膨化干燥大豆及其热处理产品对生长猪的能量营养价值。

Energy content of intact and heat-treated dry extruded-expelled soybean meal fed to growing pigs.

机构信息

Department of Animal Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.

出版信息

J Anim Sci. 2021 Jul 1;99(7). doi: 10.1093/jas/skab131.

DOI:10.1093/jas/skab131

PMID:34043786

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8259834/

Abstract

An experiment was performed to evaluate the energy content of extruded-expelled soybean meal (EESBM) and the effects of heat treatment on energy utilization in growing pigs. Eighteen growing barrows (18.03 ± 0.61 kg initial body weight) were individually housed in metabolism crates and randomly allotted to one of three dietary treatments (six replicates per treatment). The three experimental diets were the following: a corn-soybean meal-based basal diet and two test diets with simple substitution of a basal diet with intact EESBM or heat-treated EESBM (heat-EESBM) at a 7:3 ratio. Intact EESBM was autoclaved at 121 °C for 60 min to make heat-treated EESBM. Pigs were fed the experimental diets for 16 d, including 10 d for adaptation and 6 d for total collection of feces and urine. Pigs were then moved into indirect calorimetry chambers to determine 24-h heat production and 12-h fasting heat production. The energy content of EESBM was calculated using the difference method. Data were analyzed using the Mixed procedure of SAS with the individual pig as the experimental unit. Pigs fed heat-EESBM diets showed lower (P < 0.05) apparent total tract digestibility of dry matter (DM), gross energy, and nitrogen than those fed intact EESBM. A trend (P ≤ 0.10) was observed for greater heat increments in pigs fed intact EESBM than those fed heat-EESBM. This resulted in intact EESBM having greater (P < 0.05) digestible energy (DE) and metabolizable energy (ME) contents than heat-EESBM. However, no difference was observed in net energy (NE) contents between intact EESBM and heat-EESBM, showing a tendency (P ≤ 0.10) toward an increase in NE/ME efficiency in heat-EESBM, but comparable NE contents between intact and heat-EESBM. In conclusion, respective values of DE, ME, and NE are 4,591 kcal/kg, 4,099 kcal/kg, and 3,189 kcal/kg in intact EESBM on a DM basis. It is recommended to use NE values of feedstuffs that are exposed to heat for accurate diet formulation.

摘要

进行了一项实验，以评估膨化挤压大豆粕（EESBM）的能量含量，以及热处理对生长猪能量利用的影响。18 头生长育肥猪（18.03±0.61kg 初始体重）单独饲养在代谢笼中，并随机分配到三种日粮处理中的一种（每种处理 6 个重复）。三种试验日粮如下：以玉米-豆粕为基础日粮和两种试验日粮，基础日粮简单替代完整 EESBM 或热处理 EESBM（热 EESBM），比例为 7:3。完整的 EESBM 在 121°C 下高压灭菌 60 分钟，制成热处理的 EESBM。猪饲喂试验日粮 16 天，包括 10 天适应期和 6 天粪便和尿液总收集期。然后将猪转移到间接测热室中，以确定 24 小时产热量和 12 小时空腹产热量。EESBM 的能量含量使用差值法计算。数据采用 SAS 的混合程序进行分析，以个体猪为实验单位。饲喂热 EESBM 日粮的猪的干物质（DM）、总能和氮的表观全肠道消化率较低（P<0.05）。饲喂完整 EESBM 的猪的热增耗呈增加趋势（P≤0.10），高于饲喂热 EESBM 的猪。这导致完整 EESBM 的可消化能（DE）和代谢能（ME）含量高于热 EESBM（P<0.05）。然而，完整 EESBM 和热 EESBM 之间的净能（NE）含量没有差异，热 EESBM 的 NE/ME 效率呈增加趋势（P≤0.10），但完整 EESBM 和热 EESBM 之间的 NE 含量相当。总之，以 DM 为基础，完整 EESBM 的 DE、ME 和 NE 值分别为 4591kcal/kg、4099kcal/kg 和 3189kcal/kg。建议在准确的日粮配方中使用受热的饲料原料的 NE 值。