By-the-numbers nutritional bioenergetics for optimal feeding
Using a series of equations, energy and protein requirements for every fish species can be calculated and adapted to changing conditions.
Perspectives for red-banded sea bream culture
Red-banded sea bream could be farmed in systems designed for other sparid species. The authors’ facilities have achieved spontaneous spawning.
Snail control in fish ponds
The freshwater drum is a proposed snail-control vector in catfish ponds. In tank studies the drum showed high survival and reduced snail populations.
Bivalent vaccine protects yellowtails, amberjack against pasteurellosis
The authors developed an efficacious combination vaccine against P. piscicida and L. garvieae for yellowtail and amberjack. Field trials showed positive results, and the vaccine was approved for use in Japan.
Bath immersion, booster vaccination strategy holds potential for protecting juvenile tilapia
In a study, vaccination of juvenile tilapia by bath immersion followed by two booster vaccinations stimulated specific antibody responses and protection against S. iniae challenge.
Selective breed high-efficiency seedstock boost integrated shrimp farm performance
The foundation of a successful integrated aquaculture company is reliable production of healthy postlarvae. Methodical breeding selection of the offspring from carefully managed broodstock can lead to improved disease resistance and higher growth rates.
Field performance of imported SPF shrimp in Brazil
Combined analyses of SPF shrimp from six imported lines and one commercial genetically improved line in Brazil found excellent winter performance.
Probiotics help control recurrent bacteria
Studies at a commercial sturgeon farm that experienced serious disease effects from varied bacterial pathogens in fish yielded positive results for probiotic treatments.
Feed-related melamine risk minimal to shrimp, humans
Although histological studies of shrimp that consumed feed with the suspect ingredients found crystals of salts of melamine in antennal glands, the crystals did not affect the shrimp.
White tail disease in shrimp mimics infectious myonecrosis
White tail disease in shrimp can result from various conditions. Infectious Myonecrosis is a significant disease of white shrimp in both Latin America and Asia.
The truth about selenium
Selenium in ocean fish is essential for human immune function and required for vital tissues like brain and hormone-producing organs. The trace element also can counter some of the impacts of methylmercury in fish.
Antimicrobial resistance: complex, unavoidable
Resistance to antibiotics is unavoidable because it is an aspect of bacterial evolution. Resistant microflora have been observed in water that has not had recent contact with antimicrobial agents.
Sheepshead: American sea bream shows culture potential
Sheepshead are robust, adaptable, omnivorous fish that are cheap to feed and can be grown in ponds, cages, tanks or raceways in saltwater or freshwater.
Disease management in tilapia
Tilapia in culture are affected by bacterial, viral and parasitic pathogens. Disease impacts vary depending on both environmental and biological factors.
Pompano reared to market size in RAS
In a trial, rearing density affected the mean weight and weight gain of pompano, although differences between treatments became apparent toward the end of the study.
DNA fingerprinting: System for black tiger shrimp
Molecular markers can allow on-farm selection of high-performance families without the need to use costly alternatives such as separate rearing of families/ groups of families or tagging animals.