Description of Rotavirus F in Broilers from Brazilian Poultry Farms

Beserra, Laila Andreia Rodrigues; Gregori, Fábio

doi:10.1637/10747-121613-resnote.1

Cited by 10 publications

(9 citation statements)

References 11 publications

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“…In contrast to the observation that the AvRV-F species occurs less frequently in broilers (Beserra and Gregori 2014 ; Bezerra et al 2012 ; Otto et al 2006 ) and is excreted in lower titers (Mascarenhas et al 2016 ), in our study, the AvRV-F species was the most detected. Besides, in Brazil, AvRV-F had only been detected by RT-PCR assay with rates ranging from 9.4% to 18.5% (Beserra and Gregori 2014 ; Mascarenhas et al 2016 ). This is the first report to identify AvRV-F by electrophoretic profile on ss-PAGE in Brazil.…”

Section: Discussioncontrasting

confidence: 99%

Investigation of avian rotavirus infections in broiler chicks from commercial flocks with different performance efficiency indexes

et al. 2022

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The aim of this study was to investigate and compare the frequency of occurrence of avian rotavirus (AvRV) in poultry flocks according to its Performance Efficiency Index (PEI) scores. A total of 256 individual intestinal content samples of small sized-chicks (runts) with clinical signs of Runting Stunting Syndrome (RSS) and 24 clinically healthy chicks (control) were collected from twelve flocks in southern Brazil with different PEI scores: good ( n = 4, PEI mean = 365); moderate ( n = 4, PEI mean = 342) or poor ( n = 4, PEI mean = 319). Silver-stained polyacrylamide gel electrophoresis (ss-PAGE) was used to detect and identify the AvRV species followed by RT-PCR and sequencing of the partial VP6 gene for species confirmation. AvRV was detected in 83% (10/12) of the flocks and 23.4% (60/256) of the chicks. The electrophoretic migration patterns of viral dsRNA segments were compatible with AvRV species A (AvRV- A), D (AvRV-D) and F (AvRV-F) in 9 (15%), 18 (30%), and 33 (55%) of the positive chicks fecal samples, respectively. The AvRV species identified by ss-PAGE were confirmed by RT-PCR and partial sequence analysis of the VP6 gene. The AvRV detection rate was statistically higher ( p = 0.007) in chicks from flocks with poor PEI when compared to those with good PEI. The occurrence of AvRV-D and AvRV-F was statistically higher in 7 to 9 days old chicks, while AvRV-A was detected only in 13 to 14 days old animals.

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Section: Discussioncontrasting

confidence: 99%

Investigation of avian rotavirus infections in broiler chicks from commercial flocks with different performance efficiency indexes

et al. 2022

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“…RVs are widely distributed in Brazil, and have been described in animals (both young and adults) such as cattle 105 , birds 106 , and pigs 107,108 . In rodents, there is a single report of RVA associated with swine production 109 .…”

Section: /11mentioning

confidence: 99%

Synanthropic rodents as virus reservoirs and transmitters

Gravinatti

Barbosa

Soares

et al. 2020

Rev. Soc. Bras. Med. Trop.

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This review focuses on reports of hepatitis E virus, hantavirus, rotavirus, coronavirus, and arenavirus in synanthropic rodents (Rattus rattus, Rattus norvegicus, and Mus musculus) within urban environments. Despite their potential impact on human health, relatively few studies have addressed the monitoring of these viruses in rodents. Comprehensive control and preventive activities should include actions such as the elimination or reduction of rat and mouse populations, sanitary education, reduction of shelters for the animals, and restriction of the access of rodents to residences, water, and food supplies.

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“…Although RVA is predominant across all host species, RVD is more common in poultry [ 46 ]. RVF and RVG have only been occasionally reported [ 47 ]. After analysis by PAGE, the genomic RNA segments initially clustered into four regions, I to IV.…”

Section: Classificationmentioning

confidence: 99%

Avian Group D Rotaviruses: Structure, Epidemiology, Diagnosis, and Perspectives on Future Research Challenges

et al. 2017

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In 1981, a new virus (virus 132) was described for the first time with morphological and biochemical similarities to rotaviruses (RVs), but without antigenic similarity to any of the previously known rotavirus groups. Subsequently, it was re-designated as D/132, and formed a new serogroup among rotaviruses, the group D rotavirus (RVD). Since their identification, RVs are the leading cause of enteritis and diarrhea in humans and various animal species, and are also associated with abridged growth, particularly in avian species. Recently, RVD has been suggested to play a role in the pathogenesis of runting and stunting syndrome (RSS), alongside other viruses such as reovirus, astrovirus, coronavirus, and others, all of which cause colossal economic losses to the poultry industry. RVD has been reported from several countries worldwide, and to date, only one complete genome sequence for RVD is available. Neither an immunodiagnostic nor a vaccine is available for the detection and prevention of RVD infection. Despite our growing understanding about this particular group, questions remain regarding its exact prevalence and pathogenecity, and the disease-associated annual losses for the poultry industry. Here, we describe the current knowledge about the identification, epidemiology, diagnosis, and prevention of RVD in poultry.

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Description of Rotavirus F in Broilers from Brazilian Poultry Farms

Cited by 10 publications

References 11 publications

Investigation of avian rotavirus infections in broiler chicks from commercial flocks with different performance efficiency indexes

Investigation of avian rotavirus infections in broiler chicks from commercial flocks with different performance efficiency indexes

Synanthropic rodents as virus reservoirs and transmitters

Avian Group D Rotaviruses: Structure, Epidemiology, Diagnosis, and Perspectives on Future Research Challenges

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