Regional and circadian variations of sweating rate and body surface temperature in camels (Camelus dromedarius).
Anim Sci J
; 83(7): 556-61, 2012 Jul.
Article
in En
| MEDLINE
| ID: mdl-22776794
ABSTRACT
It was the aim of this study to investigate the regional variations in surface temperature and sweating rate and to visualize body thermal windows responsible for the dissipation of excess body heat in dromedary camels. This study was conducted on five dromedary camels with mean body weight of 450 ± 20.5 kg and 2 years of age. Sweating rate, skin and body surface temperature showed significant (P < 0.001) circadian variation together with the variation in ambient temperature. However, daily mean values of sweating rate, skin and body surface temperature measured on seven regions of the camel body did not significantly differ. The variation in body surface temperature compared to the variation in skin temperature was higher in the hump compared to the axillary and flank regions, indicating the significance of camel's fur in protecting the skin from daily variation in ambient temperature. Infrared thermography revealed that flank and axillary regions had lower thermal gradients at higher ambient temperature (T(a) ) and higher thermal gradients at lower T(a) , which might indicate the working of flank and axillary regions as thermal windows dissipating heat during the night. Sweating rate showed moderate correlation to skin and body surface temperatures, which might indicate their working as potential thermal drivers of sweating in camels.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Skin Physiological Phenomena
/
Skin Temperature
/
Sweating
/
Body Temperature
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Body Temperature Regulation
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Camelus
/
Circadian Rhythm
Limits:
Animals
Language:
En
Journal:
Anim Sci J
Journal subject:
MEDICINA VETERINARIA
Year:
2012
Document type:
Article