2016
DOI: 10.1590/s0100-736x2016000700006
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Detection of enteric viruses in pancreas and spleen of broilers with runting-stunting syndrome (RSS)

Abstract: RESUMO.-[Detecção de vírus entéricos em pâncreas e baço de frangos com a síndrome de nanismo e raquitismo (RSS).]A doença entérica é um problema multifatorial em galinhas que causa alterações gastrointestinais, conversão alimentar elevada e deficiência de crescimento.Nos últimos anos, os vírus entéricos foram associados à doença entérica; casos reportados mostraram a infecção de um único vírus e também infecções concomitantes durante os surtos sugerindo a presença de múltiplos fatores etiológicos nas doenças e… Show more

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Cited by 11 publications
(22 citation statements)
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References 30 publications
(36 reference statements)
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“…Enteric viruses are the etiological agents for a series of health disturbances for commercial chickens around the world. They cause severe economic losses for the poultry industry because they negatively affect productive parameters, causing growth retardation, low feed consumption, high mortality, poor egg and meat production, and Runting-Stunting Syndrome (RSS) [ 1 , 2 , 3 , 4 ]. These kinds of infections affect mostly young birds, but it is common to find viral infections in birds of all ages, including broilers, layers, and breeders [ 5 ].…”
Section: Introductionmentioning
confidence: 99%
“…Enteric viruses are the etiological agents for a series of health disturbances for commercial chickens around the world. They cause severe economic losses for the poultry industry because they negatively affect productive parameters, causing growth retardation, low feed consumption, high mortality, poor egg and meat production, and Runting-Stunting Syndrome (RSS) [ 1 , 2 , 3 , 4 ]. These kinds of infections affect mostly young birds, but it is common to find viral infections in birds of all ages, including broilers, layers, and breeders [ 5 ].…”
Section: Introductionmentioning
confidence: 99%
“…Similar results were found in the present study in which apparently healthy chickens also showed high viral concentrations [ 22 ]. ChPV has been detected in chickens independently of zootechnical interest and in many regions around the world with high chicken production, such as Europe [ 10 , 17 , 18 ], China [ 35 ], South Korea [ 36 ], North America [ 8 , 37 , 38 ], Brazil [ 9 , 16 , 24 , 25 ], and Ecuador [ 26 , 38 ]; however, its presence remains unknown in the rest of South America. The present study also showed that the virus was detected at earlier and later ages in chickens, demonstrating that virus dissemination can occur at any time [ 21 ].…”
Section: Discussionmentioning
confidence: 99%
“…All of these assays showed a high sensitivity for ChPV detection and quantification. In the Brazilian chicken flocks in the recent years, many outbreaks of RSS have been reported where ChPV has been detected, and the NS gene was sequenced, confirming that the sequences belonged to ChPV, identifying the virus in young and old chickens as early as the first day of infection [ 9 , 16 , 24 , 25 , 26 ]. Enteric diseases cause economic losses in poultry, the depreciation of poultry flocks, and increased susceptibility to other diseases, so a rapid, efficacious, affordable, reliable assay should be standardized for the diagnosis of the etiological agent [ 27 , 28 , 29 ].…”
Section: Introductionmentioning
confidence: 96%
“…Earlier studies on rats have shown the capacity of AvRVs to disseminate and replicate in different organs, such as the liver, spleen, and pancreas; however, the mechanism by which RV escapes the gastrointestinal tract and reaches other organs remains unknown [ 55 ]. Recently, the extra-intestinal presence of avian RVA in the pancreas and spleen of broilers with RSS has also been reported [ 26 ]. However, there is no such report for RVD.…”
Section: Identification and Epidemiologymentioning
confidence: 99%
“…AvRVs cause colossal losses to the poultry industry, as they result in decreased feed adsorption, ultimately leading to reduced weight gain [ 8 ]. Apart from the gastrointestinal tract, RVs have also been detected in the pancreas and spleen of broilers with runting and stunting syndrome (RSS) [ 26 ]. Runting and stunting syndrome, which is caused by many different agents, including reovirus, astrovirus, coronavirus etc., has a highly negative impact on poultry sector.…”
Section: Introductionmentioning
confidence: 99%