Risk factors for Salmonella enterica subsp. enterica persistence in broiler-chicken flocks on Reunion Island

Etheves Marie Anais, Choisis N., Alvarez S., Dalleau F., Hascoat Jérémy, Gallard V., Cardinale Eric. 2021. Risk factors for Salmonella enterica subsp. enterica persistence in broiler-chicken flocks on Reunion Island. Heliyon, 7 (3):e06278, 6 p.

Quartile : Q2, Sujet : MULTIDISCIPLINARY SCIENCES

Résumé : This study was conducted to identify the main risk factors for Salmonella spp. persistence in broiler flocks in Reunion Island. Seventy broiler farms were surveyed from March 2016 to June 2018. Samples of fresh droppings were collected using gauze socks, and a questionnaire was completed with the farmers. Persistence was defined as an infection with the same serovar before and after cleaning and disinfection (C/D) of poultry houses. Salmonella spp. was found to persist on 27% of the farms. Cleaning concrete surrounding areas (OR = 0.23) and disinfecting silos (OR = 0.17) reduced the risk of pathogen persistence. An analysis of infections of pests found in the vicinity of the farms confirmed their role in the persistence of Salmonella spp. Fifteen percent of the pests were infected and the presence of mealworms in poultry litter (OR = 6.69) was found to increase the risk of Salmonella spp. persistence. We conclude that improved cleaning-disinfection, sanitary preventive measures and pest control in the poultry sector are needed to avoid the persistence of Salmonella spp. on broiler farms.

Mots-clés Agrovoc : Salmonella, facteur de risque, enquête sur les exploitations agricoles, volaille, épidémiologie, poulet, analyse du risque

Mots-clés géographiques Agrovoc : France

Mots-clés libres : Salmonella spp., Broiler, Persistence, Risk factors, Reunion Island

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Agences de financement européennes : European Commission

Auteurs et affiliations

• Etheves Marie Anais, CIRAD-BIOS-UMR ASTRE (REU)
• Choisis N., Groupement de défense sanitaire de La Réunion (REU)
• Alvarez S., Université de Montpellier (FRA)
• Dalleau F., Groupement de défense sanitaire de La Réunion (REU)
• Hascoat Jérémy, CIRAD-BIOS-UMR PVBMT (REU)
• Gallard V., Coopérative des Aviculteurs de La Réunion (REU)
• Cardinale Eric, CIRAD-BIOS-UMR ASTRE (FRA) ORCID: 0000-0002-3434-3541 - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/600227/)

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