Effects of transport and racing on ionic changes in thoroughbred race horses.
1. Packed cell volume (PCV), blood glucose, total plasma proteins (TPP) and plasma electrolytes, osmolality, cortisol and aldosterone alterations produced by transport and racing, were investigated in race horses. 2. Plasma cortisol, sodium and blood glucose, found after transport, were higher, while aldosterone was lower than control levels. 3. After racing, PCV, blood glucose, TPP and plasma cortisol, sodium and osmolality were higher than control, while chloride diminished and aldosterone returned to control values. 4. These results demonstrate that transport and racing are different kinds of stressors, suggesting that the sympathetic system and hypophysis-suprarenal cortex axis have a dissimilar contribution to the physiological response.
White
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Department of Physiology and Biophysics, Faculty of Medicine, University of Chile, Santiago.
Reyes
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Godoy
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Martínez
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R
D000450:Aldosterone / Q000097:blood; D000818:Animals; D001786:Blood Glucose / Q000378:metabolism; D001798:Blood Proteins / Q000378:metabolism; D004573:Electrolytes / Q000097:blood; D005260:Female; D006400:Hematocrit; D006736:Horses / Q000097:blood*; D006854:Hydrocortisone / Q000097:blood; D008297:Male; D009490:Neurosecretory Systems / Q000502:physiology*; D009994:Osmolar Concentration; D010805:Physical Conditioning, Animal; D005082:Physical Exertion; D014186:Transportation
D001786:Blood Glucose; D001798:Blood Proteins; D004573:Electrolytes; D000450:Aldosterone; D006854:Hydrocortisone