Health & Welfare
Two-stage selection key for fast shrimp growth in Mexico
The largest shrimp hatchery in Mexico has implemented a two-stage selection program based on body weight at 28 days of age and and body weight at 130 days.
Health & Welfare
SPF shrimp breeding in Brazil
Through a genetic selection program started in 2006, significant advances have been achieved in the development of a specific pathogen-free L. vannamei line in Brazil.
Health & Welfare
Tank effects impact selection responses in shrimp breeding
Separate family rearing can lead to tank-derived environmental effects that are statistically confounded with full-sib family genetic effects in shrimp breeding.
Health & Welfare
Whole genome sequencing of aquaculture species
A whole genome sequence allows the identification of candidate genes responsible for production and performance traits for a given species. Ongoing genome projects include programs for Atlantic salmon, Atlantic cod, Pacific oysters, tilapia, catfish and shrimp.
Aquafeeds
Animal byproducts can provide cholesterol for shrimp feed
Animal byproducts like blood meal, meat and bone meal and other rendered products are good sources of cholesterol for use in aquaculture feed.
Responsibility
Dissolved oxygen concentrations in pond aquaculture
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
New recirculating systems offer efficient, responsible production
Recirculating systems, where probiotic, heterotrophic bacteria compete with pathogenic bacteria, can operate without antibiotics to produce tilapia and shrimp.
Health & Welfare
A look at aquaculture in Guyana
With its large quantities of water and little industry to pollute it, Guyana has the potential to become a greater player in global aquaculture.
Health & Welfare
Shrimp hybrids outperform parents in Brazil studies
In Brazil, shrimp hybrids – crosses of imported specific pathogen-free lines and a genetically improved and locally adapted line – outperform their parents.
Health & Welfare
Challenges to commercializing shrimp triploidy
Once satisfactory performance is demonstrated in commercial larval rearing and grow-out, automated induction will finalize the triploidy commercialization.
Responsibility
Greenhouse-enclosed superintensive shrimp production
As an alternative to pond production, U.S. scientists have developed bio-secure greenhouse-enclosed raceways for intensive shrimp production with limited water exchange.
Health & Welfare
Aquaculture genomics: Progress in identifying species genetics continues
The continued application of genome research to aquaculture will provide unprecedented accuracy for genetic selection of performance and production traits.
Aquafeeds
Fishmeal replacement in diets effective at shrimp farm trials
Shrimp farm trials demonstrated the feasibility of fishmeal replacement with soybean and corn gluten meal with little adverse effect on production performance.
Health & Welfare
Fish, shrimp respond to pheromone-based feeding attractants
The chemical communicators pheromones can be used to induce increased feeding activity in a range of farmed species. Preliminary commercial testing with pheromone feeding stimulants sprayed onto the surface of water prior to feeding found better feed utilization in fish and better water quality. Pheromone applications also produced shrimp that were 30 percent larger than the control shrimp and had a significantly faster rate of growth.
Responsibility
Advancing shrimp farm technologies support greater efficiencies, sustainability
Todays' shrimp farm technologies include biosecurity protocols, stocking densities according to pond design and aeration levels, and best practices for pond preparation and feed and water management.
Health & Welfare
Partial harvest-biofloc system promising for Pacific white shrimp
In a study in Indonesia, increases in efficiency in power use resulted from the combined application of biofloc technology and partial harvest.