Abstract

Abstract Extract Both the aetiology and practical importance of the post-parturient rise in strongyle egg counts of breeding ewes have been adequately reviewed and discussed (Dunsmore, 1965 Arundel, J. H. and Ford, G. E. 1969. The use of a single anthelmintic treatment to control the post-parturient rise in faecal worm egg count of sheep. Aust. vet. J., 45: 89–93. [Crossref], [PubMed] , [Google Scholar]; Connan, 1968a Brunsdon, R. V. 1964. The seasonal variations in the nematode egg counts of sheep: a comparison of the spring rise phenomenon in breeding and unmated ewes. N.Z. vet. J., 12: 75–80. [Taylor & Francis Online] , [Google Scholar], b Brunsdon, R. V. 1967. The spring-rise phenomenon: the relationship between the time of lambing and the commencement of the rise in faecal worm egg counts. N.Z. vet. J., 15: 35–40. [Taylor & Francis Online] , [Google Scholar]; Arundel and Ford, 1969 Brunsdon, R. V. 1970. The spring-rise phenomenon seasonal changes in the worm burdens of breeding ewes and in the availability of pasture infection. N.Z. vet. J., 18: 47–54. [Taylor & Francis Online] , [Google Scholar]).

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