This would mean that the total number of yaks in their herd would be about 100. Thirty to forty milking yaks is about the maximum number an average nomad family can maintain without hiring additional labour. Tibetan sheep being milked near Mun Tso at about 5000 m in west central Tibet. Sheep lamb in February and March and, beginning in June, after the lambs are weaned, sheep are milked twice a day. Although yaks characterise Tibetan pastoralism, sheep are usually more important economically.
Sheep provide wool, meat, hides, and, in many areas, are also milked.
In western Tibet, an average nomad family may raise 300-400 sheep. A family with this many sheep would slaughter 30 sheep every year for their own meat consumption. The wool from Tibetan sheep is also one of the best carpet wools in the world.