Plasma calcitonin and parathyroid hormone levels in growing pigs on different diets. II. Low calcium diet

Abstract

Our data seemed to confirm that CT in this species might play a more important role than PTH in plasma calcium regulation. Special attention has been given to the role of plasma magnesium in CT-PTH relationships.Introdudion.In lactating cows the marked hypocalcemia occurring during parturient paresis is associated with elevated values of plasma parathyroid hormone (PTH) (Blum, Mayer and Potts, 1974 ;Blum et al., 1974 ;Garel and Barlet, 1975). A rise in plasma PTH levels is also observed after intravenous infusion of EGTA or EDTA in cows (Blum and Fischer, 1975 ;Sherwood et al., 1966 ;Saeki and Hayashi, 1976). However,