tetano
Editor, Senior Moderator
Vet J. 2013 Sep 18. pii: S1090-0233(13)00429-2. doi: 10.1016/j.tvjl.2013.09.010. [Epub ahead of print]
Cluster randomised trial of the impact of biosecurity measures on poultry health in backyard flocks.
Conan A, Goutard FL, Holl D, Ra S, Ponsich A, Tarantola A, Sorn S, Vong S.
Source
Epidemiology and Public Health, Institut Pasteur du Cambodge, R?seau International des Instituts Pasteur, Phnom Penh, Cambodia. Electronic address: aconan@hotmail.fr.
Abstract
In Cambodia, most poultry are raised in backyard flocks with a low level of biosecurity, which increases the risk of spread of infectious diseases. The aim of this study was to evaluate the effectiveness of a practical biosecurity intervention based on affordable basic measures. A cluster randomised trial was conducted in 18 villages in Cambodia from November 2009 to February 2011. Generalised estimating equations were used to test the association between the intervention and mortality rates in flocks of chickens and ducks. Mortality rates in chicken flocks in intervention villages (mean 6.3%, range 3.5-13.8%, per month) were significantly higher than in control villages (mean 4.5%, range 2.0-9.7%, per month; P<0.01). Mortality rates in duck flocks in intervention villages (mean 4.1%, range 1.9-7.9%, per month) were significantly higher than in control villages (mean 2.8%, range 0.6-8.0%, per month; P<0.01). Despite good compliance among poultry owners, the biosecurity intervention implemented in this study was not associated with improvements in poultry mortality rates. These findings suggest that basic biosecurity measures may not suffice to limit the spread of infectious diseases in backyard poultry flocks in Cambodia.
Copyright ? 2013 Elsevier Ltd. All rights reserved.
KEYWORDS:
Avian influenza virus, Backyard poultry, Biosecurity, Cluster randomised trial, Newcastle disease virus
PMID:
24183714
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/24183714
Cluster randomised trial of the impact of biosecurity measures on poultry health in backyard flocks.
Conan A, Goutard FL, Holl D, Ra S, Ponsich A, Tarantola A, Sorn S, Vong S.
Source
Epidemiology and Public Health, Institut Pasteur du Cambodge, R?seau International des Instituts Pasteur, Phnom Penh, Cambodia. Electronic address: aconan@hotmail.fr.
Abstract
In Cambodia, most poultry are raised in backyard flocks with a low level of biosecurity, which increases the risk of spread of infectious diseases. The aim of this study was to evaluate the effectiveness of a practical biosecurity intervention based on affordable basic measures. A cluster randomised trial was conducted in 18 villages in Cambodia from November 2009 to February 2011. Generalised estimating equations were used to test the association between the intervention and mortality rates in flocks of chickens and ducks. Mortality rates in chicken flocks in intervention villages (mean 6.3%, range 3.5-13.8%, per month) were significantly higher than in control villages (mean 4.5%, range 2.0-9.7%, per month; P<0.01). Mortality rates in duck flocks in intervention villages (mean 4.1%, range 1.9-7.9%, per month) were significantly higher than in control villages (mean 2.8%, range 0.6-8.0%, per month; P<0.01). Despite good compliance among poultry owners, the biosecurity intervention implemented in this study was not associated with improvements in poultry mortality rates. These findings suggest that basic biosecurity measures may not suffice to limit the spread of infectious diseases in backyard poultry flocks in Cambodia.
Copyright ? 2013 Elsevier Ltd. All rights reserved.
KEYWORDS:
Avian influenza virus, Backyard poultry, Biosecurity, Cluster randomised trial, Newcastle disease virus
PMID:
24183714
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/24183714