Summary
This meta-analysis synthesises findings from peer-reviewed trials on the use of spirulina (Arthrospira spp.) as a dietary supplement in small ruminants, evaluating its impact on productive performance and the nutritional or sensory attributes of derived products. By pooling data across heterogeneous studies, the paper provides quantitative estimates of spirulina's efficacy as a feed additive for sheep and goats. The authors likely identify conditions under which supplementation is most beneficial, along with optimal inclusion rates, though effect magnitudes and confidence intervals should be interpreted with regard to between-study variability.
UK applicability
The findings are broadly applicable to UK small ruminant producers — particularly sheep farmers — who may consider algae-based feed supplements as part of sustainable nutrition strategies; however, adoption would depend on spirulina's commercial availability, cost-competitiveness, and compatibility with UK feed regulations and existing production systems.
Key measures
Average daily gain (g/day); feed conversion ratio; milk yield (kg/day); milk composition (fat, protein, lactose %); meat quality indices; carcass characteristics
Outcomes reported
The meta-analysis examined the effects of spirulina supplementation on growth performance, feed efficiency, and product attributes (such as milk composition and meat quality) in small ruminants including sheep and goats. It synthesised quantitative data across multiple primary studies to estimate pooled effect sizes.
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