Advertisement

Parasitology Research

, Volume 100, Issue 6, pp 1331–1340 | Cite as

Parasitological and clinical parameters of experimental Eimeria zuernii infection in calves and influence on weight gain and haemogram

  • B. BangouraEmail author
  • A. Daugschies
Original Paper

Abstract

Infection trials were performed to characterize experimental Eimeria zuernii coccidiosis parasitologically and clinically and to investigate the effects on weight gain and haemotologic parameters in affected calves. Three groups of calves were formed: Group 1 (n = 14) served as uninfected control group, group 2 (n = 11) was infected with 150,000 sporulated E. zuernii oocysts per calf, and group 3 (n = 16) was infected with 250,000 sporulated E. zuernii oocysts per calf. All infected animals shed oocysts and showed diarrhoea; a positive correlation could be shown between quantified oocyst excretion and faecal consistency. Measurements throughout the prepatent and the patent period revealed a marked influence of E. zuernii infection on weight gain, leukocyte concentration, haemoglobin, haematocrit, and mean cellular volume. Aberrations in these parameters were most pronounced in the highly infected group. The results of this study confirm that acute sublethal E. zuernii coccidiosis causes distinct loss of fluid and blood via intestine. This dominates also the haematological picture of the disease, which is mainly characterized by haemoconcentration. Leukocyte concentration was depressed during the early patent period, whereas it increased markedly from day 24 after infection on.

Keywords

Infected Group Coccidiosis Prepatent Period Infected Calf Patent Period 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

Thanks are given to the Bayer HealthCare AG, Division Animal Health, Monheim, Germany for providing the study animals, stable facilities, and technical equipment (Technicon H*1). The authors also thank in particular Mr. A. Richter for statistical support and Dr. H.-C. Mundt for coordinational support. The experiment was conducted in compliance with current European and German legal requirements.

References

  1. Adams R, Garry FB, Aldridge BM, Holland MD, Odde KG (1992) Haematologic values in newborn beef calves. Am J Vet Res 53:944–950PubMedGoogle Scholar
  2. Daugschies A, Najdrowski M (2005) Eimeriosis in cattle: current understanding. J Vet Med Ser B 52(10):417–427CrossRefGoogle Scholar
  3. Daugschies A, Buerger HJ, Akimaru M (1997) Effects of experimental infection with Eimeria bovis on the balance of sodium, potassium and water in calves. Parasitol Int 46:159–169CrossRefGoogle Scholar
  4. Ernst JV, Benz GW (1986) Intestinal coccidiosis in cattle. Vet Clin North Am Food Anim Pract 2:283–291PubMedGoogle Scholar
  5. Fitzgerald PR (1980) The economic impact of coccidiosis in domestic animals. Adv Vet Sci Comp Med 24:121–143PubMedGoogle Scholar
  6. Fitzgerald PR, Mansfield ME (1972) Effects of bovine coccidiosis on certain blood components, feed consumption and body weight changes of calves. Am J Vet Res 33:1391–1397PubMedGoogle Scholar
  7. Knowles TG, Edwards JE, Bazeley KJ, Brown SN, Butterworth A, Warriss PD (2000) Changes in the blood biochemical and haematological profile of neonatal calves with age. Vet Rec 147:593–598PubMedGoogle Scholar
  8. Kraft W, Dürr UM, Fürll M, Bostedt H, Heinritzi K (1999) Hämatologie. In: Kraft W, Dürr M (eds) Klinische Labordiagnostik in der Tiermedizin, 5th edn. Schattauer Verlag Stuttgart, New York, pp 43–77Google Scholar
  9. Marshall RN, Catchpole J, Green JA, Webster KA (1998) Bovine coccidiosis in calves following turnout. Vet Rec 143:366–367PubMedGoogle Scholar
  10. Martin SW, Lumsden JH (1987) The relationship of hematology and serum chemistry parameters to treatment for respiratory disease and weight gain in Ontario feedlot calves. Can J Vet Res 51:499–505PubMedGoogle Scholar
  11. Mundt HC, Daugschies A, Uebe F, Rinke M (2003) Efficacy of toltrazuril against artificial infections with Eimeria bovis in calves. Parasitol Res 90(Suppl 3):S166–S167PubMedCrossRefGoogle Scholar
  12. Mundt HC, Bangoura B, Rinke M, Rosenbruch M, Daugschies A (2005) Pathology and treatment of Eimeria zuernii coccidiosis in calves: investigations in an infection model. Parasitol Int 54(4):223–230PubMedCrossRefGoogle Scholar
  13. Sachs L (1992) Angewandte Statistik, 7th edn. Springer, Berlin Heidelberg New YorkGoogle Scholar
  14. Steinhardt M, Gollnast I, Langanke M, Bunger U, Kutschke J (1993) Clinicochemical blood values in newborn calves. 2. Repeated studies in the same animals. Tierärztl Prax 21:405–411PubMedGoogle Scholar
  15. Stockdale PHG (1977) The pathogenesis of the lesions produced by Eimeria zuernii in calves. Can J Comp Med 41(3):338–344PubMedGoogle Scholar
  16. Stockdale PHG, Niilo L (1976) Production of bovine coccidiosis with Eimeria zuernii. Can Vet J 17:35–37PubMedGoogle Scholar
  17. Stockdale PHG, Bainborough AR, Bailey CB, Niilo L (1981) Some pathophysiologial changes associated with infection of Eimeria zuernii in calves. Can J Comp Med 45:34–37PubMedGoogle Scholar
  18. Thienpont D, Rochette F, Vanparijs OFJ (1990) Diagnose von Helminthosen durch koproskopische Untersuchung. Janssen Pharmaceutica, BeerseGoogle Scholar
  19. Willuhn J (1999) Untersuchungen der Blutzusammensetzung und Charakterisierung peripherer Blutlymphozyten im Verlauf experimenteller Eimeria bovis-Infektionen des Kalbes. Fachverlag Köhler Giessen, p 98Google Scholar

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  1. 1.Faculty of Veterinary Medicine, Institute of ParasitologyUniversity of LeipzigLeipzigGermany

Personalised recommendations