Summary
This narrative review examines the consequences of lowering crude protein content in swine diets across productive, physiological, and environmental domains. The authors synthesise evidence on how protein reduction strategies affect growth rates, nutrient utilisation, and environmental outputs including nitrogen excretion and gaseous emissions. The review likely concludes that moderate protein reduction, when balanced with amino acid supplementation, can improve environmental sustainability whilst maintaining production performance.
UK applicability
The findings are relevant to UK pig producers seeking to reduce feed costs and environmental impact whilst meeting nutrient requirements. UK legislation on ammonia emissions and nutrient management on farms makes evidence on protein reduction strategies particularly applicable to regulatory compliance.
Key measures
Growth performance, feed conversion efficiency, nitrogen balance, ammonia and methane emissions, carcass composition, immune function, gut health indicators
Outcomes reported
The review synthesises evidence on the productive, physiological, and environmental impacts of reducing dietary crude protein in swine production systems. It likely examines trade-offs between animal performance, health outcomes, nutrient excretion, and greenhouse gas emissions.
Topic tags
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