Studies on the pathogenicity ofCooperia curticeifor sheep

Abstract
Extract Cooperia curticei is commonly found in sheep in New Zealand, frequently in relatively large numbers. The pathogenicity of this nematode, for sheep has been the subject of few experimental studies; the evidence available suggests that C. curticei produces few pathological changes in sheep (Andrews, 1938 Andrews, J. S. 1938. Observations on the cellular elements and haemoglobin in the blood of sheep infected with the nematode Cooperia curticei. N. Am Vet., 19: 40–44. [Google Scholar] ), although it has been claimed to be highly pathogenic for goats (Edgar, 1936 Edgar, G. 1936. Fatal effect of heavy infestation with Cooperia curticei (Railliet 1893) in goats. Aust. vet. J., 12: 58–61. [Google Scholar] ). In view of the little information available, some further investigation seemed justified. This paper describes briefly two experiments on the effect of C. curticei on sheep.

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