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.
2011
Sammendrag
Vossalam, Lofotlam og Lyngenlam – kortreist lammekjøtt fra utmarksbeite markedsføres som uovertruffent. Men smaker virkelig nisjelammekjøttet best? Norsk institutt for skog og landskap har kartlagt utmarksbeiter landet rundt. Det er store lokale og regionale forskjeller i mengde og sammensetning av gunstige beiteplanter. Lyngen kommune i Troms har utmarksbeiter av høy kvalitet. Utmarka er en svært verdifull ressurs der. Med 12.000 sauer på beite hvert år har den en kroneverdi på over tre millioner kroner, dersom samme fôrmengde skulle produseres som grovfôr på innmark. For hele landet kan det være snakk om én milliard kroner.
Forfattere
Paul AakerøySammendrag
Det er ikke registrert sammendrag
Forfattere
Paul AakerøySammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
To flisstørrelser (2,5 og 5 cm) med og uten innblanding av torv (20 % av flisvolum, fig. 2, 3) ble prøvd som tallemateriale for sau og kjøttfé vinteren 2008/2009. resulterte halmtallen i reinere søyer og mer hvile fordi halmen hadde bedre oppsugingsevne enn den grove flisa. Flisstørrelse og innblanding av torv hadde liten betydning for reinhetsgrad og liggeatferd hos kjøttfé og sau.
Forfattere
Marte Haave Annette Bernhard Finn Konow Jellestad Einar Heegaard Trond Brattelid Anne-Katrine LundebyeSammendrag
Background: Polychlorinated biphenyls (PCBs) are widespread in the environment, human food and breast milk. Seafood is known to contain nutrients beneficial for the normal development and function of the brain, but also contaminants such as PCBs which are neurotoxic. Exposure to non-coplanar PCBs during brain development can disrupt spontaneous behaviour in mice and lead to hyperactive behaviour. Humans are chronically exposed to the highest relative levels of organochlorines in early childhood during brain development, though usually at doses which do not give clinical symptoms of toxicity. This study aimed to elucidate the developmental and behavioural effects of 2,2',4,4',5,5' hexachlorobiphenyl (PCB153) in mice, mimicking human exposure during gestation and lactation. Methods: Environmentally relevant doses of PCB153 were added to the experimental diets. Feed concentrations were approximately 0.5, 6.5, and 1500 μg PCB153/kg feed, representing a realistic and a worst case scenario of frequent consumption of contaminated fish. The study also investigated the effects of maternal nutrition, i.e. a standard rodent diet versus a high inclusion of salmon. Mice pups were examined for physical- and reflex development, sensorimotor function and spontaneous behaviour from five days after birth until weaning. A selection of pups were followed until 16 weeks of age and tested for open field behaviour and the acoustic startle response (ASR) with prepulse inhibition (PPI). Blood thyroid hormones and liver enzymes, blood lipids and PCB153 content in fat were examined at 16 weeks. Statistical analyses modelled the three way interactions of diet, PCB exposure and litter size on behaviour, using generalized linear models (GLM) and linear mixed effect models (LME). The litter was used as a random variable. Non-parametric tests were used for pair wise comparisons of biochemical analyses. Results: Litter size consistently influenced pup development and behaviour. Few lasting PCB153 related changes were observed, but results indicated effects on synchronization of physical development. Perinatal PCB153 exposure appeared to reduce habituation and cause aggression in males, though not statistically significant. Conclusions: Litter size and maternal diet influenced physical development and function more than PCB153 in perinatally exposed mouse pups and supports the developmental importance of maternal care and the social environment.
Forfattere
Marte Haave Annette Bernhard Finn K. Jellestad Einar Heegaard Trond Brattelid Anne-Katrine LundebyeSammendrag
Background: Polychlorinated biphenyls (PCBs) are widespread in the environment, human food and breast milk. Seafood is known to contain nutrients beneficial for the normal development and function of the brain, but also contaminants such as PCBs which are neurotoxic. Exposure to non-coplanar PCBs during brain development can disrupt spontaneous behaviour in mice and lead to hyperactive behaviour. Humans are chronically exposed to the highest relative levels of organochlorines in early childhood during brain development, though usually at doses which do not give clinical symptoms of toxicity. This study aimed to elucidate the developmental and behavioural effects of 2,2’,4,4’,5,5’ hexachlorobiphenyl (PCB153) in mice, mimicking human exposure during gestation and lactation. Methods: Environmentally relevant doses of PCB153 were added to the experimental diets. Feed concentrations were approximately 0.5, 6.5, and 1500 μg PCB153/kg feed, representing a realistic and a worst case scenario of frequent consumption of contaminated fish. The study also investigated the effects of maternal nutrition, i.e. a standard rodent diet versus a high inclusion of salmon. Mice pups were examined for physical- and reflex development, sensorimotor function and spontaneous behaviour from five days after birth until weaning. A selection of pups were followed until 16 weeks of age and tested for open field behaviour and the acoustic startle response (ASR) with prepulse inhibition (PPI). Blood thyroid hormones and liver enzymes, blood lipids and PCB153 content in fat were examined at 16 weeks. Statistical analyses modelled the three way interactions of diet, PCB exposure and litter size on behaviour, using generalized linear models (GLM) and linear mixed effect models (LME). The litter was used as a random variable. Non-parametric tests were used for pair wise comparisons of biochemical analyses. Results: Litter size consistently influenced pup development and behaviour. Few lasting PCB153 related changes were observed, but results indicated effects on synchronization of physical development. Perinatal PCB153 exposure appeared to reduce habituation and cause aggression in males, though not statistically significant. Conclusions: Litter size and maternal diet influenced physical development and function more than PCB153 in perinatally exposed mouse pups and supports the developmental importance of maternal care and the social environment.
Sammendrag
Nutrient losses from agricultural catchments in Norway have been monitored since 1992 as part of the Norwegian Agricultural Environmental Monitoring Programme (JOVA). The catchments are at locations which are chosen to represent typical Norwegian agricultural systems such as the production of cereals, grass/livestock and vegetables. Losses are reported annually.
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Adam ParuchSammendrag
Det er ikke registrert sammendrag