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叶子和茎成熟对Megathyrsus maximus的营养价值的影响

Urys M Hernández Álvarez¹, Eliana López Colomba^2,3, Graciela P Bollati³

¹Plant Genetic Resources Area, Unidad de Estudios Agropecuarios (INTA-CONICET), Córdoba, Argentina.

Journal of the science of food and agriculture

|December 7, 2023

概括

料草Megathyrsus maximus的营养价值受到成熟度和基因型的影响. 绿色恐慌的早期放牧或茎延长管理改善了料质量,特别是在树干上的叶片上.

科学领域:

农业学是一种农业学.
植物科学植物科学
动物营养动物营养

背景情况:

非洲广泛种植的料草 (Megathyrsus maximus) 在热带和亚热带放牧系统中起着至关重要的作用.
了解其营养动态是优化牲畜饮食的关键.

研究的目的:

评估五种M.maximus基因型的形态农学特征,营养成分和消化能力.
在不同的成熟阶段,将叶片和茎解剖与营养价值联系起来.

主要方法:

评估了随着成熟而发生的组织比例变化 (硬质细胞,中粒细胞) 和素含量 (ADL).
测量在saco 干干物质的消失,以确定消化能力.
分析了解剖特征,纤维含量 (NDF,ADL) 和干物质消失之间的相关性.

主要成果:

随着成熟而增加的斯克莱伦基马组织比例;依基因型而异的红素积累.
绿色恐慌茎在植物阶段显示较低的干物质消失.
干物质消失和美索菲尔组织之间存在正相关性,与NDF和ADL负相关性.

结论:

切割年龄和基因型显著影响M. maximus的营养价值,其茎比叶片的叶片减少更多.
建议在绿色恐慌中早期放牧或管理茎延长,以提高料质量.

关键词:

料的质量料的质量草草草草草草红色的线性蛋白质 (lignin) 是一种营养价值营养价值营养价值组织比例组织比例.

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