Effect of varying concentrations of partially dehulled and extruded sunflower-meal on growth performance and sensory attributes of post-juvenile Atlantic salmon (Salmo salar) ...

• Main Author: Gill, Navneet
• Format: Text
• Language: English
• Published: University of British Columbia 2009
• Subjects: Atlantic salmon; Salmo salar
• Online Access: https://dx.doi.org/10.14288/1.0099616; https://doi.library.ubc.ca/10.14288/1.0099616

Commercially available sunflower meal (SFM) was subjected to extrusion processing and then tail-end dehulling (using multiple vibrating screens) to nutritionally upgrade the protein content to 40.9% on a dry weight basis (db) and improve its digestible energy content. A basal and four test diets were formulated by replacing fishmeal protein in the dietary mix with increasing equal increments of nutritionally upgraded SFM (maximum dietary concentration 27%; db). The resulting five diets (-49% protein and -18.5% lipid; db) were fed to fifteen groups of post-juvenile Atlantic salmon (n=50/group; 3 groups/diet) over an 84-day period. The performance of Atlantic salmon (initial mean weight - 116 g) was judged by the following parameters: weight gain, specific growth rate, feed intake, feed efficiency, protein efficiency ratio, percent protein deposited, gross energy utilization, and percent survival. Also, proximate analyses of both whole bodies and muscle samples (fillets) were undertaken on salmon from day 0 ...