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Abstract

Although prevalent, the exact impact of infectious diseases on reproductive failures remains to be determined. Among them, leptospirosis has commonly been reported as cause of abortions on outbreaks. Nevertheless, the majority of the animals present a chronic, silent form of the disease, which is...

Author(s)
Libonati, H. A.; Santos, G. B.; Souza, G. N.; Brandão, F. Z.; Lilenbaum, W.
Publisher
Springer Berlin, Heidelberg, Germany
Citation
Tropical Animal Health and Production, 2018, 50, 7, pp 1625-1629
Abstract

The aim of the present study was to describe the strategies of the control of an outbreak of leptospiral infection in dairy cattle in Maranhão State, Northeastern Brazil. In the period from January to July 2015, 18 (17%) out of 106 cows presented abortion, six (5.7%) stillbirth, and 12 (11.3%)...

Author(s)
Pimenta, C. L. R. M.; Costa, D. F. da; Silva, M. L. C. R.; Pereira, H. D.; Araújo Júnior, J. P.; Malossi, C. D.; Ullmann, L. S.; Alves, C. J.; Azevedo, S. S. de
Publisher
Springer Berlin, Heidelberg, Germany
Citation
Tropical Animal Health and Production, 2019, 51, 1, pp 237-241
AbstractFull Text

This is a cross-sectional study to assess the presence of antibodies in ruminants against selected pathogens associated with reproductive disorders in cattle in four Brazilian states, including the zoonotic agent Coxiella burnetii. The used tests were Virus Neutralization Assay for IBR and BVD,...

Author(s)
Zanatto, D. C. S.; Gatto, I. R. H.; Labruna, M. B.; Jusi, M. M. G.; Samara, S. I.; Machado, R. Z.; André, M. R.
Publisher
Colégio Brasileiro de Parasitologia Veterinária, São Paulo, Brazil
Citation
Brazilian Journal of Veterinary Parasitology, 2019, 28, 2, pp 245-257
Abstract

Leptospirosis is a cosmopolitan infectious disease that causes severe reproductive disorders in cattle, especially those related to abortion. This disease has rodents as main reservoirs; however, cattle are responsible for maintenance of the disease. Thus, the aim of this study was to identify the...

Author(s)
Fávero, J. F.; Araújo, H. L. de; Lilenbaum, W.; Machado, G.; Tonin, A. A.; Baldissera, M. D.; Stefani, L. M.; Silva, A. S. da
Publisher
Elsevier Ltd, Oxford, UK
Citation
Microbial Pathogenesis, 2017, 107, pp 149-154
Abstract

This study aimed to diagnose anti-Leptospira agglutinins in the serum of bovines that have never been vaccinated and were raised at Serra da Canastra in the state of Minas Gerais, Brazil. Screening and titration were performed by the microscopic agglutination test (MAT) using 15 Leptospira spp....

Author(s)
Santos, G. A. dos; Afonso, M. C. C.; Sousa, I. de O.; Gomes, A. L.; Santos, J. P. dos; Ferreira Júnior, Á.
Publisher
Universidade Federal Rural de Pernambuco, Recife, Brazil
Citation
Medicina Veterinária (Brasil), 2018, 12, 4, pp 270-275
AbstractFull Text

The present study investigated the occurrence of Leptospira spp. infection in cattle, feral cats and rodents in the Fernando de Noronha Island, Brazil. Blood samples were collected from 88 cattle, 200 feral cats and 150 rodents and the sera were screened by MAT (serogroups: Australis, Autumnalis,...

Author(s)
Morais, E. G. F. de; Magalhães, F. J. R.; Lima Filho, C. D. F. de; Brandespim, D. F.; Oliveira, P. R. F. de; Costa, D. F. da; Azevedo, S. S. de; Mota, R. A.
Publisher
Universidade Federal do Rio Grande do Sul, Faculdade de Veterinária, Porto Alegre, Brazil
Citation
Acta Scientiae Veterinariae, 2018, 46, pp 1610
Abstract

Cases of hemolytic anemia in beef cattle in an extensive breeding system in Mato Grosso and Rondônia have been monitored since 2008. The affected animals presented weakness, pale or icteric mucosas, blackened urine, prostration and anorexia. The outcome of these cases often is death, principally if ...

Author(s)
Rondelli, L. A. S.; Becker, M.; Caldeira, F. H. B.; Ribeiro, M.; Furlan, F. H.; Colodel, E. M.; Pescador, C. A.; Antoniassi, N. A. B.
Publisher
Colégio Brasileiro de Patologia Animal, Rio de Janeiro, Brazil
Citation
Pesquisa Veterinária Brasileira, 2018, 38, 8, pp 1475-1483
Abstract

Bovine leptospirosis causes substantial reproductive failure in cattle, mainly due to infections with serovar (sv) Hardjo infection. Notwithstanding, other serovars from the serogroup (sg) Sejroe could also have important roles in bovine leptospirosis. The objective was to investigate genetic...

Author(s)
Loureiro, A. P.; Hamond, C.; Pinto, P.; Bremont, S.; Bourhy, P.; Lilenbaum, W.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Research in Veterinary Science, 2016, 105, pp 249-253
Abstract

The aim of this study was to identify Leptospira in urine samples of cattle by direct sequencing of the secY gene. The validity of this approach was assessed using ten Leptospira strains obtained from cattle in Brazil and 77 DNA samples previously extracted from cattle urine, that were positive by...

Author(s)
Hamond, C.; Pestana, C. P.; Medeiros, M. A.; Lilenbaum, W.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Epidemiology and Infection, 2016, 144, 1, pp 72-75
AbstractFull Text

For a long time, it has been stated that urine leptospiral shedding is intermittent, which was observed primarily by culturing. However, culturing presents serious limitations, mainly low sensitivity, and failure on detection of leptospires cannot be neglected. PCR presents several advantages,...

Author(s)
Rocha, B. R.; Narduche, L.; Oliveira, C. S.; Martins, G.; Lilenbaum, W.
Publisher
Centro de Ciências Rurais, Universidade Federal de Santa Maria, Santa Maria, Brazil
Citation
Ciência Rural, 2017, 47, 8, pp e20170088

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