A look at unit processes in RAS systems
The ability to maintain adequate oxygen levels can be a limiting factor in carrying capacities for RAS. The amount of oxygen required is largely dictated by the feed rate and length of time waste solids remain within the systems.
Hyper-intensive nursery systems offer advantages for shrimp culture
Hyper-intensive nursery systems for juvenile shrimp production present significant opportunities for shrimp farmers to increase profits. Nursery culture results in strong, healthy and uniform juveniles with great potential for compensatory growth when stocked in production ponds. Nurseries produce a maximum number of juveniles of a desired weight, and their use can reduce production costs by shortening time in growout ponds and increasing pond efficiency through additional cycles per year.
Effects of suspended solids in shrimp biofloc systems
The use of biofloc systems for shrimp culture requires monitoring of water quality parameters, particularly suspended solids levels.
Oxidants enhance water quality
Oxidants are used in aquaculture as disinfectants or to enhance water quality. Hydrogen peroxide and sodium carbonate peroxyhydrate can be sources of dissolved oxygen in emergency situations where mechanical aeration is not possible.
Norway showcases halibut farm as sustainability star
Recognizing its potential as a sustainable fish producer, Norway highlights land-based halibut farmer Sogn Aqua in the debute of The Explorer digital showroom. The Advocate recently paid a visit to the farm in Ortnevik.
Drying, liming, other treatments disinfect pond bottoms
The traditional way of destroying organisms in pond bottoms is thorough dry-out for a week or longer. Fish toxicants and liming can kill unwanted parasites.
A case for better shrimp nutrition
Shrimp farm performance can often be below realistic production standards. Use proven nutrition, feeds and feeding techniques to improve profitability.
Integrated aquaponics systems evaluated for arid zones of Chile
Integrated aquaponic operations can improve water use efficiency because plants participate in nitrogen and phosphorus removal and integration.