Owing to their cleanness (yaks live at high elevations in environmentally clean conditions), their high caloric content (the fat content of yak milk is as high as 7 per cent; meat — 2,600 kilocalories; fat — 7,160 kilocalories) and their uniqueness (the down of young yaks is similar to eiderdown; yak wool is an excellent material for making wigs; yak blood is a unique starting material for the preparation of sera; yak leather is exceptionally durable and lasting), the products derived from yak-breeding should become profitable export items.
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