What is the most appropriate therapy for rehydration of a cow with right abomasal volvulus?

In cases of right abomasal volvulus, rehydration therapy is critical for the stability of the affected cow. The primary goal is to restore proper hydration and electrolyte balance while addressing any acidosis that may have occurred due to the condition.

The option that consists of 0.9% sodium chloride with added KCl is especially appropriate because it provides essential sodium and chloride, which are vital for restoring osmotic balance and supporting cellular function. Adding potassium chloride is crucial as well, considering that cows may present with hypokalemia due to the significant metabolic changes associated with abomasal volvulus. Proper potassium levels are necessary for muscle function and overall metabolic health.

While bicarbonate (NaHCO3) can be important in cases of metabolic acidosis, the need for potassium and the ability of the saline solution to effectively provide hydration and restore electrolyte balance makes this choice suitable for treating right abomasal volvulus. Additionally, the other options may not fulfill the specific requirements for hydration and electrolyte supplementation in this context as effectively as the chosen answer does.