Understanding shrimp hemocytes
Shrimp hemocytes are an important defense against attacks by external agents such as viruses and bacteria. Health diets complement antibacterial action.
Larviculture of the West Indian pointed venus
Larviculture and culture density research with West Indian pointed venus is relevant to restocking efforts to support the extractive fisheries from natural banks and also for the development of aquaculture.
New nested PCR test targets gene specific to farmed shrimp pathogen EHP
A new nested PCR method specific to farmed shrimp pathogen EHP can be used in routine diagnostics and is also useful to detect low-grade EHP infection.
Reduced growth performance of black tiger shrimp infected with IHHNV
This study simulated the commercial grow-out of two cohorts of P. monodon that differed in their broodstock IHHNV infection loads, and showed that the viral prevalence, survival and growth performance of pond progeny were significantly affected.
Efficacy of saturated lipids in juvenile California yellowtail feeds
This study compared production performance and tissue fatty acid composition of California Yellowtail fed diets containing various saturated lipids.
Hyperthermia can boost innate immune system in juvenile fish
Hyperthermia, or heat shock treatment, is an unconventional approach to pathogen control in fish aquaculture that appears to have potential to improve disease resistance in fish like tilapia and barramundi.
Development of new and real-time PCR for detection and quantification of NHPB
Authors describe conventional PCR and real-time PCR assays based on the NHPB flgE gene as alternative methods for the detection and quantification of NHPB in shrimp and shrimp-associated samples, including artemia. This newly described method will be an additional diagnostic tool for confirmation of this pathogen.
Emerging disease: Shrimp Hemocyte Iridescent Virus (SHIV)
SHIV is a new Pacific white shrimp virus in the Iridoviridae family. Authors also developed an ISH assay and a nested PCR method for its specific detection.
Evaluating stunning methods in tropical shrimp aquaculture
Study evaluated effects of stunning methods (thermal shock and electric shock) on the welfare of three crustacean species, including Pacific white shrimp.
With animal welfare an emerging consumer concern, fish farmers take stock
Food producers are educating themselves on the latest in animal health and welfare and humane harvesting and processing practices. A recent webinar highlighted issues specific to aquatic animals.
Effects of combining two exogenous carbohydrases on growth of Nile tilapia
This study evaluated the effects of a combination of two exogenous carbohydrases – xylanase and β-glucanase (XB) – to enhance growth performance Nile tilapia juveniles.
Comparing biofloc, clear-water and hybrid RAS systems as shrimp nurseries
This study compared three types of RAS nurseries for shrimp: biofloc (BF), clear-water (CW), and hybrid RAS (HY). Results showed that differences between treatments in terms of shrimp survival, mean harvest weight, specific growth rate, and feed conversion ratio were not significant.
Salmon scientists collaborate on new global health initiative QASH
A cooperative effort between salmon scientists in Norway, Scotland, Chile and Canada aims to develop a globally applicable tool to help management and certification of salmon farms.
Comparing biofloc, clear-water and hybrid RAS systems as tilapia nurseries
This study examined differences in fish performance and water quality dynamics between biofloc, clear water and hybrid systems as nurseries for tilapia.
Study ties animal welfare practices to consumer purchasing
There’s an opportunity to expand the U.S. market for farmed seafood if the aquaculture industry were to more widely adopt humane production practices, according to a study by Changing Tastes and Datassential.
Protein conversion efficiency in aquaculture
Prof. Boyd discusses the overall conversion efficiency of plant protein to animal protein (including pasture animals), which been estimated at 8.3 percent globally. The whole animal conversion for feed-based production is around 35 percent for chickens, 20 percent for swine, and 10 percent for beef.