Detection of Rotaviruses and Intestinal Lesions in Broiler Chicks from Flocks with Runting and Stunting Syndrome (RSS)

Otto, Peter; Liebler-Tenorio, Elisabeth M.; Elschner, Mandy C.; Reetz, Jochen; Löhren, Ulrich; Diller, Roland

doi:10.1637/7511-020106r.1

Cited by 98 publications

(129 citation statements)

References 27 publications

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“…Most of RVs detected in turkeys belonged to groups A and D (19,20,21). Recently, bovine-origin rotavirus A was also found in turkeys in Brazil (2).…”

Section: Discussionmentioning

confidence: 93%

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Prevalence and molecular characteristics of rotaviruses from Polish turkey flocks between 2008 and 2011

Domańska-Blicharz

Jacukowicz

Minta

2013

Bulletin of the Veterinary Institute in Pulawy

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Between 2008 and 2011, commercial turkey flocks in Poland were examined for the presence of rotaviruses. Ten faecal swabs from each of 207 turkey flocks (turkeys aged one to 19 weeks) were collected in different regions of the country and tested using a PCR assay that targeted the NSP4 gene. The prevalence of rotavirus was 20.3% in the flocks tested. Phylogenetic analysis revealed a clear division into groups dependent on geographical origin of the analysed viruses. All Polish rotaviruses belonged to the European group. However, they were found to be genetically variable based on the sequence analysis. The most frequently identified rotaviruses belonged to RV-1 subgroup and two of them formed a distinct subgroup of RV-2. Rotaviruses were detected in healthy and enteric turkeys. The observed amino acid changes probably did not affect the group affiliation, nor the pathogenecity of the studied rotavirus strains.

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“…Most of RVs detected in turkeys belonged to groups A and D (19,20,21). Recently, bovine-origin rotavirus A was also found in turkeys in Brazil (2).…”

Section: Discussionmentioning

confidence: 93%

“…Most of the rotaviruses detected in birds, similarly to strains detected in humans, belong to group A. However, quite frequently rotavirus strains of group D and occasionally also groups F and G were also detected in avian species (16,19,25).…”

Section: Introductionmentioning

confidence: 93%

Prevalence and molecular characteristics of rotaviruses from Polish turkey flocks between 2008 and 2011

Domańska-Blicharz

Jacukowicz

Minta

2013

Bulletin of the Veterinary Institute in Pulawy

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“…Rotaviruses from groups A, D, F, and G have been detected in broiler flocks based on electropherotype analysis and serology (Elschner et al 2005, Otto et al 2006, and group D avian rotaviruses, also referred to as rotavirus-like virus, have been the most frequently reported rotavirus in poultry (Reynolds 1987a, MuNulty 2003. In previous studies, rotavirus was detected in chicken flocks described in the field as both good and poorly performing flocks with respect to enteric signs; this could be explained by the circulation of more than one avian rotavirus pathotype (Pantin-Jackwood et al 2008).…”

Section: Discussionmentioning

confidence: 99%

“…The higher rate (44.4%) of rotavirus detection in older ages than in younger ages (Table 2), is in agreement with the study published by Yason and Schat (1987) who established that, in general, older chickens and turkeys are more susceptible to rotavirus infection than younger birds. However, group D rotavirus infection has recently been implicated as a contributing factor in the development of RSS in 5-14 d old broilers in Germany (Otto et al 2006). The re-sults of this study pave the way for the future typing of rotaviruses in broiler chicken flocks.…”

Section: Discussionmentioning

confidence: 99%

Simultaneous detection of astrovirus, rotavirus, reovirus and adenovirus type I in broiler chicken flocks

Roussan¹,

Shaheen²,

Khawaldeh³

et al. 2012

Polish Journal of Veterinary Sciences

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Enteric diseases cause substantial economic losses to the poultry industry. Astroviruses, rotaviruses, reoviruses, and adenovirus type 1 have been reported as a significant cause of intestinal symptoms in poultry. In the present study, intestinal samples from 70 commercial broiler chicken flocks were examined for the presence of astroviruses, rotavirus, and reovirus by reverse transcription-polymerase chain reaction, and for the presence of group I adenovirus by polymerase chain reaction. Astroviruses were identified in 38.6% of samples tested. Both avian nephritis virus and chicken astrovirus were identified in the astrovirus positive flocks, where 74.1% of these flocks were positive for only one type of astrovirus, whereas, 25.9% of these flocks were positive for both types of astrovirus. Reoviruses, rotaviruses, and adenoviruses were identified in 21.4, 18.6, and 14.3% of these flocks, respectively. Concomitant infection with two or more viruses in the same flock were also prominent, where 5.7, 5.7, 2.9, 2.9, 1.4, and 1.4% of these flocks were positive with both astrovirus and rotavirus; astrovirus and adenovirus; astrovirus and reovirus; rotavirus and adenovirus; rotavirus and reovirus; and reovirus and adenovirus respectively. Moreover, 4.3 and 2.7% of these flocks were positive for astrovirus, reovirus, and adenovirus; and astrovirus, reovirus, and rotavirus, respectively. Further studies will focus on identifying specific viral factors or subtypes/subgroups associated with disease through pathogenesis studies, economic losses caused by infections and co-infections of these pathogens, and the costs and benefits of countermeasures.

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“…In chickens, pigeons and turkeys infections usually lead to mild nonfulminant diarrhoea, while in pheasants mortality can be as high as 30-50 %. In addition, infections have been associated in appearance of chronic runting and stunting syndrome (McNulty, 2003;Otto et al, 2006).…”

Section: Clinical Signsmentioning

confidence: 99%

Rotavirus infections in domestic animals

Chatzopoulos

Athanasiou

Spyrou

et al. 2017

J Hellenic Vet Med Soc

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ABSTRACT. Rotaviruses are major enteric pathogens of humans and a wide variety of animals. Rotavirus infections have a worldwide prevalence. The viral genome is composed of 11 double-stranded RNA segments with six structural and five or six non-structural proteins. Over 35,000 strains have been identified and classified into five main (A, B, C, D, E) and three additional tentative (F, G, H) serotype groups. A binary classification system has been proposed defining 'G' or 'P' types, with at least 27 G and 35 P genotypes reported thusfar. The virus is transmitted primarily by the faecal-oral and oral routes. After attachment, entry into the host cells occurs through direct entry, fusion or endocytosis. Main mechanisms of Rotavirus-induced diarrhoea involve extensive enterocyte losses and nutrient disdigestion and malabsorption. Clinical features of Rotavirus infections range from asymptomatic infections to fulminant disease leading to rapid death. In calves, lambs and kids, piglets and foals, salient sign of the disease is diarrhoea; diarrhoeic faeces are white, yellow or, in severe cases, blood-tinted or frank haemorrhagic. In dogs and cats, the infection occurs usually as self-limiting diarrhoea. Avian Rotavirus infections are characterized by enteritis, growth depression and/or growth retardation. Definitive diagnosis of the infection can only be achieved by laboratory tests, including electron microscopic examination, immunohistochemical examination, immunofluorescence, ELISA, latex agglutination and molecular techniques. There is no specific treatment against Rotavirus infections. Treatment is based in providing supportive care and managing clinical signs and potential complications. Effective vaccines, containing inactivated, recombinant or attenuated strains of the virus, are available. Challenge studies have shown the ease of the virus in cross-infecting various animal species; animal strains of the virus may cross species and infect humans. Due to the ability of the virus to overcome species barriers, animal strains may act as natural source of viral genomes, promoting mutations and creating new viral genotypes, whose virulence cannot be predictable.

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Detection of Rotaviruses and Intestinal Lesions in Broiler Chicks from Flocks with Runting and Stunting Syndrome (RSS)

Cited by 98 publications

References 27 publications

Prevalence and molecular characteristics of rotaviruses from Polish turkey flocks between 2008 and 2011

Prevalence and molecular characteristics of rotaviruses from Polish turkey flocks between 2008 and 2011

Simultaneous detection of astrovirus, rotavirus, reovirus and adenovirus type I in broiler chicken flocks

Rotavirus infections in domestic animals

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