Abstract
ABSTRACT The relationship between residual feed intake (RFI) and end product quality was evaluated in 133 steers from 5 Angus sires with low, moderate, or high percent intramuscular fat EPD. Steers (320.1 ± 35.76 kg) were evaluated for RFI during a 70- to 84-d growing period and classified into 3 groups based on RFI: efficient (less than -0.5 SD below the mean; n = 41), marginal (± 0.5 SD from the mean; n = 48), and inefficient (> 0.5 SD above the mean; n = 44). There were no differences among RFI groups for ADG, BW, fat thickness, carcass weight, YG, QG, or palatability traits. Inefficient steers had greater (P
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