condensed corn distillers solubles, growing diets, steers
A trial was conducted as a randomized block design to assess the effects of condensed corn distillers solubles (CCDS) on performance of steer calves (n = 200) fed 40% concentrate, dry rolled corn-hay based growing diets. CCDS was included at 0 (MSBM), 5 (5CCDS1, 10 (IOCCDS), or 20% (20CCDS) of diet DM, replacing soybean meal, molasses, and corn. A corn silagetsupplement diet was also included (SIL). Dry matter intakes at higher CCDS levels were lower than that of MSBM (P<.05). Average daily gain was not affected (P>.20) and, as a result, feed efficiency (FIG) tended to improve (P = .14). Steers fed SIL consumed less DM (P< .05), gained faster (P<.01), and were more efficient (P< .01) than all other treatments. Ruminal fluid was collected by stomach tube from steers (n=90) at -.5, + 1, +4, and + 7 hours from feeding. Values reported are means across sampling times. Ruminal NH3N and molar proportions of acetate decreased (P< .05) and propionate increased (P< .05) with increasing CCDS level. Despite significance, no discernable pattern was observed for ruminal fluid pH. CCDS was an effective protein and energy source in 40% concentrate corn-hay growing diets. Based on performance, maximum inclusion rate is at least 20% of diet DM.
Number of Pages
South Dakota State University
Copyright © 1996 South Dakota State University.
Sharp, G. A. and Birkelo, C. P., "Effect of Increasing Levels of Condensed Corn Distillers Solubles on Performance of Growing Steers" (1996). South Dakota Beef Report, 1996. 3.