Swine

Evaluation of the Responsiveness of Swine Divergently Selected for Feed Efficiency to an Exogenous Adrenocorticotropin Hormone (ACTH) Challenge

Authors
  • Jessica D. Jenkins (Iowa State University)
  • Nicholas K. Gabler (Iowa State University)
  • Lloyd L. Anderson (Iowa State University)
  • Jack C. M. Dekkers (Iowa State University)
  • Anna K. Johnson (Iowa State University)
  • Frank Dunshea (University of Melbourne)

Abstract

The relationship between stress and feed efficiency in finisher swine was investigated through an adrenocorticotropin hormone (ACTH) challenge. The objective of this study was to evaluate the role of the ACTH-cortisol axis and the stress response in feed efficiency using pigs divergently selected for RFI. Gilts divergently selected for residual feed intake (RFI) were used as a model for feed efficiency and were challenged with 0.2 IU/kg BW of exogenous porcine ACTH. Serial blood samples were collected and plasma cortisol concentrations were determined. These results indicate that high-RFI pigs(lower feed efficiency) are more responsive to an ACTH challenge, but cope equally as well as pigs selected for low-RFI (higher feed efficiency).

Keywords: ASL R2814, Swine Feed Efficiency

How to Cite:

Jenkins, J. D., Gabler, N. K., Anderson, L. L., Dekkers, J. C., Johnson, A. K. & Dunshea, F., (2013) “Evaluation of the Responsiveness of Swine Divergently Selected for Feed Efficiency to an Exogenous Adrenocorticotropin Hormone (ACTH) Challenge”, Iowa State University Animal Industry Report 10(1). doi: https://doi.org/10.31274/ans_air-180814-1251

Downloads:
Download pdf

245 Views

69 Downloads

1Citations

Published on
01 Jan 2013
Peer Reviewed