Abstract
Extract The regular ,occurrence of a seasonal increase in the nematode egg output of breeding ewes has been well recognized for many years(for reviews see Crofton, 1963 Crofton, H. D. 1963. Nematode parasite population in sheep and on pasture, Tech. Comm. No. 35 104–104. St. Albans: Commonwealth Bureau of Helminthology. [Google Scholar] ; Dunsmore, 1965 Dunsmore, J. D. 1965. Ostertagia spp. in lambs and pregnant ewes. J. Helminth., 39: 159–184. [Google Scholar] ; Connan 1968a Connan, R. M. 1968a. The post-parturient rise in faecal nematode egg count of ewes: its aetiology and epidemiological significance. World. Rev. anim. Prod., 4: 53–57. [Google Scholar] ).

This publication has 16 references indexed in Scilit: