Diurnal changes in the metabolic indices in the blood of racing Arabian horses
Gill, J.; Cedro, H.; Piróg, B.
Acta Physiologica Polonica 35(2): 159-163
1984
ISSN/ISBN: 0044-6033 PMID: 6543601 Document Number: 221874
In 8 stallions and 6 mares of pure Arabian breed the diurnal changes in the levels of lactic and pyruvic acid, glucose, and alkaline reserve were studied. All of them showed distinct diurnal changes but they failed to fulfill the criteria of circadian rhythm according to Halberg. It was found that all peaks occurred during the dark phase of the 24 h period except the glucose level in the stallions. Three of the indices studied showed higher mean diurnal levels in the mares than in the stallions. Only in the glucose level the mean values were reversed.