Asia-Pacific Fishery Commission

The growth of single-cell protein in aquafeed

Category Aquaculture

This review describes the use of feedstock yeasts and bacteria for acquaculture feed, with an emphasis on those sourced from carbon dioxide, ethanol and brewery by-products for their comparatively low costs and sustainability credentials. The scope of application of single-cell protein based feeds and their outcome, are benefits are presented. Aquaculture competes with fish meal use in the diets of swine, poultry and pets, and fish meal production cannot match the growth of all of these industries without jeopardizing forage fish stocks. While fish meal has been partially replaced with ingredients from as soy, this has raised environmental sustainability and fish welfare questions. A number of companies have emerged in the alternative protein sector including producers of proteins from single-cell organisms such as bacteria, yeast and microalgae. Proteins made from single-cell organisms are being produced in growing quantities for aquafeeds. Currently, there are aquafeed producers in Asia, Europe and North America lead this field. A considerable reduction in price and increase in volume will be required before single-cell proteins are widely used by aquafeed producers and aquatic farmers.