Diurnal rhythms in plasma cortisol, insulin, glucose, lactate and urea in pigs fed identical meals at 12-hourly intervals

Diurnal rhythms in plasma cortisol, insulin, glucose, lactate and urea concentrations were investigated in eight catheterized pigs of ∼35 kg BW. Pigs were fed isoenergetic/isoproteinic diets at a restricted level (2.5×maintenance requirement for energy) in two daily rations (06:00 and 18:00 hours) i...

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Bibliographic Details
Published in:Physiology & behavior 2005-03, Vol.84 (3), p.497-503
Main Authors: Koopmans, Sietse J., van der Meulen, Jan, Dekker, Ruud, Corbijn, Henk, Mroz, Zdzislaw
Format: Article
Language:English
Subjects:
amino-acids
Animals
Autonomic Nervous System - physiology
Blood Glucose - metabolism
Circadian
Circadian Rhythm - physiology
circadian-rhythm
corticosterone
Cortisol
diabetic rats
Diurnal
Eating - physiology
Fasting
growing pigs
Hydrocortisone - blood
Insulin
Insulin - blood
invivo
Lactate
Lactic Acid - blood
Male
metabolism
Pigs
Pituitary-Adrenal System - physiology
Postprandial Period
Prandial
protein
responses
sensitivity
Swine - blood
Urea
Urea - blood
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Summary:Diurnal rhythms in plasma cortisol, insulin, glucose, lactate and urea concentrations were investigated in eight catheterized pigs of ∼35 kg BW. Pigs were fed isoenergetic/isoproteinic diets at a restricted level (2.5×maintenance requirement for energy) in two daily rations (06:00 and 18:00 hours) in order to obtain equal intervals between feed intake. Preprandial plasma cortisol concentration was 22±3 ng/mL in the morning and 14±2 ng/mL in the evening ( p
ISSN:0031-9384
1873-507X
DOI:10.1016/j.physbeh.2005.01.017