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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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Interaction between dissolved oxygen concentration and diet composition on growth, digestibility and intestinal health of Nile tilapia (Oreochromis niloticus)

TL;DR: The study showed that growth was best in the “Control” diet under normoxia, while no interaction between oxygen and diet composition was found and modern aquaculture can benefit from this holistic approach.
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Modification of light utilization for skeletal growth by water flow in the scleractinian coral Galaxea fascicularis

TL;DR: In this paper, the importance of water flow for skeletal growth (rate) becomes higher with increasing irradiance levels (i.e., a synergistic effect) and that such effect is mediated by a water flow modulated effect on net photosynthesis.
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HRT and nutrients affect bacterial communities grown on recirculation aquaculture system effluents

TL;DR: It was concluded from these results that a 6-7 h HRT is recommended, and that the type of substrate is less important, and results in communities with a comparably low pathogenic risk.
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Effect of rainfall and atmospheric temperature on the prevalence of the whitespot syndrome virus in pond‐cultured Penaeus monodon

TL;DR: The authors wish to thank the Government of Japan for funding the study through the Trust Fund awarded to the Aquaculture Department Southeast Asian Fisheries Development Center (SEAFDEC AQD) under study code 8001 T FD FH0206.
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Dietary carbohydrate composition can change waste production and biofilter load in recirculating aquaculture systems

TL;DR: COD/N ratios in the biofilter load and system output can be manipulated by changing dietary carbohydrate composition and it is shown that the increased COD production of HNSP diets could be exploited by using fecal COD as an internal carbon source in denitrification.