The release of cultured red king crab juveniles into the ocean presents a possible way to enhance stocks. Research in Russia found that early crab postlarvae did not feed, but swim actively.
Trials indicated that in order to determine methionine and TSAA requirements for shrimp, methionine must be added to research feeds in either a chelated or covalently bound form.
Since the early 1990s, salmon farmers have added lights to their cages from midwinter to midsummer to reduce the incidence of sexual maturation and improve fish growth.
The USDA marine aquaculture center is addressing genetic improvement of North American Atlantic salmon to develop improved lines for producers.
Regulations on antibiotics in aquaculture vary by country and region, from outright bans to minimal oversight.
Since physical and chemical hazards in seafood remain largely unchanged in storage, shelf life can be based on the growth kinetics of microbial hazards.
To overcome Infectious Myonecrosis Virus-related mortalities in cultured white shrimp, some Brazilian shrimp farmers tested the southern brown shrimp in grow-out ponds.
The principle of vaccination is based on two key elements of immunity: specificity and memory. Shrimp lack the appropriate cells and pathways to respond to specific pathogens and the long-term “memory” to deal with recurring infections.
Although its final quality can be variable, fish silage can be an effective protein supplement in feeds for various fish, shellfish and terrestrial animals.
In periphyton-based aquaculture, the various invertebrates that colonize the hard substrates provided in ponds supplement artificial feed.
Transcriptomics studies highlight impacts of different treatments on specific genes that can be targeted via nutritional intervention to increase farmed animal performance or welfare.
A Brazilian study demonstrated it is cost-competitive to grow Chitralada tilapia up to 1 kg in small cages via intensive culture.
Research at YSFRI’s new Genetic and Breeding Center for Mariculture in Qingdao, China, has produced 180 full-sib and half-sib lines of fleshy shrimp.
Policies to limit antibiotic use spurred interest in alternative strategies, such as dietary supplementation with immunostimulants and other compounds.
Fish oil replacements in feeds alter the nutritional profiles of farmed fish. The challenge is to determine how and when to feed plant or fish oils to maintain desirable omega-3 levels in fillets.
The addition of methyltestosterone to freshwater prawns diets did not significantly change the percentage of males in the population, but reduced survival.