Open AccessInclusion of camelina meal as a protein source in diets for farmed salmonids
Author(s) -
Hixson S.M.,
Parrish C.C.,
Wells J.S.,
Winkowski E.M.,
Anderson D.M.,
Bullerwell C.N.
Publication year - 2016
Publication title -
aquaculture nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.941
H-Index - 79
eISSN - 1365-2095
pISSN - 1353-5773
DOI - 10.1111/anu.12276
Subject(s) - camelina , salmo , camelina sativa , biology , rainbow trout , fish meal , zoology , meal , aquaculture , trout , salmonidae , feed conversion ratio , food science , composition (language) , fishery , fish <actinopterygii> , body weight , agronomy , crop , endocrinology , linguistics , philosophy
Abstract Camelina meal ( C amelina sativa ) ( CM ) is a potential protein source for aquaculture feeds, on account of its crude protein level (380 g kg −1 ) and inclusion of most indispensable amino acids. Two experiments were conducted with rainbow trout ( O ncorhynchus mykiss ) and Atlantic salmon ( S almo salar ). Rainbow trout (44.9 g fish −1 ) were fed diets with CM at 0 g kg −1 (0% CM ), 70 g kg −1 (7% CM ), 140 g kg −1 (14% CM ) or 210 g kg −1 (21% CM ) for 12 weeks at 14 °C in freshwater, and salmon (241.8 g fish −1 ) were fed diets with CM at 0 g kg −1 (0% CM ), 80 g kg −1 (8% CM ), 160 g kg −1 (16% CM ) or 240 g kg −1 (24% CM ) for 16 weeks at 14 °C in sea water. Growth, lipid and amino acid tissue compositions were compared between species. Trout could tolerate up to 14% CM diets without affecting the growth compared to the control, while salmon fed ≥8% CM gained less weight than the control ( P = 0.008). The feed conversion ratio in trout fed 21% CM was higher than the control ( P = 0.002), and feed intake in salmon fed ≥8% CM was lower than the control ( P = 0.006). Trout fatty acid and amino acid composition showed minimal differences between CM ‐fed and control‐fed fish, while salmon showed significant alterations after feeding CM diets. Multivariate analyses emphasized differences in tissue composition between species fed CM diets.