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| Fürmetz, A.; Keppler, C.; Knierim, U.; Deerberg, F.; Heß, J.. |
| The use of the free-range area by laying hens housed in a mobile system and the resulting condition of the range were investigated. The free-range was used very intensively. On an average of nine complete observation days 35 % of the birds (23 – 44 % means per day) were outside the house. The maximum of animals in the free range was 77 %. 75 % (60 – 95 %) of the hens outside the house stayed in an area of 20 m around the house. This led to deteriorated conditions of the range in these areas. By moving the mobile house regularly (after 2 weeks in summer and 6 weeks in winter) a destruction of the vegetation could be avoided, while after not moving the house for three months in winter a complementary seeding became necessary. We conclude that the use of... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Poultry. |
| Ano: 2005 |
URL: http://orgprints.org/3773/1/3773.pdf |
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| Fürmetz, A.; Keppler, C.; Knierim, U.; Deerberg, F.; Heß, J.. |
| In the last years free range poultry was often criticised for its negative impacts on environment. As the animals do not use the run equally, a big part of the excreted nutrients are accumulated in the area close to the poultry house. This can lead to an increased rate of nutrient loss especially nitrogen by leaching. Within this study the use of a mobile housing system for 1.000 layers on an organic farm in North Hessia with a mean of 700 mm precipitation per year and an average of 8,9°C (soil texture: loam in the first, silt loam in the second year) was observed for two years. A documentation and optimization of the management and regular investigations into the contents of mineral nitrogen in all parts of the outdoor run were carried out. The aim of... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Poultry; Air and water emissions. |
| Ano: 2005 |
URL: http://orgprints.org/3772/1/3772.pdf |
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