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As a primitive breed unique to the Qinghai-Tibet Plateau,the yak is an important means of production and source of livelihood for the people living in the plateau area.In our country,there are about 14 million yaks,92 percent of the total world population,distributed mainly over alpine grassland of about 157 million hectares on the Qinghai-Tibet Plateau.Since the end of the 1950s,with Professor Cai Li as a representative,a group of scientists from the Southwest
As a primitive breed unique to the Qinghai-Tibet Plateau, the yak is an important means of production and source of livelihood for the people living in the plateau area. In our country, there are about 14 million yaks, 92 percent of the total world population, distributed mainly over alpine grassland of about 157 million hectares on the Qinghai-Tibet Plateau. Since the end of the 1950s, with Professor Cai Li as a representative, a group of scientists from the Southwest