PSIV-A-11 Effects of Supplementing Extruded Dried Distillers' Grains Cubes to Stocker Cattle Grazing Introduced Pastures on Subsequent Feedlot Performance and Carcass Characteristics

Abstract This research evaluated the effects of supplementing extruded dried distillers’ grains (DDG) cubes to grazing steers on subsequent finishing performance and carcass characteristics. Steers (n = 140) grazed tall fescue (Festuca arundinacea)/bermudagrass (Cynodon dactylon) pastures from 14 April 17 September 2020 with supplementation treatments 3 pastures/treatment) that included: 1) Fertilized Control (FC), no N fertilized (112 kg N/ha); 2) Supplement (FS), supplemented DDG at 2.9 kg/d prorated for 3-d/wk feeding pastures; 3) (S), 0.75% BW/d 5-d/wk unfertilized pastures. All animals were followed through phase in a commercial feedyard investigate carryover feedlot 2 pens comingled across supplemental treatment. Carcass characteristics via ultrasonography d0 d84 finishing, measurements obtained harvest. Feed DMI segregated individual according Guiroy et al. (2001) Tedeschi Fox (2020b). Supplemented heavier (P < 0.01) entry than FC, but harvest BW did not differ 0.23). However, S FS required 37 fewer days feed FC. Supplementation pasture reduced total 0.02) costs relative Gains greater FC d84, thereafter ≥ 0.15). At harvest, had greatest dressing percent lower yielding carcasses 0.01), 0.11) S. Overall, cube during negatively affect or characteristics, finishing.