초록

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Abstract ▼ AI-Helper

To determine the efficacy of immunotherapeutic agents, four female Holstein calves 7-day-old were inoculated per os with $1{\times}10^7$ C parvum oocysts (VRI-CN91). Each calf received twice daily oral dosage of 200-500ml of the immune bovine serum, immune bovine colostrum, mAb C6, and ph...

To determine the efficacy of immunotherapeutic agents, four female Holstein calves 7-day-old were inoculated per os with $1{\times}10^7$ C parvum oocysts (VRI-CN91). Each calf received twice daily oral dosage of 200-500ml of the immune bovine serum, immune bovine colostrum, mAb C6, and phosphate-buffered saline, respectively. Treatment was initiated 4 days postinfection and laster 3 days. The clinical sign of the calf treated with phosphate-buffered saline lasted 9 days after the initial treatment. The calves treated with those immunotherapeutic agents, however, showed decreased severity of diarrhea at day 3, 2, 5 after the initial administration, respectively. The calves treated with immunotherapeutic agents showed reduced parasite loads compared to control calf. These results suggest that oral passive immunotherapy with immune bovine colostrum and immune bovine serum may be a useful treatment approach.

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