Observations on the translation process of trichostrongylid nema-todes.

Authors

  • J. Pacenovsky
  • A. Kloosterman
  • H.W. Antonisse

DOI:

https://doi.org/10.18174/njas.v19i2.17322

Abstract

A series of artificial faecal pats containing a mixture of eggs of Cooperia spp. and Ostertagia spp. at 500 e.p.g. were deposited on grassland every 2 weeks through the grazing season. The grassland had carried no stock for at least 10 years. Weekly larval counts on grass in the immediate surroundings of the pats indicated that larval concentrations are positively related to soil temperature and rainfall, and negatively to air temperature and radiation. Maximum numbers of larvae occurred after 9 to 10 weeks, suggesting that it can be extremely dangerous to return to pasture when the grass has regrown after a previous grazing. Faecal pats deposited in autumn were the main source of overwintered infection. The experiment may be considered as a model of a pasture grazed continuously by calves which have a constant egg excretion during the entire season. C.W.G. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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Published

1971-05-01

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Section

Papers