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Quality of organic feedstuffs grown in Trenthorst (Germany) – evaluated by Near Infrared Reflectance Spectroscopy

Aulrich, Karen and Böhm, Herwart (2008) Quality of organic feedstuffs grown in Trenthorst (Germany) – evaluated by Near Infrared Reflectance Spectroscopy. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

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Summary

In the present study we address the development of a rapid technique –NIRS– for the evaluation of organically produced feedstuffs in Trenthorst (Germany). The exclusive use of organically produced animal feedstuffs is fixed in the EU-VO 2092/91 for the year 2011. The differences of the contents of crude nutrients between the data of conventionally and organically analysed feedstuffs, as well as the possible differences of the contents from year to year, point out that a satisfying calculation of feed rations needs an exact knowledge of the chemical constituents of the feed components used. Therefore, well-defined material from field trials of the experimental station of the Institute of Organic Farming in Trenthorst of the years 2002-2005 was used for the determination of the contents of crude nutrients and energy in different grain legumes and cereals. All samples were analysed by classical chemical methods and also scanned by NIRS. Predictions of crude protein, crude ash, ether extract, starch, sugar and energy contents for pigs and dairy cattle showed satisfactory accuracy. The correlation coefficients for crude protein, ether extract and starch were 0.98, respectively. Standard error of prediction was below 0.1 MJ ME (pig) kg-1 DM and below 0.08 MJ NEL kg-1 DM. The prediction accuracy for crude fiber, fiber fractions and AMEN was poor. The prediction accuracy should be improved during further growing seasons.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:feed quality, NIRS, chemical constituents, energy
Subjects: Animal husbandry > Feeding and growth
Research affiliation: Germany > Federal Research Institute for Rural Areas, Forestry and Fisheries - VTI > Institute of Organic Farming - OEL
International Conferences > 2008: IFOAM OWC: Research Track / ISOFAR > 4 QUALITY OF ORGANIC PRODUCTS
Deposited By: Aulrich, Dr. Karen
ID Code:12211
Deposited On:22 Sep 2008
Last Modified:12 Apr 2010 07:36
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:This paper is published in the conference proceedings:
Neuhoff, Daniel; Halberg, Niels; Alfldi, Thomas; Lockeretz, William; Thommen, Andreas; Rasmussen, Ilse A.; Hermansen, John; Vaarst, Mette; Lck, Lorna; Carporali, Fabio; Jensen, Henning Hgh; Migliorini, Paola and Willer, Helga, Eds. (2008) .Cultivating the Future Based on Science. Proceedings of the Second Scientific Conference of the International Society of Organic Agriculture Research (ISOFAR), held at the 16th IFOAM Organic World Congress in Cooperation with the International Federation of Organic Agriculture Movements (IFOAM) and the Consorzio ModenaBio, 18 . 20 June 2008 in Modena, Italy.. International Society of Organic Agriculture Research (ISOFAR), c/o IOL, DE-Bonn, Research Institute of Organic Agriculture FiBL, CH-Frick. http://orgprints.org/13672 and http://orgprints.org/13674

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