title: Accuracy of two methods for counting eggs of sheep nematode parasites.
abstract: 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.
authors.affiliation: INRA, Unité d'Ecologie des Parasites, Nouzilly, France.
authors.forename: C E
authors.initials: CE
authors.lastname: Rossanigo
authors.forename: L
authors.initials: L
authors.lastname: Gruner
mesh_terms: 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*