Phytate and phytase in fish nutrition
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TLDR
Effects of phytate on fish, dephytinisation processes, phytase and pathway forphytate degradation,phytase production systems, mode ofPhytase application, bioefficacy of phyllase, effects of Phytase on growth performance, nutrient utilization and aquatic environment pollution, and optimum dosage of phydase in fish diets are discussed.Abstract:
Phytate formed during maturation of plant seeds and grains is a common constituent of plant-derived fish feed. Phytate-bound phosphorus (P) is not available to gastric or agastric fish. A major concern about the presence of phytate in the aquafeed is its negative effect on growth performance, nutrient and energy utilization, and mineral uptake. Bound phytate-P, can be effectively converted to available-P by phytase. During the last decade, phytase has been used by aqua feed industries to enhance the growth performance, nutrient utilization and bioavailability of macro and micro minerals in fish and also to reduce the P pollution into the aquatic environment. Phytase activity is highly dependent on the pH of the fish gut. Unlike mammals, fish are either gastric or agastric, and hence, the action of dietary phytase varies from species to species. In comparison to poultry and swine production, the use of phytase in fish feed is still in an unproven stage. This review discusses effects of phytate on fish, dephytinisation processes, phytase and pathway for phytate degradation, phytase production systems, mode of phytase application, bioefficacy of phytase, effects of phytase on growth performance, nutrient utilization and aquatic environment pollution, and optimum dosage of phytase in fish diets.read more
Citations
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Phytase in non-ruminant animal nutrition: a critical review on phytase activities in the gastrointestinal tract and influencing factors.
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References
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Antinutritional factors present in plant-derived alternate fish feed ingredients and their effects in fish
TL;DR: The use of plant-derived materials such as legume seeds, different types of oilseed cake, leaf meals, leaf protein concentrates, and root tuber meals as fish feed ingredients is limited by the presence of a wide variety of antinutritional substances.
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Expanding the utilization of sustainable plant products in aquafeeds: a review
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TL;DR: This document reviews various plant feedstuis, which currently are or potentially may be incorporated into aquafeeds to support the sustainable production of various ¢sh species in aquaculture and strategies and techniques to optimize the nutritional composition and limit potentially adverse eiects of bioactive compounds are described.
Journal ArticleDOI
Phytic acid interactions in food systems
TL;DR: Development of methods for producing low-phytate food products must take into account the nature and extent of the interactions between phytic acid and other food components, such as pH-solubility profiles of the proteins and the cookability of the seeds.
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Implications of antinutritional components in soybean foods
TL;DR: There are a number of components present in soybeans that exert a negative impact on the nutritional quality of the protein and the allergenic response that may sometimes occur in humans, as well as calves and piglets, on dietary exposure to soybeans.
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