
Cathepsin enzymes, part 1
Cathepsins B, D and L are considered critical in fish muscle post-mortem modifications or gel softening during the setting of surimi.
Cathepsin D alone and in combination with other cathepsins presents the greatest proteolytic activity on some fish muscles.
Cathepsins B, D and L are considered critical in fish muscle post-mortem modifications or gel softening during the setting of surimi.
A growth trial in Canada evaluated the use of algae biomass to increase the concentration of long-chain polyunsaturated fatty acids in the tissues of rainbow trout.
Sodium butyrate has potential as an additive for marine shrimp diets, improving both the balance of intestinal bacterial flora and performance of the shrimp.
After refilling ponds, surviving microorganisms – including Vibrio parahaemolyticus, which causes EMS in shrimp – may benefit from the availability of nutrients in sediment and water and lack of competing microorganisms.
A small test market at a high-end grocery store near Washington, D.C., USA, showed that farm-grown freshwater prawns would sell to high-income consumers who had not previously tried the product.
In a 60-day study, Amazon River prawn postlarvae stocked in pens within a culture pond were given commercial feed or received no feed beyond the natural organisms in the pond.
Red claw crayfish have numerous attributes that make the species a good choice for aquaculture, including flexibility in feeding that may allow expensive prepared diets to be supplemented or replaced by natural foods or forages.
To ensure optimal water quality and clean pond bottoms at shrimp farms, choosing consistently good-quality feed and close monitoring of feed trays supported by a proven feeding guide are recommended practices to control the amount of feed applied to ponds.
Aquaculture in Ghana has overcome its historic fits and starts and is helping to narrow the gap between domestic seafood production and consumption. Production is based on Nile tilapia.
As wide use of antibiotics has led to antibiotic resistance in fish pathogens, vaccines present an alternative control method to prevent bacterial diseases.
Traditional sea cage culture typically relies on natural water exchange to replace oxygen consumed by fish, which may not provide sufficient oxygen – especially during seasonal periods of high temperature.
Clove oil and eugenol have been recommended and used as anesthetics for several fish species. Moreover, these products have received the attention of researchers because of their chemo-preventive effects, as well as their anti-inflammatory and antioxidant properties.
Since Vibrio samples often degrade during transport, the authors analyzed nucleic acids (FTA) cards as a simplified, shelf-stable collection method for the preservation of genetic material from water samples.
In a study, Atlantic salmon fed diets with red seaweed had significantly higher levels of antiviral activity against the infectious salmon anemia virus than fish fed a control diet.
The potential shrimp aquaculture has for significant improvements in performance through improved genetics and nutrition will not be fully expressed unless appropriate feeding methods are practiced.