NorFor Publications
2026
N. I. Nielsen, M. Åkerlind & J. Karlsson. 2026. NorFor – status and future development. Pages 8-12 in Proceedings of the 13th Nordic Feed Science Conference. Uppsala, Sweden.
J. K. Sommerseth, I. Schei, M. Åkerlind, A. M. H. Kjeldsen, H. Volden & N. I. Nielsen. 2026. Dietary AAT calculated in NorFor and its effects on responses in ECM- and protein yield in dairy cowsPages 42-46 in Proceedings of the 13th Nordic Feed Science Conference. Uppsala, Sweden.
I. Schei, Sommerseth, J.K., Åkerlind, M., Kjeldsen, A.M., M., H. Volden & N.I Nielsen. 2026. The effect of processing protein feedstuffs to increase AAT in dairy cow diets in the NorFor system– a meta study focusing on milk production responsesPages 27-29 in Proceedings of the 13th Nordic Feed Science Conference. Uppsala, Sweden.
J. Karlsson, M. Åkerlind, F. Hahn Lau-Jensen & N. I. Nielsen. 2026. Predicting enteric methane from growing cattle. Pages 81-85 in Proceedings of the 13th Nordic Feed Science Conference. Uppsala, Sweden.
E. M. V. Hvas, M. Larsen, N. I. Nielsen, H. Martinussen & M. R. Weisbjerg. 2026. Update of NorFor values for beets and beet silages. Pages 24-26 in Proceedings of the 13th Nordic Feed Science Conference. Uppsala, Sweden.
M.B. Samarasinghe, L.E. Hernández-Castellano, N.B. Kristensen & M. Larsen. 2026. Arterial blood ionised calcium activity in periparturient Holstein cows fed an alkaline low-energy density or acidifying high-energy density close-up prepartum rations. animal. 20: 101753.
2025
M. Managos, C. Lindahl, S. Agenäs, U. Sonesson & M. Lindberg. 2025. Considering greenhouse gas emissions from feed production in diet formulation for dairy cows as a means of reducing the carbon footprint. animal. 19: 101544.
E.M.V. Hvas, M.D. Hanigan, M.R. Weisbjerg & M. Larsen. 2025. Effects of feeding beets and ensiled beets on rumen volatile fatty acid and ethanol metabolism in dairy cows. Journal of Dairy Science. 108: 9449-9469.
E.M.V. Hvas, M.D. Hanigan, M.R. Weisbjerg, A.L.F. Hellwing & M. Larsen. Effects of feeding beets and ensiled beets on postabsorptive ethanol metabolism and enteric gas emission in dairy cows. Journal of Dairy Science. 108: 9433-9448.
D. M. Atsbeha & A. Kidane. 2025. Feed efficiency and surplus feed intake among Norwegian Red dairy cows. Journal of Dairy Science. 108: 2561-2572.
2024
J. Karlsson, C. Alvarez, M. Åkerlind & N. I. Nielsen. 2024. The effect of the methane inhibitors nitrate and 3-NOP on enteric methane in dairy cow. Pages 32-34 in Proceedings of the 12th Nordic Feed Science Conference. Uppsala, Sweden.
L.E. Sembach, L.R.H. Nielsen, M.M. Jensen, R. Dhakal & H.H. Hansen. 2024. Effect on calf growth of accounting for early in vitro degradation kinetics when composing a calf starter ration. Livestock Science. 2083: 105459.
2023
D.W. Olijhoek, M. Lamminen, A.L.F. Hellwing, M. Larsen, M.R. Weisbjerg, K.E. Bach Knudsen & P. Lund. 2023. Effect of substituting maize silage with fresh or ensiled sugar beets on nutrient digestibility, rumen fermentation and microbial synthesis, and enteric methane emission in dairy cows. Animal Feed Science and Technology. 303: 115715. .
Farhad Parnian-Khajehdizaj, S.J. Noel, M. Johansen, M.R. Weisbjerg, A.L.F. Hellwing, O. Højberg, M.B. Hall & P. Lund. 2023. Methane emission, nutrient digestibility, and rumen microbiota in Holstein heifers fed 14 different grass or clover silages as the sole feed. Journal of Dairy Science. 106: 4072-4091.
Å. T. Randby, I. Dønnem, E. Prestløkken, A. D. Martin, A. Steen & M. Eknæs. 2023. Effect of chop length of grass silage harvested at two maturity stages, and of concentrate protein level, on feed intake and milk production in dairy cows. Grass and Forage Science. 79: 211-227.
C.F. Børsting, D.W. Olijhoek, A.L.F. Hellwing, K.M. Moyes, S. Østergaard, M.R. Weisbjerg, P. Lund, M. Larsen, L. Mogensen, B.M. Raun, B.A. Røjen & N.B. Kristensen. 2023. Replacing silage with large amounts of concentrate and straw affects milk production, economics and climate differently in Holstein and Jersey Cows. Livestock Science. 275: 105293
2022
N. I. Nielsen, M. Ø. Kristensen, A. M. H. Kjeldsen & F. H. L. Jensen. 2022. Reducing carbon footprint of milk using rapeseed and NorFor in Danish dairy herds. Pages 83-85 in Proceedings of the 11th Nordic Feed Science Conference. Uppsala, Sweden.
C. Álvarez, M. Åkerlind, H. Martinussen, E. Brodshaug, D. Clausen & N. I. Nielsen. 2022. Screening of energy content of compound feeds using the new energy evaluation model in NorFor. Pages 135-137 in Proceedings of the 11th Nordic Feed Science Conference. Uppsala, Sweden.
D.W. Olijhoek, A.L.F. Hellwing, S.J. Noel, P. Lund, M. Larsen, M.R. Weisbjerg & C.F. Børsting. 2022. Feeding up to 91% concentrate to Holstein and Jersey dairy cows: Effects on enteric methane emission, rumen fermentation and bacterial community, digestibility, production, and feeding behavior. Journal of Dairy Science. 105: 9523-9541.
S. Binggeli, H. Lapierre, S. Lemosquet, D. R. Ouelletand D. Pellerin. 2022. Comparison of feed evaluation models on predictions of milk protein yield on Quebec commercial dairy farms. Journal of Diary Sience. 105.
C. Álvarez, N.I. Nielsen, M.R. Weisbjerg, H. Volden, M. Eknæs and E. Prestløkken. 2022. High-digestible silages allow low concentrate supply without affecting milk production or methane emissions. Journal of Dairy Science. 105: 3633-3647.
J. Karlsson, R. Danielsson, M. Åkerlind, K. Holtenius. 2022. Full-lactation performance of multiparous
dairy cows with differing residual feed intake. PLoS ONE 17:e0273420
2020
C. Álvarez, N. I. Nielsen, M. R. Weisbjerg, H. Volden, and E. Prestløkken. 2020. A static model for estimating energy content of compound feeds in a dynamic feed evaluation system. Journal of Dairy Science. 104: 9362-9375.
2019
Álvarez, C., N.I. Nielsen and M.R. Weisbjerg. 2019. A method for measuring energy content in compound feeds in the NorFor system. Pages 99-103 in Proceedings of the 10th Nordic Feed Science Conference. Uppsala, Sweden.
Weisbjerg M.R., M.Ø. Kristensen, N.I. Nielsen, T. Kristensen, M. Johansen, P. Lund and M. Larsen. How to use NorFor feed values when analysing and reporting experimental results? Pages 104-108 in Proceedings of the 10th Nordic Feed Science Conference. Uppsala, Sweden.
Åkerlind M. and N.I. Nielsen. Evaluation of NorFor’s prediction of neutral detergent fiber digestibility in dairy cows. 2019. Pages 109-116 in Proceedings of the 10th Nordic Feed Science Conference. Uppsala, Sweden.
Nielsen, N. Estimating and optimizing carbon footprint of milk in NorFor. 2019. Pages 57-61 in Proceedings of the 10th Nordic Feed Science Conference. Uppsala, Sweden.
2017
Nielsen N.I. and N.B. Kristensen. 2017. Ringtest shows that in vitro organic matter digestibility in silages varies 3-4%-units between laboratories doing NorFor analysis. Pages 93-96 in Proceedings of the 8th Nordic Feed Science Conference. Uppsala, Sweden.
Åkerlind M., N.I. Nielsen, C. Alvarez and P. Nordgren. 2017. The NorFor feed database. Pages 102-108 in Proceedings of the 8th Nordic Feed Science Conference. Uppsala, Sweden.
2016
Appuhamy J., J. France and E. Kebreab. 2016. Models for predicting enteric methane emissions from dairy cows in North America, Europe, and Australia and New Zealand. 2016. Global Change Biology 22: 3039–3056, doi: 10.1111/gcb.13339.
Bertilsson, J. M. Åkerlind and T. Eriksson. 2016. The effects of high-sugar ryegrass/red clover silage diets on intake, production, digestibility, and N utilization in dairy cows, as measured in vivo and predicted by the NorFor model. J. Dairy Sci. 100:7990–8003.
Åkerlind M. and N. I. Nielsen Are the nutrients and energy values for commercial compound feeds in the NorFor feedstuff table correct? ? a NIR screening conducted using different laboratories. Pages 11-16 in Proceedings of the 7th Nordic Feed Science Conference. Uppsala, Sweden.
2015
Bertilsson J., Eriksson T. and M. Åkerlind. What does the cow and NorFor say about sugar in the diet? Pages 95-100 in Proceedings of the 6th Nordic Feed Science Conference. Uppsala, Sweden.
Hauge R., M. Johansen and N. I. Nielsen. Estimation and evaluation of rumen microbial protein synthesis in NorFor and other feed evaluation systems. Pages 116-122 in Proceedings of the 6th Nordic Feed Science Conference. Uppsala, Sweden.
Åkerlind M., B. Johansson, H. Stenberg, K. Zaralis, I. Schei, N.I. Nielsen and E. Nadeau. Predicting intake capacity of growing bulls. Pages 123-129 in Proceedings of the 6th Nordic Feed Science Conference. Uppsala, Sweden.
2014
Jensen, C. Milk and growth responses to energy intake in dairy cattle – in the perspective of the non-additive feed evaluation system – NorFor. PhD Thesis. Aarhus University.
Krizsan S., A. Höjer, A. Huuskonen, M. Hetta and P. Huhtanen Evaluation of the feed intake models in the Nordic feed evaluation system NorFor. Acta Agriculturae Scandinavica, Section A — Animal Science, 64:2, 110-122, DOI: 10.1080/09064702.2014.929168
Rengman S., B. Johansson and M. Murphy Dietary nutrient density and effects on intake and production. Pages 83-87 in Proceedings of the 5th Nordic Feed Science Conference. Uppsala, Sweden.
Schei I., N.I. Nielsen, M. Åkerlind and H. Volden. A meta-analysis of milk production responses to increased supply of AAT. Pages 78-82 in Proceedings of the 5th Nordic Feed Science Conference. Uppsala, Sweden
2013
Nielsen N. I., H. Volden, M. Åkerlind, M. Brask, A. L. F. Hellwing, T. Storlien & J. Bertilsson. 2013. A prediction equation for enteric methane emission from dairy cows for use in NorFor, Acta Agriculturae Scandinavica, Section A - Animal Science, 63:3, 126-130, DOI: 10.1080/09064702.2013.851275
2006
Gustafsson A., H. Volden, M. Mehlqvist, M. Larsen, G.Gudmundsson and O. Aaes*** NorForTM - the new Nordic feed evaluation system for cattle. Pages 122-126 in ICAR 2006. Kuopio, Finland.