Regarding food consumption efficiency compared to cows, how much do managed yaks generally eat?

Answer

Only about one-third of the food that cows require to maintain their weight

Due to their specialized rumen allowing efficient processing of low-quality forage, yaks under managed conditions consume only about one-third of the food that cows need for weight maintenance.

Regarding food consumption efficiency compared to cows, how much do managed yaks generally eat?
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