Shrimp resistance & Vibrio load in the gut
Why “Vibrio present” does not always mean disease — and what a farm should do to keep shrimp healthy and finish the crop. An 18-page technical monograph.
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Than Vuong · Aquaculture knowledge
Shrimp & fish farming
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Shrimp · Practical guidance
Shrimp feed management in outdoor ponds for whiteleg shrimp
Shrimp · Practical guidance
TPD Management Protocol and Shrimp Recovery
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Striped catfish from nursery to grow-out: probiotics, digestive enzymes and feed protein and fat in new research
Research & trials
White feces in whiteleg shrimp: the latest research points to EHP, Vibrio and water temperature
Research & trials
Preventing white feces from the gut: two new trials feeding beneficial bacteria and metabolites taken from healthy shrimp
Research & trials
The Vibrio toxins behind EMS and TPD: the bacteria kill shrimp only when they carry the PirAB or VHVP-2 toxin genes
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White feces in whiteleg shrimp: the latest research points to EHP, Vibrio and water temperature
A review of 2021–2026 research: in Chinese outbreaks the white strings were mostly EHP spores; in Indonesia and China some Vibrio species surge in white-feces guts; water at 28–36 °C raises the risk. In the laboratory, shrimp needed both EHP and Vibrio to produce white feces.
Research & trials
Shrimp Reaches 69/kg in Just 54 Days — A Real Pond Case Study on Feed Control and 25% Water Exchange Reduction
A shrimp pond applying Than Vuong's environmental management and nutrition protocol achieved remarkable results: shrimp reached a size of 69 pieces per kilogram at 54 days of culture, with an FCR of 1.0 and a 25% reduction in water exchange compared to conventional methods. This article breaks down the complete protocol and the product combination behind these outcomes.
Research & trialsChanges in gut microbiota due to global warming. Regulating host health and disease status in poikilothermic animals
Global warming alters the gut microbiota of Pacific whiteleg shrimp by restructuring enterotypes, increasing the risk of diseases such as White Feces Syndrome (WFS) and hepatopancreatic necrosis syndrome. This study identifies temperature as the primary driver of microbial structure and proposes "enterotypes" as a key ecological indicator for predicting the health of poikilothermic animals in the context of climate change.
Research & trials
White Feces Management Protocol (EHP and Algae)
Shrimp feeding poorly and showing early signs of white feces are a warning of crop failure. Than Vuong shares a white feces management protocol for EHP and algae.
Practical guidance
Pond water quality is the most important for a successful crop, alongside pathogen-free seedstock.
Ensuring pond water quality plays a crucial role in the success of the culture cycle, alongside the use of disease-free seedstock. A balanced pond water ecosystem will help farmed shrimp grow healthily, reduce the risk of disease outbreaks, and optimize productivity. Below is an analysis of important factors and water quality control solutions to protect the pond.
Research insight
Balancing the Rearing Environment with Specialized Probiotics MAX 4000 NEW
Currently, water quality management in shrimp ponds is one of the primary concerns for shrimp farmers, as inadequate water quality is a major cause of shrimp diseases, slow growth, feed refusal, and mortality.
Technical article
How does salinity affect EHP infection rate in whiteleg shrimp?
EHP causes lesions in the hepatopancreatic tubule epithelial cells (HP), and its main clinical signs are slow growth leading to increased size variation. White fecal strings floating on the pond water surface and the presence of shrimp with white coloration in the gastrointestinal tract (GI tract) in these ponds are also associated with EHP. In the advanced stage of the disease, EHP-infected shrimp often exhibit soft shells, lethargy, reduced feed intake, an empty midgut, and chronic mortality.
Technical article
India: Improved giant freshwater prawn and fish polyculture yields high profits
Scientists in India have developed a genetically improved (GI) giant river prawn strain (Macrobrachium rosenbergii) with novel disease resistance, helping to create new income sources for aquaculture farmers in Assam.
Research insight
The importance of water environment stability
Water quality is one of the decisive factors for the success of a farming season, especially now that whiteleg shrimp are farmed using high-density super-intensive models, making the risks of disease, controlling water quality, and increasing the carrying capacity of the pond environment more challenging.
Technical articleControlling toxic algae in ponds
Pond water turns to undesirable algae such as blue-green algae, Euglena and dinoflagellates when nutrients build up: overfeeding, feces that are hard to siphon, weak pond microbes and source water carrying toxic algae that bloom once pumped in.
Technical article
Oxygen consumption rate of Pacific white shrimp in intensive ponds based on a dynamic model system
In intensive shrimp farming, oxygen consumption is a critical indicator significantly affecting the physiological status of farmed shrimp. This is the result of a study aimed at flexibly determining the oxygen consumption level of shrimp in intensive farming, as well as water quality variables and shrimp growth rate, based on a Dynamic Modeling System.
Research insight
Understanding nitrite and mitigating its presence in RAS and aquaculture ponds
Nitrite is both toxic and present in all closed aquaculture systems, so it is essential for aquaculture farmers to understand where it comes from and how to manage it.
Technical article43 articles remaining
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