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

Comments

Post a Comment

Popular posts from this blog

Importance Components of BioSecurity

Image
Biosecurity involves following strict management protocols to prevent specific pathogens from entering a system or reducing the numbers. A good understanding of pathogen reservoirs is important. Quarantine, sanitation and disinfection are all important components of biosecurity . Quarantine , defined as the isolation of an organism or group of organisms to prevent the introduction or spread of infectious disease, is a standard procedure that is extremely important in aquaculture. In practical terms, quarantine is a standard set of procedures that should be observed to prevent the introduction of pathogens or diseases into a population of fish, prawn and shrimp in aquaculture. The quarantine protocols should be strictly adhered and should follow as many of the following protocols as are practical: testing of a sample of shrimp, prawn and fish prior to bringing them onto the facility. all-in, all-out stocking procedures. isolation or separation from other populations for ...
Read more

An overview of L. vannamei shrimp aquaculture

Image
Litopenaeus vannamei   is the most commonly cultured shrimp in Latin America and Southeast Asia, representing over 90 % of total shrimp production. India with its 8,118 km of coastline and 1.24 million Ha of brackish water area is the second shrimp producer in the world, with Andhra Pradesh being India’s largest vannamei farming area. Andra Pradesh, situated on the southern coast of the country, has 974 km of coastline and 175,000 Ha of brackish water. Andhra Pradesh has gradually increased its share in total marine exports of the country, with the United States and Vietnam as the main export markets. Currently, the state’s  L. vannamei aquaculture  is facing different issues and challenges to achieve sustainability related to diseases outbreaks, lack of availability of quality seed, high feed costs, unauthorized farming, international price fluctuations, less demand in the domestic market, and others. If farmers implement Better Management Practices (BMP) and  b...
Read more

The importance of biosecurity and disinfection in aquaculture

Image
The world's demands for high quality aquaculture products make control of diseases increasingly important. Good Bio security measures are vital to maintaining healthy animals, to reducing the risk of acquiring diseases in aquaculture facilities and to harvest high quality good yield. Biosecurity Biosecurity can be defined as ‘the measures and methods adopted to secure a disease free environment in all phases of aquaculture practices (i.e. hatcheries, nurseries, growout farms) for improved profitability’. Biosecurity protocols are intended to maintain the "security" of a facility (i.e., prevent entry of, or reduce overall numbers prior to entry) with respect to certain diseasecausing organisms (parasites, bacteria, viruses and fungi) that may not be present in a particular system. In short, food producers have consumer safety as their primary target. If the food they produce is not safe, no economic model works. The second and equally important target ...
Read more