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 Voelker, H. H. Articles by Clark, A. K. Search for Related Content PubMed Articles by Voelker, H. H. Articles by Clark, A. K.

High-Moisture Corn Preserved by Different Methods for Lactating Cows¹

Dairy Science Department, South Dakota State University, Brookings 57007-0647

ABSTRACT

Three trials with 20 lactating Holstein cows per trial were to compare rolled dry shelled corn with high-moisture (74.8% dry matter) rolled shelled corn preserved in oxygen-limiting storage (trial 1) with rolled shelled corn (71.6% dry matter) preserved with 1% propionic acid in a concrete bunker silo (trial 2) and with ground ear corn (72.5% dry matter) preserved with .5% propionic acid in a concrete bunker silo (trial 3). Cows were fed complete mixed rations containing (dry basis) 41.4% corn silage; 16.2% alfalfa haylage; 33.8% corn; and 8.6% soybean meal, vitamins, and mineral mix. Milk yield, its composition, feed intakes, and body weight changes were similar for cows fed dry corn and high-moisture corn in each of the three trials. Ruminal concentrations of total volatile fatty acids and propionate concentrations were higher and molar proportions of acetate and ruminal pH were lower in cows fed high-moisture corn diets.

¹ Published with approval of the director of the South Dakota Agricultural Experiment Station as Publication 2051 of the Journal Series.

² Eastman Chemical Products, Inc., P.O. Box 431, Kingsport, TN 37662.