Within-family selection enhances shrimp growth
A study in Brazil found that the growth superiority brought about by within-family selection of tested shrimp transmitted to the next generation of animals.
Review: Use of organic acids, salts in fish diets
Published information on the effects of including organic acids and their salts at low concentrations in aquafeeds varies according to fish species and age, as well as the types and levels of organic acids and salts used.
Black tiger breeding program yields record shrimp harvests in Australia
Traditionally, Australian farmers relied on wild broodstock to source black tiger shrimp larvae, but substantial progress has been made in the domestication and selective breeding of Australian P. monodon.
Cool it: Refrigeration basics for aquaculture operations managers
The basic premise of refrigeration is to move heat from a colder heat source to a warmer heat sink. Common pitfalls for refrigeration in aquaculture are a lack of water flow, inadequate evaporator capacity and evaporator freezing.
Thailand study: Performance trials generate important result
In research involving white shrimp siblings raised in ponds in Thailand and in raceways in Hawaii, shrimp growth can be improved after one generation of selection, even with a modest investment.
Brazil study: Beta-glucans improve survival of IMNV-infected white shrimp
Authors examined whether beta-glucans extracted from bakers yeast could improve the survival and growth of Pacific white shrimp challenged with infectious myonecrosis virus.
Colombian shrimp research associates TSV, NHP selection, resistance
In an NHP (necrotizing hepatopancreatitis) challenge test, shrimp from a Colombian breeding program had higher resistance and 30 percent greater survival than a control line of Taura syndrome virus-free shrimp.
Animal welfare: Growing factor in international aquaculture
Although concerns for the animal welfare of food animals are currently highest in the United Kingdom and European Union, they are also growing in other parts of the world.
Tilapia show immunization response against Ich
In research on alternatives to formalin treatment to control Ich infestation, the authors performed a study that compared the immune responses of Nile tilapia and red tilapia against the parasite.
Intensive raceways without water exchange analyzed for white shrimp culture
A study demonstrated that market-size shrimp can be profitably produced with zero water exchange in intensive raceways. The reuse of water that served for an earlier nursery study allowed the immediate establishment of a healthy microbial community in the grow-out study.
Studies seek oral delivery of RNAi-based therapeutics for shrimp
Therapeutics to harness an active RNA interference (RNAi) response in shrimp and protect against viral diseases could provide benefits to aquaculture.
Prebiotics, probiotics provide alternatives to antibiotics
As the demand for aquaculture products increases, so does the search for environmentally friendly alternatives to antibiotics. Alternatives to antibiotics include dietary prebiotics, probiotics and synbiotics.
China rebuilds fleshy shrimp industry
In China, fleshy shrimp have had much higher market value than other shrimp species. China’s aquaculture scientists and fishery agencies have therefore worked closely with shrimp farmers to rebuild the farming industry for F. chinensis.
Lab challenge for selection of IMNV-resistant white shrimp
Although still being refined, the IMNV challenge method developed at the University of Arizona has shown promise as a tool to measure resistance in selected family lines of L. vannamei.
Finfish genetic improvement
Although the application of selective breeding and genetics can yield dramatic results, the use of genetically improved stock varies widely among aquaculture sectors. Virtually all Atlantic salmon and rainbow trout producers use improved stock, while use of genetically improved tilapia varies widely.
Recirculation: Microbial control strategy for intensive marine larviculture
Recirculating aquaculture systems have properties that can mature and stabilize the microbial community, creating a more benign bacterial flora in larval tanks.