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Research article2009Peer reviewed

Effects of conservation method on fatty acid composition of silage

Arvidsson, K.; Gustavsson, A. -M.; Martinsson, K.

Abstract

This experiment was conducted to investigate effects of willing and additives on the fatty acid (FA) composition of grass silage. The crop used was timothy (Phelum pratense L., cv. Grindstad), and the additives were Proens (TM) (formic acid and propionic acid, 60-66 g/100 g and 25-30 g/100 g, respectively), the bacterial inoculant Silofenn (R) Plus (Pediococcus acidilactici and Lactobacillus plantarum) and water (control). The wilted material reached a dry matter (DM) content of 336 g/kg at the first cut and 350 g/kg at the second cut. Neither wilting nor the additives had any major effect on the FA proportions, with the only differences in the concentrations of C16:0 and C 18:3. Silage treated with bacterial inoculant contained a higher proportion of C16:0 (P<0.05) than silage treated with acid, and a lower (P<0.05) concentration of C 18:3 than silage treated with either of the other two additives. In the silages, there were lower (P<0.05) proportions of C:16:0, C 18:0, C 18:1 and C 18:3, and higher (.P<0.05) proportions of C 16: 1, C 19:2 and other identified FAs, than in the fresh material. A wilting process shorter than 24 h. to it DM content of 330-350 g/kg, did not have my effect on the proportions of FAs in P. pratense L., cv. Grindstad. Since the different additives and wilting strategies tested in this study did not affect the proportions of FAs in silage to a major extent, the results indicate that such it process offers a robust means to avoid losses of FAs that can occur during wilting, while retaining the positive effects of wilting, such its reduced losses of nutrients through effluents. (C) 2008 Elsevier B.V. All rights reserved.

Keywords

Silage; Acid additive; Bacterial inoculant; Wilting; Fatty acid composition

Published in

Animal Feed Science and Technology
2009, Volume: 148, number: 2-4, pages: 241-252 Publisher: Elsevier Masson

      SLU Authors

      • Gustavsson, Anne-Maj

        • Department of Agricultural Research for Northern Sweden, Swedish University of Agricultural Sciences
        • Martinsson, Kjell

          • Department of Agricultural Research for Northern Sweden, Swedish University of Agricultural Sciences

        UKÄ Subject classification

        Animal and Dairy Science
        Veterinary Science

        Publication identifier

        DOI: https://doi.org/10.1016/j.anifeedsci.2008.04.003

        Permanent link to this page (URI)

        https://res.slu.se/id/publ/18202