production by Cows Fed Diets Based on Alfalfa Silage J Dairy Sci, July 1, 2002; 85(7): 1767 - 1776. [Abstract] [Full Text] [PDF]