Effects of short-term restraint stress on plasma concentrations of catecholamines, beta-endorphin, and cortisol in gilts.
The effects of short-term restraint stress, by means of snaring, on plasma concentrations of catecholamines, beta-endorphin, and cortisol were studied in 6 gilts. A catheter was inserted into the jugular vein, and 2 blood samples were collected before onset of stress. Thereafter, a hog snare was applied, and blood samples were collected at 0.5, 2, and 3.5 minutes after the start of snaring. Plasma epinephrine and norepinephrine concentrations increased (P < 0.001) within 0.5 minute after start of restraint and decreased thereafter. Plasma concentration of beta-endorphin increased (P < 0.05) within 2 minutes after start of restraint, whereas that of cortisol increased (P < 0.05) 3.5 minutes after start of restraint. Taken together, short-term stress, such as snaring may increase the plasma concentration of catecholamines, beta-endorphin, and cortisol in pigs.
D000704:Analysis of Variance; D000818:Animals; D004837:Epinephrine / Q000097:blood*; D005260:Female; D006854:Hydrocortisone / Q000097:blood*; D016018:Least-Squares Analysis; D009638:Norepinephrine / Q000097:blood*; D012149:Restraint, Physical; D013315:Stress, Psychological; D013552:Swine / Q000502:physiology*; D013997:Time Factors; D001615:beta-Endorphin / Q000097:blood*
D001615:beta-Endorphin; D006854:Hydrocortisone; D009638:Norepinephrine; D004837:Epinephrine