Roozen A W, Tsuma V T, Magnusson U
Department of Obstetrics and Gynaecology, Swedish Univesity of Agricultural Sciences, Uppsala.
Am J Vet Res. 1995 Sep;56(9):1225-7.
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.
采用圈套法对6头后备母猪施加短期束缚应激，研究其对血浆中儿茶酚胺、β-内啡肽和皮质醇浓度的影响。将导管插入颈静脉，在应激开始前采集2份血样。此后，应用猪用圈套器，并在圈套开始后0.5、2和3.5分钟采集血样。束缚开始后0.5分钟内，血浆肾上腺素和去甲肾上腺素浓度升高（P<0.001），此后降低。束缚开始后2分钟内，血浆β-内啡肽浓度升高（P<0.05），而皮质醇浓度在束缚开始后3.5分钟升高（P<0.05）。综上所述，短期应激，如圈套法可能会增加猪血浆中儿茶酚胺、β-内啡肽和皮质醇的浓度。
