Biomaterial Database

Cutaneous water loss and respiration rates of various breeds of sheep at high ambient temperatures. 1979

A K Rai, and M Singh, and T More

The sweating and respiratory rates in rams of Rambouillet (R), Chokla (C), Malpura (M), R x C and R x M breed/breed crosses were recorded when housed in sheds or exposed to 20, 25, 30, 35 and 42 degrees C ambient temperatures in a climatic chamber. The sweating (cutaneous moisture) was higher (P less than 0.05) in Rambouillet and its crosses than the natives, the Malpura sheep producing the least sweat at all temperatures. There was no breed difference in the response of increase in sweating up to 35 degrees C but at 42 degrees C the Chokla showed a considerable increase. Sweating was more pronounced on the shoulder than on the mid-side region. Sweating and respiratory rates increased (P less than 0.05) with the increase in ambient temperature. The Rambouillet exhibited the highest increase in respiration rate at 25 degrees C and the trend continued up to 42 degrees C. The relationship between fleece characteristics, evaporative heat loss tolerance of sheep is dicussed.

UI	MeSH Term	Description	Entries
D012119	Respiration	The act of breathing with the LUNGS, consisting of INHALATION, or the taking into the lungs of the ambient air, and of EXHALATION, or the expelling of the modified air which contains more CARBON DIOXIDE than the air taken in (Blakiston's Gould Medical Dictionary, 4th ed.). This does not include tissue respiration (	Breathing
D004781	Environmental Exposure	The exposure to potentially harmful chemical, physical, or biological agents in the environment or to environmental factors that may include ionizing radiation, pathogenic organisms, or toxic chemicals.	Exposure, Environmental,Environmental Exposures,Exposures, Environmental
D006358	Hot Temperature	Presence of warmth or heat or a temperature notably higher than an accustomed norm.	Heat,Hot Temperatures,Temperature, Hot,Temperatures, Hot
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D012756	Sheep	Any of the ruminant mammals with curved horns in the genus Ovis, family Bovidae. They possess lachrymal grooves and interdigital glands, which are absent in GOATS.	Ovis,Sheep, Dall,Dall Sheep,Ovis dalli
D013546	Sweating	The process of exocrine secretion of the SWEAT GLANDS, including the aqueous sweat from the ECCRINE GLANDS and the complex viscous fluids of the APOCRINE GLANDS.