Emerging trends in salmonid RAS, part 1

The benefits realized by recirculating aquaculture systems – including enhanced fish growth, product quality and survival, as well as reduced treatment costs – have made the RAS approach an important production trend. 

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Diets affect abalone meat quality, shell color
Diets affect abalone meat quality, shell color

Diets affect abalone meat quality, shell color

A preliminary study investigated the effects of diet on the meat quality and shell color of Pacific abalone. A test diet and a commercial abalone feed resulted in lower meat protein content compared to that achieved with a diet of Pacific dulse seaweed. The artificial diets also caused the abalone to have yellow or orange shells. The seaweed diet alone resulted in abalone with dark-brown shells. However, a combination of seaweed and either artificial diet improved abalone growth, meat quality and shell color. 

New paradigm in pathogen control
New paradigm in pathogen control

New paradigm in pathogen control

Research at a hatchery in Mozambique has demonstrated the possibility of developing acquired immunity to white spot syndrome virus within shrimp. The approach involves activating the immune system via a specific manipulation of water parameters during the treatment, intensity level and timing, with the secondary help of immunostimulants.