Intelligence
With pangasius imports growing in Central and South American production areas, one response is to introduce the fish as a new aquaculture species.
Responsibility
Auburn University researched how to improve economic efficiency and profitability of catfish production with in-pond raceway systems. IPRS systems help achieve high levels of feed performance and fish survival, and lower production costs.
Responsibility
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.
Responsibility
Ultrasound offers a low-impact alternative to chemical treatments for unwanted algae, like chlorophyll a, and biofilms in aquaculture.
Health & Welfare
Researchers found juvenile queen conch fed diets containing added macroalgae had higher survival than a control given catfish feed only.
Health & Welfare
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
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
As with other species, varied health problems – and treatments – related to parasites and bacteria have been encountered in pangasius catfish.
Health & Welfare
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
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
Experiments by the authors showed that the gene activity of the brain neurotransmitter CART changed in catfish in response to feed intake.
Health & Welfare
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
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
Studies indicate that feeding channel catfish once daily to satiation from advanced fingerlings to market size provided maximum growth and production.
Health & Welfare
In studies that compared performance of channel catfish hatcheries, eggs hatched six hours sooner with lower-oxygen incubation, but experienced lower survival.
Intelligence
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.