Farming technique

5 Best Practices for Shrimp Farming

: 1708

Americans eat millions of pounds of shrimp every year, but not many know what goes into farming the tasty crustaceans. A lot goes into the proper farming of shrimp, and expert farmers and engineers have improved the sustainability of shrimp farming over the past 40+ years. These improvements in aquaculture are known as best practices. Countries like Thailand in particular have led the shrimp aquaculture sustainability movement. A majority of shrimp farms in Thailand are small-to-medium sized, and are [...]

Read more...

A progressive approach to shrimp health management

: 2435

How water quality management, low stocking densities and the use of specialised feeds can consign the use of antibiotics in shrimp farming to history. The 400-hectare Sanolmedo shrimp farm in Ecuador ha been antibiotic-free since its inception over a year ago. The farm, located at the end of a long jungle road in Taura, is Corporación Lanec’s newest and most ambitious project to date and a select group of delegates from the nearby GOAL conference were able to visit this week to find out [...]

Read more...

Probiotics in Shrimp Aquaculture

: 5757

Shrimp ranks as the most favorite seafood among US consumers, and more than half of the shrimp in the market are coming from aquaculture. After decades of impressive growth, global shrimp aquaculture production in 2012 reached 3.78 million tons. However, catastrophic disease outbreaks have hindered the growing pace of the shrimp industry from time to time and caused tremendous economic loss, in billions of USD$ collectively. The most recent disease problem was the outbreak of the Early Mortality Syndrome (EMS) [...]

Read more...

Applications of Microalgal Biotechnology for Disease Control in Aquaculture

: 4157

Abstract: Aquaculture industries, and in particular the farming of fish and crustaceans, are major contributors to the economy of many countries and an increasingly important component in global food supply. However, the severe impact of aquatic microbial diseases on production performance remains a challenge to these industries. This article considers the potential applications of microalgal technology in the control of such diseases. At the simplest level, microalgae offer health-promoting benefits as a nutritional supplement in feed meal because of their [...]

Read more...

Dietary organic acids for farmed shrimp and fish

: 4238

Organic acids supplement in diets have recently been applied very common in aquaculture, because their benefits on the growth performance, nutrient utilization, immune response and disease resistance of farmed aquatic animals. Organic acids have a specific antimicrobial activity, which is pH dependent. Organic acids improve protein and energy digestibilities by their impact on the gastrointestinal microflora and reducing microbial competition, thus farmed shrimp/fish fed organic acid diet has significantly higher survival and growth. Furthermore, the use of formic acid is highly [...]

Read more...

Potential applications of bacteriophages for AHPND control

: 3746

Isolated phages evaluated effective in controlling major farmed shrimp disease, inhibiting bacterial growth Isolated phages tested are effective in controlling AHPND infection in farmed penaeid shrimp and inhibit bacterial growth. and inhibit bacterial growth. Photo by Darryl Jory. Acute hepatopancreatic necrosis disease (AHPND) is caused by a Vibrio bacterium (V. parahaemolyticus) that has caused substantial mortalities –… Potential applications of bacteriophages for AHPND control

Read more...

Brackish potential for a shrimp farming surge in India

: 3592

3D mapping of brackish-water aquaculture resources is to be undertaken in India, backed by satellite images and extensive ground surveys, in a move that could boost the country’s shrimp production. Early in the morning, Kunjumon and his team of five are busy getting their fishing nets and other paraphernalia ready. One team member is nervous, pointing out that he has not seen the ubiquitous sea birds that frequent the zone – expressing a belief that if the birds were around, [...]

Read more...

pirABvp-Bearing Vibrio parahaemolyticus and Vibrio campbellii Pathogens Isolated from the Same AHPND-Affected Pond Possess Highly Similar Pathogenic Plasmids

: 3841

Abstract: Acute hepatopancreatic necrosis disease (AHPND) is a severe shrimp disease originally shown to be caused by virulent strains of Vibrio parahaemolyticus (VPAHPND).  Rare cases of AHPND caused by Vibrio species other than V. parahaemolyticus have been reported.  Here we compare an AHPND-causing V. campbellii (VCAHPND) and a VPAHPND isolate from the same AHPND-affected pond.  Both strains are positive for the virulence gene pirABvp.  Immersion challenge test with Litopenaeus vannamei indicated the two strains possessed similar pathogenicity.  Complete genome comparison showed that the pirABvp-bearing plasmids in the [...]

Read more...

Characterization of a new member of Iridoviridae, Shrimp hemocyte iridescent virus (SHIV), found in white leg shrimp (Litopenaeus vannamei)

: 4866

A newly discovered iridescent virus that causes severe disease and high mortality in farmed Litopenaeus vannamei in Zhejiang, China, has been verified and temporarily specified as shrimp hemocyte iridescent virus (SHIV). Histopathological examination revealed basophilic inclusions and pyknosis in hematopoietic tissue and hemocytes in gills, hepatopancreas, periopods and muscle. Using viral metagenomics sequencing, we obtained partial sequences annotated as potential iridoviridae. Phylogenetic analyses using amino acid sequences of major capsid protein (MCP) and ATPase revealed that it is a new iridescent [...]

Read more...

A look at various intensive shrimp farming systems in Asia

: 4296

Commercial implementation of biofloc and RAS production systems help control shrimp farming diseases Intensive shrimp farm in Bali, Indonesia producing shrimp in a biofloc system (Taw and Setio, 2014). Before the mid-1990s, the major diseases affecting the farmed shrimp industry were of bacterial origin. But in Asia and from late 1994, the appearance of various,… See more at https://www.aquaculturealliance.org/advocate/intensive-shrimp-farming-asia/

Read more...