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| Nauta, Wytze; Baars, Nauta; Groen, Ab; Veerkamp, Roel; Roep, Dirk. |
| It is uncertain whether animals which have been bred for conventional production are capable of optimum performance in organic conditions. In conventional agriculture there is a movement towards maximum control of production conditions in order to optimise animals' yield in intensive production systems. By contrast, organic agriculture is based on natural processes and closed cycles, and takes into account the underlying connections between production factors. Following organic ideology, production capacity should be curtailed by acting in accordance with guiding principles such as naturalness, animal welfare, efficient use of fossil fuels in the farm cycle, and agri-biodiversity (IFOAM, 1994). Organic production should be tied to the land, with farms... |
| Tipo: Report |
Palavras-chave: Breeding and genetics. |
| Ano: 2001 |
URL: http://orgprints.org/4824/1/4824.pdf |
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| Nauta, Wytze. |
| Organic dairy farming started to take off in the early 1990s, when the European Union laid down organic standards for animal production. Until now, however, only incidental steps have been taken towards organic breeding and organic farmers mainly use breeding stock from conventional breeding programmes. This thesis focuses on the possibilities for breeding in organic dairy farming. This thesis starts with describing the basic backgrounds of organic dairy farming and the results of a study that was carried out in 1999-2000 on the vision on cattle breeding. The main conclusions are that breeding in organic dairy farming should be in line with the intensions of organic farming and that farmers need animals that fit to their extensive farming system. This... |
| Tipo: Thesis |
Palavras-chave: Breeding and genetics. |
| Ano: 2009 |
URL: http://orgprints.org/15761/1/2113.pdf |
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| Nauta, Wytze. |
| In the organic sector there is an ongoing debate about the development of organic breeding methods. The debate revolves around two issues: 1) how the principle of naturalness in organic agriculture (that is, using natural processes wherever possible) can be reconciled with the increasing use of modern reproduction techniques in conventional breeding; and 2) whether animals produced by conventional breeding programs are actually suitable for organic agriculture or whether the organic sector itself should start producing animals that fit into organic production systems. Investigations into these issues gave rise to a doctorate research: “Selective breeding in organic dairy production” |
| Tipo: Newspaper or magazine article |
Palavras-chave: Breeding and genetics. |
| Ano: 2010 |
URL: http://orgprints.org/16768/1/2299.pdf |
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| Prins, Udo; de Wit, Jan; Nauta, Wytze. |
| Like conventional farming, organic agriculture in the Netherlands is highly specialized. Both livestock and arable farmers have optimised production independent of each other which has led to a high use of external inputs from conventional agriculture (manure and other fertilisers and straw) and feedstuffs (mainly concentrate feed) from abroad. This situation conflicts with important principles of organic agriculture such as a balance between livestock and arable farming, closing nutrient cycles and regionally based production. In an attempt to find solutions for this dilemma, the Louis Bolk Institute (LBI) started with a series of projects called “Partner Farms” in which the LBI cooperated closely with leading edge farmers (Wit et al, 2003). In these... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Research methodology and philosophy. |
| Ano: 2005 |
URL: http://orgprints.org/4445/4/Prins_etal_4p_revised%2Ded.doc |
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