PMID: 8582857Sep 1, 1995Paper

Adrenal responses of Angus x Hereford cattle to the stress of weaning

Journal of Animal Science
A M Lefcourt, T H Elsasser

Abstract

To test adrenal responsiveness of beef cattle to stress, plasma norepinephrine, epinephrine, and cortisol responses of Angus x Hereford cattle to weaning were measured in blood samples taken from 1) eight cows and their 4- to 6-mo-old calves before and after separation and, the following day, before and after being reunited and 2) an equal number of control animals. After separation and before they were reunited, dams were returned to their original pen and calves to an adjacent pen. Experimental trials were conducted every 2 wk and included two cow/calf pairs per trial. Norepinephrine concentrations tended to increase in calves after separation, were increased (+82 pg/mL, P < .01) on the 2nd d before animals were reunited, and decreased (-88 pg/mL, P < .01) after animals were reunited. Epinephrine concentrations tended to increase in calves after separation, were increased in calves (+128 pg/mL, P < .001) and dams (+104 pg/mL, P < .001) on the 2nd d before animals were reunited, and decreased after calves (-162 pg/mL, P < .001) and dams (-101 pg/ml, P < .001) were reunited. There were no significant effects of time on catecholamine concentrations for control animals. Cortisol concentrations for treated and control animals tend...Continue Reading

Citations

Mar 21, 2007·Journal of Animal Science·M L MerrillT W Geary
Mar 24, 2012·Animal : an International Journal of Animal Bioscience·R UngerfeldG Quintans
Sep 1, 2009·Journal of Animal Science·J A CarrollC C Chase
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Aug 31, 2011·Stress : the International Journal on the Biology of Stress·Regina ErberChristine Aurich
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Nov 21, 2014·Animal Science Journal = Nihon Chikusan Gakkaihō·Christian LambertzMatthias Gauly
Oct 27, 2018·Journal of Veterinary Research·Alfredo Rosamel RodriguezHedie Almagro Bustamante
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Jan 25, 2019·Stress : the International Journal on the Biology of Stress·Brittni P LittlejohnRonald D Randel
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May 17, 2011·Acta Veterinaria Scandinavica·Daniel EnríquezRodolfo Ungerfeld
Jul 6, 2014·Reproductive Biology and Endocrinology : RB&E·Toree L BovaErdoğan Memili

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