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 Waggoner, A. W.
Right arrow Articles by Kemp, K. E.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Waggoner, A. W.
Right arrow Articles by Kemp, K. E.

Journal of Animal Science, Vol 68, Issue 8 2380-2386, Copyright © 1990 by American Society of Animal Science

JOURNAL ARTICLE

Performance, carcass, cartilage calcium, sensory and collagen traits of longissimus muscles of open versus 30-month-old heifers that produced one calf

A. W. Waggoner, M. E. Dikeman, J. R. Brethour and K. E. Kemp
Kansas State University, Manhattan 66506.

One hundred eleven Simmental x Hereford (3/8 to 5/8 Simmental) heifers were used to determine the effects of age, parturition and implantation on performance, carcass and meat-sensory traits, muscle-collagen characteristics and thoracic-button calcification. Eighty-five heifers that calved at about 2 yr of age, designated as single-calf heifers (SCH), were either implanted (I-SCH) with Synovex-H or not implanted (NI-SCH). The remaining 26, 2-yr-old non-pregnant heifers (2-OH) served as controls. Additionally, 24, 1-yr-old open heifers (1-OH) from the same genetic source were utilized as the standard heifer-production system. The 1-OH and 2-OH were slaughtered after being fed a high-grain diet for 137 and 112 d, respectively. The SCH were fed the same high-grain diet beginning about 1 mo after calving and were fed 137 d before slaughter. The 33 I-SCH were implanted when started on the high-grain diet. Calves were weaned about 5 wk before the SCH were slaughtered. The 2-OH had the highest (P less than .05) feedlot ADG, whereas no differences (P greater than .05) occurred among other treatments. Dressing percentages were higher (P less than .01) for I-SCH than for NI-SCH. Carcass weights were lowest (P less than .05) and percentage kidney, pelvic and heart fat was highest (P less than .01) for 1-OH. Fat thickness, yield grades, marbling scores and quality grades were similar (P greater than .05) and desirable for all treatments.(ABSTRACT TRUNCATED AT 250 WORDS)


This article has been cited by other articles:


Home page
 J ANIM SCIHome page
C. R. Raines, M. E. Dikeman, J. A. Unruh, M. C. Hunt, and R. C. Knock
Predicting cattle age from eye lens weight and nitrogen content, dentition, and United States Department of Agriculture maturity score
J Anim Sci, December 1, 2008; 86(12): 3557 - 3567.
[Abstract] [Full Text] [PDF]

Home page
 J ANIM SCIHome page
B. A. Reiling and D. D. Johnson
Effects of implant regimens (trenbolone acetate-estradiol administered alone or in combination with zeranol) and vitamin D3 on fresh beef color and quality
J Anim Sci, January 1, 2003; 81(1): 135 - 142.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1990 by the American Society of Animal Science.