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首页> 外文期刊>Asian-Australasian Journal of Animal Sciences >The Net Energy Values of Corn, Dried Distillers Grains with Solubles and Wheat Bran for Laying Hens Using Indirect Calorimetry Method
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The Net Energy Values of Corn, Dried Distillers Grains with Solubles and Wheat Bran for Laying Hens Using Indirect Calorimetry Method

机译：间接量热法测定玉米，带谷蛋白干馏物和麸皮的净能量值

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摘要

The present study was conducted to estimate the NE values of corn, dried distillers grains with solubles (DDGS) and wheat bran (WB) for laying hens based on an indirect calorimetry method and nitrogen balance measurements. A total of 576 twenty-eight-wk-old Dwarf Pink-shell laying hens were randomly assigned to four groups fed a basal diet (BD) or a combination of BD with 50% corn or 20% DDGS or 20% WB, with four replicates each. After a 7-d adaptation period, each replicate with 36 hens were kept in one of the two respiration chambers to measure the heat production (HP) for 6 days during the feeding period and subsequent 3-d fasting. The equilibrium fasting BP (FHP) provided an estimate of NE requirements for maintenance (NEm). The NE values of test feedstuffs was estimated using the difference method. Results showed that the heat increment that contributed 35.34 to 37.85% of ME intake was not influenced by experimental diets (p>0.05) when expressed as Mcal/kg of DM feed intake. Lighting increased the HP in hens in an fed-state. The FHP decreased over time (p<0.05) with the lowest value determined on the third day of starvation. No significant difference between treatments was found on FHP of d 3 (p>0.05). The estimated AME, AMEn, and NE values were 3.46, 3.44 and 2.25 Mcal/kg DM for corn, 3.11, 2.79, and 1.80 Mcal/kg DM for DDGS, 2.14, 2.10, and 1.14 Mcal/kg DM for WB, respectively. The net availability of AME of corn tended to be numerically higher than DDGS and WB (p = 0.096). In conclusion, compared with corn, the energy values of DDGS and WB were overestimated when expressed on an AME basis.
机译：本研究的目的是基于间接量热法和氮平衡测量法，估算蛋鸡的玉米，干馏物含可溶物（DDGS）和麦麸（WB）的NE值。随机将576头28周龄的矮粉红色带壳蛋鸡分配给四组，分别饲喂基础饮食（BD）或BD与50％玉米或20％DDGS或20％WB的组合，其中四只复制每个。经过7天的适应期后，将每只重复繁殖的36头母鸡放在两个呼吸室之一中，以测量喂养期间和随后3天禁食期间6天的产热量（HP）。平衡禁食BP（FHP）提供了NE维护需求（NEm）的估计值。使用差异法估算测试饲料的NE值。结果表明，以麦卡尔/千克DM饲料摄入量表示时，贡献35.34至37.85％的ME摄入的热量增量不受实验饮食的影响（p> 0.05）。光照增加了母鸡在饲喂状态下的HP。 FHP随时间下降（p <0.05），最低值在饥饿的第三天确定。在d 3的FHP上，治疗之间无显着差异（p> 0.05）。玉米的AME，AMEn和NE的估计值分别为3.46、3.44和2.25 Mcal / kg DM，DDGS的估计值为9.11、2.79和1.80 Mcal / kg DM，WB分别为2.14、2.10和1.14 Mcal / kg DM。玉米AME的净可用量往往在数值上高于DDGS和WB（p = 0.096）。总之，与玉米相比，当以AME为基准表示时，DDGS和WB的能量值被高估了。

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