Viral Agents Associated with Poult Enteritis in Croatian Commercial Turkey Flocks

Lojkić, Ivana; Biđin, Marina; Biđin, Zdenko; Mikec, Milivoj

doi:10.2754/avb201079010091

Cited by 13 publications

(9 citation statements)

References 30 publications

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“…Moreover, sequence comparisons and phylogenetic analysis of DAstV described by Fu et al (2009) suggest that astrovirus may transmit across ducks and turkeys. In Croatia, TastV-2 infection has been detected in turkey poults as one of the viral agents associated with PEMS (Lojkić et al, 2010). Furthermore, it would be also important to examine the occurrence of TAstV-1 infection in broiler breeder duck flocks; because this is the first finding of TAstV-1 in ducks, we do not know how common and prevalent this infection is.…”

Section: Discussionmentioning

confidence: 99%

Astroviruses associated with stunting and pre-hatching mortality in duck and goose embryos

et al. 2012

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The first detection of avian nephritis virus (ANV) in goose embryos and of turkey astrovirus-1 (TAstV-1) in duck embryos is described. Intestinal samples from duck and goose embryos from five duck and four goose flocks in Croatia were tested by polymerase chain reaction for the presence of ANV, TAstV-1, turkey astrovirus-2, chicken astrovirus, duck astrovirus and also for the presence of avian reovirus, Derzsy's disease virus and duck enteritis virus. The kidneys from duck and goose embryos were also tested for ANV, while liver samples were tested for duck astrovirus. Duck embryos were also tested to detect duck circovirus and goose embryos for the presence of goose circovirus and goose haemorrhagic polyomavirus. All embryos were in the final stage of incubation and were characterized by moderate to markedly retarded growth. ANV was confirmed in the intestines and kidneys of embryos from two duck and two goose flocks and TAstV-1 was found in embryos from two duck flocks. One duck flock was positive for both ANV and TAstV-1. No other viruses were found in tested flocks. Phylogenetic analysis based on the ANV polymerase gene fragment of ANV sequences detected in duck and goose embryos revealed greatest similarity (88.1 to 97.2%) with ANV isolates from chickens. Further, the existence of at least two types of ANV circulating in Croatian duck and goose flocks was confirmed. Based on the phylogenetic analysis of the portion of TAstV-1 polymerase gene, two detected TAstV-1 nucleotide sequences were 99.5% similar. Compared with six TAstV-1 sequences, Croatian sequences showed one unique nucleotide change. In addition to other possible causes of stunted growth and late embryonic death, these findings suggest that ANV and/or TAstV-1 infection may be a contributing factor in the pre-hatching mortality of ducklings and goslings.

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Section: Discussionmentioning

confidence: 99%

Astroviruses associated with stunting and pre-hatching mortality in duck and goose embryos

et al. 2012

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“…However, a few molecular studies are available revealing its genetic information. They were first identified in late 1990s (Pedley et al 1986;Theil et al 1986b) followed by subsequent reports from Europe (Lojki et al 2009;Johne et al 2011) and Asia (Ahmed & Ahmed 2006;Otto et al 2012). AvRVs of groups F and G have been identified occasionally (Bezerra et al 2012;Otto et al 2012).…”

Section: Introductionmentioning

confidence: 98%

Avian rotavirus enteritis – an updated review

Dhama

Saminathan

Karthik

et al. 2015

Veterinary Quarterly

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“…Recently, outbreaks of coronaviral enteritis have been reported from Arkansas and North Carolina in the USA with severe diarrhoea and mortality [ 19 , 83 , 100 , 106 ] indicating the importance of continuous epidemiological surveillance for this virus. TCoV appears to be absent from non-PEMS syndromes of PEC [ 44 , 45 , 62 , 68 , 75 , 105 ]. For example, no coronavirus was detected when 2,400 samples from poults showing clinical signs of enteritis were tested in California [ 105 ].…”

Section: Coronavirusmentioning

confidence: 99%

Enteric viruses in turkey enteritis

2014

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Gut health is very important to get maximum returns in terms of weight gain and egg production. Enteric diseases such as poult enteritis complex (PEC) in turkeys do not allow their production potential to be achieved to its maximum. A number of viruses, bacteria, and protozoa have been implicated but the primary etiology has not been definitively established. Previously, electron microscopy was used to detect the presence of enteric viruses, which were identified solely on the basis of their morphology. With the advent of rapid molecular diagnostic methods and next generation nucleic acid sequencing, researchers have made long strides in identification and characterization of viruses associated with PEC. The molecular techniques have also helped us in identification of pathogens which were previously not known. Regional and national surveys have revealed the presence of several different enteric viruses in PEC including rotavirus, astrovirus, reovirus and coronavirus either alone or in combination. There may still be unknown pathogens that may directly or indirectly play a role in enteritis in turkeys. This review will focus on the role of turkey coronavirus, rotavirus, reovirus, and astrovirus in turkey enteritis.

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Viral Agents Associated with Poult Enteritis in Croatian Commercial Turkey Flocks

Cited by 13 publications

References 30 publications

Astroviruses associated with stunting and pre-hatching mortality in duck and goose embryos

Astroviruses associated with stunting and pre-hatching mortality in duck and goose embryos

Avian rotavirus enteritis – an updated review

Enteric viruses in turkey enteritis

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