01303naa a2200217 a 450000100080000000500110000800800410001910000170006024501210007726000090019852006950020765000120090265000170091465000190093165000140095065000170096465000240098165300120100570000170101777300510103415309892005-03-23       1998    bl uuuu     u00u1 u    #d1 aPAYNE, J. H.  aEffect of adrenalin and propranolol on progesterone and oxytocin secretion in vivo during the caprine estrous cycle.  c1998  aThe effects of jugular infusions of adrenalin and the (b-adrenergic receptor antagonist propranolol on plasma concentrations of progesterone and oxytocin were examined at 2 different stages of the caprine estrous cycle. Adrenalin (25 mg.kg-1h-1) significantly (P &lt 0.05) increased oxytocin secretion on Day 3 and Day 10 of the cycle (estrus = Day O); progesterone concentrations were significantly (P &lt 0.05) elevated on Day 10 alone. Propranolol had no effect on progesterone secretion yet significantly (P &lt 0.05) reduced oxytocin concentrations on Day 3. These results suggest that there may be neuroendocrine involvement in the regulation of luteal oxytocin secretinn in the goat.  aCaprino  aCiclo Estral  aEndocrinologia  aOxitocina  aProgesterona  aReprodução Animal  aAdrenal1 aCOOKE, R. G.  tTheriogenologygv. 49, n. 4, p. 837-844, 1998.