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Abstract

The aim of this retrospective study was to use RT-PCR and nucleotide sequencing analysis to determine the G (VP7 gene) and P (VP4 gene) genotypes of 155 Brazilian bovine rotavirus A (RVA) wild-type strains detected in diarrheic calves from all Brazilian geographical regions from 2006 to 2015. The...

Author(s)
Medeiros, T. N. da S.; Lorenzetti, E.; Alfieri, A. F.; Alfieri, A. A.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Comparative Immunology, Microbiology & Infectious Diseases, 2019, 64, pp 90-98
Abstract

The aim of this study was to perform the molecular characterization of the eleven genes of a G6P[5] bovine group A rotavirus (RVA) strain detected in a diarrhea outbreak from a vaccinated beef cattle herd. The outbreak affected 80% of calves between 15-30 days old. RVA was identified by RT-PCR in...

Author(s)
Medeiros, T. N. da S.; Lorenzetti, E.; Alfieri, A. F.; Alfieri, A. A.
Publisher
Springer-Wien, Wien, Austria
Citation
Archives of Virology, 2015, 160, 2, pp 447-451
Abstract

Bacteria classified in Mycoplasma (M. bovis and M. bovigenitalium) and Ureaplasma (U. diversum) genera are associated with granular vulvovaginitis that affect heifers and cows at reproductive age. The traditional means for detection and speciation of mollicutes from clinical samples have been...

Author(s)
Voltarelli, D. C.; Alcântara, B. K. de; Lunardi, M.; Alfieri, A. F.; Leme, R. de A.; Alfieri, A. A.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2018, 188, pp 137-143
AbstractFull Text

Bovine respiratory disease (BRD) is a complex multifactorial and multi-etiological disease entity that is responsible for the morbidity and mortality particularly in feedlot cattle from North America. Information relative to the occurrence of BRD in Brazil and the associated infectious agents are...

Author(s)
Headley, S. A.; Balbo, L. C. de; Alfieri, A. F.; Saut, J. P. E.; Baptista, A. L.; Alfieri, A. A.
Publisher
Universidade Estadual de Londrina, Londrina, Brazil
Citation
Semina: Ciências Agrárias (Londrina), 2017, 38, 1, pp 283-293
Abstract

This study describes the clinical, histopathological, and virological characterization of teat papillomatosis from Brazilian dairy cattle herds. Four types of bovine papillomavirus were identified (BPV6, 7, 9, and 10); one of these (BPV7) is being detected for the first time in Brazilian cattle.

Author(s)
Tozato, C. C.; Lunardi, M.; Alfieri, A. F.; Otonel, R. A. A.; Santis, G. W. di; Alcântara, B. K. de; Headley, S. A.; Alfieri, A. A.
Publisher
Sociedade Brasileira de Microbiologia, São Paulo, Brazil
Citation
Brazilian Journal of Microbiology, 2013, 44, 3, pp 905-909
Abstract

Histophilus somni is a Gram-negative bacterium that is associated with a disease complex (termed histophilosis) that can produce several clinical syndromes predominantly in cattle, but also in sheep. Histophilosis is well described in North America, Canada, and in some European countries. In...

Author(s)
Headley, S. A.; Pereira, A. H. T.; Balbo, L. C.; Santia, G. W. di; Bracarense, A. P. F. R. L.; Cunha Filho, L. F. C.; Schade, J.; Okano, W.; Pereira, P. F. V.; Morotti, F.; Preto-Giordano, L. G.; Marcasso, R. A.; Alfieri, A. F.; Lisbôa, J. A. N.; Alfieri, A. A.
Publisher
Sociedade Brasileira de Microbiologia, São Paulo, Brazil
Citation
Brazilian Journal of Microbiology, 2018, 49, 3, pp 591-600
Abstract

Porcine group C rotavirus (RVC) is recognised as an enteric pathogen in piglets worldwide. The VP6 gene of RVC is divided into seven I-genotypes. Genotypes I2 and I3 are found in human and bovine strains, respectively; the porcine strains are divided into the other five genotypes (I1, I4-I7). In...

Author(s)
Stipp, D. T.; Alfieri, A. F.; Lorenzetti, E.; Medeiros, T. N. da S.; Possatti, F.; Alfieri, A. A.
Publisher
Springer, Dordrecht, Netherlands
Citation
Virus Genes, 2015, 50, 1, pp 142-146
Abstract

Aichivirus B has been reported worldwide in calves and adult cattle with and without diarrhea. The aim of this study was to describe the molecular characteristics of the RdRP and VP1 genes of aichivirus B strains identified as the most frequent etiologic agent in a neonatal diarrhea outbreak in a...

Author(s)
Ribeiro, J.; Lorenzetti, E.; Ribeiro Júnior, J. C.; Medeiros, T. N. da S.; Alfieri, A. F.; Alfieri, A. A.
Publisher
Springer-Wien, Wien, Austria
Citation
Archives of Virology, 2017, 162, 12, pp 3691-3696
Abstract

Dairy calf rearing unit is a management system that is only recently being implemented by some milk producer's cooperatives in southern Brazil. However, aspects related to the health profile of the heifer calves that arrive in the rearing unit as well as about biosecurity practices and...

Author(s)
Alfieri, A. A.; Ribeiro, J.; Balbo, L. de C.; Lorenzetti, E.; Alfieri, A. F.
Publisher
Springer Berlin, Heidelberg, Germany
Citation
Tropical Animal Health and Production, 2018, 50, 8, pp 1937-1940
Abstract

Serological studies have characterized the presence of the bovine viral diarrhea virus (BVDV) infection in water buffalo herds worldwide. However, the molecular characterization of BVDV strains circulating in this animal species is uncommon. The aim of this study was to identify young water buffalo ...

Author(s)
Paixão, S. F.; Fritzen, J. T. T.; Crespo, S. E. I.; Pereira, H. de M.; Alfieri, A. F.; Alfieri, A. A.
Publisher
Springer Berlin, Heidelberg, Germany
Citation
Tropical Animal Health and Production, 2018, 50, 8, pp 1947-1950

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