Antibody dynamics during gestation in cows naturally infected with Neospora caninum from four dairy herds in Brazil

Authors

  • José Márcio Sbruzzi Cardoso Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, São Paulo, SP
  • Sandra Mayumi Nishi Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, São Paulo, SP
  • Mikaela Renata Funada Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, São Paulo, SP
  • Marcos Amaku Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, São Paulo, SP
  • José da Silva Guimarãres Júnior Universidade Estadual de Londrina, Centro de Ciências Agrárias, Departamento de Medicina Veterinária Preventiva, Londrina, PR
  • Solange Maria Gennari Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, São Paulo, SP

DOI:

https://doi.org/10.11606/issn.1678-4456.bjvras.2009.26789

Keywords:

Neospora caninum, Antibody dynamics, Antibody titer, Pregnancy, Bovine

Abstract

Neospora caninum has been described as an important cause of abortion in bovine worldwide. The objective of the present study was to characterize patterns of antibody dynamics during gestation in dairy cows naturally infected with N. caninum. Twelve N. caninum naturally infected cows were selected from four dairy herds from Brazil and blood samples were monthly collected during pregnancy. Serum were tested for antibodies against N. caninum by Indirect Fluorescent Antibody Test (IFAT). During this period, all cows remained clinically normal and gave birth to healthy calves. The cows remained seropositives during the study and N. caninum IFAT titers ranged from 100 to 12,800; only animal 234 presented one negative result in the first month of pregnancy. Significant differences of N. caninum IFAT titers were found between months from 1 to 9 of pregnancy by the Friedman Test (P<0.001). The statistical analysis showed an increase of N. caninum antibody titers from second and third trimester of pregnancy in relation to first trimester. High titers were observed in few cows after month fifth of pregnancy. This study showed a variation of specific antibody levels in seropositive cows during different gestational periods. The highest values were observed during the second and third trimester. The antibody increase after the fifth month of gestation was not associated to abortion.

Downloads

Download data is not yet available.

Published

2009-10-01

How to Cite

Cardoso, J. M. S., Nishi, S. M., Funada, M. R., Amaku, M., Guimarãres Júnior, J. da S., & Gennari, S. M. (2009). Antibody dynamics during gestation in cows naturally infected with Neospora caninum from four dairy herds in Brazil. Brazilian Journal of Veterinary Research and Animal Science, 46(5), 395-399. https://doi.org/10.11606/issn.1678-4456.bjvras.2009.26789

Issue

Section

UNDEFINIED

Most read articles by the same author(s)

<< < 1 2 3 4 5 > >>