在Silvopasture系统中树木豆类的营养价值和缩色素
Izabela Aline Gomes da Silva1, José Carlos Batista Dubeux2, Carla Giselly Souza3
1Federal University of Rondonopolis, Rondonópolis, Brazil.
Scientific reports
|August 5, 2024
概括
热带树豆类 (gliricidia和mimosas) 中的凝结素 (CT) 的季节性变化会影响料质量. 在干旱季节,CT水平下降,当C4草缺乏时,可改善消化能力.
科学领域:
- 农业学是一种农业学.
- 动物科学动物科学
- 植物科学 植物科学
背景情况:
- 将豆类引入热带牧场可以提高可持续性.
- 树木豆类提供了一个替代品,但可以具有高度的凝结素 (CT),降低料质量.
- 关于树木豆类季节性CT变化及其对料质量影响的知识有限.
研究的目的:
- 评估CT的季节性变化和gliricidia和mimoza的反动物的营养价值.
- 了解CT季节性变化如何影响热带牧场的料质量.
主要方法:
- 在巴西进行了一项为期两年的研究,评估了CT,,体外可消化的有机物 (IVDOM) 和叶子同位素 (δ13C, δ15N) 的季节性变化.
- 2017年和2018年,每月从1月到10月进行一次测量.
- 这项研究涉及了与信号草 (Urochloa decumbens) 结合的虫[Gliricidia sepium]和虫[Mimosa caesalpiniifolia].
主要成果:
- 凝结素 (CT) 含量在各类豆类和采样时间之间有显著差异.
- 弥莫萨的CT通常高于gliricidia,两种物种在干旱季开始时都显示CT减少.
- 在体外可消化的有机物 (IVDOM) 受CT的负面影响,随着CT在干旱季节的下降而增加,这与C4草的质量下降相吻合.
结论:
- 树木豆类gliricidia和mimosas表现出季节性CT变化,在干旱季节水平降低.
- 这种季节性降低CT提高了料消化能力,当C4草的质量通常较低时.
- 尽管CT很高,但这些豆类可以增强热带牧场的营养,CT对消化能力的影响因物种而异.
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