Effects of age and maternal reactivity on the stress response of the pituitary-adrenocortical axis and the sympathetic nervous system in neonatal pigs

adrenal glands adrenaline age blood cerdas cerdo edad epinefrina epinephrine estres glucocorticoides glucocorticoids hydrocortisone hypophyse immobilisation immobilization nervous system newborn animals noradrenaline norepinefrina norepinephrine piglets pituitary gland porcelet porcin sang sangre sistema nervioso sows stress swine truie