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Full or partial outdoor rearing of slaughter pigs – effects on performance, carcass quality and nutrient load

Hermansen, John E.; Eriksen, Jørgen and Strudsholm, Karin (2005) Full or partial outdoor rearing of slaughter pigs – effects on performance, carcass quality and nutrient load. Paper at: Researching Sustainable Systems - International Scientific Conference on Organic Agriculture, Adelaide, Australia, September 21-23, 2005. [Unpublished]

[thumbnail of 4368-Hermansen_etal_4p_revised-ed.pdf] PDF - German/Deutsch


An experiment with slaughter pigs from weaning to slaughter including five treatments and five replicates was carried out at the Danish organic experimental station, Rugballegård. Treatments included full or partial outdoor rearing of the pigs, and the replicates covered the seasonal effects. Pigs fed ad libitum indoors had a significantly lower feed consumption (5 MJ ME /kg gain), a lower lean percentage (2.3% points), and a higher backfat depth (1.1 mm, P < 0.05) than pigs fed ad libitum outdoors. Compared with outdoor pigs fed ad libitum, restricted feeding outdoors resulted in a significantly lower daily gain (107 g), a lower feed consumption (6.3 MJ ME/kg gain), higher lean percentage (2.1% points), and a reduced backfat (1.8 mm) (P <0.001). The content of soil nitrogen was considerably higher than for the soil outside the paddocks. Despite a considerable variation within the paddocks, N was distributed throughout the paddock. The present investigation highlights the fact that outdoor rearing of organic finishers may be a competitive option even in a temperate climate and all year round.

EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:grazing, N-leaching, production strategy
Subjects: Animal husbandry > Production systems > Pigs
Research affiliation: International Conferences > 2005: 1st ISOFAR Conference > 2005: 1st ISOFAR Conference
Deposited By: ISOFAR
ID Code:4368
Deposited On:23 Oct 2006
Last Modified:12 Apr 2010 07:30
Document Language:English
Refereed:Not peer-reviewed
Additional Publishing Information:The paper archived here is the final paper submitted by the authors to the conference Researching Sustainable Systems.
The final and edited papers are available at the following publication:
Köpke, Ulrich; Niggli, Urs; Neuhoff, Daniel; Cornish, Peter; Lockeretz, Willie und Willer, Helga, (Hrsg.) (2005) Researching Sustainable Systems. Proceedings of the First Scientific Conference of the International Society of Organic Agriculture Research (ISOFAR) Held in Cooperation with the International Federation of Organic Agriculture Movements (IFOAM) and the National Association for Sustainable Agriculture, Australia (NASAA), 21 - 23 September 2005, Adelaide Convention Centre, Adelaide, South Australia. Research Institute of Organic Agriculture FiBL, CH-Frick, and International Society of Organic Agriculture Research (ISOFAR), c/o Institute of Organic Agriculture (IOL), DE-University of Bonn. https://orgprints.org/4013/
Distribution: Paper copies may be ordered from FiBL at a cost of 28 Euros plus mailing costs (see FiBL shop at http://www.fibl.org/shop); FiBL order number 1394. A PDF version of the proceedings is available free of charge for ISOFAR members via the member area of www.isofar.org.
The final papers submitted by the authors are available at https://orgprints.org/view/projects/int-conf-isofar-2005.html.

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