News features and technical articles about the evolution of aquaculture, one of the world’s fastest growing industries.

Testing shrimp growth in different biofloc systems

A study conducted with juvenile shrimp (Litopenaeus vannamei) reared in experimental biofloc systems used four treatments. Results indicate that differences in management and carbohydrate source can lead to substantial disparity in system function and production.


The importance of liming materials in aquaculture

Liming is an important management tool for preparing aquaculture ponds between and during production cycles. Several products are sometimes used in aquaculture for liming production ponds, including agricultural limestone, calcium silicate (CaSiO3) and sodium bicarbonate (NaHCO3). 

Innovation & Investment

Productores de vieiras de Maine adaptan técnica japonesa

Gracias en parte a una relación única de "estado hermano" que Maine comparte con la Prefectura de Aomori, una técnica de cultivo de vieira y sus equipos relacionados desarrollados en Japón se van vía a los Estados Unidos. El uso 

Innovation & Investment

GOAL 2016 preview: IPA technology catching on in China

Intensive pond aquaculture (IPA) technology, a floating, in-pond raceway system developed in the United States, is being adopted fast in China, just three years after its introduction, says Jim Zhang, aquaculture program manager for USSEC-China.  

Health & Welfare

Dietary organic acids used as growth promoters, anti-microbials

A feeding trial measured growth, nutrient utilization and faecal/gut bacterial counts in triplicate groups of red hybrid tilapia (Oreochromis sp.). Study results show that dietary organic acids can potentially replace OTC as a growth promoter and anti-microbial in tilapia feeds. 


New bio-processed protein concentrate shows potential

The performance of a new fishmeal replacement product was assessed for Pacific whiteleg shrimp juveniles using various experimental diets. Results indicate that this plant-based, fishmeal replacement product could be used to replace significant levels of fishmeal in shrimp aquafeed diets. 


Seafood Watch: Criticism of ratings programs outdated

Concerns raised recently by Dr. Claude Boyd may have been accurate a decade ago, but Seafood Watch Science Director Wendy Norden says the program has made significant progress and is indeed encouraging better performance in aquaculture. 


COFI 32 presents an opportunity to promote seafood

Writing from Rome at the United Nations’ Food and Agriculture Organization’s COFI 32 conference, Advocate contributor Roy Palmer solicits input on how to promote the health benefits of seafood consumption worldwide.   


Bridging the omega-3 gap with methane, microalgae

Innovation is leading to new ingredient options for renewable sources of omega-3 fatty acids. But Replicating long chain fatty acids is a tall order, Advocate contributor Lisa Duchene discovered. 


Biofloc consumption by Pacific white shrimp postlarvae

The stable isotopes technique with δ13C and δ15N can be used to determine the relevance of different food sources to shrimp feeding during the pre-nursery phase of Litopenaeus vannamei culture. During this trial, different types of commercial feed, microalgae, Artemia