A two-year study was conducted to determine the effect of feeding different protein sources on the performance of feeder cattle. During year 1 (Y1), 128 steers (506 ± 40 lb) were weighed and randomly allocated to 16 pens in a completely randomized design. Each pen was assigned to one of four treatment diets: 1) 20% soybean meal and corn (SBM); 2) 20% dried distillers grains with solubles (DDGS); 3) 20% wet distillers grains with solubles (WDGS); or 4) 20% blood meal, oil and corn (BM). In Y1, steers were fed a diet that consisted of 74% alfalfa/grass hay, 4% molasses and 2% supplement for the first 28 d and a diet that consisted of 50% alfalfa/grass hay, cracked corn, 4% molasses and 2% supplement for the remaining 56 d. During year 2 (Y2), 160 steers (535 ± 40 lb) were weighed and randomly allotted to 16 pens. Each pen was assigned to one of the four treatment diets used in Y1. The steers received the 50% alfalfa/grass hay based grower diet throughout the entire 57-d trial. Body weight was recorded prior to feeding at the start of the trial and every 28 d for both years. In Y1, ADG, DMI and G:F did not differ due to diet for the first 28 d and over the entire trial period. During the first 28 d of Y2, ADG, DMI and G:F was not affected by treatment; however, cumulative G:F of steers fed BM and WDGS were greater (P < 0.05) than steers fed SBM or DDGS. In conclusion, feeding BM and WDGS during the growing phase resulted in the most efficient gains when steers were started on a higher energy diet. In addition, distillers grains with solubles was an effective alternative to soybean meal in growing diets.
Number of Pages
South Dakota State University
Copyright © 2004 South Dakota State University
Mateo, Kristina S.; Tjardes, Kent E.; Wright, Cody L.; and Rops, Bradley D., "Evaluation of Feeding Wet Distillers Grains with Solubles, Dry Distillers Grans with Solubles and Blood Meal to Growing Steers" (2004). South Dakota Beef Report, 2004. 3.