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Abstract

How the daily feed ration is presented is an important aspect of feed management. In order to evaluate the effects of delivery rate and pellet size, Atlantic salmon (Salmo salar L.) were raised in small (5 x 5 x 10 m), semi-commercial cages and were fed using 14 combinations of pellet sizes (0.03-2.68 g) and delivery rates (82.5-1320 g(.)min(-1) (0.1-31.1 pellets(.)fish(-1.)min(-1))). Treatment groups were compared using the growth rate (Thermal Unit Growth Coefficient, TGC). No significant linear effect on growth due to pellet size or delivery rate could be detected. For pellet size, however, indications point to a non-linear relationship with growth rate. Salmon grew well (mean TGC ( +/- S.D.)= 2.68 +/- 0.49) irrespective of treatment indicating a high level of plasticity in the salmon's ability to adjust to changes in pellet size and delivery rates within the ranges used and under the conditions tested here. (C) 2003 Elsevier Science B.V. All rights reserved

Keywords

Feeding intensity; Feed delivery rate; pellet size; feed management; Salmo salar; Atlantic salmon

Published in

Aquaculture
2003, volume: 224, number: 1-4, pages: 79-88
Publisher: ELSEVIER SCIENCE BV

SLU Authors

  • Bailey, Jason

    • Department of Aquaculture, Swedish University of Agricultural Sciences

  • Alanärä, Anders

    • Department of Aquaculture, Swedish University of Agricultural Sciences

UKÄ Subject classification

Fish and Aquacultural Science

Publication identifier

  • DOI: https://doi.org/10.1016/S0044-8486(03)00208-4

Permanent link to this page (URI)

https://res.slu.se/id/publ/2626