Macaulay, Georgia
- Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences
Abstract
Waste feed remains a major issue in open sea-cage Atlantic salmon aquaculture. "Echofeeding" is an appetite-led feeding method that stops meals based on fish biomass detected by an echo sounder. The method reduced waste feed and upheld fish growth in a relatively vertically unstratified coastal farming environment. Here, we tested echofeeding at a commercially relevant scale over an 8-month period in a fjord environment with seasonal vertical temperature and salinity gradients. We compared fish behaviour and growth between echofed fish, fed at high intensity and near surface, and control fish, with feeding regulated by pellet detection without surface feeding restriction (conventional practice). Growth (SGR>1.81) and FCR (
Keywords
Aquaculture; Pellet; Salmo salar; Sea-cage; Temperature
Published in
Aquacultural Engineering
2025, volume: 111, article number: 102565
Publisher: ELSEVIER SCI LTD
SLU Authors
UKÄ Subject classification
Fish and Aquacultural Science
Publication identifier
- DOI: https://doi.org/10.1016/j.aquaeng.2025.102565
Permanent link to this page (URI)
https://res.slu.se/id/publ/142079