Go to Top Go to Bottom
Ruminant Nutrition and Forage Utilization
Asian-Australasian Journal of Animal Sciences 2005;18(10): 1430-1434.
DOI: https://doi.org/10.5713/ajas.2005.1430    Published online December 2, 2005.
Urinary Cortisol Levels in Japanese Shorthorn Cattle before and after the Start of a Grazing Season
Y. Higashiyama, H. Narita, M. Nashiki, M. Higashiyama, T. Kanno
We conducted two experiments to assess the effect of transfer from housing to grazing on stress hormone secretion in cattle using urine samples. In a preliminary experiment, urine samples were collected following an adrenocorticotrophic hormone (ACTH) challenge, and cortisol levels in urine were compared with the levels in plasma. In a second experiment, urinary cortisol was measured before and after the start of a grazing season in 6 Japanese Shorthorn cows, all of which had experienced grazing before. In experiment 1, urinary cortisol showed a pattern of changes similar to that of plasma with a 0.5-h temporal lag time, and the peak levels were 4 to 10 times higher than the basal levels. In experiment 2, the urinary cortisol levels in cows did not change after the cows were let out to pasture, with no decreases in body weight. This study suggests that the transfer from housing to grazing did not affect physiological responses to cause high excretion of urinary cortisol in grazing-experienced cattle using a non-invasive sampling method.
Keywords: Cortisol; Urine; Stress; Cattle
METRICS Graph View
  • 5 Crossref
  • 6 Scopus
  • 2,182 View
  • 14 Download
Related articles

Editorial Office
Asian-Australasian Association of Animal Production Societies(AAAP)
Room 708 Sammo Sporex, 23, Sillim-ro 59-gil, Gwanak-gu, Seoul 08776, Korea   
TEL : +82-2-888-6558    FAX : +82-2-888-6559   
E-mail : jongkha@hotmail.com               

Copyright © 2020 by Asian-Australasian Journal of Animal Sciences. All rights reserved.

Close layer
prev next