Population diversity of yeasts and lactic acid bacteria in pig feed fermented with whey, wet wheat distillers' grains, or water at different temperatures

Applied and Environmental Microbiology
M OlstorpeVolkmar Passoth

Abstract

The diversity of populations of yeast and lactic acid bacteria (LAB) in pig feeds fermented at 10, 15, or 20 degrees C was characterized by rRNA gene sequencing of isolates. The feeds consisted of a cereal grain mix blended with wet wheat distillers' grains (WWDG feed), whey (W feed), or tap water (WAT feed). Fermentation proceeded for 5 days without disturbance, followed by 14 days of daily simulated feed outtakes, in which 80% of the contents were replaced with fresh feed mixtures. In WWDG feed, Pichia galeiformis became the dominant yeast species, independent of the fermentation temperature and feed change. The LAB population was dominated by Pediococcus pentosaceus at the start of the fermentation period. After 3 days, the Lactobacillus plantarum population started to increase in feeds at all temperatures. The diversity of LAB increased after the addition of fresh feed components. In W feed, Kluyveromyces marxianus dominated, but after the feed change, the population diversity increased. With increasing fermentation temperatures, there was a shift toward Pichia membranifaciens as the dominant species. L. plantarum was the most prevalent LAB in W feed. The WAT feed had a diverse microbial flora, and the yeast population chan...Continue Reading

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Citations

Jun 25, 2010·Microbial Ecology·Klaus GoriLene Jespersen
Sep 19, 2009·Antonie van Leeuwenhoek·Volkmar PassothJohan Schnürer
Aug 31, 2010·Antonie van Leeuwenhoek·Matilda Olstorpe, Volkmar Passoth
Jan 11, 2011·Archives of Animal Nutrition·Joris A M MissottenNoël A Dierick
Oct 25, 2011·Applied and Environmental Microbiology·Matilda OlstorpeVolkmar Passoth
Aug 22, 2009·Biotechnology for Biofuels·Volkmar PassothJohan Schnürer
Jan 1, 2013·Enzyme and Microbial Technology·Volkmar PassothJerry Ståhlberg
Feb 18, 2011·Journal of the Science of Food and Agriculture·Carme Plumed-Ferrer, Atte von Wright
Apr 4, 2015·Journal of Animal Science and Biotechnology·Joris Am MissottenStefaan De Smet
Apr 16, 2020·Journal of Animal Science and Technology·Seungmin WooYushin Ha

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