Why is oral rehydration therapy effective in many calves with uncomplicated diarrhoea?
Correct answer: B. Sodium and glucose cotransport remains active
- A. It permanently stops intestinal secretion
- B. Sodium and glucose cotransport remains active
- C. It destroys all intestinal bacteria
- D. It replaces plasma proteins directly
Explanation
The sodium-glucose cotransport mechanism in the small intestine often remains functional during diarrhoea, allowing water to follow absorbed sodium and glucose. Oral fluids therefore correct dehydration when the calf can swallow and has no severe ileus. They do not directly replace plasma proteins or eliminate all pathogens.
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