摘要
A feedlot finishing study evaluated the effect of increasing inclusions of either wet (WDGS) or modified distillers grains plus solubles (MDGS) in steam-flaked corn (SFC) based diets (Exp 1). Two individually-fed studies were conducted to evaluate the effect of feeding high-moisture corn (HMC), SFC, or a blend of the grains with or without MDGS (Exp 2 & 3). Lastly, a pooled analysis of previous research from the University of Nebraska was conducted to evaluate the effect of corn processing method, distillers grains types, oil removal from distillers, and dietary distillers concentration on cattle performance and total feeding costs under different historical price scenarios (Exp 4). In Exp 1, replacing SFC with either distillers byproduct resulted in increased dry matter intake (DMI) and average daily gain (ADG). However, feeding WDGS linearly improved feed efficiency (G:F), whereas feeding MDGS resulted in similar G:F as control-fed cattle. In Exp 2, cattle were fed 20% MDGS with blends of HMC and SFC which were denoted as: 0% SFC, 25% SFC, 50% SFC, 75% SFC, or 100% SFC, which represented the percent SFC of the total grain in the diet. Similarly, these 5 diets were utilized in Exp 3, along with 0% SFC control, 50% SFC control, and 100% SFC control in diets without distillers. In both Exp 2 and 3, cattle had greater G:F as SFC inclusion increased in the diets regardless of distillers inclusion. Additionally, a positive associative effect was observed in Exp 3 which resulted in a quadratic improvement in ADG in control diets as SFC inclusion increased. Exp 4 determined that SFC improved feed conversion, compared to dry-rolled corn (DRC), HMC, or blends of these two grains, regardless of distillers inclusion. Additionally, based on this study feeding distillers grains in finishing diets improved G:F and reduced cattle feeding costs, including lower supplemental protein costs and lower total feeding costs compared a diet without distillers.
摘要译文
一项饲养场饰面研究评估了基于蒸汽粉的玉米（SFC）饮食（EXP 1）中湿（WDG）或改良的蒸馏剂颗粒加上溶解度（MDG）的夹杂物的影响。进行了两项单独喂养的研究，以评估饲喂高动物玉米（HMC），SFC或带有MDGS的谷物的混合物（EXP 2和3）的效果。最后，对内布拉斯加州大学进行了对先前研究的汇总分析，以评估玉米加工方法的影响，蒸馏剂类型，从蒸馏器中去除油以及饮食蒸馏厂对牛表现的集中以及在不同的历史价格方面的总饲料成本（EXP 4）。在EXP 1中，用蒸馏剂副产品代替SFC会导致干物质摄入量增加（DMI）和平均每日增益（ADG）。然而，喂养WDG线性提高了进食效率（G：F），而饲喂MDGS导致类似的G：F与对照喂养的牛相似。在EXP 2中，将牛与HMC和SFC的混合物一起喂食20％的MDG，称为：0％SFC，25％SFC，50％SFC，75％SFC或100％SFC，代表总数为SFC的百分比。饮食中的谷物。同样，这5种饮食在EXP 3中使用，以及0％的SFC控制，50％的SFC控制和100％的SFC控制，无需蒸馏器。在EXP 2和3中，无论蒸馏剂包含什么，牛的饮食中的SFC纳入都会增加牛：f：f。此外，在EXP 3中观察到阳性的缔合效应，随着SFC纳入的增加，对照饮食的ADG二次改善。EXP 4确定SFC与这两种晶粒的干玉米（DRC），HMC或混合物相比，SFC改善了饲料转化率。此外，基于这项研究，喂食蒸馏剂在饮食中喂养谷物，改善了G：F和降低的牛喂养成本，包括降低补充蛋白质成本和降低的总喂养成本，而没有蒸馏器的饮食。
Troyer, Braden C.. Impact of Corn Processing Method on Finishing Cattle Performance when Fed with or without Distillers Byproducts[D]. US: The University of Nebraska - Lincoln, 2022