A step-up dietary ractopamine (Paylean) program improves growth performance and carcass traits in all sexes
Document Type
Conference Proceeding
Publication Date
2005
Conference Title
Tenth Biennial Conference of the Australasian Pig Science Association
Place of Publication
Christchurch
ISBN
978-0-9806880-4-7
ISSN
1324-9177
Keywords
pigs, swine
Disciplines
Meat Science
Abstract
The ß-agonist ractopamine (Paylean®, RAC) has recently been approved in Australia for use as a dietary ingredient to improve production efficiency in pigs. Dietary RAC increases lean tissue deposition and daily gain in pigs fed protein-adequate diets (Dunshea et al., 1993) when fed at 20 ppm. The effects of RAC are most pronounced in the first two weeks of feeding and decline thereafter due to down-regulation of ß-receptors (Dunshea 1993). A possible way to counter down-regulation is to increase the dose of RAC during the treatment period. The aim of this investigation was to determine if the stimulation in growth performance could be maintained over 31 days by using a step-up RAC feeding program.
Recommended Citation
Rikard-Bell, C V,
Curtis, M A,
van Barneveld, R J,
Mullan, B P,
Edwards, A C,
Gannon, N J,
and
Henman, D J.
(2005), A step-up dietary ractopamine (Paylean) program improves growth performance and carcass traits in all sexes, Tenth Biennial Conference of the Australasian Pig Science Association, Christchurch, pp.153-153.
https://library.dpird.wa.gov.au/conf_papers/195
