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Avian Metapneumovirus Subtypes Circulating in Brazilian Vaccinated and Nonvaccinated Chicken and Turkey Farms

Published on Mar 1, 2011in Avian Diseases1.31
· DOI :10.1637/9501-081310-Reg.1
Jorge Luis Chacón10
Estimated H-index: 10
(USP: University of São Paulo),
Matheus Y. Mizuma2
Estimated H-index: 2
(USP: University of São Paulo)
+ 5 AuthorsAntonio José Piantino Ferreira16
Estimated H-index: 16
(USP: University of São Paulo)
Abstract
SUMMARY. Avian metapneumovirus (AMPV) causes turkey rhinotracheitis and is associated with swollen head syndrome in chickens, which is usually accompanied by secondary infections that increase mortality. AMPVs circulating in Brazilian vaccinated and nonvaccinated commercial chicken and turkey farms were detected using a universal reverse transcriptase (RT)-PCR assay that can detect the four recognized subtypes of AMPV. The AMPV status of 228 farms with respiratory and reproductive disturbances was investigated. AMPV was detected in broiler, hen, breeder, and turkey farms from six different geographic regions of Brazil. The detected viruses were subtyped using a nested RT-PCR assay and sequence analysis of the G gene. Only subtypes A and B were detected in both vaccinated and nonvaccinated farms. AMPV-A and AMPV-B were detected in 15 and 23 farms, respectively, while both subtypes were simultaneously found in one hen farm. Both vaccine and field viruses were detected in nonvaccinated farms. In five cases, ...
  • References (36)
  • Citations (9)
References36
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#1E. Catelli (UNIBO: University of Bologna)H-Index: 12
#2Cecchinato Mattia (UNIBO: University of Bologna)H-Index: 6
Last.C. J. Naylor (University of Liverpool)H-Index: 17
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#2Mengying Gao (Harbin Veterinary Research Institute)H-Index: 5
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#1Abdel-Azeem Sayed Abdel-Azeem (FU: Fayoum University)H-Index: 1
#2Giovanni Franzo (UNIPD: University of Padua)H-Index: 10
Last.Mattia Cecchinato (UNIPD: University of Padua)H-Index: 12
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#1Ra Cha (USDA: United States Department of Agriculture)H-Index: 2
#2Qingzhong Yu (USDA: United States Department of Agriculture)H-Index: 13
Last.L. Zsak (USDA: United States Department of Agriculture)H-Index: 28
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#1Márcia Bianchi dos Santos (State University of Campinas)H-Index: 3
#2Matheus C. Martini (State University of Campinas)H-Index: 4
Last.Clarice Weis Arns (State University of Campinas)H-Index: 16
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#1Mattia Cecchinato (UNIPD: University of Padua)H-Index: 12
#2Caterina Lupini (UNIBO: University of Bologna)H-Index: 8
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#1Haixia Hu (JLU: Jilin University)H-Index: 3
#2Jason P. Roth (USDA: United States Department of Agriculture)H-Index: 3
Last.Qingzhong Yu (USDA: United States Department of Agriculture)H-Index: 13
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