Resource efficiency in practice: from sugar beet waste to fish feed ingredient (Starfish) (39368)

Project Details


Sugar beet is a commonly cultivated crop in Denmark and the waste pulp is primarily sold as cow feed. The pulp, however, contains a potential prebiotic compound (pectin) that, if added to fish feed at low concentrations is hypothesized to:
1. improve the feed utilisation by the fish allowing more fish to be produced per amount of feed applied
2. stabilize the structure of the faecal waste so that it may be easier collected and removed reducing the discharge of nitrogen- and phosphorous
3. improve the overall immunological system/health status of the fish whereby the use of medicine and therapeutics may be reduced. 

The objective of the project is to test these potential, beneficial effects of pectin in rainbow trout (Oncorhynchus mykiss) and tilapia (Oreochromis niloticus) by adding different molecular sizes and concentrations to the feed and measuring the effects on feed utilisation, faecal structure and fish health.

The project is coordinated by DTU Aqua and funded by Ministry of Environment and Food of Denmark through the Green Development and Demonstration Program (GUDP).

Research area: Aquaculture
Effective start/end date01/08/201631/07/2019