Responses of finisher boars and gilts to dietary lysine and ractopamine

Document Type

Conference Proceeding

Publication Date

2009

Conference Title

Twelfth Biennial Conference of the Australasian Pig Science Association

Place of Publication

Cairns

ISBN

978-0-9806880-0-9

ISSN

1324 9177

Keywords

pigs, swine

Disciplines

Animal Sciences | Meat Science

Abstract

The minimum total lysine requirement for pigs between 80 and 120 kg has been reported as 0.65 g/kg (National Research Council, 1998) whilst the current recommended lysine requirements for pigs fed a diet supplemented with ractopamine (RAC) is 0.70 g/kg of total lysine (approximately 0.56 g available lysine/MJ digestible energy (DE)). More recently (Rikard-Bell et al., 2009) reported that the improvements in growth performance elicited by RAC were similar for pigs offered diets with 0.56 or 0.65 g available lysine/MJ DE. The aim of this experiment was to investigate the performance responses of finisher pigs offered a wider range of dietary lysine levels and three levels of dietary RAC.

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