Changes in fecal egg counts of gastrointestinal nematodes by ewes of four breeds in different reproductive status

Authors

  • Alessandro Francisco Talamini do Amarante "Universidade Estadual Paulista Júlio de Mesquita Filho, Instituto de Biociências, Departamento de Parasitologia.
  • Maria Aparecida Barbosa
  • Mauro de Oliveira
  • Edson Ramos Siqueira

DOI:

https://doi.org/10.1590/S1678-3921.pab1992.v27.3617

Keywords:

nematodes, parasitic disease, sheep, reproductive status, genetic resistance

Abstract

The experiment was conducted at Botucatu, SP, in order to verify changes in egg output of ewes of the Australian Merino, Ideal, Corriedale and Romney-Marsh breeds before the parturition, during the lactation and after the lamb weaning periods. The four breeds presented high egg counts in the late pregnancy and during the suckling periods. After weaning, egg counts decreased markedly. Romney-Marsh ewes showed a higher resistance to gastrointestinal nematodes in comparison to the other breeds. Haemonchus spp. was the most prevalent parasite in the trial.

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Published

1992-01-01

How to Cite

do Amarante, A. F. T., Barbosa, M. A., de Oliveira, M., & Siqueira, E. R. (1992). Changes in fecal egg counts of gastrointestinal nematodes by ewes of four breeds in different reproductive status. Pesquisa Agropecuaria Brasileira, 27(1), 47–51. https://doi.org/10.1590/S1678-3921.pab1992.v27.3617

Issue

v.27, n.1, jan. 1992

Section

VETERINARY SCIENCE