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Diurnal variation and oscillatory patterns in physiological responses and HSP70 profile in heat stressed yaks at high altitude.

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Title Diurnal variation and oscillatory patterns in physiological responses and HSP70 profile in heat stressed yaks at high altitude.
Not Available
 
Creator Krishnan G,
Paul V,
Biswas TK,
Chouhan VS,
Das PJ,
Sejian V
 
Subject Yak,
heat stress,
HSP70,
rhythmic pattern,
rectal temperature,
respiration rate
 
Description Not Available
The present study was carried out at altitude of 3000 m above sea level (asl) to evaluate the impact of heat stress on yak adaptability. Sixteen healthy yaks of different age were randomly divided into two groups, calf (GI; n = 8) and adult (GII; n = 8). Experimental yaks were exposed to heat stress in the open paddock. THI ranged between 61.60 and 64.17 which were beyond the comfortable limit for yak. Post-exposure, rectal temperature increased (p < 0.01) by 2.97 °F and 2.42 °F in calf and adult yaks as compared to pre-exposure (100.08 ± 0.04 °F, 100.06 ± 0.05 °F). Respiration rate increased (p < 0.01) by 2.96 and 2.40 fold in calf and adult yaks with increased pulse rate on post-exposure to heat stress. The oscillatory patterns of physiological responses indicated that the level of heat stress increment was higher (p < 0.05) in calves than adult yaks. Plasma HSP70 increased (p < 0.01) by 7 fold in calf and 5 fold in adult yaks in comparison to pre-exposure level of 83.67 ± 1.11pg/ml and 80.65 ± 1.35 pg/ml. Thus, the yaks were experiencing heat stress at high altitude of 3000 m asl during the warmer months of the year and calves were more prone to heat stress as compared to adults.
Not Available
 
Date 2019-11-15T07:10:39Z
2019-11-15T07:10:39Z
2018-01-24
 
Type Research Paper
 
Identifier Krishnan G, Paul V, Biswas TK, Chouhan VS, Das PJ, Sejian V. 2018. Diurnal variation and oscillatory patterns in physiological responses and HSP70 profile in heat stressed yaks at high altitude. Biological Rhythm Research, 49:782-796
0929-1016
http://krishi.icar.gov.in/jspui/handle/123456789/24767
 
Language English
 
Relation Not Available;
 
Publisher Taylor and Francis