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.
2010
Forfattere
Randi Therese Garmo Steinar Waage Ståle Sviland Britt Henriksen Olav Østerås Olav ReksenSammendrag
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. Twenty-five conventional and 24 organic herds from south-east and middle Norway participated in the study. Herds were matched such that geographical location, herd size, and barn types were similar across the cohorts. All organic herds were certified as organic between 1997 and 2003. All herds were members of the Norwegian Dairy Herd Recording System. The herds were visited once during the study. The relationship between the outcomes and explanatory variables were assessed using mixed linear models. Results: There were less > 2nd parity cows in conventional farming. The conventional cows had higher milk yields and received more concentrates than organic cows. Although after adjustment for milk yield and parity, somatic cell count was lower in organic cows than conventional cows. There was a higher proportion of quarters that were dried off at the herd visit in organic herds. No differences in the interval to first AI, interval to last AI or calving interval was revealed between organic and conventional cows. There was no difference between conventional and organic cows in quarter samples positive for mastitis bacteria from the herd visit. Milk yield and parity were associated with the likelihood of at least one quarter positive for mastitis bacteria. There was few S. aureus isolates resistance to penicillin in both management systems. Penicillin resistance against Coagulase negative staphylococci isolated from subclinically infected quarters was 48.5% in conventional herds and 46.5% in organic herds. Conclusion: There were no large differences between reproductive performance and udder health between conventional and organic farming for Norwegian Red cows.
Forfattere
Randi Therese Garmo Steinar Waage Ståle Sviland Britt Henriksen Olav Østerås Olav ReksenSammendrag
Det er ikke registrert sammendrag
Forfattere
H.-S. Hekmisaari M Salemaa O Kiikilä Christian Uhlig T NieminenSammendrag
Det er ikke registrert sammendrag
Forfattere
Andreas TreuSammendrag
Furfurylation of wood samples can lead to different outcome (different chemistry) and product properties depending on parameters such as pH-value, catalyst, amount of water, time and temperature. Changes in the furfurylation process can even lead to a deterioration of product performance, such as lower durability in comparison to other furfurylated products. How is it possible to detect these changes in chemistry of a furfurylated wood product? To answer this question confocal laser scanning microscopy was used. The expectation was to detect different emissions of the auto fluorescent furfuryl alcohol if differences in chemistry exist. Additionally to the differences in emitted wavelength, the area in the wood structure of different emissions was under investigation. It was the aim to detect whether different product performance of a furfurylated product or different furfurylation processes could be related to changes in chemistry and this was expected to be visualized by CLSM.
Forfattere
Ola Hanserud Anne BøenSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Kjell WærnhusSammendrag
Det er ikke registrert sammendrag
Forfattere
Ann NorderhaugSammendrag
Restaurering av kulturlandskap.
Forfattere
Ann NorderhaugSammendrag
Norderhaug, A. 2010. Restaurering av kulturlandskap. S. 103-106 i: Hagen, D. & Skrindo, A.B. (red.). Restaurering av natur i Norge - et innblikk i fagfeltet, fagmiljøer og pågående aktivitet. NINA Temahefte 42
Forfattere
Børge Holen Birgitte LyrånSammendrag
Mattilsynet har overvåket nivået av plantevernmiddelrester i mat på det norske markedet siden 1977. De siste årene er det blitt analysert rundt 1500 stikkprøver fra norskproduserte og importerte varepartier, hvorav 40 prosent er prøver av norske varer. Antall stoffer det søkes etter har økt betydelig de siste årene, og i 2010 vil hver prøve av frukt og grønnsaker bli analysert for 265 forskjellige stoffer. Bioforsk Plantehelse er ansvarlig for analysene.