Characteristics of two duck farming systems in the Mekong Delta of Viet Nam: stationary flocks and moving flocks, and their potential relevance to the spread of highly pathogenic avian influenza

Henning, Joerg, Henning, Kate A., Ngo, Thanh Long, Nguyen, Truc Ha, Le, Tri Vu and Meers, Joanne (2013) Characteristics of two duck farming systems in the Mekong Delta of Viet Nam: stationary flocks and moving flocks, and their potential relevance to the spread of highly pathogenic avian influenza. Tropical Animal Health and Production, 45 3: 837-848. doi:10.1007/s11250-012-0296-9


Author Henning, Joerg
Henning, Kate A.
Ngo, Thanh Long
Nguyen, Truc Ha
Le, Tri Vu
Meers, Joanne
Title Characteristics of two duck farming systems in the Mekong Delta of Viet Nam: stationary flocks and moving flocks, and their potential relevance to the spread of highly pathogenic avian influenza
Journal name Tropical Animal Health and Production   Check publisher's open access policy
ISSN 0049-4747
1573-7438
Publication date 2013-03-01
Year available 2012
Sub-type Article (original research)
DOI 10.1007/s11250-012-0296-9
Volume 45
Issue 3
Start page 837
End page 848
Total pages 12
Place of publication Dordrecht, Netherlands
Publisher Springer Netherlands
Collection year 2013
Language eng
Abstract Ducks are considered to play a major role in the spread of highly pathogenic avian influenza (HPAI) H5N1 in Viet Nam, but detailed information on their management is limited. We distinguished two different systems (1) stationary duck flocks that are not commonly driven to rice fields beyond village boundaries and that are confined overnight on farms and (2) moving duck flocks that are intentionally driven to rice fields beyond village boundaries, that are not returning to home farms for extended periods and that are housed overnight in temporary enclosures in rice paddies. A total of 115 stationary and 22 moving flock farmers were interviewed in 2007 in the Mekong Delta of Viet Nam. Moving duck flocks are larger than stationary flocks, which is indicative of their more commercial production. Moving flock farmers apparently are more aware of HPAI risks than stationary flock farmers, as their flocks are more likely fully vaccinated and have less contact with chickens during scavenging. On the other hand, the spread of HPAI virus between birds might be promoted by moving duck flocks as they repeatedly use transport vehicles and numerous rice paddies for scavenging and are often visited by hatchery owners in the field for purchasing duck eggs. In addition, long distances travelled by moving duck flocks might also result in widespread dissemination of HPAI virus. Further studies are necessary to describe HPAI prevalence and travel patterns of moving duck flocks and to explore the moving duck flock network in detail.
Keyword Ducks
Hpai
Avian Influenza
Viet Nam
Flock management
Stationary ducks
Moving ducks
H5N1
Evolution
Viruses
Poultry
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online: 21 October 2012

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
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