Thermal analysis could rapidly and easily predict nutritional value of ruminant feeds. The hypothesis is that crambe meal (CM) has a quality similar to that of soybean meal (SM), and the objective of this study was to determine the nutritional characteristics of CM and compare them to those of SM. CM had greater concentrations of phytic acid (26.3 vs. 16.0 g/kg) and phenol compounds (615 vs. 393 mg gallic acid (GAE)/kg) than SM. In vitro dry matter (DM) digestibility was lower for CM than SM (752 vs. 975 g/kg DM). Cumulative in vitro gas production at 48 h of incubation (14.1 vs. 19.4 mL/100 mg substrate DM), and energy release (4.5 vs. 5.7 kJ/g substrate DM) were lower for CM than SM. CM had a higher concentration of low digestible fiber, hence degradability of DM was lower and the proportion of indigestible fraction was greater for CM than SM. High concentrations of indigestible compounds were likely responsible for lower gas production of CM compared to SM. These results suggest CM quality is lower than that of SM and that thermal analysis is a useful tool to precisely determine the nutritive value of oilseed residues.

中文翻译：

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生物燃料工业中油籽残渣的热分解、化学成分、体外消化率和气体产生以及原位降解性。


热分析可以快速、轻松地预测反刍动物饲料的营养价值。假设海甘蓝粉 (CM) 的品质与豆粕 (SM) 相似，本研究的目的是确定 CM 的营养特性并将其与 SM 的营养特性进行比较。 CM 比 SM 具有更高浓度的植酸（26.3 与 16.0 g/kg）和酚化合物（615 与 393 mg 没食子酸 (GAE)/kg）。 CM 的体外干物质 (DM) 消化率低于 SM（752 g/kg DM 与 975 g/kg DM）。培养 48 小时时，CM 的体外累积气体产生量（14.1 vs. 19.4 mL/100 mg 底物 DM）和能量释放（4.5 vs. 5.7 kJ/g 底物 DM）均低于 SM。 CM 的低易消化纤维浓度较高，因此 DM 的降解性较低，且 CM 的难消化部分比例高于 SM。与 SM 相比，高浓度的难消化化合物可能是 CM 产气量较低的原因。这些结果表明，CM 质量低于 SM，并且热分析是精确确定油籽残渣营养价值的有用工具。