两个实验评估了乙醇工厂脱油过程后或通过在脱油后向DGS中添加玉米油后,酒糟中剩余的玉米油百分比的降低以及可溶物(DGS)对完成牛的性能和营养消化的影响。实验1使用在32个围栏(10个围栏/围栏)中饲喂的320个一岁的野牛(初始BW=413kg;SD=25kg),并分配给四种处理之一(n=8个围栏/处理)。四种处理包括混合的DRC:HMC玉米控制饮食(CON),脱油改性酒糟加上可溶物,占饮食DM(DODGS)的40%,脱油改性酒糟加上可溶物,包括38%的饮食DM加上2%添加的玉米油(DODGS+油),和全脂改性酒糟加上可溶物,占饮食DM(FFDGS)的40%。DODGS产品含有8.9%脂肪,而FFDGS产品含有11.6%脂肪。干物质摄入量(dmi)受到治疗(p=0.01)的影响,饲喂dodgs的牛和饲喂con的牛,DODGS+石油,和FFDGS具有较低的QI。饮食治疗倾向于影响ADG(p=0.06),饲喂DODGS和DODGS+油的母牛比CON有更大的收益,FFDGS是中间的。由于ADG增加,G:F在处理之间不同(p<0.01),对于饲喂DODGS+油和FFDGS的牛观察到最大的饲料效率。与饲喂DRC:HMC玉米混合物相比,在饮食中包括MDGS将G:F提高了6%至11%,DODGS+油和FFDGS的G:F分别提高了4.9和1.2%,分别,与DODGS相比。热car体重量受饮食处理的影响(HCW;p=0.05),DODGS-和DODGS+喂油的牛肉具有最重的HCW,CON拥有最轻的HCW,和FFDGS是一个中间。实验2是5×4不平衡拉丁矩形消化实验,采用四种饮食,五个反刍动物,和使用与Exp相同的处理的五个时期。1.CON的膳食脂肪含量为4.2、6.0、7.9和7.1%,DODGS,DODGS+石油,FFDGS,分别。DM的摄入量,OM,能量以及总肠道脂肪消化率和DE(Mcal/d)不受饮食处理的影响(p≥0.46)。当将玉米油加回到脱油的MDGS中时,与DODGS相比,对OM(p<0.01)和NDF(p=0.07)的消化率有负面影响,FFDGS,和CON。从改性酒糟和可溶物中部分去除油并没有显着影响牛的性能,car体性状,能量含量,或消化率,当MDGS被包括在约40%的饮食DM。
Two experiments evaluated the impact of the reduction in the percentage of corn oil remaining in distillers grains plus solubles (DGS) after the ethanol plant de-oiling process or by adding corn oil back to DGS following de-oiling on finishing cattle performance and nutrient digestion. Experiment 1 utilized 320 yearling steers (initial BW = 413 kg; SD = 25 kg) fed in 32 pens (10 steers/pen) and assigned to one of four treatments (n = 8 pens/treatment). The four treatments consisted of a blended DRC:HMC corn control diet (CON), de-oiled modified distillers grains plus solubles included at 40% of diet DM (DODGS), de-oiled modified distillers grains plus solubles included at 38% of diet DM plus 2% added corn oil (DODGS + Oil), and full-fat modified distillers grains plus solubles included at 40% of diet DM (FFDGS). The DODGS product contained 8.9% fat while the FFDGS product contained 11.6% fat. Dry matter intake (DMI) was impacted by treatment (p = 0.01) with steers fed DODGS having the greatest DMI and steers fed CON, DODGS + Oil, and FFDGS having lower DMI. Dietary treatment tended to impact ADG (p = 0.06) with steers fed DODGS and DODGS + Oil having greater gains than CON, with FFDGS being an intermediate. As a result of increased ADG, G:F differed between treatments (p < 0.01) with the greatest feed efficiency observed for steers fed DODGS + Oil and FFDGS. Including MDGS in the diet improved G:F by 6 to 11% compared to feeding DRC:HMC corn blend, with an improvement in G:F of 4.9 and 1.2% for DODGS + Oil and FFDGS, respectively, compared to DODGS. Hot carcass weight was impacted by dietary treatment (HCW; p = 0.05), with DODGS- and DODGS + Oil-fed steers having the heaviest HCW, CON steers having the lightest HCW, and FFDGS being an intermediate. Experiment 2 was a 5 × 4 unbalanced Latin rectangle digestion experiment with four diets, five ruminally cannulated steers, and five periods that utilized the same treatments as Exp. 1. Dietary fat measured 4.2, 6.0, 7.9, and 7.1% for CON, DODGS, DODGS + Oil, and FFDGS, respectively. Intakes of DM, OM, and energy as well as total tract fat digestibility and DE (Mcal/d) were not impacted by dietary treatment (p ≥ 0.46). When corn oil was added back to de-oiled MDGS, there was a negative impact on digestibility of OM (p < 0.01) and NDF (p = 0.07) compared with DODGS, FFDGS, and CON. Partially removing oil from modified distillers grains plus solubles did not significantly impact cattle performance, carcass traits, energy content, or digestibility when MDGS was included at approximately 40% of diet DM.