Pathogenesis of rotavirus infection in turkey poults

Yason, Carmencita V.; Schat, K. A.

doi:10.1080/03079458608436304

Cited by 36 publications

(34 citation statements)

References 19 publications

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“…Shortening of villi in experimentally infected turkeys Hayhow & Saif 1993;Shawky et al 1993) and chickens were less severe when compared to RV infected calves and piglets. These differences may be due to differences in development of intestinal villi between infected mammals and birds (Yason & Schat 1986a, 1987. Mammalian RVs replicates in macrophages in blood vessels and lungs, and cause histopathological changes in cells of liver and lungs.…”

Section: Pathogenesismentioning

confidence: 99%

“…The immature crypt cells replace destroyed mature enterocytes that lack disaccharidases and have impaired absorptive ability, resulting in diarrhea (Moon 1978;Guy 1998;McNulty 2003). Yason & Schat (1986a) reported frothy fluids present in ceca of infected birds that caused impaired digestion as well as absorption of carbohydrates and sugars, resulting in fermentation by caecal bacteria, producing metabolites that absorb water into ceca by osmosis. Similarly, diarrhea may also occur as a result of mal-absorption and mal-digestion.…”

Section: Pathogenesismentioning

confidence: 99%

“…The DLPs then migrate to endoplasmic reticulum to obtain outer layer (VP4 and VP7), and thereby finally develop into a complete 'double capsid and triple-layered' infectious virus particle (Attoui et al 2012). Yason and Schat (1986a) had examined the pathogenesis of disease due to RV by infecting conventional and specific-pathogen-free (SPF) eggs of turkey poults of 7 to 10-days and 42-days-old. They observed remarkable infiltration of leukocytes in the lamina propria, and epithelial cell vacuolation along with villous surface scalloping at the tips.…”

Section: Pathogenesismentioning

confidence: 99%

See 2 more Smart Citations

Avian rotavirus enteritis – an updated review

Dhama

Saminathan

Karthik

et al. 2015

Veterinary Quarterly

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Section: Pathogenesismentioning

confidence: 99%

Section: Pathogenesismentioning

confidence: 99%

Section: Pathogenesismentioning

confidence: 99%

See 1 more Smart Citation

Avian rotavirus enteritis – an updated review

Dhama

Saminathan

Karthik

et al. 2015

Veterinary Quarterly

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“…A number of viruses (coronavirus, reovirus, astrovirus, enterovirus, rotavirus, and adenovirus), bacteria (Escherichia coli and species of Salmonella, Clostridium, Campylobacter and Enterococcus) and protozoa (coccidia, cryptosporidium) have been detected in poult enteritis complex-affected flocks (Saif et al, 1985;Edens et al 1997;Barnes et al, 2000;Heggen-Peay et al, 2002;Pakpinyo et al, 2002;Barnes & Guy, 2003;McFerran, 2003;Guy et al, 2004;Da Silva et al, 2008). Experimental inoculation of poult enteritis complex material positive for enteric viruses, alone or in combination, caused diarrhoea and retarded growth and/or mortality in poults (Yason & Schat, 1986;Guy et al, 2000;Spackman et al, 2005;Pantin-Jackwood et al, 2008b).…”

Section: Introductionmentioning

confidence: 99%

Detection and molecular characterization of enteric viruses in breeder turkeys

et al. 2010

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The present study was undertaken to detect and characterize enteric viruses (rotavirus, astrovirus, reovirus, and coronavirus) in breeder poults. Five turkey breeder flocks were selected. Faecal samples were collected from all flocks at 1 week of age and then every other week until the poults reached 9 weeks of age. The faecal samples were pooled in groups of five. Of the 193 pools (''samples'') tested by reverse transcriptionpolymerase chain reaction, 47.2%, 30.6%, and 10.4% samples were positive for astrovirus, rotavirus, and reovirus, respectively. No coronavirus was detected in any of the samples. Overall, 118 (61.1%) samples were positive for one or more enteric viruses. Of the 118 samples, 70 (59.3%) were positive for a single virus and 48 (40.7%) for a combination of viruses. Phylogenetic analysis based on the polymerase gene showed that astroviruses clustered into two groups with sequence homology ranging from 85.6 to 100% at the nucleotide level. Based on NSP4 gene sequences, rotaviruses clustered in a group and had 96.3 to 99.9% sequence homology at the nucleotide level. The reoviruses, based on their S4 gene sequences, clustered in a single group with sequence homology of 96.9 to 100%. Differing amino acid sequences of all three viruses may affect the antigenicity and/or pathogenicity of these viruses and may merit further study. The presence of two or three different viruses in combination may affect the dynamics of turkey health and disease.

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“…Rotaviruses isolated from turkey belonged to the G7, G17 and G22 genotypes. It suggested that cross-infection with avian rotaviruses between chicken and turkey had been reported and the reassortment between these avian rotaviruses might be occurred (Yason and Schat, 1986;Schumann et al, 2009). At the same time, AvRV-2 and other chicken rotavirus strains belonged to the genotype I11 except for Ch-2 strain, which was closely related with turkey strains belonging to the genotype I4.…”

Section: Discussionmentioning

confidence: 93%

Molecular characterization of avian rotavirus isolated in Korea

Wang¹,

Koo²,

Mo³

et al. 2013

Korean Journal of Veterinary Service

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An avian rotavirus (AvRV-2) was isolated from feces of broilers suffering from acute gastroenteritis in 2011. It was the first avian rotavirus isolated in Korea. To investigate the molecular characteristics of AvRV-2, the VP4, VP6, VP7 and NSP4 gene nucleotide sequences were determined and compared with those of rotavirus strains available in the GenBank database. The phylogenetic tree of VP7 gene showed that AvRV-2 had a high degree of nucleotide sequence homology (93.4% to 94.7%) with those of rotaviruses belonging to genotype G19 cluster. The phylogenetic tree of the VP4 gene revealed a high degree of nucleotide sequence homology (95.8% to 95.9%) with genotype P[30] rotaviruses isolated from chickens. The VP6 and NSP4 gene nucleotide sequences showed the highest identities with those of avian strains with 95.3% to 96.4% and 90.3% to 92.2%, respectively. Genetic characterization of the VP4, VP6, VP7 and NSP4 showed that AvRV-2 strain was most closely related to chicken rotavirus strains from Germany and Japan. Comparative nucleotide sequences and phylogenetic analysis indicated that avian rotavirus isolated from broilers belonged to genotype G19P [30] and it was the first report on avian rotavirus infection in Korea.

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Pathogenesis of rotavirus infection in turkey poults

Cited by 36 publications

References 19 publications

Avian rotavirus enteritis – an updated review

Avian rotavirus enteritis – an updated review

Detection and molecular characterization of enteric viruses in breeder turkeys

Molecular characterization of avian rotavirus isolated in Korea

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