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首页> 外文期刊>Journal of the Science of Food and Agriculture >In vitro gas production profile and the formation of end products from non-washable, insoluble washable and soluble washable fractions in some concentrate ingredients.
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In vitro gas production profile and the formation of end products from non-washable, insoluble washable and soluble washable fractions in some concentrate ingredients.

机译:体外气体生产情况以及由某些浓缩成分中的不可洗,不可溶可洗和可溶可洗馏分形成最终产品。

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摘要

A procedure that mimics washing in the in situ incubation technique, combined with an in vitro gas and volatile fatty acids (VFAs) production technique, was used to verify the assumption that rumen degradation behaviour of material washed out of nylon bags is instantaneous and complete. In a 6x4 factorial arrangement of treatments with three replicates, fractions of maize, barley, milo, yellow peas, lupins (a mixture of white and spotted lupins) and round-seeded brown faba beans were subjected to an in vitro incubation technique. Fractions were whole (WHO), non-washable (NWF), insoluble washable (ISWF) and soluble washable (SWF). In a manually operated in vitro fermentation system, another 24 samples of the same substrates were fermented for VFA and ammonia analysis. Except in lupins, ISWF in the concentrate ingredients was very rich in starch. SWF was relatively rich in ash, crude protein, soluble sugars, and a residual unknown fraction but contained only a negligible quantity of starch. Thus, the fermentation characteristics of ISWF were more like WHO and NWF than SWF. Total gas production of SWF was considerably lower than the other fractions. A very rapidly degradable fraction was seen in the first phase of degradation of SWF. The pattern of fermentation end-product formation for SWF differed from that of the other fractions..
机译:模拟原位孵育技术中的洗涤过程,并结合体外气体和挥发性脂肪酸(VFAs)生产技术,用于验证从尼龙袋中洗出的材料的瘤胃降解行为是即时且完整的假设。在6x4因子分解处理中,一式三份,对玉米,大麦,粟,黄豌豆,羽扇豆(白色和有斑点羽扇豆的混合物)和圆种子棕色蚕豆的一部分进行体外孵育技术。级分是完整的(WHO),不可洗的(NWF),不溶的可洗(ISWF)和可溶的可洗(SWF)。在手动操作的体外发酵系统中,将相同底物的另外24个样品发酵进行VFA和氨气分析。除羽扇豆外,浓缩成分中的ISWF淀粉含量很高。 SWF的灰分,粗蛋白,可溶性糖和残留的未知馏分相对丰富,但淀粉含量可忽略不计。因此,ISWF的发酵特性比SWF更像WHO和NWF。 SWF的总产气量明显低于其他馏分。在SWF降解的第一阶段,观察到非常迅速的降解部分。 SWF的发酵终产物形成模式与其他馏分不同。

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