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Abstract

The objective of this study was to estimate heritabilities and genetic correlations for pathogen-specific clinical mastitis (CM) in Norwegian Red cows. In Norway, breeding values for mastitis are predicted based on records of veterinary treatments of clinical mastitis. Bacteriological milk sample...

Author(s)
Haugaard, K.; Heringstad, B.; Whist, A. C.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2012, 95, 3, pp 1545-1551
AbstractFull Text

Background: The objectives of this study were to investigate whether there were differences between Norwegian Red cows in conventional and organic farming with respect to reproductive performance, udder health, and antibiotic resistance in udder pathogens. Methods: Twenty-five conventional and 24...

Author(s)
Garmo, R. T.; Waage, S.; Sviland, S.; Henriksen, B. I. F.; Østerǻs, O.; Reksen, O.
Publisher
BioMed Central Ltd, London, UK
Citation
Acta Veterinaria Scandinavica, 2010, 52, 11, pp (8 February 2010)
Abstract

Mastitis, which is defined as an inflammation of the mammary gland, is the most prevalent and costly disease in milk production. Improvement of disease management is important for the profitability in dairy industry, but in addition there are animal welfare issues as well as consumer interests....

Author(s)
Opsal, M. A.
Publisher
Norwegian University of Life Sciences, Department of Animal and Aquacultural Sciences, Oslo, Norway
Citation
The challenges of genetic complexity: a study of toll-like receptors in bovine mastitis, 2008, pp 40 pp.
AbstractFull Text

Author(s)
Østerǻs, O.
Publisher
World Association for Buiatrics, Paris, France
Citation
24th World Buiatrics Congress, Nice, France, 15-19 October, 2006, 2006, pp 203-215
Abstract

In quarter milk samples from 2,492 randomly sampled cows that were selected without regard to their current or previous udder health status, the relationships between the following outcome variables were studied: treatment of clinical mastitis; the joint event of either treatment or culling for...

Author(s)
Reksen, O.; Sølverød, L.; Branscum, A. J.; Østerǻs, O.
Publisher
American Dairy Science Association, Savoy, USA
Citation
Journal of Dairy Science, 2006, 89, 8, pp 2928-2937
Abstract

This work describes a novel plasmid pSP187 (5550 bp) carrying the small multidrug resistance determinant smr encoding resistance to quaternary ammonium compounds (QACs). pSP187 was identified in a Staphylococcus pasteuri isolate recovered from bulk milk in a dairy cattle herd in Norway. Sequence...

Author(s)
Bjorland, J.; Bratlie, M. S.; Steinum, T.
Publisher
Elsevier, New York, USA
Citation
Plasmid, 2007, 57, 2, pp 145-155
Abstract

A nationwide random computerized assignment survey that included 3,538 sets of 4 quarter milk samples from 2,834 dairy cows was conducted during 2000. Every fifth cow from every 50th herd was randomly selected for sampling and culture during each quarter of the year. Milk culture results of...

Author(s)
Østerǻs, O.; Sølverød, L.; Reksen, O.
Publisher
American Dairy Science Association, Savoy, USA
Citation
Journal of Dairy Science, 2006, 89, 3, pp 1010-1023
Abstract

The objective of this study was to see if introduction of a 2-yr combined selective dry-cow therapy and teat-dipping trial would reduce clinical mastitis (CM) events in 164 Norwegian dairy herds. Three different penicillin or penicillin/dihydrostreptomycin-based dry-cow treatments, and 3 different...

Author(s)
Whist, A. C.; Østerǻs, O.; Sølverød, L.
Publisher
American Dairy Science Association, Savoy, USA
Citation
Journal of Dairy Science, 2006, 89, 12, pp 4649-4659
Abstract

Heifers that were treated for clinical mastitis prior to parturition or within 14 d postpartum were reexamined ∼1 month after treatment. Clinical examination of the heifers and microbiological examination of quarter milk samples were carried out on both occasions. Of the 1000 heifers included in...

Author(s)
Waage, S.; Skei, H. R.; Rise, J.; Rogdo, T.; Sviland, S.; Degaard, S. A.
Publisher
American Dairy Science Association, Savoy, USA
Citation
Journal of Dairy Science, 2000, 83, 1, pp 70-76
Abstract

A randomized controlled field study of selective dry cow therapy with 686 Norwegian cows allocated to 2 control groups (sampling only or placebo) or 2 therapy groups was used to screen for possible factors associated with penicillin-resistant strains of Staphylococcus aureus after the dry period....

Author(s)
Østerǻs, O.; Martin, S. W.; Edge, V. L.
Citation
Journal of Dairy Science, 1999, 82, 5, pp 927-938

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