Improved response to ractopamine in finisher gilts as dietary lysine is increased
Document Type
Conference Proceeding
Publication Date
11-2011
Conference Title
Thirteenth Biennial Conference of the Australasian Pig Science Association
Place of Publication
Werribee, Victoria
ISBN
978-0-9806880-1-6
ISSN
1324 9177
Keywords
nutrition, gilts, pigs, swine
Disciplines
Meat Science | Other Animal Sciences
Abstract
Ractopamine (RAC; Paylean, Elanco Animal Health, West Ryde, NSW) is a β-agonist that, when included in the diet for the last four weeks pre-slaughter, increases protein deposition and average daily gain (ADG), and improves feed conversion ratio (FCR; Dunshea et al., 2005). Since a major effect of RAC is to increase protein deposition, it is important that the supply of essential amino acids in the diet is sufficient to meet this additional requirement. The accepted commercial recommendation for diets containing RAC in Australia is 0.56 g available lysine (Av Lys)/MJ digestible energy (DE). The hypothesis for this experiment was that the inclusion of RAC in the diet of finisher gilts will enhance performance and the level of lysine required to support maximum performance.
Recommended Citation
Mullan, B P,
Capozzalo, M M,
Payne, H G,
Hagan, R,
Dunshea, F R,
and
Kim, J C.
(2011), Improved response to ractopamine in finisher gilts as dietary lysine is increased, Thirteenth Biennial Conference of the Australasian Pig Science Association, Werribee, Victoria, pp.208-208.
https://library.dpird.wa.gov.au/conf_papers/236
