Tag Shrimp

A study confirmed the utility for improved polymerase chain reaction (PCR) detection of the Vibrio bacteria that cause acute hepatopancreatic necrosis disease (AHPND) in asymptomatic shrimp by permitting the shrimp to expire and decompose for several hours prior to preservation and PCR processing. 

Although relatively expensive, mechanical aeration increases production. Asian-style paddlewheel aerators are widely used but are inefficient. Testing has led to more efficient designs that are now widely used in U.S. catfish and shrimp ponds. 

Camanor Produtos Marinhos Ltda. operates a land-based, multi-species concept for sustainable shrimp production called AquaScience. The Global Aquaculture Alliance has named Camanor the winner of its annual Aquaculture Innovation and Leadership award. Director Werner Jost discusses the process. 

The husband-and-wife team of Bill and Betty More has earned admiration and respect in many parts of the world for their many decades of work in aquaculture and sustainability certification. SIRF has established a living memorial in their name. 

Crustaceans, fish and any food that contains protein have the potential to cause allergic reactions in some individuals. To protect consumers, seafood businesses must stay abreast of changing regulations. 

Poor-quality ingredients can’t become good-quality ingredients. Quality protein is essential for the healthy growth of any omnivorous or carnivorous aquaculture species. Insect meals seem to fill this need, and their mass-scale production appears to be sustainable. 

Selection for disease resistance has been used in breeding farm animals and can be a viable option to deal with white spot syndrome and acute hepatopancreatic necrosis disease in commercial shrimp culture. In trials, heritability for AHPND resistance was low, while that for WSS was moderate. 

Shrimp farmers in Australia believe that applying smaller amounts of feed regularly is an effective strategy for maximizing feed conversion in ponds. By providing more time for shrimp to rest between eating cycles, consistently lower FCRs have been achieved. 

Strategies to control Vibrio bacteria at aquaculture farms must revolve around limiting inputs, including those from postlarvae suppliers, those that come in with the water, those that remain in the soil between crops and those in the feed and accumulated organic matter. 

Control of Vibrio bacteria should focus on minimizing overall bacterial loads and the potential for horizontal transmission. The challenge for hatchery managers is identifying gaps in biosecurity and plugging them without creating niches for other potential pathogens. 

Incorporating feed manufacturing into an aquaculture business offers greater and more efficient product access, control and logistics, as well as additional profit potential. A feasibility study that plans for growth and includes both a business plan and economic analysis is a must. 

This article reports on a breeding program focused only on the improvement of growth rates at associate farms in Ecuador. By applying a localized breeding strategy, the program has yielded an average 7.8 percent annual phenotypic gain for commercial growth rates, while survival has remained fairly constant. 

Feed trays are typically used to avoid overfeeding in aquaculture production systems. They are sometimes used to deliver 100 percent of the feed that is fed, and other times a small number of trays are used as a guide to evaluate broadcast feeding techniques. 

Live markets represent a promising niche in regions where locally raised seafood cannot compete with inexpensive imports. Study results suggested regional shrimp producers could effectively reach premium markets by shipping using waterless methods. 

Vietnam Organic applied an enzymatic hydrolysis process on shrimp head waste to produce a shrimp soluble extract (SSE) feed attractant that contains a mixture of free amino acids and peptide.