Nutrition & Health

Abalone Feed Requirements

Table of Contents

Scope of Document

Biological Overview of Ormer Feed Requirements

Seaweed Preferences

Seaweed Nutrition

Seaweed Feed Requirements

Seaweed Sources

Seaweed Drift Collection

Seaweed –Harvesting 

Kelp Biomass

Kelp Depth and Extent

Seaweed Regeneration / Fallow Period

Seaweed Canopy as a Habitat

Seaweed Holdfasts as a Habitat and the Choice of Harvesting Methods 

Seaweed – Culture

Seaweed Culture Optimised For Production

Seaweed Culture Optimised For Nutrient Scrubbing

Seaweed Culture Problems 

Seaweed – Storage

Artificial Feed Sources

Artificial Diets - Benefits

Artificial Diets - Concerns

Artificial Diets - Sources

Feed Selection

Site Specific Considerations

Legislative Considerations

Market Considerations

Isles of Scilly SAC – St Martins Case Study

Kelp Biomass

Seaweed Regeneration / Fallow Period

Seaweed Canopy as a Habitat

Seaweed Holdfast as a Habitat and Harvesting Method

Seaweed Drift Collection

Fal and Helford SAC – Porthkerris Case Study

Seaweed Harvesting

Seaweed Drift Collection

Seaweed Culture

Artificial Feeds




Andy FitzGerald, Southwest Abalone Growers Association



Final report for SEAFISH (

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