Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 1/3/2020
Publication Date: N/A
Technical Abstract: Soybean meal has had limited inclusion in aquafeeds for marine carnivorous finfish due to the presence of anti-nutritional factors and effects on the GI tract. The chosen varieties were selected based on relatively high protein levels, low quantities of anti-nutritional factors (ANFs), and agronomic performance. For these studies, candidate soy varieties were selected based on two preliminary feeding trials conducted for 6 weeks on first feeding Atlantic salmon, Salmo salar. In the fry study, final average weight (1.18g-1.29g) and percent increase (225%-343%) did not significantly vary, however survival was greater for some varieties compared to others (60%-95%). The best preforming cultivars were evaluated in a 16-week smolt feeding trial. Most performance indicators were not significantly different (weight gain, specific growth rate, final average weight). Only hepatosomatic index was significantly P < 0.05 different (1.00 to 1.45). Based on results from this study the assertion can be made that these soy cultivars can be incorporated into the salmon diet up to 20% without significant performance differences compared to a fishmeal-based diet.