Sainfoin (Onobrychis viciifolia), a perennial legume, is increasingly recognized for its role in sustainable ruminant nutrition due to its high protein content, condensed tannins, and ecological benefits. This article provides a comprehensive analysis of sainfoin’s contributions to livestock production, comparing its nutritional, agronomic, and environmental attributes with alfalfa (Medicago sativa), barley (Hordeum vulgare), wheat (Triticum aestivum), and maize (Zea mays). Drawing on 80 peer-reviewed studies from 2020-2025, the study evaluates sainfoin’s impact on protein utilization, gastrointestinal parasite control, methane emission reduction, soil health, and biodiversity. Sainfoin’s condensed tannins enhance nitrogen efficiency by 25-30%, reduce parasite loads by 45-50%, and lower methane emissions by 20-23%, outperforming alfalfa’s bloat-prone profile and the high-input requirements of cereal crops. Its nitrogen fixation (100-150 kg N/ha/year) and drought tolerance (300-500 mm/year water) reduce fertilizer needs by 30-40% and support marginal lands, while its flowers boost pollinator populations by 20%. A detailed comparative analysis highlights sainfoin’s advantages, such as reduced feed costs (15-20%) and enhanced ecosystem services, alongside limitations like low seed yield (0.5-1.0 t/ha). The study explores sainfoin’s applications in grazing, silage, and crop rotations, offering practical recommendations for its integration into sustainable farming systems. By addressing research gaps, including breeding for higher yields and adaptability to acidic soils, this article underscores sainfoin’s potential to address global challenges in food security, climate change, and environmental sustainability, providing actionable insights for farmers, researchers, and policymakers.
Yeniçeri et al. (Sat,) studied this question.
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