Accuracy of two methods for counting eggs of sheep nematode parasites.
A comparative study was carried out on eight species of sheep gastrointestinal nematodes in order to compare the value of two techniques for egg counting: the classical McMaster technique with saturated magnesium sulfate solution and a technique of egg extraction from faeces and counting by total collection after three centrifugations. Efficiency of extraction from 10 g of faeces was 95.9 to 99.5% according to the species of parasite, whereas the number of eggs counted by the McMaster technique represented only 16.5% of the total eggs present in the faeces. Advantages inherent in the use of these techniques are discussed.
Rossanigo
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INRA, Unité d'Ecologie des Parasites, Nouzilly, France.
Gruner
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L
D000704:Analysis of Variance; D000818:Animals; D002498:Centrifugation; D005243:Feces / Q000469:parasitology*; D009348:Nematoda / Q000254:growth & development*; D009349:Nematode Infections / Q000469:parasitology / Q000662:veterinary*; D010270:Parasite Egg Count / Q000379:methods / Q000592:standards / Q000662:veterinary*; D011237:Predictive Value of Tests; D015203:Reproducibility of Results; D012756:Sheep; D012757:Sheep Diseases / Q000469:parasitology*