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The objective of this study was to perform the comparative evaluation of efficiency of traditional McMaster chamber and the newly designed chamber for the enumeration of nematode eggs in different agriculture animals. Thirteen pig, two horse and two sheep farms were randomly selected, and 815 of pig faecal samples, 264 of horse and 264 of sheep faecal samples were examined. The positive samples were identified by Henriksen and Aagaard (1976) [1] modification of McMaster method. Furthermore, experimental horse faeces were examined by [1] and Urquhart et al., 1996) [2] modifications, whereas pig and sheep faeces were examined by [1] and Kassai, 1999 [3] modifications, respectively. All samples were evaluated in two replicates: using traditional McMaster 0.3 ml chamber – I and newly designed 1.5 ml chamber – II [4]. In pig farms, 11.5% and 18.2% (chambers I and II, P<0.05) of pigs were found infected with Ascaris suum. Furthermore, 14.6% and 17.8% (chambers I and II, P<0.05) of pigs were found infected with Oesophagostomum dentatum and 3.7% and 8.2% (chambers I and II, P<0.05) with Trichuris suis, respectively. In horse farms, 65.5% and 83.7% horses infected with strongyles were identified (chambers I and II, P<0.05. In sheep farms, the number animals of positive to strongyle infection was 81.4% and 96.2% (I and II chambers, P<0.05). The new modification of chamber [4] demonstrated statistically higher sensitivity for enumeration of nematode eggs and for evaluation of farms with infected animals compared to McMaster modifications described in [1-3].

Comparative evaluation of efficiency of traditional McMaster chamber and newly designed chamber for the enumeration of nematode eggs