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An in vitro evaluation of partial energy replacement in a total mixed ration with volatile fatty acids derived from agro-industrial residues
University of Borås, Faculty of Textiles, Engineering and Business. Swedish Centre for Resource Recovery.
Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, Box 7024, Uppsala, Sweden.
University of Borås, Faculty of Textiles, Engineering and Business. (Swedish Centre for Resource Recovery)ORCID iD: 0000-0003-4887-2433
University of Borås, Faculty of Textiles, Engineering and Business.ORCID iD: 0000-0001-6280-4483
2024 (English)In: Systems Microbiology and Biomanufacturing, ISSN 2662-7655Article in journal (Refereed) Epub ahead of print
Abstract [en]

The scientific interest in volatile fatty acids (VFAs) as an energy source and chemical precursor in ruminant diets has been longstanding, as it has significant implications for animal physiology and well-being. The present study explores the substitution of volatile fatty acids (VFAs) derived from agro-food residues via acidogenic fermentation as an alternative energy source in ruminant feed. Utilizing the gas production method, rumen digestibility assays were conducted, wherein the recovered VFA effluent from the acidogenic fermentation of apple pomace and potato protein liquor was substituted for 10%, 20%, and 30% of the total mixed ration (TMR) energy. Various parameters such as gas, VFA yield and composition, VFA peak intervals, changes in pH, and ammonium nitrogen content were investigated. Based on the results obtained, provision of 20% and 30% of the energy with VFAs did not increase methane production or did not cause significant pH alternations. Nevertheless, such supplementation resulted in increased production and accumulation of VFAs in the rumen media. The bioconversion of agro-food side streams into VFAs opens a new path in sustainable nutrient recovery and feed production from low value agro-industrial residues.

Place, publisher, year, edition, pages
2024.
Keywords [en]
Acidogenic fermentation, Gas production method, Ruminant feed, Total mixed ration, Volatile fatty acids
National Category
Bioprocess Technology
Research subject
Resource Recovery
Identifiers
URN: urn:nbn:se:hb:diva-32012DOI: 10.1007/s43393-024-00278-4ISI: 001235458500001Scopus ID: 2-s2.0-85194699199OAI: oai:DiVA.org:hb-32012DiVA, id: diva2:1867103
Funder
Swedish Research Council Formas, 2021-02458Available from: 2024-06-10 Created: 2024-06-10 Last updated: 2024-10-01Bibliographically approved

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Parchami, MiladTaherzadeh, Mohammad JMahboubi, Amir

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CiteExportLink to record
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