Detection and Molecular Characterization of Avian Rotaviruses in Broiler Farms in Guilan
Background: Avian rotaviruses are one of the important agents of enteritis in birds and have a worldwide distribution. These viruses have an important role in runting and stunting syndrome in chickens. Objectives: The aim of this study was detection and molecular characterization of avian rotaviruse...
Ausführliche Beschreibung
Autor*in: |
Fatemeh Poursafar [verfasserIn] Vahid Karimi [verfasserIn] Arash Ghalyanchi Langeroudi [verfasserIn] Hossein Hosseini [verfasserIn] Fatemeh Mousavi [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2019 |
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Schlagwörter: |
phylogenetic study ____________________________________________________________ |
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Übergeordnetes Werk: |
In: Iranian Journal of Veterinary Medicine - University of Tehran, 2019, 13(2019), 1, Seite 27-36 |
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Übergeordnetes Werk: |
volume:13 ; year:2019 ; number:1 ; pages:27-36 |
Links: |
Link aufrufen |
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DOI / URN: |
10.22059/ijvm.2018.265109.1004919 |
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Katalog-ID: |
DOAJ005883539 |
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520 | |a Background: Avian rotaviruses are one of the important agents of enteritis in birds and have a worldwide distribution. These viruses have an important role in runting and stunting syndrome in chickens. Objectives: The aim of this study was detection and molecular characterization of avian rotaviruses in broiler farms in Guilan province. Methods: In this study, 100 samples were collected on different farms from the intestines of healthy and diseased broiler chickens and tested by RT-PCR targeting of the NSP4 gene. Sequencing of NSP4 gene has been used for characterization of detected viruses. ResultS: Avian rotaviruses were detected in 46% of samples by RT-PCR. Partial sequencing of seven NSP4 genes and phylogenetic analysis indicated that the viruses belonged to group A avian rotaviruses and were 97.52% to 100% homologous. Sequence identity between viruses with previous chicken rotavirus sequences was 31.68% to 99.5%. In comparison with turkey rotavirus Ty-1 and pigeon rotavirus, the homology was 76.98% to 78.22% and 74.75% to 76.98%, respectively. Evident differences were detected between the rotaviruses studied and human and pig rotaviruses with homologies of 31.19% to 38.86% for pig and 47.77% to 48.02% for human viruses. Conclusions: This study was the first molecular characterization of avian rotaviruses in Iran. Results of this study showed that the group A avian rotaviruses are one of the considerable enteric pathogens in broiler chickens of Guilan province. Further study on the whole genome structure could elucidate the evolutionary process of avian rotaviruses circulating in Iran. | ||
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10.22059/ijvm.2018.265109.1004919 doi (DE-627)DOAJ005883539 (DE-599)DOAJf32d8735ebb14284add41cfeca8d0cec DE-627 ger DE-627 rakwb eng SF600-1100 Fatemeh Poursafar verfasserin aut Detection and Molecular Characterization of Avian Rotaviruses in Broiler Farms in Guilan 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background: Avian rotaviruses are one of the important agents of enteritis in birds and have a worldwide distribution. These viruses have an important role in runting and stunting syndrome in chickens. Objectives: The aim of this study was detection and molecular characterization of avian rotaviruses in broiler farms in Guilan province. Methods: In this study, 100 samples were collected on different farms from the intestines of healthy and diseased broiler chickens and tested by RT-PCR targeting of the NSP4 gene. Sequencing of NSP4 gene has been used for characterization of detected viruses. ResultS: Avian rotaviruses were detected in 46% of samples by RT-PCR. Partial sequencing of seven NSP4 genes and phylogenetic analysis indicated that the viruses belonged to group A avian rotaviruses and were 97.52% to 100% homologous. Sequence identity between viruses with previous chicken rotavirus sequences was 31.68% to 99.5%. In comparison with turkey rotavirus Ty-1 and pigeon rotavirus, the homology was 76.98% to 78.22% and 74.75% to 76.98%, respectively. Evident differences were detected between the rotaviruses studied and human and pig rotaviruses with homologies of 31.19% to 38.86% for pig and 47.77% to 48.02% for human viruses. Conclusions: This study was the first molecular characterization of avian rotaviruses in Iran. Results of this study showed that the group A avian rotaviruses are one of the considerable enteric pathogens in broiler chickens of Guilan province. Further study on the whole genome structure could elucidate the evolutionary process of avian rotaviruses circulating in Iran. avian rotaviruses broiler chickens iran nsp4 gene phylogenetic study ____________________________________________________________ Veterinary medicine Vahid Karimi verfasserin aut Arash Ghalyanchi Langeroudi verfasserin aut Hossein Hosseini verfasserin aut Fatemeh Mousavi verfasserin aut In Iranian Journal of Veterinary Medicine University of Tehran, 2019 13(2019), 1, Seite 27-36 (DE-627)720164818 (DE-600)2673384-5 22520554 nnns volume:13 year:2019 number:1 pages:27-36 https://doi.org/10.22059/ijvm.2018.265109.1004919 kostenfrei https://doaj.org/article/f32d8735ebb14284add41cfeca8d0cec kostenfrei https://ijvm.ut.ac.ir/article_70049_573ce90b84a553ed0553079b01c84561.pdf kostenfrei https://doaj.org/toc/2251-8894 Journal toc kostenfrei https://doaj.org/toc/2252-0554 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 13 2019 1 27-36 |
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10.22059/ijvm.2018.265109.1004919 doi (DE-627)DOAJ005883539 (DE-599)DOAJf32d8735ebb14284add41cfeca8d0cec DE-627 ger DE-627 rakwb eng SF600-1100 Fatemeh Poursafar verfasserin aut Detection and Molecular Characterization of Avian Rotaviruses in Broiler Farms in Guilan 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background: Avian rotaviruses are one of the important agents of enteritis in birds and have a worldwide distribution. These viruses have an important role in runting and stunting syndrome in chickens. Objectives: The aim of this study was detection and molecular characterization of avian rotaviruses in broiler farms in Guilan province. Methods: In this study, 100 samples were collected on different farms from the intestines of healthy and diseased broiler chickens and tested by RT-PCR targeting of the NSP4 gene. Sequencing of NSP4 gene has been used for characterization of detected viruses. ResultS: Avian rotaviruses were detected in 46% of samples by RT-PCR. Partial sequencing of seven NSP4 genes and phylogenetic analysis indicated that the viruses belonged to group A avian rotaviruses and were 97.52% to 100% homologous. Sequence identity between viruses with previous chicken rotavirus sequences was 31.68% to 99.5%. In comparison with turkey rotavirus Ty-1 and pigeon rotavirus, the homology was 76.98% to 78.22% and 74.75% to 76.98%, respectively. Evident differences were detected between the rotaviruses studied and human and pig rotaviruses with homologies of 31.19% to 38.86% for pig and 47.77% to 48.02% for human viruses. Conclusions: This study was the first molecular characterization of avian rotaviruses in Iran. Results of this study showed that the group A avian rotaviruses are one of the considerable enteric pathogens in broiler chickens of Guilan province. Further study on the whole genome structure could elucidate the evolutionary process of avian rotaviruses circulating in Iran. avian rotaviruses broiler chickens iran nsp4 gene phylogenetic study ____________________________________________________________ Veterinary medicine Vahid Karimi verfasserin aut Arash Ghalyanchi Langeroudi verfasserin aut Hossein Hosseini verfasserin aut Fatemeh Mousavi verfasserin aut In Iranian Journal of Veterinary Medicine University of Tehran, 2019 13(2019), 1, Seite 27-36 (DE-627)720164818 (DE-600)2673384-5 22520554 nnns volume:13 year:2019 number:1 pages:27-36 https://doi.org/10.22059/ijvm.2018.265109.1004919 kostenfrei https://doaj.org/article/f32d8735ebb14284add41cfeca8d0cec kostenfrei https://ijvm.ut.ac.ir/article_70049_573ce90b84a553ed0553079b01c84561.pdf kostenfrei https://doaj.org/toc/2251-8894 Journal toc kostenfrei https://doaj.org/toc/2252-0554 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 13 2019 1 27-36 |
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10.22059/ijvm.2018.265109.1004919 doi (DE-627)DOAJ005883539 (DE-599)DOAJf32d8735ebb14284add41cfeca8d0cec DE-627 ger DE-627 rakwb eng SF600-1100 Fatemeh Poursafar verfasserin aut Detection and Molecular Characterization of Avian Rotaviruses in Broiler Farms in Guilan 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background: Avian rotaviruses are one of the important agents of enteritis in birds and have a worldwide distribution. These viruses have an important role in runting and stunting syndrome in chickens. Objectives: The aim of this study was detection and molecular characterization of avian rotaviruses in broiler farms in Guilan province. Methods: In this study, 100 samples were collected on different farms from the intestines of healthy and diseased broiler chickens and tested by RT-PCR targeting of the NSP4 gene. Sequencing of NSP4 gene has been used for characterization of detected viruses. ResultS: Avian rotaviruses were detected in 46% of samples by RT-PCR. Partial sequencing of seven NSP4 genes and phylogenetic analysis indicated that the viruses belonged to group A avian rotaviruses and were 97.52% to 100% homologous. Sequence identity between viruses with previous chicken rotavirus sequences was 31.68% to 99.5%. In comparison with turkey rotavirus Ty-1 and pigeon rotavirus, the homology was 76.98% to 78.22% and 74.75% to 76.98%, respectively. Evident differences were detected between the rotaviruses studied and human and pig rotaviruses with homologies of 31.19% to 38.86% for pig and 47.77% to 48.02% for human viruses. Conclusions: This study was the first molecular characterization of avian rotaviruses in Iran. Results of this study showed that the group A avian rotaviruses are one of the considerable enteric pathogens in broiler chickens of Guilan province. Further study on the whole genome structure could elucidate the evolutionary process of avian rotaviruses circulating in Iran. avian rotaviruses broiler chickens iran nsp4 gene phylogenetic study ____________________________________________________________ Veterinary medicine Vahid Karimi verfasserin aut Arash Ghalyanchi Langeroudi verfasserin aut Hossein Hosseini verfasserin aut Fatemeh Mousavi verfasserin aut In Iranian Journal of Veterinary Medicine University of Tehran, 2019 13(2019), 1, Seite 27-36 (DE-627)720164818 (DE-600)2673384-5 22520554 nnns volume:13 year:2019 number:1 pages:27-36 https://doi.org/10.22059/ijvm.2018.265109.1004919 kostenfrei https://doaj.org/article/f32d8735ebb14284add41cfeca8d0cec kostenfrei https://ijvm.ut.ac.ir/article_70049_573ce90b84a553ed0553079b01c84561.pdf kostenfrei https://doaj.org/toc/2251-8894 Journal toc kostenfrei https://doaj.org/toc/2252-0554 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 13 2019 1 27-36 |
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10.22059/ijvm.2018.265109.1004919 doi (DE-627)DOAJ005883539 (DE-599)DOAJf32d8735ebb14284add41cfeca8d0cec DE-627 ger DE-627 rakwb eng SF600-1100 Fatemeh Poursafar verfasserin aut Detection and Molecular Characterization of Avian Rotaviruses in Broiler Farms in Guilan 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background: Avian rotaviruses are one of the important agents of enteritis in birds and have a worldwide distribution. These viruses have an important role in runting and stunting syndrome in chickens. Objectives: The aim of this study was detection and molecular characterization of avian rotaviruses in broiler farms in Guilan province. Methods: In this study, 100 samples were collected on different farms from the intestines of healthy and diseased broiler chickens and tested by RT-PCR targeting of the NSP4 gene. Sequencing of NSP4 gene has been used for characterization of detected viruses. ResultS: Avian rotaviruses were detected in 46% of samples by RT-PCR. Partial sequencing of seven NSP4 genes and phylogenetic analysis indicated that the viruses belonged to group A avian rotaviruses and were 97.52% to 100% homologous. Sequence identity between viruses with previous chicken rotavirus sequences was 31.68% to 99.5%. In comparison with turkey rotavirus Ty-1 and pigeon rotavirus, the homology was 76.98% to 78.22% and 74.75% to 76.98%, respectively. Evident differences were detected between the rotaviruses studied and human and pig rotaviruses with homologies of 31.19% to 38.86% for pig and 47.77% to 48.02% for human viruses. Conclusions: This study was the first molecular characterization of avian rotaviruses in Iran. Results of this study showed that the group A avian rotaviruses are one of the considerable enteric pathogens in broiler chickens of Guilan province. Further study on the whole genome structure could elucidate the evolutionary process of avian rotaviruses circulating in Iran. avian rotaviruses broiler chickens iran nsp4 gene phylogenetic study ____________________________________________________________ Veterinary medicine Vahid Karimi verfasserin aut Arash Ghalyanchi Langeroudi verfasserin aut Hossein Hosseini verfasserin aut Fatemeh Mousavi verfasserin aut In Iranian Journal of Veterinary Medicine University of Tehran, 2019 13(2019), 1, Seite 27-36 (DE-627)720164818 (DE-600)2673384-5 22520554 nnns volume:13 year:2019 number:1 pages:27-36 https://doi.org/10.22059/ijvm.2018.265109.1004919 kostenfrei https://doaj.org/article/f32d8735ebb14284add41cfeca8d0cec kostenfrei https://ijvm.ut.ac.ir/article_70049_573ce90b84a553ed0553079b01c84561.pdf kostenfrei https://doaj.org/toc/2251-8894 Journal toc kostenfrei https://doaj.org/toc/2252-0554 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 13 2019 1 27-36 |
allfieldsSound |
10.22059/ijvm.2018.265109.1004919 doi (DE-627)DOAJ005883539 (DE-599)DOAJf32d8735ebb14284add41cfeca8d0cec DE-627 ger DE-627 rakwb eng SF600-1100 Fatemeh Poursafar verfasserin aut Detection and Molecular Characterization of Avian Rotaviruses in Broiler Farms in Guilan 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background: Avian rotaviruses are one of the important agents of enteritis in birds and have a worldwide distribution. These viruses have an important role in runting and stunting syndrome in chickens. Objectives: The aim of this study was detection and molecular characterization of avian rotaviruses in broiler farms in Guilan province. Methods: In this study, 100 samples were collected on different farms from the intestines of healthy and diseased broiler chickens and tested by RT-PCR targeting of the NSP4 gene. Sequencing of NSP4 gene has been used for characterization of detected viruses. ResultS: Avian rotaviruses were detected in 46% of samples by RT-PCR. Partial sequencing of seven NSP4 genes and phylogenetic analysis indicated that the viruses belonged to group A avian rotaviruses and were 97.52% to 100% homologous. Sequence identity between viruses with previous chicken rotavirus sequences was 31.68% to 99.5%. In comparison with turkey rotavirus Ty-1 and pigeon rotavirus, the homology was 76.98% to 78.22% and 74.75% to 76.98%, respectively. Evident differences were detected between the rotaviruses studied and human and pig rotaviruses with homologies of 31.19% to 38.86% for pig and 47.77% to 48.02% for human viruses. Conclusions: This study was the first molecular characterization of avian rotaviruses in Iran. Results of this study showed that the group A avian rotaviruses are one of the considerable enteric pathogens in broiler chickens of Guilan province. Further study on the whole genome structure could elucidate the evolutionary process of avian rotaviruses circulating in Iran. avian rotaviruses broiler chickens iran nsp4 gene phylogenetic study ____________________________________________________________ Veterinary medicine Vahid Karimi verfasserin aut Arash Ghalyanchi Langeroudi verfasserin aut Hossein Hosseini verfasserin aut Fatemeh Mousavi verfasserin aut In Iranian Journal of Veterinary Medicine University of Tehran, 2019 13(2019), 1, Seite 27-36 (DE-627)720164818 (DE-600)2673384-5 22520554 nnns volume:13 year:2019 number:1 pages:27-36 https://doi.org/10.22059/ijvm.2018.265109.1004919 kostenfrei https://doaj.org/article/f32d8735ebb14284add41cfeca8d0cec kostenfrei https://ijvm.ut.ac.ir/article_70049_573ce90b84a553ed0553079b01c84561.pdf kostenfrei https://doaj.org/toc/2251-8894 Journal toc kostenfrei https://doaj.org/toc/2252-0554 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 13 2019 1 27-36 |
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Detection and Molecular Characterization of Avian Rotaviruses in Broiler Farms in Guilan |
abstract |
Background: Avian rotaviruses are one of the important agents of enteritis in birds and have a worldwide distribution. These viruses have an important role in runting and stunting syndrome in chickens. Objectives: The aim of this study was detection and molecular characterization of avian rotaviruses in broiler farms in Guilan province. Methods: In this study, 100 samples were collected on different farms from the intestines of healthy and diseased broiler chickens and tested by RT-PCR targeting of the NSP4 gene. Sequencing of NSP4 gene has been used for characterization of detected viruses. ResultS: Avian rotaviruses were detected in 46% of samples by RT-PCR. Partial sequencing of seven NSP4 genes and phylogenetic analysis indicated that the viruses belonged to group A avian rotaviruses and were 97.52% to 100% homologous. Sequence identity between viruses with previous chicken rotavirus sequences was 31.68% to 99.5%. In comparison with turkey rotavirus Ty-1 and pigeon rotavirus, the homology was 76.98% to 78.22% and 74.75% to 76.98%, respectively. Evident differences were detected between the rotaviruses studied and human and pig rotaviruses with homologies of 31.19% to 38.86% for pig and 47.77% to 48.02% for human viruses. Conclusions: This study was the first molecular characterization of avian rotaviruses in Iran. Results of this study showed that the group A avian rotaviruses are one of the considerable enteric pathogens in broiler chickens of Guilan province. Further study on the whole genome structure could elucidate the evolutionary process of avian rotaviruses circulating in Iran. |
abstractGer |
Background: Avian rotaviruses are one of the important agents of enteritis in birds and have a worldwide distribution. These viruses have an important role in runting and stunting syndrome in chickens. Objectives: The aim of this study was detection and molecular characterization of avian rotaviruses in broiler farms in Guilan province. Methods: In this study, 100 samples were collected on different farms from the intestines of healthy and diseased broiler chickens and tested by RT-PCR targeting of the NSP4 gene. Sequencing of NSP4 gene has been used for characterization of detected viruses. ResultS: Avian rotaviruses were detected in 46% of samples by RT-PCR. Partial sequencing of seven NSP4 genes and phylogenetic analysis indicated that the viruses belonged to group A avian rotaviruses and were 97.52% to 100% homologous. Sequence identity between viruses with previous chicken rotavirus sequences was 31.68% to 99.5%. In comparison with turkey rotavirus Ty-1 and pigeon rotavirus, the homology was 76.98% to 78.22% and 74.75% to 76.98%, respectively. Evident differences were detected between the rotaviruses studied and human and pig rotaviruses with homologies of 31.19% to 38.86% for pig and 47.77% to 48.02% for human viruses. Conclusions: This study was the first molecular characterization of avian rotaviruses in Iran. Results of this study showed that the group A avian rotaviruses are one of the considerable enteric pathogens in broiler chickens of Guilan province. Further study on the whole genome structure could elucidate the evolutionary process of avian rotaviruses circulating in Iran. |
abstract_unstemmed |
Background: Avian rotaviruses are one of the important agents of enteritis in birds and have a worldwide distribution. These viruses have an important role in runting and stunting syndrome in chickens. Objectives: The aim of this study was detection and molecular characterization of avian rotaviruses in broiler farms in Guilan province. Methods: In this study, 100 samples were collected on different farms from the intestines of healthy and diseased broiler chickens and tested by RT-PCR targeting of the NSP4 gene. Sequencing of NSP4 gene has been used for characterization of detected viruses. ResultS: Avian rotaviruses were detected in 46% of samples by RT-PCR. Partial sequencing of seven NSP4 genes and phylogenetic analysis indicated that the viruses belonged to group A avian rotaviruses and were 97.52% to 100% homologous. Sequence identity between viruses with previous chicken rotavirus sequences was 31.68% to 99.5%. In comparison with turkey rotavirus Ty-1 and pigeon rotavirus, the homology was 76.98% to 78.22% and 74.75% to 76.98%, respectively. Evident differences were detected between the rotaviruses studied and human and pig rotaviruses with homologies of 31.19% to 38.86% for pig and 47.77% to 48.02% for human viruses. Conclusions: This study was the first molecular characterization of avian rotaviruses in Iran. Results of this study showed that the group A avian rotaviruses are one of the considerable enteric pathogens in broiler chickens of Guilan province. Further study on the whole genome structure could elucidate the evolutionary process of avian rotaviruses circulating in Iran. |
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Detection and Molecular Characterization of Avian Rotaviruses in Broiler Farms in Guilan |
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Evident differences were detected between the rotaviruses studied and human and pig rotaviruses with homologies of 31.19% to 38.86% for pig and 47.77% to 48.02% for human viruses. Conclusions: This study was the first molecular characterization of avian rotaviruses in Iran. Results of this study showed that the group A avian rotaviruses are one of the considerable enteric pathogens in broiler chickens of Guilan province. 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