Potential contribution of Sulla spinosissima subsp. capitata and Sulla pallida as a forage crop in arid Mediterranean regions

作者：Anass El Yemlahi, Abdelhay Arakrak, Amin Laglaoui, Mohammed Ayadi, Ahmed Douaik, Mohammed Bakkali · 发表于：Arid Land Research and Management · 年份：2024 · DOI：10.1080/15324982.2024.2306618 · 被引用次数：4 · 研究领域：Botany and Plant Ecology Studies、Botanical Research and Chemistry、Mediterranean and Iberian flora and fauna

This study evaluated the chemical composition, mineral content, and in vitro dry and organic matter digestibility of two forage legume species from arid pastures in northeastern Morocco, namely S. spinosissima subsp. capitata and S. pallida. This is the first report assessing the nutritive value of these two pasture species. Results revealed a wide variation between selected Sulla species; in particular, the growth stage had a significant effect (P < 0.05) on most chemical traits and digestibility parameters. Comparatively, S. spinosissima had higher organic matter digestibility (72.4 %OM) at the vegetative stage in direct correlation with lower acid detergent fiber (ADF) (24.2 %DM), lower condensed tannin, (CT) (0.27 %DM), and higher crude protein (24 %DM). Conversely, S. pallida plants with a considerable amount of ADF (40.3 %DM) and CT (4.5 %DM) had lower organic matter digestibility (56.1 %OM). Both species are mineral-rich and contain satisfactory mean (g/kgDM) levels of calcium: 23.25 in S. spinosissima and 13.75 in S. pallida, and phosphorus: 1.01 in S. spinosissima and 1.53 in S. pallida. Additionally, chemical analysis of some anti-nutritional factors revealed low concentrations (mg/g) of phytate (0.19), oxalate (0.18), and nitrate (0.21), even at the flowering stage, compared with others pasture plants. The results of the present study suggest the suitability of both Sulla species, particularly S. spinosissima, for domestication to enhance pasture productivity to su...