Eighty-one steers [428 ± 3.5 kg of body weight (BW)] were used to determine the effect of grain type (corn vs. barley) and oil concentration of dried corn distillers grains plus solubles (DDGS; moderate = 7.9% vs. low = 4.5% ether extract) on growth performance, feeding behavior, and carcass characteristics. Intake and feeding behavior traits were calculated from data generated via the Insentec feeding system. Steers were slaughtered with an average BW of 668 ± 4.4 kg. Final BW and average daily gain (ADG) were not affected by grain type or DDGS oil concentration. Dry matter intake (DMI) decreased (P = 0.002) and gain:feed ratio (G:F) increased (P = 0.01) in steers fed diets containing barley. Daily visits to the feeder decreased (P = 0.05), but time eating per visit increased (P = 0.03) in steers fed diets containing barley than corn. Plasma urea–N concentration was greater (P ≤ 0.05) in steers fed diets containing barley than corn and in steers fed diets containing low-oil DDGS than moderate-oil DDGS diets. There was no effect of treatment on carcass characteristics. These data indicate that steers fed diets containing barley had improved G:F and that including low-oil vs. moderate-oil DDGS in a finishing diet does not influence growth performance, feeding behavior, or carcass measurements.
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