A study of diurnal changes in cortisol and glucose levels and FDPA activity in foals during the first 13 weeks of life and in their lactating mothers.
1. In six standard-bred mares and their foals diurnal changes in the cortisol and glucose levels and in FDPA activity were studies for 13 weeks of foal life. 2. In the cortisol level diurnal rhythm was found in the 3rd, 7th and 11th week of foal life and in the 11th week of lactation in mares. 3. In mares the mean diurnal cortisol level changed from 32 ng/ml in the first week to 57 in the 11th week and in foals from 24 in the first week to 16 ng/ml in the 11th week. 4. In the glucose level no diurnal rhythm was observed. 5. In mares the mean diurnal glucose level after parturition was about 58 mg/100 ml and increased to 83-85 mg/100 ml. In foals it changed from 105 to 128 mg/100 ml. 6. In the activity of FDPA no diurnal rhythm was observed. 7. The mean activity of FDPA changed in mares from 3.3 to 4.4 U and in foals from 5.7 to 7.5 U.
Flisińska-Bojanowska
A
A
Department of Vertebrate Animal Physiology, University of Warsaw, Poland.
Gill
J
J
Komosa
M
M
Kompanowska-Jezierska
E
E
D000818:Animals; D000831:Animals, Newborn / Q000097:blood / Q000254:growth & development; D001786:Blood Glucose / Q000378:metabolism*; D002940:Circadian Rhythm; D005260:Female; D005634:Fructose-Bisphosphate Aldolase / Q000097:blood*; D006736:Horses / Q000097:blood* / Q000254:growth & development; D006854:Hydrocortisone / Q000097:blood*; D007774:Lactation / Q000097:blood; D011247:Pregnancy
D001786:Blood Glucose; D005634:Fructose-Bisphosphate Aldolase; D006854:Hydrocortisone