Finding the agent causing hepatopancreatic necrosis on cultured shrimp

The Department of Animal Health (Ministry of Agriculture and Rural Development) said that with the support of international organizations and leading experts on aquatic pathology, the study of the agents causing the Septic syndrome has so far. Acute hepatopancreas (AHPNS) in farmed shrimp has had initial results.

According to the study, the causative agent is determined by Vibrio parahaemolytics.

This bacterium has been infected by a phage (phagc) that produces a powerful toxin causing AHPNS syndrome for farmed shrimp, and the bacterium does not carry the gene TDH (the gene that causes blood to directly resist temperature. ) capable of causing disease to humans.

Shrimp die from acute pancreatic necrosis syndrome. (Photo: Vicato.com)

In order to effectively prevent AHPNS Syndrome and reduce damage to aquaculturists, the Department of Animal Health recommends that the Department of Animal Health and Fisheries Sub-Departments of provinces and cities implement many measures.

Specifically, instructing shrimp farming establishments to buy breeds from prestigious hatcheries, quality assurance, quarantine certificate of veterinary agencies; use only quality food, while ensuring good environmental conditions, increasing resistance to shrimp.

In addition, newly released shrimps must be closely monitored, when shrimps have other signs, they must immediately notify the veterinary agencies for timely treatment; ensure period of emptying ponds periodically or switch to farming other objects to cut off the pathogen of the pathogen.

The Department of Animal Health, Aquaculture and Aquaculture should closely manage the transport of shrimp and commercial shrimp in the country to avoid spreading germs; strictly inspect and control the use of medicines, bio-preparations, microorganisms and chemicals used in aquaculture, which must be included in the list of permitted circulation of the Ministry of Agriculture and Rural Development.

According to the Department of Animal Health, since 2011, new diseases causing AHPNS Syndrome in farmed shrimp have caused great damage, over a large area in the southern provinces, especially serious in Soc Trang, Bac Lieu and Ca Mau.

AHPNS epidemics continue to occur in most coastal provinces across the country and are very complicated in 2012.

Department of Animal Health is continuing to coordinate with research agencies, experts at home and abroad, FAO project to support the study of agents, disease spread process, diagnostic process and preventive measures for disease. fruit.