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Koens fysiologiske status og indflydelse heraf på produktion og sundhed omkring kælvning afhængig af foderniveau og næringsstofforsyning Organic Eprints
Ingvartsen, Klaus Lønne; Mogensen, Lisbeth; Larsen, Torben.
Selvforsyning er ikke et regelkrav, men i tråd med det økologiske nærhedsprincip, dvs. at arbejde mest muligt i lukkede næringsstofkredsløb og dermed en fodring baseret på udelukkende hjemmeavlede fodermidler dyrket inden for bedriftens eget arealgrundlag. Det nuværende regelsæt har en minimumsgrænse for grovfodertildeling: 60% af tørstof i den daglige ration, dog 50% af tørstof til køer mindre end 3 måneder fra kælvning. I forbindelse med regelsættet er der imidlertid en række spørgsmål vedrørende dyrenes sundhed og produktion. På den baggrund er der gennemført forsøg med det formål at belyse produktion og metabolske parametre for tre typer 100% økologiske rationer baseret på korn, rapsfrø og kløvergræs dyrket på et givent areal pr. ko.
Tipo: Report chapter Palavras-chave: Production systems.
Ano: 2005 URL: http://orgprints.org/4695/1/4695.pdf
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Einfluss von Euterinfektionen auf Enzymaktivitäten in Ziegenmilch in der Frühlaktation Organic Eprints
Aulrich, Karen; Barth, Kerstin; Stuhr, Tanja; Larsen, Torben.
At present the analysis of somatic cell count (SCC) used for the detection of intramammary infections in cows is also recommended for goats, but due to various factors influencing SCC it allows only limited conclusions on the udder health of goats. The aim of the present study was to investigate the influence of infection status on different milk enzyme activities and SCC throughout the early lactation. 60 dairy goats were sampled at weekly intervals over a period of six weeks after kidding and the bacteriological status, milk SCC and the activity of N-acetyl-ß-D-glucosaminidase (NAGase), ß-glucuronidase (ß-glu) and lactate dehydrogenase (LDH) of udder halves were analysed. The infection status had a highly significant effect on SCC, ß-glu and LDH...
Tipo: Conference paper, poster, etc. Palavras-chave: Health and welfare.
Ano: 2013 URL: http://orgprints.org/21449/1/21449_Aulrich.pdf
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Do different cow types respond differently to a reduction of concentrate supplementation in an Alpine low-input dairy system? Organic Eprints
Horn, Marco; Steinwidder, Andreas; Pfister, Rupert; Gasteiner, Johann; Vestergaard, M.; Larsen, Torben; Zollitsch, Werner.
Forage based low-input dairy systems include a certain risk of a temporary undersupply with nutrients and energy. Therefore the aim of the present study was to investigate the productive, reproductive and metabolic response of two different dairy cow types to a reduction of concentrate supplementation in an Alpine low-input milk production system. The cow types compared were conventional Austrian Brown Swiss (BS) and a specific strain of Holstein Friesian (HFL). The latter was primarily selected for lifetime performance and Fitness under low-input conditions and is therefore considered by Farmers as being better suited for low-input production systems. Both genotypes were assigned to one of two concentrate supplementation levels, receiving 618 kg (Con) or...
Tipo: Journal paper Palavras-chave: Production systems.
Ano: 2014 URL: http://orgprints.org/32831/6/Do%20different%20cow%20types%20respond%20differently%20to%20a%20reduction%20of%20concentrate.pdf
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