ERA

Download the full-sized PDF of The influence of breed on the efficiency of growth and muscle deposition in bulls and heifersDownload the full-sized PDF

Analytics

Share

Permanent link (DOI): https://doi.org/10.7939/R3RN6H

Download

Export to: EndNote  |  Zotero  |  Mendeley

Communities

This file is in the following communities:

Roy Berg Kinsella Research Ranch

Collections

This file is in the following collections:

Journal Articles (Kinsella Ranch)

The influence of breed on the efficiency of growth and muscle deposition in bulls and heifers Open Access

Descriptions

Author or creator
Jones, S. D. M.
Price, M. A.
Berg, R. T.
Additional contributors
Subject/Keyword
carcass grading
weaning
beef production
cattle
Type of item
Journal Article (Published)
Language
English
Place
Time
Description
Two breeds (Hereford (HE), and Dairy Synthetic (DY)), and two sexes (bulls and heifers) were compared for various measures of efficiency in beef production. DY animals had greater (P < 0.001) birthweights, and greater weaning weights (P < 0.001) than HE animals. At weaning, 16 animals of each breed-sex combination were grouped four to a pen and fed a high-concentrate cereal diet ad libitum to one of two slaughter weights (485 kg, 575 kg). Average daily gain and liveweight gained per 100 MJ dietary energy (DE) was greater (P < 0.05) for DY bulls than HE bulls. Average daily gain, but not liveweight gained per 100 MJ DE was greater (P < 0.05) for DY heifers than HE heifers. There were no differences (P < 0.05) in muscle gain per unit of liveweight among breed-sex combinations. At a constant liveweight DY bulls produced significantly (P < 0.05) more muscle than HE bulls, and DY heifers, significantly more (P < 0.05) than HE heifers. Muscle gain per 100 MJ DE was highest for DY bulls and lowest for DY heifers. For a constant amount of feed energy (23 241 MJ DE) DY bulls produced 20.1 kg (16%) more muscle than HE heifers. The overall results thus indicate that breed and sex cause important differences in the amount of carcass muscle produced for a constant energy intake.
Date created
1981
DOI
doi:10.7939/R3RN6H
License information
Rights
@1981 Jones, S. D. M., Price, M. A., Berg, R. T. This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited.
Citation for previous publication
Jones, S.D.M., Price, M.A. and Berg, R.T. (1981). The influence of breed on the efficiency of growth and muscle deposition in bulls and heifers. Canadian Journal of Animal Science, 61(2), 237-242. doi: 10.4141/cjas81-032
Source
Link to related item

File Details

Date Uploaded
Date Modified
Audit Status
Audits have not yet been run on this file.
Characterization
File format: pdf (Portable Document Format)
Mime type: application/pdf
File size: 414860
Last modified: 2016:06:24 18:55:03-06:00
Filename: cjas_61(2)_237
Original checksum: 8b874fef7711d8a7dbfe5d966a8e01ff
Well formed: true
Valid: false
Status message: Invalid page tree node offset=414371
File title: THE INFLUENCE OF BREED ON THE EFFICIENCY OF GROWTH AND MUSCLE DEPOSITION IN BULLS AND HEIFERS
File author: S.D.M. JONES, M.A. PRICE, R.T. BERG
Activity of users you follow
User Activity Date