Association of Myostatin on Performance and Carcass Traits in Crossbred Cattle

Authors

Stephanie K. Pruitt, University of Nebraska-Lincoln
Kelsey M. Rolfe, University of Nebraska-LincolnFollow
Brandon Nuttelman Nuttelman, University of Nebraska-Lincoln
William A. Griffin, University of Nebraska-LincolnFollow
Joshua R. Benton, University of Nebraska-LincolnFollow
Galen E. Erickson, University of Nebraska-LincolnFollow
Matthew L. Spangler, University of Nebraska-LincolnFollow

Date of this Version

2012

Comments

Published in 2012 Beef Cattle Report (2012) p. 32-34. Copyright © 2012 The Board of Regents of the University of Nebraska.

Abstract

Calf-fed steers and yearling heifersgenotyped as homozygous active, heterozygous, or homozygous inactive for myostatin were used to evaluate performance and carcass traits from Piedmontese influenced cattle. Homozygous inactive steers had similar ADG, lower DMI and lower F:G when compared to steers influenced by active myostatin. Steers and heifers with inactive myostatin showed similar trends in carcass traits producing larger LM area, greater dressing percentages and leaner carcasses. Similar ADG, lower DMI, and improved F:G were observed for homozygous inactive compared to homozygous active steers. Cattle with inactive myostatin require more days on feed than homozygous active cattle to reach similar live BW and 12^th rib fat endpoints.