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  • Title: Finishing performance of feedlot cattle fed condensed distillers solubles.
    Author: Pesta AC, Nuttelman BL, Shreck AL, Griffin WA, Klopfenstein TJ, Erickson GE.
    Journal: J Anim Sci; 2015 Sep; 93(9):4350-7. PubMed ID: 26440335.
    Abstract:
    Two experiments evaluated the effects of condensed distillers solubles (CDS) on performance and carcass characteristics of finishing beef cattle. In Exp. 1, 250 crossbred steers (initial BW = 355 ± 18 kg) were fed 0, 9, 18, 27, or 36% CDS (DM basis) which replaced a portion of urea and a 1:1 ratio of dry-rolled corn (DRC) and high-moisture corn (HMC). Steers were divided into 3 BW blocks and were assigned randomly to 25 pens. Dietary fat increased from 3.7 to 9.4% as CDS inclusion increased from 0 to 36%. Intake decreased linearly ( < 0.01) as CDS increased. A quadratic response was observed for ADG ( = 0.01) and G:F ( < 0.01) with maximum gain calculated at 20.8% CDS and maximum G:F at 32.5% CDS inclusion, which was 12% more efficient than those fed 0% CDS. Experiment 2 was designed as a 2 × 4 factorial using 400 crossbred steers (initial BW = 339 ± 15 kg) evaluating 0, 7, 14, or 21% CDS (DM basis) in 2 base byproduct diets containing either 20% modified distillers grains plus solubles (MDGS) or 20% Synergy (a blend of wet corn gluten feed and MDGS). Steers were divided into 2 BW blocks and were assigned randomly to 40 pens. A tendency for a base diet × CDS inclusion interaction was observed for ADG, HCW, and final BW ( < 0.10). Gain increased linearly ( = 0.01) and tended to increase quadratically ( = 0.09) in MDGS diets, with maximum calculated ADG at 16% CDS inclusion. Inclusion of CDS had no effect on ADG in Synergy-based diets. Increasing CDS resulted in a linear increase in G:F ( < 0.01) regardless of basal diet. Condensed distillers solubles may be included in the diet at greater than 30% (DM basis) without other byproducts and improve animal performance. Likewise, CDS can be fed in combination with other byproduct feeds but with less improvement in performance.
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