Real-time Ultrasound Trait Age Adjustment Factors for Replacement Angus Heifers

Doyle E. Wilson; Gene H. Rouse; Craig Hays

Realtime Ultrasound and Body Composition

Real-time Ultrasound Trait Age Adjustment Factors for Replacement Angus Heifers

Authors: Doyle E. Wilson (Iowa State University) , Gene H. Rouse (Iowa State University) , Craig Hays (Iowa State University)

Abstract

Real-time ultrasound (RTU) images from replacement Angus heifers were analyzed to determine adjustment factors and genetic parameter estimates. The traits analyzed included ribeye area, 12-13th rib fat thickness, rump fat thickness, and % intramuscular fat. Adjustments were calculated for heifers averaging 805 lbs at time of scanning. The adjustments include age adjustment and weight per day of age adjustment factors.

Keywords: ASL R1627

How to Cite: Wilson, D. E. , Rouse, G. H. & Hays, C. (2000) “Real-time Ultrasound Trait Age Adjustment Factors for Replacement Angus Heifers”, Iowa State University Animal Industry Report. 1(1).