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| Stuen, Snorre; Grøva, Lise; Granquist, Erik G; Sandstedt, Karin; Olesen, Ingrid; Steinshamn, Håvard. |
| Background: It has been questioned if the old native Norwegian sheep breed, Old Norse Sheep (also called Norwegian Feral Sheep), normally distributed on coastal areas where ticks are abundant, is more protected against tick-borne infections than other Norwegian breeds due to a continuously high selection pressure on pasture. The aim of the present study was to test this hypothesis in an experimental infection study. Methods: Five-months-old lambs of two Norwegian sheep breeds, Norwegian White (NW) sheep and Old Norse (ON) sheep, were experimentally infected with a 16S rRNA genetic variant of Anaplasma phagocytophilum (similar to GenBank accession number M73220). The experiment was repeated for two subsequent years, 2008 and 2009, with the use of 16... |
| Tipo: Journal paper |
Palavras-chave: Sheep and goats; Health and welfare. |
| Ano: 2011 |
URL: http://orgprints.org/19867/1/PAPER_III.pdf |
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| Grøva, Lise; Olesen, Ingrid; Stuen, Snorre; Steinshamn, Håvard. |
| De største utfordringene for velferden på sau i beiteperioden er sjodogg, fluelarver, alveld og rovdyr (Norges Forskningsråd 2005, Norsk sau og geitavlslag 2001). Økte transportavstander og transporttid samt negativ økonomisk utvikling i saueholdet og en dreining mot mer ekstensive driftsformer gir også grunn til bekymring for velferden til sauen i norsk sauehold. I økologisk landbruk er et høyt nivå på dyrevelferd og god dyrehelse eksplisitte mål (Debio 2003). Muligheten til å utøve naturlig atferd er et viktig prinsipp, og beitedrift er derfor et viktig aspekt i økologisk landbruk. Utfordringene i både økologisk og konvensjonelt landbruk er ofte sammenfallende, men i økologisk landbruk legger en spesielt stor vekt på årsaksorientert problemløsing og... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Sheep and goats; Animal husbandry; Health and welfare; Breeding and genetics. |
| Ano: 2007 |
URL: http://orgprints.org/13011/1/Husdyrfors%C3%B8ksm%C3%B8tet_2007_Lise_Gr%C3%B8va_et_al_Fl%C3%A5tt_og_sau.pdf |
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| Grøva, Lise; Olesen, Ingrid; Steinshamn, Håvard; Stuen , Snorre. |
| Background: A major challenge in sheep farming during the grazing season along the coast of south-western Norway is tick-borne fever (TBF) caused by the bacteria Anaplasma phagocytophilum that is transmitted by the tick Ixodes ricinus. Methods: A study was carried out in 2007 and 2008 to examine the prevalence of A. phagocytophilum infection and effect on weaning weight in lambs. The study included 1208 lambs from farms in Sunndal Ram Circle in Møre and Romsdal County in Mid-Norway, where ticks are frequently observed. All lambs were blood sampled and serum was analyzed by an indirect fluorescent antibody assay (IFA) to determine an antibody status (positive or negative) to A. phagocytophilum infection. Weight and weight gain and possible effect of... |
| Tipo: Journal paper |
Palavras-chave: Animal husbandry; Sheep and goats; Health and welfare. |
| Ano: 2011 |
URL: http://orgprints.org/19866/1/PAPER_I.pdf |
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