Harnessing Bioactive‐Rich Forage Species in Multi‐Species Grasslands: Where Do We Stand? Challenges and Future Perspectives

ABSTRACT

The integration of bioactive‐rich forage species into multi‐species grassland systems represents a promising strategy to enhance ruminant productivity and mitigate environmental impacts. Plant secondary metabolites (PSMs) provide a range of biofunctional properties, including the reduction of enteric methane (CH ₄ ) emissions, urinary nitrogen excretion and parasite burdens. However, effective implementation in real‐world grazing systems is constrained by high variability and often marginal concentrations of active compounds, as well as limited knowledge and control over the functional doses required for consistent biological effects. This article highlights these major challenges and discusses strategies such as promoting agroecological diversity, introducing exotic or aromatic species and developing monitoring tools and breeding approaches for stable bioactive traits. A holistic, transdisciplinary approach, bridging plant ecology, animal nutrition and farming practices, is essential to unlock the full potential of bioactive‐rich forages for climate‐smart and sustainable livestock systems.