A Preliminary Investigation of <i>Salmonella</i> Populations in Indigenous Portuguese Layer Hen Breeds

The sustainability of agroecological systems, biodiversity protection, animal welfare, and consumer demand for higher quality products from alternative and extensive farming methods have reinforced interest in local breeds that are well adapted to low-input environments. However, food safety needs t...

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Bibliographic Details
Main Authors: Carla Miranda, Sónia Batista, Teresa Letra Mateus, Madalena Vieira-Pinto, Virgínia Ribeiro, Rui Dantas, Nuno V. Brito
Format: Article
Language:English
Published: MDPI AG 2023-11-01
Series:Animals
Subjects:
Online Access:https://www.mdpi.com/2076-2615/13/21/3389
Description
Summary:The sustainability of agroecological systems, biodiversity protection, animal welfare, and consumer demand for higher quality products from alternative and extensive farming methods have reinforced interest in local breeds that are well adapted to low-input environments. However, food safety needs to be safeguarded to reinforce consumer confidence. The aim of this study was to conduct a preliminary investigation on the occurrence of <i>Salmonella</i> spp. in eggshells, hen’s cloaca, and litter materials from autochthonous Portuguese laying hens raised in a semi-extensive system for small-scale production. A total of 279 samples from 31 flocks belonging to 12 farms were obtained, with 63 samples from the “Preta Lusitânica” breed, and 72 samples each from the remaining autochthonous breeds, namely, “Branca”, “Amarela”, and “Pedrês Portuguesa”. None (0%) of the samples analyzed were positive for <i>Salmonella</i> spp. To the best of our knowledge, these are the first results of <i>Salmonella</i> evaluation from hen’s cloaca, eggshells, and litter materials in autochthonous Portuguese chickens, suggesting that a semi-extensive production system can contribute to better food security and a lower risk to public health and the environment.
ISSN:2076-2615