Duck plague

Duck plague
Virus classification
Group:	Group I (dsDNA)
Family:	Herpesviridae
Genus:	Varicellovirus
Species:	Duck herpesvirus 1 (DHV-1)

Introduction

Blood-stained ice from the nasal discharge of a mallard dying from duck plague.

Duck plague (also known as duck viral enteritis) is a worldwide disease caused by duck herpesvirus 1 (anatid herpesvirus 1) of the family Herpesviridae that causes acute disease with high mortality rates in flocks of ducks, geese and swans. It is spread both vertically and horizontally - through contaminated water and direct contact. Migratory waterfowl are a major factor in the spread of this disease as they are often asymptomatic carriers of disease. The incubation period is three to seven days.^[1] DVE is not zoonotic.

Clinical Signs & Diagnosis

Sudden and persistent increases in flock mortality is often the first observation of DEV. Symptoms in individual birds include loss of appetite, decreased egg production, nasal discharge, increased thirst, diarrhea, ataxia, tremors and a drooped-wing appearance. Most ducks that show symptoms eventually die - mortality may reach 90 percent.^[2]

Due to the formation of diptheroid plaques on the eyelids and the mucosae of the respiratory system and gastrointestinal system the bird may show ophthalmic signs and refuse to drink.

Diagnosis can usually be made based on the clinical signs and postmortem findings:

On post-mortem, petechial haemorrhage in the conjunctivae, mucous membranes, trachea, syrinx and intestine are pathognomonic for DEV.

Treatment & Control

Vaccination for duck viral enteritis is now routine in the United States.^[1] Only attenuated vaccines are efficacious. Once DVE is present, depopulation, relocation and intensive disinfection are required to overcome an outbreak. Solid natural immunity develops in recovered birds.

Management practices such as preventing exposure to wild waterfowl and contaminated water and screening of new stock should be performed to prevent disease.

References

1. ^ ^{a b} Fenner, Frank J.; Gibbs, E. Paul J.; Murphy, Frederick A.; Rott, Rudolph; Studdert, Michael J.; White, David O. (1993). Veterinary Virology (2nd ed.). Academic Press, Inc. ISBN 0-12-253056-X. 
2. ^ Carter, G.R.; Flores, E.F.; Wise, D.J. (2006). "Herpesviridae". A Concise Review of Veterinary Virology. http://www.ivis.org/advances/Carter/Part2Chap11/chapter.asp?LA=1. Retrieved 2006-06-10. 

External links

• Duck Viral Enteritis, expert reviewed and published by Wikivet at http://en.wikivet.net/Duck_Viral_Enteritis, accessed 01/09/2011

This veterinary medicine–related article is a stub. You can help Wikipedia by expanding it.v · Categories: Herpesviruses Poultry diseases Animal virology Virus stubs Veterinary medicine stubs Wikimedia Foundation. 2010. Игры ⚽ Нужна курсовая? Hypernumber Getsuyosha Look at other dictionaries: duck plague — n. an acute, highly fatal disease of ducks caused by a herpesvirus * * * …   Universalium duck plague — n. an acute, highly fatal disease of ducks caused by a herpesvirus …   English World dictionary duck plague — an acute contagious herpesvirus infection of ducks, which may also affect geese and swans. It is characterized by vascular damage, with hemorrhage into the tissues and free blood in the body cavities, exanthematous lesions of the mucosa of the… …   Medical dictionary duck virus enteritis — duck plague …   Medical dictionary Laysan Duck — Taxobox name = Laysan Duck image caption = Male specimen in Cologne Zoo image width = 240px status = CR | status system = IUCN3.1 trend = up regnum = Animalia phylum = Chordata classis = Aves ordo = Anseriformes familia = Anatidae genus = Anas… …   Wikipedia Virus — A microorganism smaller than a bacteria, which cannot grow or reproduce apart from a living cell. A virus invades living cells and uses their chemical machinery to keep itself alive and to replicate itself. It may reproduce with fidelity or with… …   Medical dictionary Enzo Riccardo Campagnolo — Enzo Riccardo Campagnolo, veterinarian and epidemiologist, was born in Ithaca, New York on September 12 1958. His Italian ancestry can be traced back to the city of Fondi, in province of Latina, region of Lazio (Latium), Italy. He graduated from… …   Wikipedia Herpesviridae — Taxobox | color=violet name = Herpesviridae virus group = i familia = Herpesviridae subdivision ranks = Genera subdivision = Subfamily Alphaherpesvirinae Simplexvirus Varicellovirus Mardivirus Iltovirus Subfamily Betaherpesvirinae Cytomegalovirus …   Wikipedia Grippe Aviaire Chez L'animal — La forme clinique grave de la grippe aviaire était autrefois classée parmi les « pestes aviaires ». Elle a été renommée « infection à virus influenza hautement pathogène » suite à l identification de l agent causal, donc à l… …   Wikipédia en Français Grippe aviaire chez l'animal — La forme clinique grave de la grippe aviaire était autrefois classée parmi les « pestes aviaires ». Elle a été renommée « infection à virus influenza hautement pathogène » suite à l identification de l agent causal, donc à l… …   Wikipédia en Français 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”