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.
2012
Sammendrag
The objective was to compare the effects of supplementing lactating dairy cows with synthetic (All-rac), natural (RRR) α-tocopheryl acetate or seaweed with a control on the concentration of α-tocopherol in blood and milk. Twenty four dairy cows in mid lactation, fed an organic feed ration, were randomly allocated to the four treatments in a replicated Latin square design. Plasma and milk α-tocopherol concentrations were higher in RRR and All-rac than in the other treatments and higher in RRR than in All-rac. RRR-α-tocopherol was the predominant steroisomer (> 86%), in both plasma and milk, whereas the remaining part was largely made up by the three synthetic 2R isomers. In cows fed the control, seaweed and RRR, the proportion of RRR-α-tocopherol in plasma and milk constituted more than 97% of the total α-tocopherol. The study demonstrated that dairy cows in mid and late lactation have preferential uptake of RRR-α-tocopherol compared to other stereoisomers.
Forfattere
Birgit Hafeld Borgen Ishita Ahuja Ole Petterq Thangstad Bjørn Ivar Honne Jens Rohloff Atle BonesSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
2011
Forfattere
S Manasi Ingrid Nesheim KJ Joy Suhas Paranjape KV Raju Nagothu Udaya SekharSammendrag
Det er ikke registrert sammendrag
Forfattere
Kristin Lichtenfeld Mekjell MelandSammendrag
Det er ikke registrert sammendrag
Sammendrag
Forskjeller mellom fløte og rømme fra "gammel" og "moderne" rase av melkekyr (II). S 4-6. Stedsegenhet. Meieriposten 2011.
Forfattere
Oskar PuschmannSammendrag
Det er ikke registrert sammendrag
Sammendrag
De siste 30 årene har halvparten av gammelskogen på Varaldskogen blitt snauhogd. Likevel har storfuglen klart seg ganske bra, mens orrfuglen har gått litt ned.
Sammendrag
Low soil temperatures limit nutrient uptake with negative consequences for growth and foliage quality. A better understanding of the temperature sensitivity of root N uptake is required to improve the best management practices for fertilization of conifers. Uptake of 15N in saplings of Abies lasiocarpa (Hook) Nutt and Abies nordmanniana (Steven) Spach was studied at root temperatures of 3 - 15°C in hydroponics. 15N accumulation in shoots increased with temperature, showing accelerated accumulation from 7°C upward. At 3°C, uptake rates were low for both species. Between 7 and 12°C, 15N accumulation in shoots increased by a factor of 5 in A. lasiocarpa and by a factor of 3 in A. nordmanniana. The temperature response of N uptake was similar to root growth responses to temperature documented by previous studies. The results have implications for early season fertilization, where fertilization of both species should be withheld until soil temperatures reach 10 -12°C.