Summary
This systematic review synthesised peer-reviewed literature (2000–2025) on the chemical composition of ruminant feeds in West Africa, retaining 44 studies that reported quantitative feed composition data. The authors established reference ranges for key nutritional parameters across three feed categories and found substantial compositional variability both within feed types and between studies. The findings support the development of locally adapted feeding strategies and decision-support tools that account for heterogeneity in tropical feed resources, rather than relying on fixed composition values.
Regional applicability
The findings are of limited direct applicability to UK ruminant systems, which differ substantially in feed availability, climate, and management practices. However, the methodological approach to synthesising fragmented feed composition data and establishing reference ranges may inform development of more nuanced UK feed evaluation frameworks that account for seasonal and management-related variability.
Key measures
Chemical composition parameters (protein, fibre, energy content and related nutritional metrics) for agro-industrial by-products, agricultural by-products, and forages
Outcomes reported
The study synthesised chemical composition data from 44 peer-reviewed studies on ruminant feeds in West Africa, calculating descriptive statistics and establishing reference ranges for key nutritional parameters across feed types. Results identified substantial variability in nutrient composition within and across feed categories, with specific findings on protein-rich supplements, legume haulms, and browse species.
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