Murdoch University Research Repository

Welcome to the Murdoch University Research Repository

The Murdoch University Research Repository is an open access digital collection of research
created by Murdoch University staff, researchers and postgraduate students.

Learn more

Effects of dietary lysine on growth responses of pigs to increasing doses of ractopamine

Rikard-Bell, C.V., Pluske, J.R.ORCID: 0000-0002-7194-2164, van Barneveld, R.J., Mullan, B.P., Edwards, A.C., Gannon, N.J., Henman, D.J. and Dunshea, F.R. (2009) Effects of dietary lysine on growth responses of pigs to increasing doses of ractopamine. In: Manipulating Pig Production XII. Proceedings of the 12th Australasian Pig Science Association (APSA) Biennial Conference, 22 - 25 November, Werribee, Australia p. 182.

PDF - Published Version
Download (93kB)


Commercial recommendations for dietary lysine specifications in diets for pigs supplemented with ractopamine (RAC) is 0.56 g available lysine/MJ digestible energy (DE; King et al., 2000). A recent study confirmed that when RAC supplemented diets are formulated to 0.56 g available lysine/MJ DE, growth rate and feed efficiency are improved (Dunshea et al., 2005), together with an increase in lean tissue deposition in both sexes, although fat deposition was reduced in boars and remained constant in gilts. The aim of this experiment was to determine whether the current dietary lysine recommendations are sufficient to optimize the response in feed efficiency (FCR), growth rate (ADG) and tissue deposition in boars and gilts offered high and low doses of RAC in diets.

Item Type: Conference Paper
Murdoch Affiliation: School of Veterinary and Biomedical Sciences
Publisher: Australasian Pig Science Association
Copyright: © 2009 Australasian Pig Science Association (Inc)
Item Control Page Item Control Page


Downloads per month over past year