Skip to main content
PMC home page
Canadian Journal of Veterinary Research logoLink to Canadian Journal of Veterinary Research
. 1987 Oct;51(4):465–469.

Gastrointestinal nematode parasites in Saskatchewan cattle: egg count distributions in beef animals.

L Polley 1, M G Bickis 1
PMCID: PMC1255366  PMID: 3453265

Abstract

Fecal samples were collected systematically in the spring from cows and yearlings entering, and in the fall from calves leaving, five community pastures in central Saskatchewan. Fecal samples were also collected systematically in the spring from cows entering, and in the fall from calves leaving, an experimental rotational grazing system. Samples were collected from 1398 animals and were examined by a quantitative fecal flotation technique with a sensitivity of ten eggs per gram. Distributions of nematode egg counts for 11 of the 12 cattle populations sampled were well described by a series of negative binomial distributions. A common value of k (a measure of aggregation) could be fitted to the counts from animals of all ages in four of the five community pastures, as well as to the counts from the cows from the fifth community pasture and from the rotational grazing system. A second value of k could be fitted to the counts from the calves from these two pasture. In addition, in three of the community pastures animals in the different age groups had the same mean count.

Full text

PDF

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Anderson R. M., May R. M. Helminth infections of humans: mathematical models, population dynamics, and control. Adv Parasitol. 1985;24:1–101. doi: 10.1016/s0065-308x(08)60561-8. [DOI] [PubMed] [Google Scholar]
  2. Barger I. A. The statistical distribution of trichostrongylid nematodes in grazing lambs. Int J Parasitol. 1985 Dec;15(6):645–649. doi: 10.1016/0020-7519(85)90010-4. [DOI] [PubMed] [Google Scholar]
  3. COX D. D., TODD A. C. Survey of gastrointestinal parasitism in Wisconsin dairy cattle. J Am Vet Med Assoc. 1962 Sep 15;141:706–709. [PubMed] [Google Scholar]
  4. Egwang T. G., Slocombe J. O. Efficiency and sensitivity of techniques for recovering nematode eggs from bovine feces. Can J Comp Med. 1981 Jul;45(3):243–248. [PMC free article] [PubMed] [Google Scholar]
  5. Fréchette J. L., Gibbs H. C. Studies on the incidence of gastrointestinal helminths of cattle in Quebec. Can Vet J. 1971 Nov;12(11):207–210. [PMC free article] [PubMed] [Google Scholar]
  6. Fréchette J. L., Lamothe P. Milk production effect of a morantel tartrate treatment at calving in dairy cows with subclinical parasitism. Can Vet J. 1981 Aug;22(8):252–254. [PMC free article] [PubMed] [Google Scholar]
  7. Gadbois P., Fréchette J. L., Villeneuve A., Groves B. I. A new approach in the prevention of gastrointestinal parasitic infections in cattle. Can Vet J. 1985 Apr;26(4):127–131. [PMC free article] [PubMed] [Google Scholar]
  8. Jacobson R. H., Worley D. E. Incidence and distribution of helminth parasites and coccidia in Montana cattle. Am J Vet Res. 1969 Jul;30(7):1113–1117. [PubMed] [Google Scholar]
  9. Malczewski A., Wescott R. B., Spratling B. M., Gorham J. R. Internal parasites of Washington cattle. Am J Vet Res. 1975 Nov;36(11):1671–1675. [PubMed] [Google Scholar]
  10. McGregor J. K., Kingscote A. A. A Survey Of Gastro-Intestinal Helminths Of Cattle In Ontario. Can J Comp Med Vet Sci. 1957 Nov;21(11):370–373. [PMC free article] [PubMed] [Google Scholar]
  11. Michel J. F. Observations on the faecal egg count of calves naturally infected with Ostertagia ostertagi. Parasitology. 1969 Nov;59(4):829–835. [PubMed] [Google Scholar]
  12. Michel J. F. Some observations on the worm burdens of calves infected daily with Ostertagia ostertagi. Parasitology. 1969 Aug;59(3):575–595. doi: 10.1017/s0031182000031127. [DOI] [PubMed] [Google Scholar]
  13. Michel J. F. The regulation of egg output by Ostertagia ostertagi in calves infected once only. Parasitology. 1969 Nov;59(4):767–774. [PubMed] [Google Scholar]
  14. Roberts J. L., Swan R. A. Quantitative studies of ovine haemonchosis. 3. The interpretation and diagnostic significance of the changes in serial egg counts of Haemonchus contortus in a sheep flock. Vet Parasitol. 1982 Feb;9(3-4):211–216. [PubMed] [Google Scholar]
  15. SZANTO J., MOHAN R. N., LEVINE N. D. PREVALENCE OF COCCIDIA AND GASTROINTESTINAL NEMATODES IN BEEF CATTLE IN ILLINOIS AND THEIR RELATION TO SHIPPING FEVER. J Am Vet Med Assoc. 1964 Apr 1;144:741–746. [PubMed] [Google Scholar]
  16. Slocombe J. O. Abomasal nematodes in cattle in Ontario. Can J Comp Med. 1974 Jan;38(1):18–21. [PMC free article] [PubMed] [Google Scholar]
  17. Slocombe J. O. Gastrointestinal parasites in cattle in Ontario. Can Vet J. 1973 Apr;14(4):91–95. [PMC free article] [PubMed] [Google Scholar]
  18. Slocombe J. O. Overwintering of bovine gastrointestinal nematodes in southwestern Ontario. Can J Comp Med. 1974 Jan;38(1):90–93. [PMC free article] [PubMed] [Google Scholar]
  19. Slocombe J. O. Parasitisms in domesticated animals in Ontario. I. Ontario Veterinary College Records 1965-70. Can Vet J. 1973 Feb;14(2):36–42. [PMC free article] [PubMed] [Google Scholar]
  20. Smith H. J. On the natural seeding of marshland pastures with bovine gastrointestinal parasites. Can J Comp Med. 1974 Apr;38(2):185–192. [PMC free article] [PubMed] [Google Scholar]
  21. Smith H. J., Stevenson R. G. A clinical outbreak of Trichuris discolor infection in stabled calves. Can Vet J. 1970 May;11(5):102–104. [PMC free article] [PubMed] [Google Scholar]
  22. Stockdale P. H., Harries W. N. Treatment of feedlot cattle in Alberta for gastrointestinal nematodes. Can Vet J. 1979 Sep;20(9):223–226. [PMC free article] [PubMed] [Google Scholar]
  23. Yazwinski T. A., Gibbs H. C. Survey of helminth infections in Maine dairy cattle. Am J Vet Res. 1975 Nov;36(11):1677–1682. [PubMed] [Google Scholar]
  24. ZIMMERMANN W. J., HUBBARD E. D. Gastrointestinal parasitism in Iowa cattle. J Am Vet Med Assoc. 1961 Sep 1;139:555–559. [PubMed] [Google Scholar]

Articles from Canadian Journal of Veterinary Research are provided here courtesy of Canadian Veterinary Medical Association

RESOURCES