Tag Shrimp

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. 

Recent research by the authors discovered genetic markers for the identification of Pacific white shrimp with enhanced capability to convert soy protein in feed. 

There is a clear difference between the shrimp postlarvae traits that are economically important in Central and South America versus those of Asia, creating a challenge for breeders to satisfy the somewhat opposing breeding goals the regions demand. 

Applied to shrimp postlarvae at Thai and Latin American farms, a thermal treatment of constant water temperature increased final survival rates. 

Monitoring of Vibrio bacteria in shrimp larvae determined a relationship among hepatopancreas color, bacteria concentration and signs of early mortality syndrome. 

A laboratory study at the University of Arizona examined the effects of tilapia to control EMS and mortality in Pacific white shrimp.in controlling AHPN. 

Mushiness of shrimp tails is often associated with head-on shrimp. Results from the authors’ study, however, indicated that texture values did not vary much between headless and head-on shrimp stored over a two-week period at 4 degrees-C. 

The use of biofloc systems for shrimp culture requires monitoring of water quality parameters, particularly suspended solids levels. 

Phytogenics comprise a class of plant-derived feed additives that improve animal performance. They have been shown to exert multiple positive effects in fish and shrimp, including improvement of feeding efficiency and digestion, reduction of nitrogen excretion and improvement of gut flora and health.