Record Details

The influence of faecal egg counts and fungal dose levels on the nematode-trapping capability of Duddingtonia flagrans against free-living stages of gastrointestinal nematodes of cattle

Indian Agricultural Research Journals

View Archive Info
 
 
Field Value
 
Title The influence of faecal egg counts and fungal dose levels on the nematode-trapping capability of Duddingtonia flagrans against free-living stages of gastrointestinal nematodes of cattle
 
Creator WARUIRU, R M
 
Subject Biological control, Cattle, Gastrointestinal namatodes, Duddingtonia flagrans, Nematode-destroying fungi
 
Description In an in-vitro experiment, the interactions between free-living stages of bovine gastrointestinal nematodes and nematophagous fungus Duddingtonia flagrans were evaluated using a faecal culture assay. Faeces were collected from donor calves infected with monocultures of Haemonchus placei, Trichostrongylus axei, Cooperia oncophora and Oesophagostomum radiatum, and the number of parasitic eggs' per gram of faeces (epg) were determined. The assay consisted of 4 faecal worm egg levels: low (40-50 epg), medium (200-280 epg), high (600-680 epg) and very high (1 288-4 800) and 4 fungal concentrations: 0 (controls),1 000, 5 000 and 25 000 chlamydospores/g of faeces. The number of infective third stage larvae which developed in faecal cultures was determined after incubating cultures for 2 weeks in a climatic chamber at 25°C and 95% relative humidity. The nematode-trapping capability of D.flagrans was found dependent on the fungal concentration and number of eggs in the faecal cultures. Thus, per cent reductions increased with corresponding increase in fungal concentration and epg levels in all the 4 species of parasitic nematodes. The average trapping efficacy of D. flagrans at the medium epg level exceeded 75% for H. placei, T. axei and C. oncophora compared to 53% for O. radiatum at the 1 000 and 5 000 fungal spore concentrations.
 
Publisher Directorate of Knowledge Management in Agriculture
 
Contributor —
 
Date 2014-01-06
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
—
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAnS/article/view/36333
 
Source The Indian Journal of Animal Sciences; Vol 71, No 1 (2001)
0367-8318
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAnS/article/view/36333/16161
 
Rights Copyright (c) 2014 The Indian Journal of Animal Sciences