Summary
This narrative review synthesises evidence on pasture species selection for free-range egg production, integrating literature from poultry science, pasture agronomy, animal behaviour, and soil science. The authors conclude that no single species meets all production, welfare, and soil objectives simultaneously; multi-species pastures combining legumes (Trifolium spp., Medicago sativa), persistent grasses (Lolium perenne, Dactylis glomerata), and broadleaf species (Plantago lanceolata, Cichorium intybus) appear most promising. However, direct poultry-specific evidence remains limited for several species, and outcomes vary substantially with pasture availability, season, genotype, range design, and management practices.
Regional applicability
The review's focus on temperate species suitable for humid temperate conditions suggests direct applicability to United Kingdom free-range and organic egg production systems, where pasture-based management is increasingly mandated by welfare standards. However, the geographic origin of the study is not specified in the metadata; the applicability would be enhanced if confirmed as UK-based or comparative with UK conditions and genotypes.
Key measures
Yolk pigmentation, antioxidant transfer, omega-3 fatty acid enrichment, foraging behaviour, welfare indicators, nutrient cycling, soil compaction, pasture persistence and regrowth, vegetation cover, range utilisation patterns
Outcomes reported
The review evaluated how different pasture species (grasses, legumes, and broadleaf plants) affect laying hen performance, egg quality, animal welfare, and soil functioning in free-range systems. It synthesised evidence on botanical composition, pasture availability, and management strategies to identify species most suitable for integrated production and environmental objectives.
Topic tags
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