Flawed risk assessment of contaminants in salmon
A risk assessment of PCBs and other contaminants in farmed and wild salmon was flawed and did not reflect public health community opinions.
Land use for aquaculture production
Space requirements for aquaculture include the culture water area and associated physical culture facilities as well as the land used to raise plant-based feed ingredients.
Tractor-powered paddlewheels provide emergency pond aeration
Even with dedicated aerators, aquaculture farms can experience stress and mortality in culture animals due to low dissolved oxygen concentrations in pond water. Simple tractor-powered aerators offer a quick and portable solution to low dissolved oxygen levels that provides strong emergency aeration and water movement.
Pilot system recovers protein, lipids from fish byproducts
It is technologically feasible to recover functional muscle proteins and lipids from fish processing byproducts using isoelectric solubilization/precipitation.
Improved aeration, D.O. management advance catfish production
Emergency aeration with tractor-powered paddlewheels allowed U.S. catfish farmers to increase feeding and stocking rates, and double production.
Limits of catfish production in ponds
The potential yield of catfish from earthen ponds is high, but several factors limit production under commercial conditions.
BMPs proposed for food safety in rainbow trout culture in Mexico
Proposed best management practices for rainbow trout production address eight areas of production covering the entire culture cycle.
Measuring water flow
Water flow within channels can be measured using the float method or calculated using rating curves that project water velocity based on a series of finite measurements.
Tilapia farming in Honduras
Tilapia culture is an important component of local food production in Honduras. Rising exports have raised in-country demand and production.
Estimating water volumes in aquaculture
Accurate estimations of water volumes in aquaculture systems contribute to both better management of resources and cost-efficient production.
Shrimp farming in Indonesia
In Indonesia, shrimp farming practices vary somewhat from region to region depending on the local conditions and financial pressures.
Oxygen injection systems provide emergency aeration, D.O. management
In intensive ponds and raceways, oxygen injection can manage oxygen demand and can quickly increase dissolved-oxygen levels to minimize risk of catastrophic failure.
Groundwater and wells
Groundwater from wells is sometimes used to supply hatcheries and ponds. The potential water supply via wells is defined largely by geology.
Performance curves can standardize evaluations of biofilter performance
A simple evaluation process can characterize commercial biofilter performance as a function of flow rate and ammonia-nitrogen concentration.
Settler evaluation: Radial flow vs tangential flow
In a study, a radial-flow settler provided approximately twice the TSS removal efficiency of a comparable swirl separator.
Microbial mats remove nitrogen, phosphorus from aquaculture effluents
Research has shown that microbial mats are effective at removing nitrogen and phosphorus from aquaculture effluents.