Floating closed-containment systems incorporate low-pressure pumping, oxygen supplementation, solid-waste separation and efficient feed management.
Cholesterol is an essential nutrient for penaeid shrimp. Trials found that a digestibility enhancer based on natural emulsifiers was as effective as purified cholesterol in improving shrimp growth and feed conversion.
A technique based on checking the color of the shrimp intestine can complement the use of feed tables and trays, which are less effective at high temperatures, when no leftovers are found.
Streptococcus species account for over half of all bacterial diseases in tilapia. The authors studied the ability of biotype-specific vaccines.
Integrated shrimp farming is desirable due to its ability to provide food safety and traceability. Production planning is the most essential exercise in integrated systems.
The slipping shrimp production in Southeast Asia due to disease has a number of causes. Emerging viral diseases take a toll, as do bacterial diseases caused by vibrios and other pathogens.
The Shrimp Book, published in 2010, brings together experts from around the world to fill the critical need for a central reference source on the state of shrimp production practices.
Kenya's economic stimulus program includes a bold move to help the country’s small-scale farmers literally dig themselves out of poverty with fish ponds.
Essential oils are linked to livestock performance gains. In research with channel catfish, inclusion resulted in greater feed consumption and weight gain.
An eight-week growth trial evaluated the effects of potassium diformate on the growth performance and digestibility of Pacific white shrimp. Weight gain was not significantly affected by different levels of PDF in diets, and survival was high for all treatments.
Healthy populations of both ammonia- and nitrite-oxidizing bacteria must be present in aquaculture systems to support the nitrification of potentially toxic ammonia to nitrite, with further oxidation to less problematic nitrate.
In southern Brazil, management data for Pacific cupped oyster culture were assessed to characterize production in relation to environmental parameters.
In a nutrition trial, longfin amberjack received two diets composed of 40 percent soy protein concentrate and 10 percent fishmeal, and a control diet with 20 percent fishmeal.
The absence of practical immediate-release sedatives for fish jeopardizes fish, fisheries, fish culture and research, posing risks to aquatic resources as well as those handling fish.
Single-cell detritus is a seaweed-based bioproduct whose use as feed has been studied with oysters and artemia. The authors are working toward the development of SCD for shrimp larvae.
Granulomas in diseased fish often indicate infections by bacteria. External signs range from ulcers and emaciation to lethargy or no signs at all. Internally, gray or tan foci present in organs and can coalesce with severe inflammation.