NEW PLANT-BASED INGREDIENTS
A novel canola protein concentrate for aquaculture Andre Dumas, AD Aquaculture Nutrition Services Inc., William Riley, WWR & Associates, David Dzisiak, Botaneco Inc., John Brennan, JBW Nutrition Consulting Inc.
Continued expansion of aquaculture production is driving the demand for new sources of sustainable, nutritious, and cost-effective protein. Canola (oilseed rape) is the second largest oilseed grown globally after soybean, with crop production mainly located in Canada, northern Europe, and Australia. Over 50 MM mt is produced annually, containing over 10 MM mt of high-quality protein. This makes canola highly available on a global scale, and it provides one of the most balanced amino acid compositions among plant-based protein sources. Historically, inclusion rates of canola protein in salmonid diets were limited due to the presence of antinutritional factors that reduced feed intake and growth. Botaneco has developed a novel aqueous process for canola that allows for the high concentration of protein (75%) and the removal of the anti-nutritional factors. Alofin™ canola protein concentrate is manufactured using new production technologies, different from traditional oilseed processing, delivering a clean and highly palatable protein ingredient. A series of nutritional studies were conducted to estimate nutrient digestibility in fresh and saltwater and assess the long-term efficacy of Botaneco’s Alofin canola protein concentrate (Table 1) in the diets of Atlantic salmon. These studies were conducted at the Center for Aquaculture Technologies, Prince Edward Island, Canada.
Nutrient digestibility with pre-smolt salmon Atlantic salmon (mean initial body weight = 57.3±6.7g) were hand-fed four digestibility diets containing different ratios of a Reference diet (51.2% crude protein; 19.1% crude lipid; dry matter basis) to Botaneco’s Alofin canola protein concentrate: Diet A served as the Reference diet and contained no Alofin; Diet A was
diluted with 10, 20 and 30% Alofin to create test diets B (Alofin 10), C (Alofin 20) and D (Alofin 30), respectively. Each diet was randomly allocated to three 100-L digestibility tanks in recirculating aquaculture system (RAS) in freshwater, and feces were collected daily by
Aquafeed: Advances in Processing & Formulation Vol 15 Issue 2 2023
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