Microbial flocs for aquaculture
Microbial flocs consist of a variety of bacteria, fungi, microalgae and other organisms suspended with detritus in culture water.
Source affects amino acid uptake in channel catfish diets
In channel catfish diets, amino acid uptake from purified feed supplements is faster than from intact proteins in practical feed ingredients.
Walking catfish production in Thailand
The excellent culture characteristics of hybrid walking catfish have made them the dominant culture type in Thailand.
Managing natural productivity in channel catfish nursery ponds
Decisions on stocking channel catfish fry should be based on the abundance of large zooplankton in the pond water, rather than total zooplankton abundance.
U.S. trials compare commercial diets fed to juvenile cobia
In trials with two commercial aquafeeds, juvenile cobia exhibited excellent growth and feed conversion. Higher-than-required lipid levels in the diets did not improve growth.
Reviewing the safety of aquaculture probiotics
Probiotics are naturally occurring microbes in cultured animals or their environments that compete with bacterial pathogens to favorably alter the rearing environment and improve animal health. The success of a probiotic strain depends not only upon its stated and actual performance, but also its safety to the target organism, humans, and the surrounding environment.
Shrimp copyright: Inbreeding strategies effective against copying of genetically improved shrimp
Shrimp breeders often protect their genetic investment by selling broodstock that will accumulate increasing levels of inbreeding in successive generations.
Sulfur amino acid utilization in aquaculture
Dietary sulfur amino acids (methionine and cysteine) are required to support optimal growth, feed efficiency, and nutrient utilization in various fish.
Alfalfa concentrate: natural shrimp color enhancer
Adding alfalfa concentrate containing natural carotenoids and pigments to the finishing diets of shrimp can enhance coloration of shrimp after cooking.
Rockfish a potential culture species in U.S. Northwest
Rockfish aquaculture could potentially benefit wild stock-rebuilding efforts, as well as provide flavorful fish for consumers in the United States.
Development of tetraploid rainbow trout may yield improved triploid production
The culture of sterile triploid rainbow trout, which carry three sets of chromosomes, can limit losses to sexual maturation and reduce potential problems regarding interactions of escaped fish with natural stocks. The authors’ research holds promise for creating tetraploid rainbow trout strains that can be crossed with diploid trout to yield triploids for aquaculture production.
Off-flavors in channel catfish managed with low-dose applications of copper sulfate
Off-flavors in farmed fish cost the U.S. catfish industry millions but their prevalence can be greatly reduced by copper sulfate treatment of pond water.
Seafood-associated mycobacterial infections
Mycobacterial infections can happen to aquaculture workers and others who handle seafood or animals in aquatic ecosystems.
Transgenic improvement: Salmon, trout technology awaits regulatory approval
Transgenic salmon and trout developed by AquaBounty Technologies are minimally different from other farm-raised fish, but exhibit impressive and inheritable growth rates.
High water temperature affects WSSV management
In a study, results showed that raising water temperature to 33 degrees-C after inoculation was sufficient to prevent shrimp mortality from WSSV.
Dangers of viral pathogens in translocated shrimp, Part 2
International Council for the Exploration of the Seas (ICES) guidelines should be modified and closely followed to guard against the possibility of introducing new viral pathogens.