Pulse Brain · Growing Health Evidence Index
Tier 4 — Narrative / commentaryPeer-reviewed

The Piggy Solution: Harnessing Food Waste for Sustainable Hog Farming.

Ogwu MC, Hills CE, Pietrosemoli S.

Glob Chall · 2025

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Summary

This paper explores the potential of utilising food waste streams as a feed resource for pig production, positioning waste valorisation as a pathway to more circular and resource-efficient livestock farming. The authors likely synthesise evidence on the nutritional adequacy, safety considerations and environmental benefits of incorporating food waste into hog diets, whilst considering implementation barriers and practical constraints. The work contributes to understanding how livestock production can function as a waste-reduction mechanism within broader food systems.

UK applicability

UK pig producers face regulatory constraints on food waste feeding (particularly post-animal protein bans), though non-meat food waste presents opportunities. Findings would be applicable where UK legislation permits and within existing certified waste supply chains.

Key measures

Likely measures included feed conversion ratios, hog growth performance, food waste diversion rates, greenhouse gas emissions, land use efficiency, and economic return on investment.

Outcomes reported

The study likely examined the feasibility, environmental impact and economic viability of incorporating food waste into hog diets as a sustainable feed source. Metrics probably included feed conversion efficiency, animal performance, waste reduction and lifecycle emissions compared to conventional feed systems.

Theme
Farming systems, soils & land use
Subject
Circular food systems and livestock waste utilisation
Study type
Narrative Review
Study design
Narrative review
Source type
Peer-reviewed study
Status
Published
System type
Mixed livestock
DOI
10.1002/gch2.202500073
Catalogue ID
NRmo3d4gae-0a4

Topic tags

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