Milk and Dung Production by Yaks (Poephagus grunniens): Important Products for the Livelihood of the Herders and for Carbon Recycling on the Qinghai-Tibetan Plateau
The Qinghai-Plateau, characterized by an extremely harsh environment, namely, severe cold, low air oxygen content and strong ultraviolet radiation, accounts for one-third of the total grasslands in China. Yaks (Poephagus grunniens) have adapted well, both physiologically and anatomically, to the high altitude and extreme cold. They are vital for the livelihoods of the herders, providing milk and meat for consumption, dung for fuel, fertilizer and building material and fiber for clothing, tent material and rope. It is estimated that, on an annual basis, each lactating female yak produces an average of 288 kg milk, 19 kg butter, 17 kg hard dried curds (qula) and 84 kg yoghurt and each yak produces an average of 786 kg of dung organic dry matter. This paper discusses the importance of milk and dung production by yaks for the livelihood of the herders and the role of these products in carbon recycling.
KeywordsYaks Milk production Dung production Carbon recycling Qinghai-Tibetan Plateau Extreme climate Sedentarization
- Bauer, K., and Y. Nyima. 2011. Laws and regulations impacting the enclosure movement on the Tibetan Plateau of China. Himalaya 30 (1): 23–37.Google Scholar
- Beall, C.M., and M.C. Goldstein. 1993. Dietary seasonality among Tibetan nomads. Research and Exploration 9: 477–479.Google Scholar
- Cai, L. 1996. The yak. Bangkok: FAO.Google Scholar
- Cencetti, E. 2011. Tibetan plateau grassland protection: Tibetan herders’ ecological conception versus state policies. Himalaya 30 (1): 39–50.Google Scholar
- Chen, P.F., C.L. Li, S.C. Kang, et al. 2011. Indoor air pollution in the Nam Co and Ando regions in the Tibetan Plateau. Huan Jing Kexue 32: 1231–1236.Google Scholar
- Devkota, R.C. 2002. Yak farming in Solukhumbo. Lailitpur, Nepal: Ministry of Agriculture, Department of Livestock Service.Google Scholar
- Fischer, A.M. 2011. The great transformation of Tibet? Rapid labor transitions in times of rapid growth in the Tibet Autonomous Region. Himalaya 30 (1): 63–77.Google Scholar
- Gao, T., B. Xu, X.C. Yang, et al. 2012. Review of research on biomass carbon stock in grassland ecosystem of Qinghai-Tibetan plateau. Progress in Geography 31 (2): 1724–1731.Google Scholar
- Goldstein, M.C.,C. M. Beall 1987. Anthropological fieldwork in Tibet studying nomadic pastoralists on the Changtang. Himalaya 7 (1): Article 4.Google Scholar
- Goldstein, M.C., C.M. Beall, and R.P. Cincotta. 1990. Traditional nomadic pastoralism and ecological conservation on Tibet’s northern plateau. National Geographic Research 6: 139–156.Google Scholar
- Holthaus, E. 2015. Yak Dung is making climate change worse and there’s no easy solution. Future tense: What’s to come. http://www.slate.com/articles/technology/future_tense/2014/12/yak_dung_is_making_climate_change_worse_and_new_cookstoves_don_t_help.html.
- IPCC. 2007. Climate change 2007. The fourth assessment report. The physical science basis. Intergovernmental Panel on Climate Change. Cambridge, UK: Cambridge University Press.Google Scholar
- Iselin, L. 2011. Modern education and changing identity constructions in Amdo. Himalaya 30 (1): 91–100.Google Scholar
- IUCN. 2002. International union for the conservation of nature and natural resources. Gland: The World Conservation Unit.Google Scholar
- Joshi, D.D. 2003. Yak in Nepal. In The yak, ed. G. Wiener, J. Han, and R. Long, 2nd ed., 316–322. Bangkok: FAO.Google Scholar
- Kharel, M., S.P. Neopane, R. Shrestha 2005. Performance characteristics of the yak in Nepal and its crosses with mountain cattle. http://agtr.ilri.cigar.org/Casestudy/yak. Yak.htm. Accessed March 26, 2017.
- Lal, R. undated. Soil carbon sequestration: SOLAW background thematic report—TR04B. Rome: FAO. http://www.fao.org/fileadmin/templates/solaw/files/thematic_reports/TR_04b_web.pdf. Accessed June 1, 2017.
- Li, J., and X.A. Yang. 2005. Gender role of females and their social level change of Tibetan population in Gannan. Lanzhou Xuekan 6: 110–113.Google Scholar
- Lu, H., K. Deng, X. Zi, et al. 2004. ‘Yaks’ website and its effects. In Yak Production in Central Highlands, Fourth International Congress on Yak. Chengdu, China.Google Scholar
- Luo, N., J. Gu, Aireti, et al. 1997. Yaks in Xinjiang. In Conservation and Management of Yak Genetic Diversity, Proceedings of a workshop in Kathmandu, Nepal, 1966, ed. D.J. Miller, S.R. Craig and G. M. Rana, 115–122. ICOMOD.Google Scholar
- Miller, D. 2003. Tibet: Environmental analysis. Background paper in preparation for USAID’s program.Google Scholar
- Nyima, T. 2011. Development discourses on the Tibetan Plateau: Urbanization and expropriation of farmland in Dartsedo. Himalaya 30 (1): 79–90.Google Scholar
- Ramanathan, V., and Y. Xu. 2010. The Copenhagen Accord for limiting global warming: Criteria, constraints and available avenues. www.pnas.org/cgi/doi/10.1073/pnas.1002293107. Accessed June 1, 2017.
- Sadler, K., E. Mitchard, Y.A. Abdi, et al. 2012. Milk matters: The impact of dry season livestock support on milk supply and child nutrition in Somali Region, Ethiopia. Addis Ababa: Feinstein International Center, Tufts University and Save the Children.Google Scholar
- Sherchand, L., and N.P.S. Karki. 1997. Conservation and management of domestic yak diversity in Nepal. In Conservation and management of yak genetic diversity, Proceedings of a Workshop in Kathmandu, Nepal, 1996, ed. D.J. Miller, S.R. Craig and G.M. Rana, 47–56. ICOMOD.Google Scholar
- Sulek, E. 2011. Disappearing sheep: The unexpected consequences of the emergence of the caterpillar fungus economy in Golok, Qinghai, China. Himalaya 30 (1): 9–22.Google Scholar
- Tashi, N., and T. Partap. 2000. Livestock based livelihoods in Tibet, China, and sustainability concerns. In Contribution of livestock to mountain livelihoods, ed. P.M. Tulachan, M.A.M. Saleem, J. Maki-Hokkonen, and T. Partap, 171–182. Nepal: ICOMOD.Google Scholar
- Tufarelli, V., E. Cazzato, A. Ficco, et al. 2010. Evaluation of chemical composition and in vitro digestibility of Appennine pasture plants using yak (Bos grunniens) rumen fluid or faecal extract as inoculum source. Asian-Australian Journal of Animal Science 23 (12): 1587–1593.CrossRefGoogle Scholar
- Tulachan, P.M. 2000. Livestock production and management strategies in the mixed farming areas of the Hindu-Kush Himalayas. In Contribution of livestock to mountain livelihoods, ed. P.M. Tulachan, M.A.M. Saleem, J. Maki-Hokkonen, and T. Partap, 123–134. Patan, Nepal: ICOMOD.Google Scholar
- Vinding, M. 1999. The thakali: A Himalayan ethnography. Chicago, IL: Serindia Publications, Inc.Google Scholar
- Wang, Y.X., S.Y. Pan, T. Lu, et al. 2014. Impact of livelihood capital on the livelihood activates of herdsmen on the eastern edge of the Qinghai-Tibet plateau. Resources Science 36 (10): 2157–2165.Google Scholar
- Watts, A. 2015. Breaking science news: yak dung burning pollutes indoor air of Tibetan households. WUWT (What’s up with that). http://wattsupwiththat.com/2015/01/16/breaking-science-news-yak-dung-burning-pollutes-indoor-air-of-tibetan-households/.
- Wiener, G., J. Han, and R.J. Long, eds. 2003. The Yak. 2nd ed. Bangkok: FAO.Google Scholar
- WMO. 2010. Greenhouse Gas Bulletin: The state of the greenhouse gases in the atmosphere until December 2009. Geneva: World Meteorological Organization.Google Scholar
- Yu, X.J. 2010. The role and mechanism of yak dung on maintenance for Qinghai-Tibet Plateau alpine grassland health. PhD thesis, Gansu Agricultural University, Gansu, China.Google Scholar
- Zhang, R.C. 2000. Effects of environment and management on yak reproduction. In Recent advances in yak reproduction, ed. X.X. Zhao and R.C. Zhang. Ithaca, New York: International Veterinary Information Service.Google Scholar
- Zhao, X.X. 2000a. Introduction: The yak as a subject of scientific writing. In Recent advances in yak reproduction, ed. X.X. Zhao and R.C. Zhang. Ithaca, New York: International Veterinary Information Service.Google Scholar
- ———. 2000b. An overview of the reproductive performance. In Recent advances in yak reproduction, ed. X.X. Zhao and R.C. Zhang. Ithaca, New York: International Veterinary Information Service.Google Scholar
- Zheng, R.L., and Z.Y. Huang. 2008. Free radical biology. 3rd ed. Lanzhou, China: Higher Education Press.Google Scholar