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Scientific Article

The spring-rise phenomenon: The relationship between the time of lambing and the commencement of the rise in faecal worm-egg counts

Pages 35-40 | Received 03 Aug 1966, Published online: 23 Feb 2011

References

  • 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 .
  • Brunsdon , R. V. 1966a . Importance of the ewe as a source of Trichostrongyle infestation for lambs: Control of the spring-rise phenomenon by a single post-lambing anthelmintic treatment . N.Z. vet. J. , 14 : 118 – 125 .
  • Brunsdon , R. V. 1966b . A comparison of the spring-rise phenomenon in the faecal nematode-egg counts of housed sheep with that of sheep grazing infective pasture . N.Z. vet. J. , 14 : 145 – 151 .
  • Crofton , H. D. 1954 . Nematode parasite populationsin sheep on lowland farms I. Worm egg counts in ewes . Parasit. , 44 : 465 – 477 .
  • Crofton , H. D. 1958 . Nematode parasite populations in sheep on lowland farms. V. Further observations on the post-parturient rise and a discussion of its significance . Parasit. , 48 : 243 – 250 .
  • Crofton , H. D. 1963 . “ Nematode parasite population in sheep and on pasture ” . In Tech. Comm. No. 35, Commonwealth Bureau of Helminthology 104 – 104 . St. Albans
  • Field , A. C , Brambell , M. R. and Campbell , J. A. 1960 . Spring rise in faecal worm-egg counts of housed sheep and its importance in nutritional experiments . Parasit. , 50 : 387 – 399 .
  • Gibbs , H. C. 1964 . Observations on an outbreak of clinical parasitism in ewes during the winter months . Canad. vet. J. , 5 : 8 – 11 .
  • Paver , H. , Parnell , I. W. and Morgan , D. O. 1955 . Some factors influencing the seasonal variation in worm egg counts in Scottish hill sheep . J. comp. Path. , 65 : 220 – 235 .
  • Soulsby , E. J. L. 1962 . “ Immunity to helminths and its effect on helminth infections ” . In Animal Health and Production , Edited by: Grunsell , C. S. and Wright , A. I. 165 – 188 . London : Butterworths . In
  • Spedding , C. R. W. and Brown , T. H. 1956 . The “spring rise” in the nematode egg-count of sheep . J. Helminth. , 29 : 171 – 178 .

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