Changes in Fatty Acid Levels during In Vitro Ruminal Fluid Incubation with Different Proportions of Maize Distillers Dried Grains (DDGS)

Ewa Pecka-Kiełb (), Joanna Tumanowicz, Andrzej Zachwieja, Dorota Miśta, Robert Kupczyński, Bożena Króliczewska, Jowita Kaszuba, František Zigo and Tomasz Suchocki
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Ewa Pecka-Kiełb: Department of Animal Physiology and Biostructure, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, Norwida 31, 50-375 Wroclaw, Poland
Joanna Tumanowicz: Institute of Animal Husbandry and Breeding, Faculty of Biology and Animal Science, Wroclaw University of Environmental and Life Sciences, ul. Chelmonskiego 38C, 51-631 Wroclaw, Poland
Andrzej Zachwieja: Institute of Animal Husbandry and Breeding, Faculty of Biology and Animal Science, Wroclaw University of Environmental and Life Sciences, ul. Chelmonskiego 38C, 51-631 Wroclaw, Poland
Dorota Miśta: Department of Animal Physiology and Biostructure, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, Norwida 31, 50-375 Wroclaw, Poland
Robert Kupczyński: Department of Environmental Hygiene and Animal Welfare, Faculty of Biology and Animal Science, Wroclaw University of Environmental and Life Sciences, 51-630 Wrocław, Poland
Bożena Króliczewska: Department of Animal Physiology and Biostructure, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, Norwida 31, 50-375 Wroclaw, Poland
Jowita Kaszuba: Institute of Animal Husbandry and Breeding, Faculty of Biology and Animal Science, Wroclaw University of Environmental and Life Sciences, ul. Chelmonskiego 38C, 51-631 Wroclaw, Poland
František Zigo: Department of Animal Nutrition and Husbandry, University of Veterinary Medicine and Pharmacy in Košice, 04181 Košice, Slovakia
Tomasz Suchocki: Biostatistics Group, Department of Genetics, Faculty of Biology and Animal Science, Wroclaw University of Environment al and Life Sciences, Kozuchowska 7, 51-631 Wroclaw, Poland

Agriculture, 2023, vol. 13, issue 4, 1-11

Abstract: This study aimed to analyse changes in the profile of long-chain fatty acids in the ruminal fluid of cows during in vitro fermentation, using different proportions of maize DDGS (distillers dried grains with solubles) as a substrate. The serum bottles were filled with 1 g of concentrate feed (C), which consisted of cereal middlings, postextraction rapeseed meal, and soybean meal. Substrates I, II, and III contained the same ingredients as substrate C, but also included DDGS at increasing proportions, while substrate IV contained only DDGS. Ruminal fluid with a buffer was then added to the bottles and incubated for 4, 8, and 24 h. After incubation, the fatty acid profile was analysed using a gas chromatograph. The use of DDGS as a substrate resulted in a decrease in SFA, and an increase in the proportion of UFA, including oleic acid (C18:1n9c) and linoleic acid (C18:2n6c). The fermentation profile with 15% and 20% DDGS in TMR proved to be the most beneficial. These findings suggest that the byproduct of bioethanol production could potentially improve the fatty acid profile in the ruminal fluid, resulting in higher-quality animal products.

Keywords: cows; maize DDGS; rumen; in vitro microbial processes; fatty acid profile (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
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