Effect of heat stress on milk production, rectal temperature, respiratory rate and blood chemistry in Holstein, Jersey and Australian milking Zebu cows

The effect of heat stress on changes in milk production, rectal temperature, respiratory rate and blood chemistry was evaluated in three groups of six mature Holstein, Jersey and Australian Milking Zebu (AMZ) dairy cows. These animals were subjected to a cool environment when the mean temperature-hu...

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Veröffentlicht in:	Tropical animal health and production 2004-01, Vol.36 (7), p.685-692
Hauptverfasser:	Srikandakumar, A, Johnson, E.H
Format:	Artikel
Sprache:	eng
Schlagworte:	Acid-Base Equilibrium - physiology Animals Blood Blood Chemical Analysis - veterinary blood chemistry Blood Urea Nitrogen body temperature Body Temperature Regulation - physiology Breeding Calcium Cattle Cattle Diseases - blood Cattle Diseases - physiopathology Chemistry Dairy cattle dairy cows Female heat stress Heat Stress Disorders - blood Heat Stress Disorders - physiopathology Heat Stress Disorders - veterinary Heat tolerance Holstein Hot Temperature - adverse effects Humidity Hydrogen-Ion Concentration Jersey Lactation - physiology Milk - secretion Milk production Nitrogen Physiology Reference Values Relative humidity Respiration Seasons Urea
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