Shrimp Disease control - Aquatic Animal Disease Report

1. White Spot Disease (WSD)




Pathogen: White spot syndrome virus (WSSV)

Species affected: Penaeus monodon and Litopenaeus vannamei (10-85 DOC)

Mortality rate: average to high, 100% in some cases within 10 d.

Clinical signs: lethargic or moribund shrimps aggregated at pond surface and edges, slow to erratic swimming behavior, overall body color often reddish, minute to large (0.5-2.0 mm diameter) white inclusions embedded in the cuticle;

Control measures: early harvest, strict isolation of infected ponds from movement, strengthened control of transportation, disinfection of infected ponds using Calcium hypochlorite (chlorine).

2. Yellowhead Disease (YHD)



Pathogen: Yellowhead virus (YHV)

Species affected: Litopenaeus vannamei

Mortality rate: could reach 100% in 2-5 days after infection.

Clinical signs: Affected shrimps showed sudden increase in feeding activity and abnormal growth, then loss of appetite; aggregated near the pond surface or at the edge of the ponds followed by mortalities. Body is discolored, cephalothorax/hepatopancreas swollen and turned to color yellow or brown. Tissues of most organs (gills, hepatopancreas, gut epidermis) were necrotic with degenerated cell nuclei. Shrimps were most sucsceptible at the age of 20-70 DOC (no infection in shrimps under 15 DOC). Fastest transmission of the disease was observed in shrimps at 20-30 DOC when mortality could reach 100% over 2-5 days of infection.

Control measures: Disinfection and discharge of contaminated water; movement and transportation control.

3. Acute Hepatopancreatic Necrosis Diseae (AHPND)




Pathogen: Vibrio parahaemolyticus with Phage A3

Species affected: Penaeus monodon and Litopenaeus vannamei (10-45 DOC)

Mortality rate: could reach 95% in intensive and semi-intensive farms;

Clinical signs: shrimps become lethargic with soft, darkened shells, mottling of the carapace. Pathology appears to be limited to hepatopancreas.

Control measures: strict isolation of infected ponds from movement and transport controls, disinfection of infected ponds using Calcium hypochlorite (chlorine).

About Vinnbio Products : The mission of Vinnbio Limited is to have day to day interaction with the farmers on the field; giving technical advice and solving the problems in relation to water quality and shrimp health.

It has set its sights on mastering the skills to meet the urgent needs of the end-consumer.
BIOTECHNOLOGY
We help in providing the farmers not just customized products but customized solutions, developing and evaluating products and processes for improving their satisfaction.

We are having solutions for Shrimp Disease control, Shrimp Biological Growth, Shrimp Health, Pond Maintenance and Bioflocculation to grow business in shrimp farming.

We are offer following shrimp biological products:

1. Bio Clean  : Eco Balancer - Control Ammonia
2. Aqua Pro   : Bio Security Product
3. Eco Bio      : Treatment of heavy organic sludge in pond soil and odor control.
4. Pond Pro   :  Control organic sludge in soil and water.
5. Hep Pro      : Life of Shrimp 

For more details please visit www.vinnbio.com

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