Experimental observations on parasitic liver white spot in New Zealand sheep

Abstract

Extract

The majority of parasitic liver lesions seen in New Zealand sheep can be ascribed to Taenia hydatigena and Echinococcus granulosus, both of which have a widespread distribution, and to Fasciola hepatica. where it occurs locally (Whitten, 1945; Bull, 1953; Armstrong, 1954; Gemmell, 1961a; 1961b; 1961c). In view of the value placed on the incidence of such lesions in sheep as an indicator of the progress in the campaign to eradicate E. granulosus and T. hydatigena, it was considered important to assess the significance of other parasites in the aetiology of focal fibrotic liver lesions known colloquially as “white spot”.