Pesta A C, Nuttelman B L, Shreck A L, Griffin W A, Klopfenstein T J, Erickson G E
J Anim Sci. 2015 Sep;93(9):4350-7. doi: 10.2527/jas.2015-9247.
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.
两项试验评估了浓缩酒糟可溶物（CDS）对育肥牛生长性能和胴体特性的影响。在试验1中，250头杂交阉牛（初始体重=355±18千克）分别饲喂0%、9%、18%、27%或36%的CDS（干物质基础），这些CDS替代了一部分尿素以及1:1比例的干碾压玉米（DRC）和高水分玉米（HMC）。阉牛被分为3个体重组，并随机分配到25个栏中。随着CDS添加量从0%增加到36%，日粮脂肪含量从3.7%增加到9.4%。随着CDS增加，采食量呈线性下降（P<0.01）。ADG（P=0.01）和料重比（P<0.01）呈二次曲线反应，CDS添加量为20.8%时增重最大，CDS添加量为32.5%时料重比最大，比饲喂0%CDS的阉牛效率高12%。试验2采用2×4析因设计，使用400头杂交阉牛（初始体重=339±15千克），在两种含有20%改性酒糟及可溶物（MDGS）或20%协同饲料（湿玉米麸质饲料和MDGS的混合物）的基础副产品日粮中评估0%、7%、14%或21%的CDS（干物质基础）。阉牛被分为2个体重组，并随机分配到40个栏中。观察到基础日粮×CDS添加量对ADG、热胴体重和末重有交互作用趋势（P<0.10）。在MDGS日粮中，增重呈线性增加（P=0.01）且有二次曲线增加的趋势（P=0.09），CDS添加量为16%时计算得出的ADG最大。在基于协同饲料的日粮中，添加CDS对ADG没有影响。无论基础日粮如何，增加CDS都会导致料重比呈线性增加（P<0.01）。浓缩酒糟可溶物可以以大于30%（干物质基础）的比例添加到日粮中，无需添加其他副产品，并且能提高动物生长性能。同样，CDS可以与其他副产品饲料一起饲喂，但对生长性能的改善较小。
