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Combining a ractopamine feeding regime and porcine somatotropin has additive effects on finisher pig performance

Rikard-Bell, C.V., Pluske, J.R., van Barneveld, R.J., Mullan, B.P., Edwards, A.C., Gannon, N.J., Henman, D.J. and Dunshea, F.R. (2009) Combining a ractopamine feeding regime and porcine somatotropin has additive effects on finisher pig performance. In: Manipulating Pig Production XII. Proceedings of the 12th Australasian Pig Science Association (APSA) Biennial Conference, 22 - 25 November, Werribee, Australia p. 70.

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Abstract

Treatment of finisher pigs with dietary ractopamine (RAC; Paylean®, Elanco Animal Health, NSW) improves daily gain and feed efficiency commensurate with increased protein deposition in finishing pigs (Dunshea et al., 1993). However, effects of RAC on P2 fat deposition are equivocal. Dunshea et al. (1993) found no change in gilts and barrows, whilst a trend towards reduced P2 depth was observed in boars fed dietary RAC. Exogenous porcine somatotropin (pST; Reporcin®, OzBioPharm Pty Ltd, Victoria) improves daily gain and feed efficiency and increases the ratio oflean to fat in carcases of boars, gilts and barrows (Campbell et al., 1989). As both technologies are applied at the end of the finishing phase, it is of interest to determine whether a combination of RAC and pST has additive effects on pig performance.

Publication Type: Conference Paper
Murdoch Affiliation: School of Veterinary and Biomedical Sciences
Publisher: Australasian Pig Science Association
Copyright: © 2009 Australasian Pig Science Association (Inc)
URI: http://researchrepository.murdoch.edu.au/id/eprint/28636
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