Comparison of indoor and outdoor fungi and particles in poultry units

Viegas, Carla; Viegas, Susana; Monteiro, Ana; Carolino, Elisabete; Sabino, Raquel; Veríssimo, Cristina

doi:10.2495/eid120511

Cited by 7 publications

(6 citation statements)

References 26 publications

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“…In the existing study, a low microbial count was seen in the outdoor of these facilities, moreover, outdoor fungal species were found different as compared to indoor. The similar results for fungus were also reported for both indoor and outdoor of these facilities by Viegas et al (2012). The results were also comparable to Crook et al (2008) and Lonc and Plew, (2011), who reported low microbial count in the outdoor as compared to the indoor of these facilities.…”

Section: Discussionsupporting

confidence: 89%

“…However, in the existing study, different types of fungi that were observed in the air samples were not recorded in the litter samples. This suggests different sources are contributing to fungal load in the air such as feed, bird's feather, excreta and skin dandruff (Gigli et al, 2005;Viegas et al, 2012). Moreover, it was also reported by De Lucca, (2007), that fungal species that were not recorded in litter samples may be due to excessive use of antibacterial medicines that suppress the growth of fungal species.…”

Section: Discussionmentioning

confidence: 77%

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Characterization of Bioaerosols in Controlled Environment Broiler Houses at Different Stages of Growth

Yasmeen¹,

Ali²,

Afzal³

et al. 2020

THE JAPS

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Poultry is critical in fulfilling the protein requirements of the growing populations across the world. However, concerns about the public and environmental health impacts of bioaerosols emissions from intensive poultry facilities are increasing. In the present study, characterization of bioaerosols from air and litter samples was carried out using both culture and non-culture based methods (Flow cytometry). Eighteen controlled environment broiler houses (with approximate 27000 birds) were investigated and categorized into three groups on the basis of age: group I (1-20 days), group II (21-30 days) and group III (31-40 days). The air samples were collected on a polycarbonate filter using a volumetric pump at a height of 1.5 m both indoor and outdoor of the houses. The litter samples were collected from the floor in sterilized falcon tubes. An increase in the bacterial and fungal count was observed with the age of birds for both indoor air and litter samples. The bacteria found in the litter were reflected in the air but for fungal count, no such association was noticed. Outdoor air samples showed low microbial count as compared to indoor ones. Higher concentrations were recorded for the indoor and outdoor environment with the flow cytometry as compared to culturebased methods.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 77%

Characterization of Bioaerosols in Controlled Environment Broiler Houses at Different Stages of Growth

Yasmeen¹,

Ali²,

Afzal³

et al. 2020

THE JAPS

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“…Some studies already reported fungal contamination in poultry facilities being a potential reservoir of fungi [ 69 , 70 , 71 , 72 ]. On the other hand, the role of bedding material regarding this subject remains little-explored [ 6 , 10 ].…”

Section: Discussionmentioning

confidence: 99%

Microbial Contamination of Bedding Material: One Health in Poultry Production

Gomes

Pena

Cervantes

et al. 2022

IJERPH

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In poultry farms, the mixture of bedding material, chicken excrement, and feathers seems to play an important role in pathogen development which may contribute to a potential risk of zoonosis, spreading the disease through the food chain. The purpose of this study was to analyze microbial contamination in bedding material and other matrices as well as potential antimicrobial resistances in chicken production facilities, and also to identify the sampling techniques and assays used. This study evidences the available data published, following the PRISMA methodology. Among the environmental samples, surface swabs were frequently used as a passive sampling technique. Morphological identification was performed in all studies. From all the matrices, the bedding material was the most contaminated. Most studies focused on bacterial contamination, with Salmonella sp. and Campylobacter sp. being commonly reported and three studies evidenced fungal contamination, being Penicillium sp.- and Aspergillus sp.-dominant. Mycotoxin assessment was only performed in one study, being identified in all bedding samples. The screening for bacteria resistance evidenced bacteria multidrug resistance; however, fungal susceptibility to azoles was not assessed in any of the analyzed studies. Briefly, this review evidences the microbial contamination in poultry facilities, emphasizing animals’ bedding as a potential source of contamination. Additionally, this study contributes to a sampling and analysis protocol proposal to assess the microbial contamination in this setting. Additionally, the knowledge gaps identified highlight the need of further research regarding microbial contamination and toxicological potential on animals’ bedding in order to mitigate the exposure in poultry pavilions.

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“…Many studies have reported on the air pollution inside and outside the chicken house caused by fungi and particles. Researchers found that the concentrations of indoor fungi and particles were higher than those of outdoor air, and the species of indoor and outdoor fungi were different ( 18 ). Although some fungi appear in indoor and outdoor air at the same time, there is no evidence that indoor fungal pollution comes from outdoor.…”

Section: Discussionmentioning

confidence: 99%

Aerosol Concentrations and Fungal Communities Within Broiler Houses in Different Broiler Growth Stages in Summer

Chen

Huang

et al. 2021

Front. Vet. Sci.

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Fungal aerosols in broiler houses are important factors that can harm the health of human beings and broiler. To determine the composite characteristics and changes in fungal aerosols in broiler houses during different broiler growth stages in summer. We analyzed the species, concentration and particle diameter distribution characteristics of the aerosols in poultry houses using an Andersen sampler and internal transcribed spacer 1 (ITS1) high-throughput sequencing technology. The concentration of fungal aerosols in the poultry houses increased as the ages of the broiler increased, which was also accompanied by gradual increases in the variety and diversity indices of the fungal communities in the air of the poultry houses. During the entire broiler growth period, the dominant genera in the fungal aerosols in the poultry houses included Trichosporon, Candida, Aspergillus, Cladosporium and Alternaria. These fungi may be harmful to the health of poultry and human beings, so permanent monitoring of microbial air quality in chicken houses is necessary.

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Comparison of indoor and outdoor fungi and particles in poultry units

Cited by 7 publications

References 26 publications

Characterization of Bioaerosols in Controlled Environment Broiler Houses at Different Stages of Growth

Characterization of Bioaerosols in Controlled Environment Broiler Houses at Different Stages of Growth

Microbial Contamination of Bedding Material: One Health in Poultry Production

Aerosol Concentrations and Fungal Communities Within Broiler Houses in Different Broiler Growth Stages in Summer

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