Harvest regimes may change the nutritive herbage value of tropical legumes depending on growth habit and regrowth capability.

This study aimed to compare the nutritive values of butterfly pea herb (Clitoria ternatea L.) to the sub-shrub stylo cv. Campo Grande (Stylosanthes capitata Vog. × Stylosanthes macrocephala M. B. Ferr. & N. S. Costa) and shrub hedge lucerne (Desmanthus pernambucanus (L.) Thellung) harvested at 60 and 90-day regrowth.

The trial used a randomised complete block design with a split-plot arrangement and four replicates. Leaves and stems were collected in the rainy seasons of 2019 and 2020 and analysed for chemical-bromatological composition and digestibility.

Higher crude protein contents were observed in butterfly pea (233 g/kg) than in stylo leaves (179 g/kg). Elevated proportions of insoluble fractions of carbohydrates (259 g/kg) and proteins (137 g/kg) were found in hedge lucerne leaves, also extremely high levels of condensed tannins (303 g/kg). High levels of dry matter digestibility were found in stylo (788 g/kg) and butterfly pea leaves (774 g/kg). The harvest frequencies changed the nutritive values inconsistently.

The butterfly pea herb and the sub-shrub stylo cv. Campo Grande can be managed under varied harvest frequencies without changing the nutritional value significantly. Prolonged harvest intervals must be avoided in hedge lucerne management for animal feeding because of its high contents of secondary metabolites.

This study restated the already-known nutritional variations among tropical legumes due to different growth habits and revealed a significant presence of condensed tannins in hedge lucerne’s leaves.

根据生长习性和再生能力，收获制度可能会改变热带豆科植物的营养草本价值。

本研究旨在比较蝴蝶豌豆草本植物 ( Clitoria ternatea L.) 与亚灌木花柱 cv. 的营养价值。Campo Grande ( Stylosanthes headata Vog. ×  Stylosanthes macrocephala MB Ferr. & NS Costa) 和灌木篱苜蓿 ( Desmanthus pernambucanus (L.) Thellung) 在再生 60 天和 90 天时收获。

该试验采用随机完整区组设计，具有裂区排列和四次重复。在 2019 年和 2020 年雨季收集叶子和茎，并分析化学-食品成分和消化率。

蝴蝶豌豆 (233 g/kg) 的粗蛋白含量高于花柱叶 (179 g/kg)。在苜蓿叶子中发现碳水化合物（259克/千克）和蛋白质（137克/千克）的不溶性部分比例升高，缩合单宁（303克/千克）的含量也极高。柱茎 (788 克/千克) 和蝶豆叶 (774 克/千克) 具有高水平的干物质消化率。收获频率不一致地改变了营养价值。

蝴蝶豌豆草本植物和亚灌木花柱 cv. 大坎普可以在不同的收获频率下进行管理，而不会显着改变营养价值。由于其次生代谢物含量高，在用于动物饲养的对冲苜蓿管理中必须避免延长收获间隔。

这项研究重申了已知的热带豆类由于不同的生长习性而存在的营养差异，并揭示了苜蓿叶子中存在大量的浓缩单宁。