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Organic-Conventional Dairy Systems Trial in New Zealand: Four Years’ Results

Kelly, Terry; Butcher, Natalie; Harrington, Kerry; Holmes, Colin; Horne, Dave; Kemp, Peter; Palmer, Alan; Quinn, Alison; Shadbolt, Nicola and Thatcher, Alan (2005) Organic-Conventional Dairy Systems Trial in New Zealand: Four Years’ Results. Paper at: Researching Sustainable Systems - International Scientific Conference on Organic Agriculture, Adelaide, Australia, September 21-23, 2005. [Unpublished]

[thumbnail of 4392-Kelly_etal_4p_revised-ed.pdf] PDF - German/Deutsch


The Organic-Conventional Comparative Dairy Systems trial at Massey University began in August 2001, and the organic farmlet achieved certification in August 2003. The trial is unique because it is the only comparative grassland-based open grazing dairy study in the world. The organic and conventional systems are managed individually according to best practice, and both are intensively monitored for production, animal health, and environmental impacts. The systems remained similar for the first two years, but began to diverge in the third and fourth years. Production has been 10-20% lower on the organic farm, but environmental impacts appear to be less than on the conventional unit, and net incomes would be similar given a 20% price premium for the organic product. Animal health issues have been manageable on the organic farmlet, and not too dissimilar from the conventional farmlet. Full results after four years of the trial will be available and presented at the conference.

EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Organic Dairy Farming, comparative systems trial, organic production systems
Subjects: Animal husbandry > Production systems
Research affiliation: International Conferences > 2005: 1st ISOFAR Conference > 2005: 1st ISOFAR Conference
Deposited By: ISOFAR
ID Code:4392
Deposited On:18 Nov 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Refereed:Not peer-reviewed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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