This study was conducted around Sagarmatha National Park Area in late winter season. The Yak and their crossbred herds were objectively visualized and studied entering Lukla ·and making actual visits on the way to Namche- Syangboche- Khumjungfor complete understanding of their breeding, and management practices through individual contact method Secondary data relevant .to the study, related documents and maps were also used as accessory resource materials for this study. From the study it was found the Yak/ Nak herding is one of the most importantly recognized/arming in the high terrain of sub Himalayan region of Nepal. Although this farming is being handled by traditional and uneducated Sherpa community since long time ago, yet some scientific reasoning are found being blended in their practices. There are a number of mating options, out of which farmers are adopting to the one which are the best suitable them. The various type of farming which are identified as being existed independently in Sagarmatha National Park Area are : ( i) Yak I Nak producer cum raiser, ( ii) Dimjo Chaunri I Zhop/cy() producer (breeder), (iii) Dimjo Chauri raiser, (iv) Dimjo Zhop/cyo raiser, (v) Urang Chaunri I Zhop/cyo producer (breeder), (vi) Urang Chmiri raiser and (vii) Urang Zhop/cyo raiser. They differ independently to one another in terms of their objectives, management practices and ownership. Although Dimijo crossbred seems to be superior in productive and reproductive performance to Urang but for the people of lower belt, Urang is recommended than Dimjo because of its advantage on adaptation inwide range of   climatic conditions over Dimijo. Selected Yak bull preferably with white color can   be imported from Tibet and should be used for mating purposes for genetic improvement of new generations.

This study was conducted around Sagarmatha National Park Area in late winter season. The Yak and their crossbred herds were objectively visualized and studied entering Lukla ·and making actual visits on the way to Namche- Syangboche- Khumjungfor complete understanding of their breeding, and management practices through individual contact method Secondary data relevant .to the study, related documents and maps were also used as accessory resource materials for this study. From the study it was found the Yak/ Nak herding is one of the most importantly recognized/arming in the high terrain of sub Himalayan region of Nepal. Although this farming is being handled by traditional and uneducated Sherpa community since long time ago, yet some scientific reasoning are found being blended in their practices. There are a number of mating options, out of which farmers are adopting to the one which are the best suitable them. The various type of farming which are identified as being existed independently in Sagarmatha National Park Area are : ( i) Yak I Nak producer cum raiser, ( ii) Dimjo Chaunri I Zhop/cy() producer (breeder), (iii) Dimjo Chauri raiser, (iv) Dimjo Zhop/cyo raiser, (v) Urang Chaunri I Zhop/cyo producer (breeder), (vi) Urang Chmiri raiser and (vii) Urang Zhop/cyo raiser. They differ independently to one another in terms of their objectives, management practices and ownership. Although Dimijo crossbred seems to be superior in productive and reproductive performance to Urang but for the people of lower belt, Urang is recommended than Dimjo because of its advantage on adaptation inwide range of   climatic conditions over Dimijo. Selected Yak bull preferably with white color can   be imported from Tibet and should be used for mating purposes for genetic improvement of new generations.