Serum IgG level in calves experimentally infected with Haemonchus placei

Authors

  • Sandra Mayumi Nishi Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, São Paulo, SP
  • Leonardo José Richtzenhain Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, São Paulo, SP
  • 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/10.1590/S1413-95962002000200010

Keywords:

Haemonchus, Bovine, ELISA

Abstract

Two experiments were conducted to determine the serum antibody (IgG) dynamic in calves infected with Haemonchus placei. At Experiment 1, the IgG level during the first and second experimental infection were measured and at Experiment 2, the influence of dietary protein and immunization on IgG levels. The calves were immunized using successive H. placei infection truncated by the use of anthelmintic and challenged with 100,000 L3. The infected calves developed a high level of protection, with a significant reduction on fecal egg counts (EPG) at the second infection. However, at the same period, the IgG values continue to presented high levels, independent of the EPG decrease. It was also observed that calves submitted to an adequate protein diet presented a higher IgG level, suggesting an influence on immune response to the infection when compared to the low protein diet calves.

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Published

2002-01-01

Issue

Section

UNDEFINIED

How to Cite

1.
Nishi SM, Richtzenhain LJ, Gennari SM. Serum IgG level in calves experimentally infected with Haemonchus placei. Braz. J. Vet. Res. Anim. Sci. [Internet]. 2002 Jan. 1 [cited 2024 Jun. 15];39(2):107-10. Available from: https://www.revistas.usp.br/bjvras/article/view/5990