Dephytinization of two soy proteins increases phosphorus and protein utilization by rainbow trout, Oncorhynchus mykiss

By J. Vielma, K. Ruohonen, M. Peisker. 2002

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Application of microbial phytase in fish feed (2007, methodology): “[22] reported dephytinization had a positive effect on weight gain, feed efficiency and on protein, P, calcium, magnesium and zinc utilization.”
Effects of pretreatment with microbial phytase on phosphorous utilization and growth performance of Nile tilapia (Oreochromis niloticus) (2008, methodology): “1999), and salmon and rainbow trout fed the diets with phytase pretreated ingredients (Cain & Garling 1995; Vielma et al. 2002).”
Effects of phytase pretreatment of soybean meal and phytase-sprayed in diets on growth, apparent digestibility coefficient and nutrient excretion of rainbow trout (Oncorhynchus mykiss Walbaum) (2009, background): “... demonstrated that the addition of phytase in the diet has the potential to improve the digestibility of nutrients and minerals (Cheng and Hardy 2003; Yoo et al. 2005), and the feed conversion efficiency and growth (Sajjadi and Carter 2004; Schafer et al. 1995; Rodehutscord and Pfeffer 1995; Viel”
Sustainable Intensification of Aquaculture through Nutrient Recycling and Circular Economies: More Fish, Less Waste, Blue Growth (2021, background): “…and bioavailability of P from vegetablebased feeds can be enhanced through additional phytase enzymes, feed pretreatments (e.g. Dephytinization; Storebakken et al. 1998; Vielma et al. 2002; von Danwitz et al. 2016; Boyd et al. 2020) and organic acid supplementation in diets (Herath and Satoh 2015).”