Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2009
Forfattere
Randi Therese Garmo Erik Ropstad Øystein Havrevoll Erling Thuen Håvard Steinshamn Andres Waldmann Olav ReksenSammendrag
Relationships among commencement of luteal activity (C-LA), milk yield, and energy balance (EB) were investigated in 3 selection lines of Norwegian Red cows at the Norwegian University of Life Sciences from 1994 through 2001. The cows were selected for low genetic merit for milk yield (LMP), high genetic merit for milk yield (HMP), and a combination of high indices for milk yield and fertility (HI). Breeding values for fertility were based on 56-d nonreturn rate. The material included 268 lactations from 147 cows. Milk samples for progesterone analysis were drawn 3 times weekly from 1994 through 1998, and 2 times weekly from 1999 to 2001. Commencement of luteal activity was defined as the first 2 consecutive measurements of progesterone concentration > 3 ng/mL not earlier than 10 d after calving. Selection line was significantly related to C-LA, so that the least squares mean days from calving to C-LA were 22.5, 30.4, and 27.2 d for LMP, HMP, and HI cows, respectively. The HMP cows produced more milk than the LMP cows. The average milk yield in the sixth week of lactation was 24.0, 27.1, and 25.3 kg for LMP, HMP, and HI cows, respectively. The interval to C-LA decreased for the HMP and HI cows after phenotypic adjustment for EB in the model. Least squares means for the interval to C-LA were 23.2, 29.7, and 25.6 d for the LMP, HMP, and HI cows, respectively, in a model that included parity, selection lines, and EB as covariates. Cumulated EB during the first 4 wk of lactation, which itself differed between selection lines, did not fully account for differences in interval to C-LA between selection lines. Thus, the results of the present investigation indicate that selection for milk yield negatively affects C-LA over and above the effects caused by concurrent changes in EB. The increase in days to C-LA caused by selection for high yields can be reduced if selection for milk yield is combined with fertility in the breeding program.
Sammendrag
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Forfattere
Torbjørn Alm Anders OftenSammendrag
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Forfattere
Frode Flemsæter Gunhild SettenSammendrag
In this paper we discuss relations between kinship, law, and property enactment. A recent revision of The Norwegian Act Relating to Concession in the Acquisition of Real Property is designed to influence the relation between subjects (property owners) and objects (properties) through ceasing the obligation of residency and cultivation on certain properties, which in turn is intended to increase sales prices of the respective properties. Drawing upon empirical research conducted in four Norwegian local authority districts, we argue that responsibility for past, present, and future generations of family or kin is highly important in property enactment. Although relations between subjects and objects are powerful and inform policy actions, relations between social subjects might be just as influential and powerful. When enacting properties, people may live in more complicated worlds than is often assumed. We assert that further research in legal geography and the emerging field of ‘geographies of relatedness’ might profit from seeing kinship and property as coconstituted.
Forfattere
Rune Andreassen Hans Geir Eiken A Kopatz SG Bjervamoen I Wartiainen C Tobiassen Per Knappskog PE Aspholm ME Smith J AspiSammendrag
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Forfattere
Torbjørn Alm Anders OftenSammendrag
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Forfattere
Mari Mette Tollefsrud Jørn Henrik Sønstebø Christian Brochmann Øistein Johnsen Tore Skrøppa GG VendraminSammendrag
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Sammendrag
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Forfattere
Marianne Vileid Uleberg Ievina Sturite Trond Maukon Henriksen Olavi Junttila Marit JørgensenSammendrag
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Forfattere
Daniel Kwaku Addo Asante Igor A. Yakovlev Carl Gunnar Fossdal Gerrit Frantz Timmerhaus Jouni Partanen Øystein JohnsenSammendrag
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