Prospective study of internal parasitism in sheep in an arid area : case of the area of Ain D’hab

Abstract :

A study of internal parasitism was conducted in naturally infected sheep of the Rembi breed in an arid region of Algeria (Ain D'hab). Coproscopy carried out from April to June 2007, revealed an overall rate of infection of 54%. The study revealed the presence of the following parasites, in order of importance: Nematodirus spp, Marshallagia marshalli, various digestive strongyles, among which Charbetia ovina, and Skrjabinema ovis, Trichuris ovis, Moniezia spp and Dictyocaulus filaria and coccidia (Eimeria spp). This study revealed the presence of two main parasites Nematodirus and Marshallagia in two categories of animals (lambs, ewes). An overall prevalence of 20.2% and 55.5% (ewes and lambs, respectively) was registered for Nematodirus whereas prevalences of 18.8% and 15% (ewes and lambs, respectively) were observed for Marshallagia. Feacal egg counts were low (300 OPG on average). Overall, parasitism linked to gastrointestinal strongyles was low because of the harsh climate of the region and the management of the herd.

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