首页> 外文期刊>Tropical Science >Intraspecific differences in ash, crude protein contents and protein precipitation activity of extractable tannins from Nepalese fodder trees.
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Intraspecific differences in ash, crude protein contents and protein precipitation activity of extractable tannins from Nepalese fodder trees.

机译:尼泊尔饲料树中可提取的单宁的灰分,粗蛋白含量和蛋白沉淀活性的种内差异。

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摘要

Leaves of different ages and from different positions on 3 trees each of Artocarpus lakoocha and Quercus semecarpifolia were sampled in November, January and March 1990-91 and analysed for ash, crude protein and protein precipitation activity of extractable tannins. Much of the variation within species related to leaf age and position appeared to be random in nature. Protein contents generally fell and ash contents rose over the period, but the trend was generally not statistically significant (P>0.05). Some significant (P<0.05) tree-to-tree differences were found in these components. Variability in leaf protein precipitation activity was significant (P<0.05) within trees, between trees and between bimonthly samples. Significant (P<0.05) within-tree differences were found in fresh leaf samples of Q. semecarpifolia and Ficus glaberrima, but not Castanopsis tribuloides. Intraspecific differences in chemical composition may complicate the assessment of the nutritive value of tree leaf fodders.
机译:在1990-91年11月,1月和3月,分别对不同的年龄和不同位置的3棵树的叶进行了取样,分析了灰分,粗蛋白和可提取单宁的蛋白质沉淀活性。物种内部与叶龄和位置有关的许多变化在性质上似乎是随机的。在此期间,蛋白质含量普遍下降而灰分含量上升,但趋势通常无统计学意义(P> 0.05)。在这些组件中发现了一些显着的(P <0.05)树到树差异。树木内部,树木之间以及每两个月的样本之间,叶片蛋白质沉淀活性的变化显着(P <0.05)。树皮中的Q. semecarpifolia和Ficus glaberrima的新鲜叶片样品中有显着(P <0.05)的树内差异,但没有锥角Cast。种内化学成分的差异可能会使对树木饲料营养价值的评估复杂化。

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