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  1. Resistance of Sabi and Dorper ewes to gastro-intestinal nematode infections in an African semi-arid environment por Matika, O., Nyoni, S., Wyk, J.B. van, Erasmus, G.J., Baker, R.L.

    Publicado 2003
    “…At all sampling times except at weaning individual ewes were treated with an anthelmintic when their FEC was greater than 1500eggs/g (epg) and/or their PCV was less than 20%. The proportion of Dorper ewes that was treated with anthelmintic was significantly higher than that of Sabi ewes at all sampling dates. …”
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    Journal Article

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