J. Anim Sci.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J. Anim Sci. 1978. 47:1167-1173.
© 1978 American Society of Animal Science
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Ferrell, C. L.
Right arrow Articles by Crouse, J. D.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Ferrell, C. L.
Right arrow Articles by Crouse, J. D.

Feed Utilization by Various Types of Steers1

C. L. Ferrell2 and J. D. Crouse2

U.S. Department of Agriculture, Clay Center, NE 68933

Abstract

An experiment was conducted to determine the effects of dietary energy density and type of steer upon feed intake, growth rate, feed efficiency and carcass composition. Three types represented by Red Poll, Chianina or Gelbvieh sired steers (mean initial weight 296, 310 and 332 kg, respectively) were fed either a high concentrate (HQ diet (3.17 Meal ME/kg) or a high corn silage (LC) diet (2.77 Meal ME/kg) ad libitum in replicated pens of six steers each. One-half of the Red Poll, Chianina and Gelbvieh sired steers on each diet were slaughtered when treatment mean weights reached 465 or 520, 560 or 640 and 555 or 625 kg, respectively, to allow comparison of steers from various treatment groups at constant carcass fat. Carcass composition was estimated from multiple regressions that included marbling score, longissimus area, adjusted fat thickness and kidney, heart and pelvic fat. Steers fed the HC diet consumed similar amounts of dry matter as those fed the LC diet (8.1 vs 8.2 kg/d); thus, ME intake was greater (25.7 vs 22.8 Mcal/d) by steers fed the HC diet. Daily gain was greater by steers fed the HC diet (1.24 vs 1.13 kg). Dry matter required per kilogram of gain was less by steers fed the HC diet (6.6 vs 7.2 kg), but ME required per kilogram of gain was similar (20.9 vs 20.0 Meal). These data suggested a difference in net efficiency of energy utilization for maintenance or gain due to steer type. Type of steer significantly affected most traits measured, but no interactions were observed between steer type and diet.

Footnotes

1 Cooperation of the Nebraska Experiment Station, University of Nebraska, Lincoln is acknowledged.

2 US Meat Animal Research Center, Federal Research, Science Education Administration, USDA.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1978 by the American Society of Animal Science.