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Johan A.J. Verreth

Researcher at Wageningen University and Research Centre

Publications -  255
Citations -  10180

Johan A.J. Verreth is an academic researcher from Wageningen University and Research Centre. The author has contributed to research in topics: Clarias gariepinus & Catfish. The author has an hindex of 51, co-authored 251 publications receiving 8768 citations.

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Effect of dietary protein to energy ratio, stocking density and feeding level on performance of Nile tilapia in pond aquaculture

TL;DR: Lowering P:E ratio enhanced tilapia production and pond nutrient utilization and economic benefit under two stocking densities and feeding levels in an on-farm trial.
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Water Flow Affects Zooplankton Feeding by the Scleractinian Coral Galaxea fascicularis on a Polyp and Colony Level

TL;DR: It is demonstrated that water flow affects coral feeding and thus heterotrophic nutrient input at both a polyp and colony level and may serve to optimise coral aquaculture.
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Integration of Algae to Improve Nitrogenous Waste Management in Recirculating Aquaculture Systems: A Review.

TL;DR: An improved understanding of how to manage the algal reactor and technological advancement of culturing algae will increase the practical and economic feasibility of algal integration in RAS, thus improving the potential of mass cultivation of algae in RAs.
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Voluntary Feed Intake in Rainbow Trout Is Regulated by Diet-Induced Differences in Oxygen Use

TL;DR: In this article, the authors investigated the hypothesis that the voluntary feed intake in fish is regulated by diet-induced differences in oxygen use and found that the intake of trout was regulated by the substitution of fat with starch.
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Water exchange rate in RAS and dietary inclusion of micro-minerals influence growth, body composition and mineral metabolism in common carp

TL;DR: Differential regulation in mRNA expression of molecular markers related to micro-mineral uptake, metabolism and oxidative stress were observed in the tissues in response to RAS and premix inclusion, which had multiple effects on the physiology and metabolism of fish on the whole.