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| Registros recuperados: 36 | |
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| Mogensen, Lisbeth; Ingvartsen, Klaus L.; Kristensen, Troels; Seested, Susanne; Thamsborg, Stig M.. |
| This experiment presents the effect of 100% organic feed rations grown at an equal area per cow on milk production performance and metabolic responses. A total of 174 Danish Holstein cows were included in two experiments on two commercial organic dairy farms during the winter 2000/2001. Three types of supplementary feed were examined: 5 kg cereals, 3 kg rapeseed/cereal pellet or 1 kg rapeseed cake fed with a mixture of clover grass silage, whole crop silage and grass pellets ad libitum. The supplement of rapeseed/cereal pellet compared with cereals tended to decrease both milk fat and protein content, whereas fat and protein yield were unaffected. Milk yield was increased by supplement of rapeseed/cereal pellet compared with cereals in experiment 1, but... |
| Tipo: Journal paper |
Palavras-chave: Dairy cattle. |
| Ano: 2004 |
URL: http://orgprints.org/4682/1/4682.pdf |
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| Mogensen, Lisbeth; Kristensen, Troels. |
| Forbedres grovfoderkvaliteten, via øget andel kløvergræs, stiger såvel foderoptagelsen som mælkeydelsen per ko per år og der opnås en meget positiv effekt på bedriften økonomien. Modelberegninger viser imidlertid også at kvælstofoverskud per ha i stiger dette system, med deraf øget risiko for kvælstofudvaskning. Som en konsekvens heraf er der behov for at se kritisk på den traditionelle ompløjning af græsmarkerne efter 2 til 3 år, frem for mere længerevarende marker. |
| Tipo: Report chapter |
Palavras-chave: Production systems. |
| Ano: 2005 |
URL: http://orgprints.org/4706/1/4706.pdf |
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| Vaarst, Mette; Alban, Lis; Jensen, Margit Bak; Mogensen, Lisbeth. |
| I interviewene blev kalvene fremhævet som et både problematisk og kritisk område i den økologiske besætning (kapitel 2 & 3). Fodring, paratuberkulose (især i forbindelse med kalvens første døgn hos moderen), opstaldning, udeophold og medicinering blev nævnt som mulige årsager til problemer. Det blev desuden nævnt, at der kunne være problemer med at sammensætte en god foderration. Vedrørende opstaldning af kalvene blev kalvenes patning på hinanden nævnt som et problem. Enkelte konsulenter nævnte manglende hygiejne og generelle problemer med opstaldningen. Sygdomsproblemer som følge af coccidiose ved kalvenes tidlige udeophold blev af de fleste nævnt som et stort problem. Flere dyrlæger nævnte, at eftersom reglerne vedrørende medicinhåndtering i... |
| Tipo: Report chapter |
Palavras-chave: Health and welfare. |
| Ano: 2000 |
URL: http://orgprints.org/13753/1/13753.pdf |
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| Søegaard, Karen; Sehested, Jakob; Eriksen, Jørgen; Askegaard, Margrethe; Mogensen, Lisbeth; Jensen, Søren K.. |
| Urter i græsmarken er blevet undersøgt i forsøg på fem økologiske kvægbrug og ved Foulum. Vækst, konkurrenceevne, foderværdi og mineralindhold i de enkelte arter i tre forskellige blandinger er undersøgt for betydningen af gylletilførsel, slæt/afgræsning og markens alder, og variation mellem gårde er beskrevet. De enkelte urter viste generelt det samme mønster på de forskellige steder, hvilket gør det muligt med generelle konklusioner. En oversigt over konklusioner for de enkelte urter er vist på sidste side af bilaget. Cikorie og vejbred var de stærkeste og indeholdt derudover en stor andel mineraler. Kommen var også forholdsvis stærk, især under slætforhold. Bibernelle og kællingetand var forholdsvis svage konkurrenter, men mange steder var der dog en... |
| Tipo: Report chapter |
Palavras-chave: Farming Systems; Animal husbandry; Feeding and growth; Farm nutrient management. |
| Ano: 2010 |
URL: http://orgprints.org/17910/1/17910.pdf |
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| Mogensen, Lisbeth. |
| På 5 økologiske gårde blev der således fundet en positiv sammenhæng mellem vitaminindholdet i grovfoderet og indholdet i mælken. Vitaminforsyningen er af stor vigtighed for køernes sundhed og trivsel, ligesom den har stor indflydelse på den producerede mælks ernæringsmæssige kvalitet. Det højeste indhold af vitaminer findes normalt i friske grønne blade. For malkekvæg kan der derfor være problemer med at sikre forsyningen med de fedtopløselige vitaminer i vinterperioden, hvor fodret består af konserverede og lagrede fodermidler, mens køer på græs i sommerperioden oftest vil få vitaminbehovet opfyldt. I FØJO III projektet ECOVIT arbejder forskere fra Århus Universitet blandt andet med, hvordan den enkelte bedrift kan blive selvforsynende med vitaminer. |
| Tipo: Newspaper or magazine article |
Palavras-chave: Dairy cattle; Animal husbandry. |
| Ano: 2010 |
URL: http://orgprints.org/17868/1/17868.pdf |
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| Mogensen, Lisbeth; Kristensen, Troels. |
| An experiment was carried out to investigate the effects of barley or rape seed cake as supplement to silage given ad libitum on milk production and health of dairy cows. A total of 103 cows were divided into two groups on two farms. Before the experiment, the cows had an average milk yield of 26.9 kg ECM and they were in milk for an average of 99 days. Their average parity was 2.3 and their weight 596 kg. The cows in each group received either solely barley or an isoenergetic mixture of rape cake seed and barley as supplement. The supplement feed was fed frequently by automatic feeding. A mixture of clover grass silage and whole crop silage was fed ad libitum. The daily milk yields were not significantly different in the barley and rape seed cake... |
| Tipo: Journal paper |
Palavras-chave: Dairy cattle. |
| Ano: 2002 |
URL: http://orgprints.org/1342/1/Acta_LIM_2002_52.pdf |
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| Mogensen, Lisbeth; Troels, Kristensen. |
| A total of 246 Danish Holstein cows were included in three experiments. In each experiment, Barley (B) was compared with another type of supplementary feeds: a Concentrate mixture (C), Grass pellets (G), or Fodder beets (F). The concentrate mixture resulted in a higher (P = 0.002) milk yield (25.9 vs 23.7 kg), a tendency of a lower (P = 0.07) fat content (4.08 vs 4.25%), and a higher (P = 0.006) ECM yield (25.7 vs 24.1 kg) compared to feeding barley as supplement at the same energy level. Grass pellets resulted in a lower (P = 0.01) milk fat content (3.74 vs 4.07%), a tendency of a lower (P = 0.12) protein content (3.14 vs 3.23%), but no different milk or ECM yield compared to feeding barley as supplement at the same dry matter level. The total mixed... |
| Tipo: Journal paper |
Palavras-chave: Dairy cattle. |
| Ano: 2003 |
URL: http://orgprints.org/4680/1/4680.pdf |
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| Langer, Vibeke; Dalgaard, Tommy; Mogensen, Lisbeth; Heidmann, Tove; Elmegaard, Niels; Odderskær, Peter; Hasler, Berit. |
| I det seneste tiår har økologisk landbrug fået en stærkt øget udbredelse. Hvor der i begyndelsen af 1990'erne kun var få tusinde ha, som blev drevet økologisk, er der i 2001 over 170.000 ha, svarende til ca. 6,5 procent af det samlede danske landbrugsareal. Den samfundsmæssige interesse i økologisk landbrug er i høj grad drevet af de positive virkninger på natur og miljø, som det økologiske landbrug formodes at have. Samtidig har de samfundsøkonomiske effekter ved en øget udbredelse af økologisk landbrug været diskuteret. Bl.a. på denne baggrund blev der i regi af Forskningscenter for Økologisk Jordbrug iværksat et forskningsprojekt om Samfunds- og miljømæssige konsekvenser af forskellige strategier for udvikling og udbredelse af økologiske... |
| Tipo: Report |
Palavras-chave: "Organics" in general. |
| Ano: 2002 |
URL: http://orgprints.org/3038/1/rap_12.pdf |
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| Lehmann, Jesper Overgård; Mogensen, Lisbeth; Kristensen, Troels. |
| The concept of extended lactation is supposed to improve cow health and productivity and at the same time reduce greenhouse emission from high-yielding organic dairy cows in a product perspective. This effect is achieved through fewer calvings per year and hence a production of fewer replacement heifers, which then reduces the annual herd requirement for feed. We believe that the average milk yield per feeding day – days lactating plus days dry – per cow will be unchanged. However, this requires that the average cow will have to produce milk for a longer timeframe, and thus they will become older before being culled. We believe this will be a derived effect of the improved cow health as the majority of disease incidences occur around the time of calving.... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Production systems; Dairy cattle; Air and water emissions. |
| Ano: 2014 |
URL: http://orgprints.org/23572/1/23572_MM.pdf |
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| Mogensen, Lisbeth. |
| Grovfoderets kvalitet er den faktor, der har størst effekt på det økonomiske resultat på økologiske kvægbedrifter, der er selvforsynende med foder og husdyrgødning. Det viser nye scenario-beregninger fra FØJO. Det økonomiske resultat afhænger desuden af, hvilken afgrøde, der dyrkes som tilskudsfoder og mængden af tilskudsfoder, der gives per ko per dag. |
| Tipo: Newspaper or magazine article |
Palavras-chave: Dairy cattle. |
| Ano: 2004 |
URL: http://orgprints.org/4685/1/4685.pdf |
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| Mogensen, Lisbeth; Kristensen, Troels; Jensen, Søren K.. |
| The aim of this new project is to develop a prototype of a decision support model simulating the feed and vitamin supply during a year to different groups of animals (calves, heifers, dry cows, cows in early and late lactation) on a farm self-sufficient with feed. The model takes into account that the content of vitamin depends on choice of crops, utilization method, cutting date, conservation method and duration of storage together with traditional optimizing the feed-ing scheme. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle. |
| Ano: 2006 |
URL: http://orgprints.org/7418/1/FOJO_kongress_2006_paper.pdf |
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| Mogensen, Lisbeth; Kristensen, Troels; Danfær, Allan. |
| In 2005, 100% organically grown feed become a requirement for all organic dairy cows in EU. To create a better understanding of which effect introducing 100% organically grown feed will have on the whole farming system, six production strategies was set up and the effects on productivity, environment effect and economy were analysed. The strategies differ with respect to type of concentrated feed, level of fresh grass-clover in the ration and length of the calving interval. It was found that supplement of cereal, rapeseed/cereals or grass pellets gave very similar productivity and economic result, but supplement of rapeseed cake reduced crop production and economic result. Increased level of grazing has a smaller positive effect on the economic result. On... |
| Tipo: Journal paper |
Palavras-chave: Dairy cattle. |
| Ano: 2007 |
URL: http://orgprints.org/6033/1/6033.doc |
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| Registros recuperados: 36 | |
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