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首页> 美国卫生研究院文献>Asian-Australasian Journal of Animal Sciences >Milk Production and Income over Feed Costs in Dairy Cows Fed Medium-roasted Soybean Meal and Corn Dried Distiller’s Grains with Solubles
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Milk Production and Income over Feed Costs in Dairy Cows Fed Medium-roasted Soybean Meal and Corn Dried Distiller’s Grains with Solubles

机译：奶牛饲喂中度焙炒的豆粕和玉米干酒糟加奶粉后的牛奶产量和收入超过饲料成本

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The aims of this study were to determine the effects of feeding medium-roasted soybean meal (SBM) and corn dried distiller’s grains with solubles (CDDGS) in dairy cows on milk production and income over feed costs. A randomized complete block design experiment was conducted with 24 crossbred multiparous Holstein Friesian dairy cows in early- and mid-lactation. Four dietary treatments were as follows: basal diet without feed substitute (Control), 7.17% dry matter (DM) roasted SBM replaced for concentrate (R-SBM), 11.50% DM CDDGS replaced for concentrate (DDGS), and 3.58% DM roasted SBM plus 5.75% DM CDDGS replaced for concentrate (SB-DG). The roasted SBM was produced using a medium-heated treatment at 100°C for 180 min. Dry matter intake was not affected by feeding high rumen undegradable protein (RUP) sources, but the replacement of roasted SBM and CDDGS for concentrate significantly improved (p<0.001) RUP intake (0.90, 0.86, and 0.88 kg/d corresponding to R-SBM, DDGS, and SB-DG) compared to the control (0.61 kg/d). Feeding roasted SBM and CDDGS alone or in combination had no significant effect on milk composition of dairy cows (p>0.05), whereas milk yield was significantly increased by 3.08 kg/d in the SB-DG group relative to the control group (p<0.01). Net income was meaningfully increased (p<0.05) from 4th week post feeding, the SB-DG group reached the greatest net income ($3.48/head/d) while the control group had the lowest value ($2.60/head/d). In conclusion, the use of CDDGS alone or in combination with medium-roasted SBM as substitute for concentrate in lactating dairy cattle diet led to improved milk production and net income over feed costs without affecting total dry matter intake and milk composition, while feeding medium-roasted SBM seemed to show intermediate values in almost parameters.
机译：这项研究的目的是确定在奶牛中饲喂中度烘烤的大豆粉（SBM）和玉米干酒糟含可溶物（CDDGS）对奶产量和收入超过饲料成本的影响。在泌乳初期和中期，对24头杂种荷斯坦黑白花奶牛进行了随机的完全区组设计实验。四种饮食处理方法如下：不使用饲料替代品的基础饮食（对照），7.17％的干物质（DM）焙烧的SBM代替浓缩物（R-SBM），11.50％的DM CDDGS代替的浓缩物（DDGS）和3.58％的DM焙烧SBM加5.75％DM CDDGS代替了精矿（SB-DG）。通过在100°C下进行180分钟的中度热处理来生产烤制的SBM。干物质摄入量不受高瘤胃不可降解蛋白质（RUP）来源的影响，但是用焙烧的SBM和CDDGS代替浓缩液可显着改善（p <0.001）RUP摄入量（0.90、0.86和0.88 kg / d，与R- SBM，DDGS和SB-DG）与对照（0.61 kg / d）相比。单独或联合饲喂烤SBM和CDDGS对奶牛的牛奶组成没有显着影响（p> 0.05），而SB-DG组的牛奶产量比对照组显着提高了3.08 kg / d（p < 0.01）。喂食后第4周的净收入显着增加（p <0.05），SB-DG组达到最大的净收入（$ 3.48 /头/天），而对照组的最低值（$ 2.60 /头/天）。总之，单独使用CDDGS或与中等烤制SBM结合使用以代替泌乳奶牛日粮中的浓缩物，可以提高牛奶产量和净收入（超过饲料成本），而又不影响干物质的总摄入量和牛奶成分，烤SBM似乎在几乎所有参数中都显示中间值。

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