aquaculture water Articles | Agriculture XPRT

Measurement of the amount of DissolvedOxygen

Dissolved Oxygen (DO) is the term used for the measurement of the amount of oxygen dissolved in a unit volume of water. In water quality applications, such as aquaculture (including fish farming) and waste water treatment, the level of DO must be kept high. For aquaculture if the DO level falls too low the fish will suffocate. In sewage treatment, bacteria decompose the solids. If the DO ...

Nov. 10, 2014

By Delta OHM - member of the GHM GROUP

Processing and Application of Floating and Sinking Fish Feed

In virtue of mature processing technology and unique advantages in fish farming, extruded floating and sinking fish feed has become the most ideal fish feed in modern aquaculture industry. With the further development of fish farming industry, extruded fish feeds have obtained more and more wide applications in virtue of unique advantages including high nutrient, good palatability, strong ...

Sep. 6, 2017

By Fanway Fish Feed Machinery

Development of new methods to assess invertebrate immunology and immunotoxicology in aquaculture: oysters and lobsters as examples

In order to support healthy aquaculture, we developed assays to assess immune functions and their susceptibility to environmental conditions or toxicants. Flow cytometry allowed the rapid and quantitative analysis of oyster and lobster cell subpopulations and their functions (phagocytosis, peroxide production, natural killer cell-like activity and apoptosis). We demonstrated experimentally that ...

Sep. 30, 2008

By Inderscience Publishers

Simulations of nutrient emissions from a net cage aquaculture system in a Brazilian bay

Hydrodynamics and transport simulations were conducted with the modeling software TELEMAC-2D on Icó-Mandantes bay, a branch of the Itaparica reservoir. The bay has a maximal operational water level amplitude of 5 m and is suffering from eutrophication and algae bloom. Therefore, we investigated low and high water level scenarios with two different high resolution meshes, with the purpose to ...

Feb. 24, 2016

By IWA Publishing

Biological water treatment in aquaculture by means of “Mutag BioChip™ RAS Process“

Aquaculture or fish farming means the artificial breeding and raising of aquatic creatures. They include fish as well as crustaceans and shellfish, which are raised and stocked under controlled conditions by using techniques and technologies offering an increased level of productivity which cannot be realized under natural conditions. Due to the increased demand for freshly caught fish and ...

Aug. 4, 2016

By Multi Umwelttechnologie AG

A conceptual framework for the sustainability assessment procedures of the shrimp aquaculture industry in coastal Bangladesh

Shrimp aquaculture is now establishing itself as an important aquaculture industry in coastal Bangladesh. However, the benefit of this industry is concentrated to only the interests of a specific group of people who contribute a significant amount of foreign earnings to the nation, while the present development process is posing a challenge to the coastal sustainability, as well as the industry ...

Mar. 7, 2006

By Inderscience Publishers

Aquaculture Facilities As A Potential Source Of Antibiotic Resistance To The Aquatic Environment

The development and proliferation of antibiotic resistance in pathogenic, commensal, and environmental microorganisms is a major public health concern. The extent to which human activities contribute to the maintenance of environmental reservoirs of antibiotic resistance is poorly understood. Aquaculture facilities are one possible source of resistance to the environment because of their ...

Oct. 12, 2007

By Water Environment Federation (WEF)

Water budgets for freshwater fish ponds of Andhra Pradesh, Orissa and West Bengal, India

The water budgets for some aquaculture systems in three states viz. Andhra Pradesh, Orissa and West Bengal were determined in the present study. The average evaporation and seepage loss from the aquaculture ponds throughout the year in Cuttack, Kendrapara, Jajpur, and Puri districts of Orissa were 164 ± 8.3 and 73 ± 16.5 cm, respectively; 152 ± 10 and 90 ± 16 cm, respectively, in South and ...

Nov. 14, 2016

By IWA Publishing

Nutrient-Balance Modeling as a Tool for Environmental Management in Aquaculture: The Case of Trout Farming in France

The control and prevention of nutrient pollution from fish farming plays an essential role in the French regulatory framework. Assessing nutrient emissions from fish farms is important in terms of farm authorization, taxation, and monitoring. Currently employed strategies involve both water sampling and empirical modeling. This article reports the work and outcomes of an expert panel that ...

Jan. 31, 2005

By Springer

Fish farming at Kontiolahti

At Kontiolahti Fish farm the cuttings of salmon, trout and rainbow trout are cultivated to juveniles. Spawn is hatched and the juveniles of 0+ age-class are farmed inside. The older juveniles are farmed outside in surface basins. The water flow is 100-170 l/s depending on the season. Situation in the beginning The oxygen rate of the becoming water to the farm was not enough time to time, ...

Nov. 27, 2009

By W-Rix Ltd

Pilot scale testing of advanced oxidation processes for degradation of geosmin and MIB in recirculated aquaculture

The presence of geosmin and 2-methylisoborneol (MIB) in recirculated aquaculture systems has a significant negative impact on the fish production due to poor flavour quality of produced fish and increased risk of rejection by fish processers. Advanced Oxidation Processes has a high potential for removal of geosmin and MIB in water and in this study UV/H2O2 and UV/O3 has been tested in pilot scale ...

Mar. 31, 2010

By IWA Publishing

Modifications of macrobenthos assemblages on land–based fish farm phytotreatment basins in the Orbetello lagoon

In the Orbetello lagoon basin there are some intensive land–based fish–farming facilities which contribute to cause a significant cyclic development of the opportunistic chorophycea Ulva laetevirens, and consequent serious decay events in spring and summer. To minimise the nutrients' impact, fish farming was supplied with phytotreatment system. The purpose of this study was to ...

Feb. 8, 2015

By Inderscience Publishers

Utilization of inland saline water for <italic>Spirulina</italic> cultivation

Utilization of inland saline water for Spirulina cultivation

An attempt was made to assess the suitability of the inland saline water of Rohtak (Haryana) for mass cultivation of Spirulina platensis, a salt loving cyanobacterium. Cultivation of S. platensis was performed in indoor and outdoor culture units. The investigation revealed that the yield of biomass in de-calcified inland saline water was comparable to the yield obtained in ...

Nov. 19, 2013

By IWA Publishing

Aquaculture induced erosion of tropical coastlines throws coastal communities back into poverty

Shallow tropical coastlines harbour unique mangrove ecosystems, which support livelihoods and provide a natural barrier against coastal flooding. Non-sustainable land-use practices, such as large-scale clear cutting of mangroves for aquaculture, ground water withdrawal and alteration of river flows, result in rapid subsidence. The collapse of aquaculture production, due to pollution and disease, ...

Sep. 30, 2015

By Wetlands International

Model of an aquaponic system for minimised water, energy and nitrogen requirements

Water and nutrient savings can be established by coupling water streams between interacting processes. Wastewater from production processes contains nutrients like nitrogen (N), which can and should be recycled in order to meet future regulatory discharge demands. Optimisation of interacting water systems is a complex task. An effective way of understanding, analysing and optimising such ...

Mar. 23, 2016

By IWA Publishing

Massive freshwater gains from producing food at sea

Water scarcity may be the most limiting factor to increasing world food production. Irrigation water is already overdrawn beyond sustainable levels and to increase reliance on rainfed agriculture is risky, even more so with climate change. However, to promote deliberate food production at sea, both fished and farmed, and both plant and animal, requires no freshwater or land. The thousands of ...

Dec. 31, 2010

By IWA Publishing

What Types Of Fish You Can Farm in Nigeria

Fish farming a profitable business in Nigeria, let’s now proceed to decide which specie of fish we want to farm. Below are some of the most popular fish species that is suitable for Aquaculture. 1. Catfish Even though Catfish is not the most popular fish in Nigeria, this fish species is by far ...

Apr. 22, 2019

By Henan Sunwit Industry Co., Ltd

A novel growth method for diatom algae in aquaculture waste water for natural food development and nutrient removal

Diatom algae are known to play an important role as primary producers in many diverse ecosystems, including artificial aquaculture ponds where they also aid in maintaining water quality by consuming excess nutrients. But factors influencing their growth are still poorly understood. In the present study the effect of micronutrients, N:P ratio and silica concentration on benthic diatom Synedra ...

Mar. 15, 2017

By IWA Publishing

Underwater Unmanned Aerial Vehicle-Future of Marine Fisheries

First of all, there is huge market space for underwater drone. In terms of Fisheries and aquaculture, China's aquaculture area is 8465,000 hectares, of which 27.38% is mariculture area and 72.62% is freshwater aquaculture area. There are 32,000 aquaculture farms in China, covering an area of 10 million hectares. It is necessary to check the temperature, salinity, PH value, dissolved oxygen of ...

Apr. 24, 2019

By Shenzhen QYSEA Technology Co., LTD

Ecological impacts of fluridone and copper sulphate in catfish aquaculture ponds

Fluridone and copper sulphate are often used for controlling macrophytes and algae in aquaculture ponds. The present study examined the ecological effects of these chemicals on macrophyte, phytoplankton, and zooplankton biomass, plankton community structure, water quality parameters, and fish survival and yield in catfish culture ponds using a randomized complete block design. The estimated ...

Sep. 22, 2015

By John Wiley & Sons, Ltd.

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