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


     

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 Similar articles in PubMed
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 HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Jenkins, T. G.
Right arrow Articles by Ferrell, C. L.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Jenkins, T. G.
Right arrow Articles by Ferrell, C. L.

Journal of Animal Science, Vol 69, Issue 7 2762-2769, Copyright © 1991 by American Society of Animal Science

JOURNAL ARTICLE

Differences among breed crosses of cattle in the conversion of food energy to calf weight during the preweaning interval

T. G. Jenkins, L. V. Cundiff and C. L. Ferrell
USDA, Roman L. Hruska U.S. Meat Anim. Res. Center, Clay Center, NE 68933-0166.

The objective of this study was to determine whether F1 cows that differ in genetic potential for weight at maturity and milk yield vary in the conversion of food energy to calf weight gain. Food intakes and weight change data were recorded by pen for cows and calves from approximately 45 d postpartum. Cows assigned to the study were 7- to 9-yr-old F1s produced by top-crossing Angus, Hereford, Brown Swiss, Chianina, Gelbvieh; Maine Anjou, and Red Poll sires to either Angus or Hereford dams. Calves were sired by Simmentals. Experimental units were pens (10 to 12 cow/calf pairs); pen was replicated within breed of sire in each of 2 yr (n = 24). Calf weight gain and energy consumed by the dams differed among the F1s, as did the ratio of calf weight gain to energy consumed by the calf and cow. Angus or Hereford (35.8), Red Poll (35.7), or Maine Anjou (35.6) F1s produced more calf weight per unit of energy consumed (g/Mcal) by the cow and calf than Chianina (33.1) or Gelbvieh (33.7) F1 females; Brown Swiss cows were intermediate (34.3). Differences in food conversion efficiency exist among breed crosses. These differences seem to be associated with breed cross differences in genetic potential for milk yield and mature weight; an exception to this trend was the Maine Anjou.


This article has been cited by other articles:


Home page
 J ANIM SCIHome page
L. Calegare, M. M. Alencar, I. U. Packer, P. R. Leme, C. L. Ferrell, and D. P. D. Lanna
Preweaning performance and body composition of calves from straightbred Nellore and Bos taurus x Nellore crosses
J Anim Sci, May 1, 2009; 87(5): 1814 - 1820.
[Abstract] [Full Text] [PDF]

Home page
 J ANIM SCIHome page
L. Calegare, M. M. Alencar, I. U. Packer, C. L. Ferrell, and D. P. D. Lanna
Cow/calf preweaning efficiency of Nellore and Bos taurus x Bos indicus crosses
J Anim Sci, February 1, 2009; 87(2): 740 - 747.
[Abstract] [Full Text] [PDF]

Home page
 J ANIM SCIHome page
L. Calegare, M. M. Alencar, I. U. Packer, and D. P. D. Lanna
Energy requirements and cow/calf efficiency of Nellore and Continental and British Bos taurus x Nellore crosses
J Anim Sci, October 1, 2007; 85(10): 2413 - 2422.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1991 by the American Society of Animal Science.