Responsibility
Ultrasound technology controls algae, biofilm growth
Ultrasound offers a low-impact alternative to chemical treatments for unwanted algae, like chlorophyll a, and biofilms in aquaculture.
Responsibility
Dissolved oxygen concentrations in pond aquaculture
Various studies suggest that maintaining minimum daily dissolved oxygen concentrations above 3 mg/L in channel catfish and penaeid shrimp ponds assures better feed consumption and growth.
Health & Welfare
Artificial diets for juvenile queen conch
Researchers found juvenile queen conch fed diets containing added macroalgae had higher survival than a control given catfish feed only.
Health & Welfare
SCP comparable to hydrogen peroxide as catfish egg disinfectant
In studies, sodium carbonate peroxyhydrate proved an effective alternative to formalin and hydrogen peroxide as a treatment for controlling fungal infections of catfish eggs and improving hatch rates.
Responsibility
Direct energy use in channel catfish production
The direct energy input values for aquaculture include energy used in constructing facilities, producing seedstock and feed, powering mechanical aerators, applying feed and harvesting and processing culture animals.
Health & Welfare
Common diseases of pangasius catfish farmed in Vietnam
As with other species, varied health problems – and treatments – related to parasites and bacteria have been encountered in pangasius catfish.
Health & Welfare
Ultrasound tested in channel catfish production systems
Ultrasound may serve as an alternative to chemical treatments in channel catfish production. In studies, controlled application of ultrasound did not significantly affect catfish feed consumption and weight gain.
Health & Welfare
pH field measurements improve catfish fry survival
Since catfish fry survival lowers if subjected to an abrupt pH rise of 0.5, the authors recommend measuring pH in transport tanks and receiving ponds and the addition of buffering agents to transport tanks.
Health & Welfare
CART regulates food intake in channel catfish
Experiments by the authors showed that the gene activity of the brain neurotransmitter CART changed in catfish in response to feed intake.
Health & Welfare
Snail control in fish ponds
The freshwater drum is a proposed snail-control vector in catfish ponds. In tank studies the drum showed high survival and reduced snail populations.
Health & Welfare
Managing pre-harvest off-flavors in pond-raised catfish
Although causes of pre-harvest off-flavors in catfish differ due to climate, water quality and pond hydrology, blue-green algae is a common culprit.
Health & Welfare
Trials find feeding frequency factor in catfish performance
Studies indicate that feeding channel catfish once daily to satiation from advanced fingerlings to market size provided maximum growth and production.
Health & Welfare
Oxygen management at channel catfish hatcheries
In studies that compared performance of channel catfish hatcheries, eggs hatched six hours sooner with lower-oxygen incubation, but experienced lower survival.
Intelligence
Reducing dockages at catfish plants
A survey found that catfish farmers lost about 2.5 percent of their product value to processing plant dockages. Out-of-size catfish represented the greatest losses.
Health & Welfare
Off-flavors in channel catfish managed with low-dose applications of copper sulfate
Off-flavors in farmed fish cost the U.S. catfish industry millions but their prevalence can be greatly reduced by copper sulfate treatment of pond water.
Intelligence
Selection program produces channel catfish with improved processing yield
A selection program can produce channel catfish with smaller heads relative to their body weights to deliver higher dress and fillet yields.