Thermoregulatory response to outdoor heat stress of hair sheep females at different physiological state

Forty Dorper × Pelibuey sheep females were used to evaluate the effects of physiological state on physiological variables and serum concentrations of metabolites, thyroid hormones, and electrolytes under outdoor heat stress conditions. Females were selected as follows ( n  = 10 per group): weaning e...

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Bibliographic Details
Published in:International journal of biometeorology 2018-12, Vol.62 (12), p.2151-2160
Main Authors: Macías-Cruz, U., Correa-Calderón, A., Mellado, M., Meza-Herrera, C. A., Aréchiga, C. F., Avendaño-Reyes, Leonel
Format: Article
Language:English
Subjects:
Aging - physiology
Animal Physiology
Animals
Biological and Medical Physics
Biophysics
Blood
Blood Glucose - analysis
Body Temperature
Body Temperature Regulation - physiology
Cholesterol
Cholesterol - blood
Coating effects
Earth and Environmental Science
Environment
Environmental Health
Female
Females
Glucose
Hair
Heat stress
Heat Stress Disorders - blood
Heat Stress Disorders - physiopathology
Heat Stress Disorders - veterinary
Heat tolerance
Hormones
Lactation
Metabolites
Meteorology
Nitrogen
Original Paper
Parity
Parturition
Physiological effects
Physiology
Plant Physiology
Pregnancy
Respiration
Respiratory Rate
Serum levels
Sheep
Sheep - physiology
Sheep Diseases - blood
Sheep Diseases - physiopathology
Thyroid
Thyroid gland
Thyroid hormones
Triiodothyronine
Urea
Weaning
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Summary:Forty Dorper × Pelibuey sheep females were used to evaluate the effects of physiological state on physiological variables and serum concentrations of metabolites, thyroid hormones, and electrolytes under outdoor heat stress conditions. Females were selected as follows ( n  = 10 per group): weaning ewe lambs (WEL; 3 months old), replacement nulliparous ewes (RNE; 8 months old), non-pregnant and non-lactating multiparous ewes (NME; 3–4 years old) and lactating multiparous ewes (LME; 3–4 years old). While physiological variables were measured both morning and afternoon, blood samples were collected before feeding in the morning to determine all blood components. Three contrasts were constructed: (1) WEL vs. older ewes, (2) RNE vs. multiparous ewes, and (3) NME vs. LME. Compared with older ewes, WEL had higher ( P  
ISSN:0020-7128
1432-1254
DOI:10.1007/s00484-018-1615-2