PLANT-BASED INGREDIENTS
The use of high-protein corn fermentation products in the diet of rainbow trout Scott Tilton, Julia Green, John Hagios, The Andersons, Inc.
Global farmed trout production continues to grow, with rainbow trout (Oncorhynchus mykiss) leading the way. It is estimated that world production of rainbow trout was 959.6 thousand tons in 2020 (FAO, 2022), making it the second-largest farmed salmonid species. Rainbow trout is a carnivorous fish species that requires high levels of both protein and lipid, with commercial diets commonly containing 40-45% protein and 14-25% lipid depending on the stage of production and performance objectives. Historically, these diets have relied heavily on fishmeal as their primary protein
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source; however, recent research has focused on reducing or eliminating fishmeal from feed formulations to make trout diets more sustainable. Recently, the U.S. ethanol biorefinery industry has started to evolve, creating novel protein products ranging in protein contents from 40% to 60% on an as-fed basis. These products are corn protein-based, and most contain significant amounts of protein from the spent yeast (Saccharomyces cerevisiae) used in the fermentation process. To date, there are at least four different technology suppliers and six different high
Aquafeed: Advances in Processing & Formulation Vol 15 Issue 2 2023