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Effects of climate change on yak production at high altitude

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Title Effects of climate change on yak production at high altitude
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Creator G KRISHNAN
V PAUL
S S HANAH
J BAM
P J DAS
 
Subject Climate change, Heat stress, High altitude, Yak production
 
Description Not Available
Yak is considered the life-line of highland pastoral nomads who raise them on high altitude ranges under
transhumance. Yak production at high-altitude alpine ranges may be affected due to the gradual increase of
environmental temperature as a result of impending climate change. The mean environmental temperature of yak
habitat at 3,000 m above mean sea level in Northeastern Indian Himalaya, varying from 1.2 to 11.1°C and 7.9 to
19.7°C during winter and summer seasons, respectively, evidencing the heat stress to the yaks in summer with THI
more than 52. When environmental temperature exceeds 13°C, adaptive mechanisms of body accelerate respiration
rate and heart rate to cope with heat stress in yaks. It was reported that the climate change is already witnessed at
high altitude with average rise of environmental temperature 0.01 to 0.04°C/year and the expected increase of 2–
3°C have potentially catastrophic for high-altitude animals and ecosystem. The alpine pasture decreased in vegetative
above ground biomass and composition which results in starvation or loss of body condition appeared to be manifested
as reduced fertility in yak with low milk yield. Further, climate change may result in increase of pests and diseases
at the lower permanent settlements of sub-alpine region thereby making these areas incompatible for yaks. Mitigation
of heat stress in yak possibly can be done through three means by physical modification of the environment,
improved nutritional management and genetic development of strains that would be less sensitive to heat stress.
Not Available
 
Date 2017-08-03T10:53:19Z
2017-08-03T10:53:19Z
2016-06-01
 
Type Research Paper
 
Identifier G KRISHNAN, V PAUL, S S HANAH, J BAM and P J DAS
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/5054
 
Language English
 
Relation Not Available;
 
Publisher Not Available