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Survey of Salmonella contamination in chicken layer farms in three Caribbean countries.
Adesiyun, Abiodun; Webb, Lloyd; Musai, Lisa; Louison, Bowen; Joseph, George; Stewart-Johnson, Alva; Samlal, Sannandan; Rodrigo, Shelly.
Afiliação
  • Adesiyun A; School of Veterinary Medicine, Faculty of Medical Sciences, University of the West Indies, St. Augustine, Trinidad and Tobago. abiodun.adesiyun@sta.uwi.edu.
  • Webb L; Institute of Public Health Studies, College of Veterinary Medicine, Nursing and Allied Health, Tuskegee University, Tuskegee, Alabama 36088, USA.
  • Musai L; Poultry Surveillance Unit, Ministry of Food Production, Port of Spain, Trinidad and Tobago.
  • Louison B; Ministry of Agriculture, Forestry and Fisheries, Ministerial Complex, Tanteen, St. George's Grenada, West Indies.
  • Joseph G; Veterinary and Livestock Services, Ministry of Agriculture, Food Production, Rural Development and Fisheries, Castries, St. Lucia.
  • Stewart-Johnson A; School of Veterinary Medicine, Faculty of Medical Sciences, University of the West Indies, St. Augustine, Trinidad and Tobago.
  • Samlal S; School of Veterinary Medicine, Faculty of Medical Sciences, University of the West Indies, St. Augustine, Trinidad and Tobago.
  • Rodrigo S; Department of Public Health and Preventive Medicine, School of Medicine, St. George's University, University Centre, Grenada, West Indies.
J Food Prot ; 77(9): 1471-80, 2014 Sep.
Article em En | MEDLINE | ID: mdl-25198837
This study was conducted to investigate the demography, management, and production practices on layer chicken farms in Trinidad and Tobago, Grenada, and St. Lucia and the frequency of risk factors for Salmonella infection. The frequency of isolation of Salmonella from the layer farm environment, eggs, feeds, hatchery, and imported day-old chicks was determined using standard methods. Of the eight risk factors (farm size, age group of layers, source of day-old chicks, vaccination, sanitation practices, biosecurity measures, presence of pests, and previous disease outbreaks) for Salmonella infection investigated, farm size was the only risk factor significantly associated (P = 0.031) with the prevalence of Salmonella; 77.8% of large farms were positive for this pathogen compared with 33.3 and 26.1% of medium and small farms, respectively. The overall isolation rate of Salmonella from 35 layer farms was 40.0%. Salmonella was isolated at a significantly higher rate (P < 0.05) from farm environments than from the cloacae. Only in Trinidad and Tobago did feeds (6.5% of samples) and pooled egg contents (12.5% of samples) yield Salmonella; however, all egg samples from hotels, hatcheries, and airports in this country were negative. Salmonella Anatum, Salmonella group C, and Salmonella Kentucky were the predominant serotypes in Trinidad and Tobago, Grenada, and St. Lucia, respectively. Although Salmonella infections were found in layer birds sampled, table eggs appear to pose minimal risk to consumers. However, the detection of Salmonella -contaminated farm environments and feeds cannot be ignored. Only 2.9% of the isolates belonged to Salmonella Enteritidis, a finding that may reflect the impact of changes in farm management and poultry production in the region.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Doenças das Aves Domésticas / Salmonella / Salmonelose Animal Tipo de estudo: Prevalence_studies / Risk_factors_studies Limite: Animals País/Região como assunto: Caribe / Caribe ingles / Grenada Idioma: En Revista: J Food Prot Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Trinidad e Tobago País de publicação: Estados Unidos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Doenças das Aves Domésticas / Salmonella / Salmonelose Animal Tipo de estudo: Prevalence_studies / Risk_factors_studies Limite: Animals País/Região como assunto: Caribe / Caribe ingles / Grenada Idioma: En Revista: J Food Prot Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Trinidad e Tobago País de publicação: Estados Unidos