Trade patterns facilitating highly pathogenic avian influenza virus dissemination in the free-grazing layer duck system in Vietnam - Université de Montpellier Accéder directement au contenu
Article Dans Une Revue Transboundary and emerging diseases Année : 2018

Trade patterns facilitating highly pathogenic avian influenza virus dissemination in the free-grazing layer duck system in Vietnam

Résumé

Highly pathogenic avian influenza (HPAI) viruses continue to threaten smallholder poultry producers in several Southeast Asian countries, including Vietnam. In particular , the free-grazing duck system has been repeatedly highlighted as a major risk factor for HPAI outbreaks. Free-grazing ducks, which scavenge on rice paddies after the harvest, account for a large proportion of the duck population in Vietnam and the wider Southeast Asian region. However, the structure and dynamics of the free-grazing duck production from farm to consumption has not been described for Vietnam. In this study, we used a value chain approach to provide a complete picture of the actors involved in the production and marketing of free-grazing duck eggs and spent layer ducks, as well as to investigate the governance structure of this food system. Group interviews and key informant interviews were conducted in two provinces located in the Mekong River Delta (MRD) and the Red River Delta (RRD). The results presented here highlight similarities and differences in farming and trade practices between the two provinces. The trade of spent layer ducks involved large volumes of live ducks being sent to China and Cambodia for consumption , generating a substantial risk of transboundary spread of pathogens, including HPAI viruses. We describe the major role of "duck yards", which act as hubs in the northbound trade of spent layer ducks. These yards should be considered as essential links in the value chain of spent layer ducks when considering HPAI surveillance and control. The veterinary authorities are only marginally involved in the value chain activities, and their influence could be strengthened by increasing surveillance activities for instance in duck yards. Last, we discuss the dynamics of the duck value chain and further implications for future HPAI management policies.
Fichier principal
Vignette du fichier
tbed.12697.pdf (1005.57 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-02872328 , version 1 (17-06-2020)

Identifiants

Citer

A. Meyer, T. Dinh, T. Han, D. Do, T. Nhu, et al.. Trade patterns facilitating highly pathogenic avian influenza virus dissemination in the free-grazing layer duck system in Vietnam. Transboundary and emerging diseases, 2018, 65 (2), pp.408-419. ⟨10.1111/tbed.12697⟩. ⟨hal-02872328⟩
36 Consultations
52 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More