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Registros recuperados: 8
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Welchen Einfluss hat der Weidegang auf das Tierwohl von Milchkühen? Erste Ergebnisse des Welfare Quality® Protokolls bei ganzjähriger Stallhaltung und Sommerweidegang Organic Eprints
Wagner, Kathrin; Brinkmann, Jan; March, Solveig; Hinterstoißer, P.; Warnecke, Sylvia; Schüler, Maximilian; Paulsen, Hans Marten.
Grazing provides livestock better opportunities to act out their species specific behaviour compared to the restrictive stable conditions. Studies on the effect of grazing on animal welfare in dairy farming in Germany are rare and have not been conducted under the specific conditions of organic dairy farming. The aim of the present study was to examine the effects of grazing on animal welfare of dairy cows in organic and conventional farming based on the Welfare Quality® protocol for dairy cattle. In this paper, we present the initial evaluation of a comparison between zero grazing and summer grazing. The first results indicate an improvement in most welfare principles during the summer months for dairy cows with summer grazing, except for between...
Tipo: Conference paper, poster, etc. Palavras-chave: Dairy cattle; Health and welfare.
Ano: 2017 URL: http://orgprints.org/31914/1/Welchen%20Einfluss%20hat%20der%20Weidegang%20auf%20das%20Tierwohl%20von.pdf
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Eiweiß- und Energieversorgung in 34 konventionellen und ökologischen Milchviehherden Ergebnisse aus einem Netzwerk von Pilotbetrieben Organic Eprints
Hinterstoißer, P.; Schulz, Franz; Schüler, Maximilian; Wagner, Kathrin; Brinkmann, Jan; March, Solveig; Paulsen, Hans Marten.
For reasons of animal health, milk yield and for environmental issues an optimal supply of protein and energy for dairy cows is essential. The aim of this study is to examine potential protein and energy malnutrition and surplus in dairy herds. We present a comparison of the protein and energy supply between 18 conventional and 16 organic dairy herds. Initial results indicate an undersupply on energy in the first one hundred days of lactation in both the organic and conventional feeding regimes. It is easier to provide an adequate protein supply in conventional conditions in the first one hundred days than in organic ones. A balanced supply is guaranteed for a mere 21,3 % of the organic cows. In the second one hundred days this increases to 26,5 %,...
Tipo: Conference paper, poster, etc. Palavras-chave: Dairy cattle; Policy environments and social economy.
Ano: 2017 URL: http://orgprints.org/31926/1/Eiwei%C3%9F-%20und%20Energieversorgung%20in%2034%20konventionellen%20und.pdf
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Auswirkungen der Berechnung der funktionellen Einheit in der Milchproduktion auf das Ergebnis von Ökobilanzen Organic Eprints
Schüler, Maximilian; Koesling, Matthias; Paulsen, Hans Marten.
Life cycle assessment (LCA) allows systematic comparisons of environmental performance between different products. The functional unit in LCA for milk production is typically set to 1 kg energy corrected milk. This does not however suffice as definition to allow for comparing different studies. The definition of reference flow can introduce a bias between organic and conventional farming systems. We strongly encourage to include definition of reference flow calculation, choice of algorithm for energy calculation as well as choice of energy content of milk in the communication of any results.
Tipo: Conference paper, poster, etc. Palavras-chave: Dairy cattle; Biodiversity and ecosystem services.
Ano: 2017 URL: http://orgprints.org/31922/1/Auswirkungen%20der%20Berechnung%20der%20funktionellen%20Einheit%20in.pdf
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Phosphor-Bodenbilanzen von Grünland- und Ackerflächen auf einem ökologischen Milchviehbetrieb Organic Eprints
Ohm, Magdalena; Schüler, Maximilian; Paulsen, Hans Marten.
Mineral phosphorus (P) fertilizers from fossil reserves are finite which puts agriculture at risk of losing soil fertility. This study calculates P soil balances of an organic dairy farm in Northern Germany to focus on potentials and variations in the farm P cycle. P flows were different between the years because yield levels and amount of manure application varied. Different plant species showed different P export which depended mainly on biomass export. This can also be seen as their site specific mobilization potential. The highest mean P export between 2010 and 2012 was measured with maize (mean 30.4, range 17.7-38.2 kg P ha-1 a-1) and grass-clover (mean 23.7, range 17.3-29.5 kg P ha-1 a-1). By grazing, permanent grassland showed a mean P mobilization...
Tipo: Conference paper, poster, etc. Palavras-chave: Farm nutrient management.
Ano: 2015 URL: http://orgprints.org/27197/1/27197_ohm.pdf
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Bedeutung der Modellvalidität für die Ökobilanzierung von landwirtschaftlichen Produkten – Vergleich zweier Milchrindras-sen Organic Eprints
Schüler, Maximilian; Paulsen, Hans Marten.
In the experimental station of the Thünen-Institute of Organic Farming the dairy breeds Holstein-Friesian (SBT) and Red Holstein double usage (RBT) are kept in separate herds under identical conditions. By means of a material flow FARM-Model, designed with the life cycle assessment (LCA) and material flow software Umberto, an assessment from cradle to farm gate of standard environmental impact categories was undertaken. While the BH has a better environmental performance due to higher milk yields the results depend largely on used algorithms in the model. When benchmarking different farms in terms of environmental performance modeling uncertainty has to be taken into account.
Tipo: Conference paper, poster, etc. Palavras-chave: Air and water emissions.
Ano: 2013 URL: http://orgprints.org/21537/3/21537_Sch%C3%BCler.pdf
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Optimierungsansätze zur Verbesserung von Nachhaltigkeit, Ressourceneffizienz und Tierwohl in ökologischen und konventionellen Betrieben im Netzwerk Pilotbetriebe Organic Eprints
Paulsen, Hans Marten; Schmid, Harald; Beisecker, R.; Schröder, K.; Warnecke, Sylvia; Hinterstoißer, P.; Wagner, K.; Schüler, Maximilian; Schulz, Franz; Ambros, C.; Koopmann, Regine; March, Solveig; Brinkmann, Jan; Chmelíková, Lucie; Anke, S.; Seith, T.; Becker, Heiko; von Stieglitz, I.; Sanders, J.; Hülsbergen, Kurt-Jürgen.
In a network of organic and conventional pilot farms with dairy and/or arable production in Germany (www.pilotbetriebe.de) aspects of sustainability, resource efficiency, animal health and welfare and economic aspects are analysed. This is based on on-farm assessments and on whole farm modelling. In the first interdisciplinary workshops on the project farms results were presented and scenarios were developed in a participatory approach by scientists, consultants and farmers to improve N, P and land use efficiency as well as dairy health and welfare. Typical areas of action to optimize sustainability in these aspects were identified on the farms, e.g., complete accounting of manure N (N balance), enrichment of crop rotations with clover grass and cover...
Tipo: Conference paper, poster, etc. Palavras-chave: Policy environments and social economy Education; Extension and communication Farm nutrient management.
Ano: 2017 URL: http://orgprints.org/31829/1/Windows%207%20printed%20document-2.pdf
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Measurement methods on pastures and their use in environmental life-cycle assessment Organic Eprints
Ohm, Magdalena; Schüler, Maximilian; Paulsen, Hans Marten; Warnecke, Sylvia; Rahmann, Gerold.
Grassland is an important and energy extensive feed source for livestock and good pasture management is required to maintain its productivity. Due to the selective grazing behavior of dairy cows and site and management related sward variability it is difficult to estimate pasture yield or pasture intake. A proper estimation of feed intake of animals on grassland enables the farmer to appropriately manage his pastures. Measurements of the variable feed offer at pasture plots with a rising plate meter are relatively quick. They offer a data basis to improve grazing and pasture management. These data are also used to describe material flows from grassland. On the explored pasture plots high differences in the dry matter intake of the cows were found....
Tipo: Conference paper, poster, etc. Palavras-chave: Feeding and growth; Air and water emissions.
Ano: 2014 URL: http://orgprints.org/23884/1/23884%20Ohm_MM.pdf
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Large variation in nitrogen efficiency among organic and non-organic farms Organic Eprints
Hansen, Sissel; Koesling, Matthias; Schüler, Maximilian; Fystro, Gustav; Bleken, Marina Azzaroli.
Agricultural production is requested to be environmental friendly and resource efficient. A literature review of farm surveys and prototype farm studies found that increasing use of N fertilizer and imported feed increased the yields and the productivity of dairy farms, but also increased the N-surplus. We studied the N-efficiency and cause of variation in organic and non-organic commercial dairy farms. Increased amount of purchased-N per ha farmland increased the farm N-surplus per ha on organic and non-organic farms. Increased amount of purchased-N tended to decrease N-efficiency, but not on non-organic farms. The correlation between the N-surplus per unit of produce and N-purchase was weak. The organic farms had lower N-surplus per ha than the...
Tipo: Conference paper, poster, etc. Palavras-chave: Production systems; Dairy cattle; Farm nutrient management.
Ano: 2016 URL: http://orgprints.org/31205/1/Hansen%20et%20al.%202016.%20LARGE%20VARIATION%20IN%20NITROGEN%20EFFICENCY%20AMONG%20ORGANIC%20AND%20NON-organic%20dairy%20farms_27%20-29%20June%2C%20Skara%20Sweden%2C%20pp%2082-83%2C%20Abstract.pdf
Registros recuperados: 8
Primeira ... 1 ... Última
 

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