Fenômeno "Post-Lambing" em ovelhas parturientes naturalmente infectadas por nematóides parasitos

Orivaldo Tenório de Vasconcelos, Uriel Franco Rocha, Alvimar José da Costa, Orlando Ferrari

Abstract


Thirty ewes from the North Region of São Paulo, State, Brasil were submitted fortnightly to faecal nematode egg counts (EPG) during twelve months. The main objective was the study of the evolution of the variable EPG during the year and eventual correlation with either the lambing time and with environmental conditions. Twenty of the ewes lambed twice during the twelve months period of observation. The results showed that the time of lambing correlated better with egg count rises than with environmental seasonal changes. Around 4 to 6 weeks after lambing there was a conspicuous EPG rise for pratically all the ewes. Coprocultures ponted out that Haemonchus was the nematode genus wich contributed most to the post-lambing rise.

 


Keywords


Nematodes; Post-lambing rise; Ewes; São Paulo.



DOI: http://dx.doi.org/10.5433/1679-0359.1984v5n16p15

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional