DISTRIBUTION OF GASTROINTESTINAL NEMATODE LARVAE OF SHEEP ON WINTER PASTURE

Authors

  • Tatiana Louise Gazda Universidade Federal do Paraná
  • Ricardo Guimarães Piazzetta Ministério da Agricultura, Pecuária e Abastecimento
  • João Ricardo Dittrich Universidade Federal do Paraná
  • Alda L. Gomes Monteiro Universidade Federal do Paraná
  • Vanete Thomaz Soccol Universidade Federal do Paraná

DOI:

https://doi.org/10.5216/cab.v13i1.4025

Keywords:

Parasithology

Abstract

The aim of this work was to study the dynamics of nematode larvae of sheep on winter pasture species. A completely randomized design was used. The treatments were composed by two different dry matter offers of each forage species (black oat 5% and 12%; ryegrass 10% and 20%). A total of 28 Suffolk female lambs were used. Pasture was taken every fifteen days and samples were separated into superior and inferior fractions and sent for counting and identification of parasite larvae. Lambs were evaluated each fifteen days for parasitological evaluations. Ryegrass (104.53 L/g MS) presented higher (p<0.05) contamination by helminth larvae per dry matter gram (L/g MS) than black oat forage (24.6 L/g MS). A linear increase in the amount of helminth larvae per gram of dry matter in the superior part of the plant was observed in black oat with lower dry matter content. The animals maintained in different dry matter offers of ryegrass and black oat did not present difference (p>0.05) in the worm burden. Otherwise a trend of linear increase in the number of fecal egg count was observed in the treatment with black oat with lower dry matter content. Sheep rearing in high stocking rates leads to parasitic infection of animals and environment contamination by pathogenic helminth larvae.

KEYWORDS: gastrointestinal nematodes; pasture; sheep; Trichostrongylidae.

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Author Biographies

Tatiana Louise Gazda, Universidade Federal do Paraná

Médica Veterinária graduada pela UFPR, Mestre em Ciências Veterinárias, Área de concentração Patologia Animal pela UFPR. tatiloui@gmail.com

Ricardo Guimarães Piazzetta, Ministério da Agricultura, Pecuária e Abastecimento

Médico Veterinário graduado pela UFPR, Mestre em Ciências Veterinárias, Área de concentração Produção Animal pela UFPR.

João Ricardo Dittrich, Universidade Federal do Paraná

Professor Doutor do Departamento de Zootecnia da UFPR.

Alda L. Gomes Monteiro, Universidade Federal do Paraná

Professora Doutora do Departamento de Zootecnia da UFPR.

Vanete Thomaz Soccol, Universidade Federal do Paraná

Professora Doutora do Departamento de Patologia Básica da UFPR.

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Published

2012-03-29

How to Cite

GAZDA, T. L.; PIAZZETTA, R. G.; DITTRICH, J. R.; MONTEIRO, A. L. G.; SOCCOL, V. T. DISTRIBUTION OF GASTROINTESTINAL NEMATODE LARVAE OF SHEEP ON WINTER PASTURE. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 13, n. 1, p. 85–92, 2012. DOI: 10.5216/cab.v13i1.4025. Disponível em: https://revistas.ufg.br/vet/article/view/4025. Acesso em: 22 nov. 2024.

Issue

Vol. 13 No. 1 (2012)

Section

Veterinary Medicine

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