How to use NorFor feed values when analysing and reporting experimental results
| Autor: | Martin Riis Weisbjerg, Martin Øvli Kristensen, Nielsen, N. I., Troels, Marianne Johansen, Peter Lund, Mogens Larsen |
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| Přispěvatelé: | Udén, Peter, Eriksson, Torsten, Spörndly, Rolf, Rustas, Bengt-Ove, Karlsson, Johanna |
| Zdroj: | Aarhus University Weisbjerg, M R, Kristensen, M Ø, Nielsen, N I, Kristensen, T, Johansen, M, Lund, P & Larsen, M 2019, How to use NorFor feed values when analysing and reporting experimental results . in P Udén, T Eriksson, R Spörndly, B-O Rustas & J Karlsson (eds), Proceedings of the 10th Nordic Feed Science Conference . vol. 302, Swedish University of Agricultural Sciences, Rapport, no. 302, pp. 104-108, Nordic Feed Science Conference, Uppsala, Sweden, 11/06/2019 . < https://www.slu.se/globalassets/ew/org/inst/huv/nfsc/nfsc2019/nfsc-proceedings-2019-06-05-torsten-eriksson.pdf > |
| Popis: | Calculated energy intake is by tradition typically reported when publishing results from production trials with cattle, which also allows assessment of energy efficiency. Calculation of energy intake is relatively simple and straightforward when classical additive energy systems are used; however, the calculation is certainly not trivial with recent non-additive systems as e.g. NorFor (Volden, 2011) and INRA (2018). Energy intakes and efficiencies based on non-additive systems should better reflect what animals truly experience. However, a number of problems arise when using non-additive systems on observed and individual data. Therefore, in a non-additive system it is important to consider and decide which ‘level’ to use for feed value calculations when reportingexperimental production results. The aim of this paper is to give some examples of problems and dilemmas, and to open for a discussion on how to calculate and present non-additive feed values from NorFor. |
| Databáze: | OpenAIRE |
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