Sammanfattning

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

Nyckelord

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

Publicerad i

Aquaculture
2003, Volym: 224, nummer: 1-4, sidor: 79-88
Utgivare: ELSEVIER SCIENCE BV

SLU författare

• Bailey, Jason

  • Institutionen för vattenbruk, Sveriges lantbruksuniversitet
    

• Alanärä, Anders

  • Institutionen för vattenbruk, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Fisk- och akvakulturforskning


Publikationens identifierare

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

Permanent länk till denna sida (URI)

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