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Showing 1 to 20 of 22 for “"fish culture"”.
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Benthic invertebrate management in plastic-lined fish culture ponds
… ponds in place of earthen ponds for fish culture is becoming common among agencies; however limited information is available on their management. Since plastic lining significantly reduces the amount of organic sediment typically found on the bottom of culture ponds there is also a …
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Reproduction in Male Salmonids with Special Reference to the Problems and Control of Maturation in Fish Culture
… food conversion efficiency observed in mature fish...
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Honeycomb fiber-reinforced polymer sandwich composites for development of aquaculture raceway systems
… in WV and other mid-Appalachian states for fish culture can substantially increase aquaculture economic development. The primary limitation to the effective utilization of discharged waters is the lack of suitable fish culture tanks that can be easily installed in rugged terrains surrounding …
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Design and Evaluation of a Portable Ultra-Violet Microbial Disinfection Chamber
… were conducted: Controlled Laboratory trials and Fish Culture Room Trials. The Controlled Laboratory Experiments were conducted in order to test the effect that the Ultra-violet unit had on known cultures of bacteria while the Fish Culture Room Trials were conducted to test the chambers affect on …
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A Conceptual Model of Groundwater Flow at the Midway, Utah Fish Hatchery as Constrained by Geochemical, Physical Hydrogeological, and Geophysical Methods
… revenues from Utah's $393 million sport fishing industry, the state expends millions of dollars every year on costs associated with whirling disease mitigation and prevention. A state fish hatchery at Midway, Utah was closed when the shallow unconfined aquifer being used for fish culture …
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Water quality requirements for first-feeding in marine fish larvae of the Cape of Good Hope, with description of developmental stages
The tolerance of marine fish larvae to NH₃, NO₂⁻, NO₃⁻, H⁺, OH⁻, O₂, and CO₂ was investigated using the decrease in first-feeding incidence following a 24-h exposure as the criterion of response. Ten species, all hatched from pelagic eggs collected at sea, were used in the studies: two soleids …
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Growth, carcass composition, and plasma growth hormone levels in cyclically fed rainbow trout, Oncorhynchus mykiss microform
… weekly for 24 weeks to include 4 feeding cycles. Fish that were placed on a cyclic feeding regime exhibited higher specific growth rates, protein levels and lower fat content than fish that were fed daily. The condition factor, which is an index of the fatness or leanness of a fish, was slightly …
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Water-Soluble Vitamin Requirements of Tilapia (Sarotherdon Mossambicus Peters and S. niloticus Linnaeus)
… Peters and S. niloticus L.) were evaluated. Fish were maintained between 25 - 270C and weighed weekly. All diets were isocaloric and prepared from semi-purified constituents with a vitamin-free casein. Data from fish performances, development of deficiency symptoms, analyses of proximate fish …
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Performance characterization of Erwin, Shasta, and Kamloops strains of rainbow trout under culture conditions at White Sulphur Springs National Fish Hatchery, West Virginia
… Duncan River Kamloops) were collected to guide fish culture operations at White Sulphur Springs National Fish Hatchery (NFH). The performance of the strains was evaluated in terms of survival, growth, disease resistance, reproductive performance (number of ripe and culled females, spawning time, …
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Aquaponic biofilter system using heliconia sp. for ammonia removal in lake
… is a system that mutually integrates aquaculture and plant cultivation. Aquaponic biofilter system also applies phytoremediation mechanism to reduce nutrient. Therefore, phytoremediation of lake water in Tasik Teknologi in campus area of Universiti Tun Hussein Onn Malaysia (UTHM) was …
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The Effects of a Dietary Bacterial Protein on Mineral Balance in Rainbow Trout (S. gairdneri Rich.)
… the new feedstuff on the mineral balance of the fish as expressed by the carcass and tissue mineral levels. Supplements of the major and trace elements were added to trout diets in various combinations and with Pruteen, casein or fishmeal as protein sources in order to test the effects of these …
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The economic feasibility of introducing aquaculture into traditional farming systems in Arizona
… evaluate the economic feasibility of introducing fish culture into irrigated cotton production on farms in central Arizona. The representative farm adopted in this study is a cotton farm described in Arizona Field Crop Budgets, 1994-95. The only adjustment necessary for the farmer to make is to …
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The effects of ozone treatment on chemical parameters of a recirculating aquaculture system producing hybrid striped bass
… is that the application of ozone to reuse aquaculture water provides more favorable conditions for hybrid striped bass at production levels. Evaluation of water quality in fish culture systems being treated with ozone was made during a production trial (1200 fish/14,OOO 1). Originally, a …
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Bacterial Kidney Disease and Its effect on the Salmonid Immune response
… of bacterial kidney disease (BKD) of salmonid fish, is a pathogen of great concern among fisheries and the aquaculture industry worldwide. Previous investigations have indicated the pathogenesis of BKD is complex. It is a chronic, multisystemic, granulomatous disease with a number of potential …
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Survival and growth of fish in water reclaimed from cattle feedlots
… for filtration and plant production, and a aquaculture system. The goal of this research was: (1) to assess the feasibility of growing and maintaining stocks of bait fish, sport fish, and tropical fish within an integrated system designed to remediate effluents from confined animal feeding …
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A computer simulation model for wastewater management in an integrated (fish production-hydroponics) system
Intensive fish production in a recirculating aquaculture system facility is a complex bioengineering operation involving a sensitive balance among physiological, water quality, and management components of the overall system. Warm and nutrient-rich wastewater discharged from controlled-environment …
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Comparative Growth of All-Female Versus Mixed Sex Yellow Perch (Perca flavescens) in Recirculating Aquaculture Systems
Nine, production-scale, recirculating aquaculture systems were utilized to compare the growth parameters between all-female and mixed sex yellow perch stocks. Each system was stocked with 455 fish m⁻³ and contained one of three different biofilter types: a rotating biological contactor, a trickling …
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Biosecurity in the Recirculation Sector of Finfish Aquaculture in the United States and Canada
In aquaculture, biosecurity consists of policies, procedures and measures used to prevent or control the spread of fish disease. The focus of this research was the practice of biosecurity in the recirculation sector of finfish aquaculture in the United States and Canada. Specifically, this …
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Pharmacokinetic Studies and Tissue Residue Analysis of Oxytetracycline in Summer Flounder (Paralichthys dentatus) Maintained at Different Production Salinities and States of Health
Summer flounder, Paralichthys dentatus, culture is becoming increasingly popular in the United States because of high market prices and consumer demand. In addition, flounder is a marine fish species that can tolerate a wide range of salinities, allowing for inland intensive fish culture. …
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