Experimental <i>Cryptosporidium parvum</i> infection in a Korean native calf isolated from a Korean mouse

, Wee, S H; , Lee, C G; , Joo, H D; , Kang, Y B

doi:1992.30.4.259

Korean J Parasito > Volume 30(4):1992 > Article

Original Article


Korean J Parasitol. 1992 Dec;30(4):259-262. English. Published online Mar 20, 1994. http://dx.doi.org/10.3347/kjp.1992.30.4.259
Copyright © 1992 by The Korean Society for Parasitology


Experimental Cryptosporidium parvum infection in a Korean native calf isolated from a Korean mouse
S H Wee,C G Lee,^*H D Joo and Y B Kang
Veterinary Research Institute, RDA, Anyang 430-016, Korea.


Abstract
This study was performed to investigate experimental transmission of Cryptosporidium parvum in a calf. A 25-day-old Korean native calf was inoculated per os with 1 × 10⁶C. parvum oocysts isolated from a Korean mouse. The calf commenced oocyst discharge in feces on post-inoculation day 4, and continued until the day 11. The number of discharged oocysts peaked (4.9 × 10⁵) on post-inoculation day 6. However, the calf did not show signs of diarrhea. The present results indicate that C. parvum is cross-transmissible between the calf and the mouse.

Figures


	Fig. 1 Patterns of oocyst discharge in a Korean native calf experimentally infected with 10⁶C. parvum oocysts originated from a mouse.


	Fig. 2 Oocysts recovered from feccs of a Korean native calf by the Shcather's sugar centrifugal floatation method (×400).


	Figs. 3-4 Fig. 3. Oocyst recovered from feces of a Korean native calf by the DMSO-modified acid fast staining technique (×1,000). Fig. 4. Immunofluorescence staining of oocysts from fecal samples of a Korean native calf using nomoclonal antibody (×250).

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