Mexican startup offers DIY aquafeed solution by upcycling wastewater
MicroTERRA is a promising Mexico-based startup developing systems that use microalgae to turn fishpond wastewater into protein for fish feed.
Development, testing of microencapsulated Schizochytrium feeds for bivalve broodstock
Comparing performance of O. edulis broodstock fed microencapsulated Schizochytrium feed and live algae diets shows potential for bivalve hatcheries.
Egersund Net helps recycle 17,000 metric tons of discarded aquaculture equipment
Egersund Net has helped recycle 17,000 metric tons of aquaculture equipment over 12 years, saving an estimated 51,000 metric tons of CO2.
A comparison of resource use in shrimp farming, part 3: Energy
In part three of this series, the authors say lower energy use in shrimp farming requires producers to focus on water exchange and aeration.
Ocean seeding and blue corridors: Can these approaches effectively safeguard fisheries?
Can seeding the ocean with iron spur phytoplankton growth? Will protecting migration routes save fish stocks? Exploring new ways to safeguard fisheries.
Dissolved oxygen is a major concern in aquaculture. Here’s why.
Demand for dissolved oxygen is high in modern, intensive aquaculture, so DO concentration must be continuously maintained by mechanical aeration.
Effects of sodium humate and probiotics on Pacific white shrimp
Adding sodium humate enhances growth, digestive enzymes and immune enzyme activity of L. vannamei by improving the water microbial community.
Can dietary inclusion of montmorillonite clay help mitigate the farmed shrimp AHPND pandemic?
A commercial montmorillonite clay may help protect L. vannamei against production and economic losses from AHPND outbreaks in shrimp farms.
Study: Global warming above 2 degrees-C will lead to ‘irreversible loss in marine ecosystem habitability’
CSIRO determines that global warming above 2 degrees-C will decrease viable ocean habitats and will affect fishing grounds and productivity.
Robins McIntosh on everything you need to know about EHP and shrimp farming, part 2
Shrimp farming expert Robins McIntosh details the past decade of learning about the microsporidian EHP and how to mitigate its impact.
Building a better shrimp nursery, part 2
Shrimp nursery systems offer the shrimp industry an important opportunity to increase profits, by helping produce strong, healthy and uniform juveniles with significant potential for compensatory growth after their transfer for final pond grow-out. Biofloc technology and water quality are critical components of shrimp nursery systems.
Optimizing tilapia biofloc technology systems, part 2
Chambo Fisheries, one of the world’s largest tilapia biofloc tank farms and the largest in Africa, has developed its own, on-farm production of specialized feeds and procedures to optimize feed applications and feeding rates.
Estimating biofilter size for RAS systems
Controlling total ammonia-nitrogen (TAN) concentrations is the primary concern when sizing a biofilter for use in a recirculating aquaculture system. Sizing decisions are best based on previous experience with a given biofilter media in a specific biofilter configuration.
Aquaculture in Canada: status, perspectives
Canada exports farmed seafood products to more than 22 countries and is the main seafood supplier to the U.S. market. Finfish, primarily salmon, production is strong and shellfish production is growing, but diversification will be imperative to maintain competitiveness.
The Bottom Line: Feeds and water quality revisited
Uneaten or undigested feed and their metabolic byproducts contribute to declines of water quality in aquaculture systems. Accordingly, feed and feeding techniques require continuous review. Reducing overfeeding is an important opportunity for improving feed conversion ratios.
Natural feed additives enhance rainbow trout performance
Various additives, many of plant origin, have been explored to replace the use of antibiotics in aquafeed. The authors compared the performance of rainbow trout fed diets containing oxytetracycline or mineral additives yellow loess and Song-Gang stone powder.
Phytoplankton a crucial component of aquaculture pond ecosystems
Phytoplanktonic organisms, or microalgae, are very abundant in aquaculture ponds and have critical roles in these ecosystems, significantly influencing overall pond ecology and water quality. Proper management of phytoplankton populations is essential for successful aquaculture pond production.
Aquaculture 2016: Examining the industry’s role in the food system
A wide range of important topics was discussed at the Aquaculture 2016 conference and trade show in Las Vegas last week. Editor Emeritus Darryl Jory shares his notes from the four-day event, which occurs every three years.