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| Registros recuperados: 57 | |
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| Kongsted, A.G.; Hermansen, J.E.; Claudi-Magnussen, C.; Andersen, B.H.. |
| The risk of boar taint in entire males is supposed to increase with increased age and weight. Thus, a method to reduce this risk may be to slaughter the pigs at a low age and weight. This strategy is investigated as part of a new concept for organic pig production. It is hypothesised that organic pork has to differ markedly from conventional in order to overcome the heavy price competition. A seasonal outdoor rearing system based on production of small entire males, large female pigs and sows slaughtered after their first litter is believed to be a feasible strategy for producing organic pork with high credibility and superior eating quality. The study included a traditional breed, the Danish Black-Spotted. 17 gilts farrowed in April. Within the first week... |
| Tipo: Proceedings |
Palavras-chave: Pigs. |
| Ano: 2008 |
URL: http://orgprints.org/14807/1/14807.pdf |
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| Dalgaard, Tommy; Jørgensen, Uffe; Kristensen, I.T.; Gylling, M.; Dejgaard, J.; Dubgaard, Alex; Kjeldsen, Chris; Hermansen, J.E.; Turner, K.G.; Christen, Ben; Andersen, P.S.. |
| This study presents a new approach to model the biophysical potentials for increased biomass harvest in Denmark, and a multi-criteria sustainability assessment of the socio-economic and environmental effects of different scenarios for such increased production and new biobased economy in rural landscapes. Thereby the results serve as input to the ongoing productivism – post-productivism debate related to rural spaces in Europe. Empirical results from a case study of large scale conversion to biorefenery technologies, aiming to increase the total Danish harvest of biomass by 10 million tonnes via the conversion to new types of crop production and land management, is used as an example, and will be related to the common conceptual model presented by the... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farm economics; Technology assessment; Social aspects; Farm nutrient management; Regulation. |
| Ano: 2012 |
URL: http://orgprints.org/21222/4/21222.pdf |
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| Jespersen, Lizzie Melby; Baggesen, Dorte Lau; Fog, Erik; Halsnæs, Kirsten; Hermansen, J.E.; Andreasen, Lise; Strandberg, Beate; Halberg, Niels. |
| The potential contribution of organic farming to the public goods, ‘Nature and Biodiversity’, ‘Environment’, ‘Energy and Climate’, ‘Human Health and Welfare’ and ‘Animal Health and Welfare’ in Denmark is guided and partly secured by the principles and specific requirements of the EU Organic Regulation. However, other factors, such as the production type, farm size, geographical location and—not the least—the management of the farm, also influence the contribution. Using the ban on synthetic pesticides and restricted use of antibiotics, including the requirements to compensate for and prevent such uses in organic farming, as examples, the positive and negative contributions of organic farming in relation to selected public goods were analysed. The... |
| Tipo: Journal paper |
Palavras-chave: Farming Systems Food security; Food quality and human health Research communication and quality Health and welfare Biodiversity and ecosystem services. |
| Ano: 2017 |
URL: http://orgprints.org/32338/1/10.1007_s13165-017-0193-7.pdf |
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| Dalgaard, Tommy; Olesen, Jørgen E.; Petersen, B.M.; Petersen, Søren O.; Jørgensen, Uffe; Kristensen, Troels; Hutchings, Nicholas J.; Gyldenkerne, Steen; Hermansen, J.E.. |
| Greenhouse gas (GHG) emissions from agriculture are a significant contributor to total Danish emissions. Consequently, much effort is currently given to the exploration of potential strategies to reduce agricultural emissions. This paper presents results from a study estimating agricultural GHG emissions in the form of methane, nitrous oxide and carbon dioxide (including carbon sources and sinks, and the impact of energy consumption/bioenergy production) from Danish agriculture in the years 1990-2010. An analysis of possible measures to reduce the GHG emissions indicated that a 50-70% reduction of agricultural emissions by 2050 relative to 1990 is achievable, including mitigation measures in relation to the handling of manure and fertilisers,... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover; Air and water emissions; Buildings and machinery; Landscape and recreation; Farm nutrient management. |
| Ano: 2011 |
URL: http://orgprints.org/19044/4/19044.pdf |
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| Horsted, K.; Hermansen, J.E.. |
| In typical organic egg production systems nearly all the feed is imported and fed inside the henhouse. Moreover, most of the hens stay inside the house or predominantly use the area just in front of the hen house. In consequence many systems are exposed to an unacceptable accumulation of nutrients in the most utilized areas in the hen yard. It is the hypothesis that this drawback can be affected if the feeds for a higher degree are based on foraging within the hen yard. The purpose of this study was to estimate the effect of including standing crops in the hen yard on feed intake, production parameters, recirculation of nutrients in the system and the welfare of the poultry. Two experiments with different standing crops for laying hens were conducted... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Health and welfare; Feeding and growth. |
| Ano: 2005 |
URL: http://orgprints.org/5619/1/5619.doc |
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| Kongsted, A.G.; Claudi-Magnussen, C.; Horsted, K.; Hermansen, J.E.; Andersen, B.H.. |
| The objective was to compare the performance and meat quality of two different pig breeds: The modern crossbred Landrace x Yorkshire (LY) and the traditional Danish Black-Spotted (BS) breed. The LY gilts and four of the BS gilts were inseminated with semen from Duroc (D) boars, the remaining BS gilts were served by BS boars. The experiment was performed on 26 gilts over two years. RESULTS: The Black Spotted breed in general had smaller litter sizes and weaned on average in terms of kg piglet 35% less than the modern breed combination. Crossbred piglets of BS×D had growth rates from birth to weaning comparable with piglets of LY×D. Black Spotted first parity sows were significantly fatter and less meaty, and the meat was significantly redder and darker... |
| Tipo: Journal paper |
Palavras-chave: Pigs. |
| Ano: 2011 |
URL: http://orgprints.org/18475/1/18475.pdf |
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| Eriksen, J.; Studnitz, M.; Strudsholm, K.; Kongsted, A.G.; Hermansen, J.E.. |
| Nose ringing of outdoor sows is practiced to reduce grass sward damage for environmental reasons but conflicts with natural behaviour considerations. We investigated effects of ringing pregnant and lactating outdoor sows on foraging and explorative behaviour, grass cover and nutrient deposition. The experiment included both ringed and unringed sows. For unringed sows the paddocks were either used continuously throughout the experiment or divided into two and sows were moved half way through the experimental period leaving the first used paddock for regrowth. Ringing did not prevent the sow’s rooting, but rooting was less pronounced, when sows were ringed. On average, ringing increased grass cover from 14 to 38% and from 64 to 81% in paddocks with pregnant... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover; Pigs; Air and water emissions. |
| Ano: 2006 |
URL: http://orgprints.org/10043/1/10043.pdf |
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| Manevski, Kirl; Jakobsen, Malene; Kongsted, A.G.; Geogiadis, Petros; Labouriau, R.; Hermansen, J.E.; Jørgensen, Uffe. |
| Nitrate leaching from outdoor pig production is a long-standing environmental problem for surface and groundwater pollution. In this study, the effects of inclusion of poplar trees in paddocks for lactating sows on nitrogen (N) balances were studied for an organic pig farm in Denmark. Vegetation conditions, soil water and nitrate dynamics were measured in poplar and grass zones of paddocks belonging to main treatments: access to trees (AT), no access to trees (NAT) and a control without trees (NT), during the hydrological year April 2015 to April 2016. Soil water drainage for each zone, simulated by two simulation models (CoupModel and Daisy), was used to estimate nitrate leaching from the zones in each paddock. N balances (input minus output) for the... |
| Tipo: Journal paper |
Palavras-chave: Pigs. |
| Ano: 2018 |
URL: http://orgprints.org/33775/1/1-s2.0-S0048969718328729-main.pdf |
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| Jakobsen, M.; Hermansen, J.E.; Andersen, Heidi Mai-Lis; Jørgensen, Uffe; Labouriau, R.; Rasmussen, Jim; Kongsted, A.G.. |
| Innovative strategies in free-range pig production is needed to improve the environmental performance of the system. Based on previous studies, inclusion of trees was hypothesized to improve the system’s nitrogen efficiency. We investigated sow elimination behaviour, faeces load and localisation as well as soil mineral nitrogen load in pasture based individual paddocks with and without access to two rows of poplar (Populus sp.) trees. Unlike expected sows showed no preference for eliminating in the zone with poplars but clearly avoided defecating near the hut, feed and water. Soil mineral nitrogen load showed a heterogeneous pattern as also found in previous studies. In comparison to grass, our results indicated that the poplars had an increased winter... |
| Tipo: Journal paper |
Palavras-chave: Pigs. |
| Ano: 2018 |
URL: http://orgprints.org/33906/1/Paper%20II.pdf |
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| Hermansen, J.E.; Horsted, K.; Hegelund, L.; Frantzen, C.; Johansen, N.F.. |
| Med henblik på at styrke forsknings- og udviklingsindsatsen inden for økologisk fjerkræproduktion, blev det muligt med finansiering fra Direktoratet for FødevareErhverv, i 2001 at påbegynde udviklingsprojektet ”Fjerkræets udearealer ved økologisk produktion”. Projektet tog udgangspunkt i en række interessetilkendegivelser fra fjerkræproducenter og andre interesserede indenfor økologisk fjerkræproduktion, og projektet blev planlagt i et samarbejde mellem • Brancheforeningen for Økologiske Æg- og Fjerkræproducenter • Dansk Erhvervsfjerkræ • Landsforeningen for Økologisk Jordbrug • Landskontoret for Fjerkrærådgivning og • Danmarks JordbrugsForskning som koordinerende partner Det var en grundlæggende ide i projektet at tage udgangspunkt i de medvirkende... |
| Tipo: Report |
Palavras-chave: Poultry. |
| Ano: 2005 |
URL: http://orgprints.org/9117/1/9117.pdf |
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| Hermansen, J.E.; Andersen, B.H.; Bak, S.; Giersing, M.; Kongsted, A.G.; Lauritsen, H.B.; Møller, F.; Nørgaard, N.H.; Tvedegaard, N.. |
| Selv om der de sidste fire år har været en kraftig stigning i den økologiske svineproduktion i Danmark, udgør den økologiske slagtesvineproduktion mindre end 0,5% af den totale slagtesvineproduktion, og erfaringsgrundlaget for gennemførelsen af den økologiske svineproduktion er derfor spinkelt. I mange tilfælde er svineproduktionen indrettet således, at søerne holdes på friland, mens slagtesvinene året rundt opstaldes i stalde med tilhørende udearealer, og det er for sådanne systemer, at videngrundlaget er bedst. |
| Tipo: Report chapter |
Palavras-chave: Pigs. |
| Ano: 2000 |
URL: http://orgprints.org/21615/4/21615.pdf |
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| Kongsted, A.G.; Therkildsen, M.; Hermansen, J.E.. |
| Scientific Workshop on Organic Pig Production, Hovborg Kro, Holmeåvej 2, 6682 Hovborg, DK June 12th and 13th 2013 Programme: June 12th 2013: 9-9.30: Coffee, bread, and welcome (Marianne Bonde, UHF) 9.30-10: Sandra Edwards (UK): Future challenges in organic pig production 10-11.30: Theme 1: Production of entire male pigs / Chaired by Jan Tind Sørensen The aim of organic pig production is to ensure high animal welfare and natural products. Banning castration is thus a logical step forward, but the risk of boar taint in the meat is a major barrier for marketing meat from entire male pigs. Is it possible to use genetic tools and breeding strategies to prevent boar taint? What is the effect of feeding, management, housing and hygiene? Is... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pigs. |
| Ano: 2013 |
URL: http://orgprints.org/24635/7/24635.pdf |
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| Kongsted, A.G.; Horsted, K.; Hermansen, J.E.. |
| Free-range pig production in Northern Europe is characterized by high inputs of concentrate on grassland. This increases risk of nutrient leaching, increases feed costs and puts a pressure on land resources. Pigs’ unique ability to find a part of their food directly in the field where they are kept should be taken into consideration. One below ground field forage characterized by very high yields and with great potential as fodder source is Jerusalem Artichokes (JA) tubers. The nutritional contribution from free-range foraging, growth, feed conversion and behaviour were investigated in 36 growing pigs foraging on JA and fed concentrates restrictedly (30 % of energy recommendations) or ad libitum. Behavioural observations were carried out weekly over the... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pigs. |
| Ano: 2013 |
URL: http://orgprints.org/24637/3/24637.pdf |
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| Kongsted, A.G.; Horsted, K.; Hermansen, J.E.. |
| The nutritional contributions from free-range foraging, growth, feed conversion and behaviour were investigated in 36 growing pigs foraging on Jerusalem artichokes (JA) and fed concentrates restrictedly (30% of energy recommendations) or ad libitum. Compared to the ad libitum fed pigs, the pigs fed restrictedly had a significant lower daily gain (560 vs. 1224 g pig_1), improved feed conversion ratio (17.6 vs. 42.8 MJ ME concentrate kg_1 live weight gain) and spent more time foraging JA tubers (7.9 vs. 1.1%). It is estimated that pigs fed restrictedly found approximately 60% of their energy requirement from foraging in the range. |
| Tipo: Journal paper |
Palavras-chave: Pigs. |
| Ano: 2013 |
URL: http://orgprints.org/22628/7/22628.pdf |
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| Egelyng, H.; El-Araby, A.; Kledal, P.; Hermansen, J.E.. |
| Challenged to consume with less environmental impact, consumers buy certified organic products to “proxy” environmental governance. The paper explores how far certified organic agriculture is institutionally embedded in Brazil, China, and Egypt. The three case studies illustrate how regulation, including standard-setting and certification processes differ between south and north, in terms of the evolution and nature of certification, as well as stakeholders and agency involved in shaping the regulation. A comparative analysis is presented on south-south differences in this regard along with some possible explanations of these. The paper finally discusses the perspectives in the global success of organic certification and whether it has potential to... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food systems. |
| Ano: 2010 |
URL: http://orgprints.org/18543/1/18543.pdf |
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| Registros recuperados: 57 | |
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