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Open AccessArticle

Effects of Wormwood (Artemisia montana) Essential Oils on Digestibility, Fermentation Indices, and Microbial Diversity in the Rumen

1
Division of Applied Life Science (BK21Four, Institute of Agriculture and Life Science), Gyeongsang National University, Jinju 52828, Korea
2
Department of Animal Sciences, IFAS, University of Florida, Gainesville, FL 32611, USA
3
Dairy Science Division, National Institute of Animal Science, Cheonan 31000, Korea
4
Faculty of Animal Science, Universitas Gadjah Mada, Yogyakarta 55218, Indonesia
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Microorganisms 2020, 8(10), 1605; https://doi.org/10.3390/microorganisms8101605
Received: 18 September 2020 / Revised: 16 October 2020 / Accepted: 16 October 2020 / Published: 18 October 2020
(This article belongs to the Section Gut Microbiota)
This study investigated the effects of essential oil (EO) from three Korean wormwood (Artemisia Montana) plants on in vitro ruminal digestibility, fermentation, and microbial diversity. Dried (0.5 g) soybean meal (SBM) or bermudagrass hay (BGH) were incubated in buffered rumen fluid (40 mL) for 72 h with or without EO (5 mg/kg) from Ganghwa (GA), Injin (IN), or San (SA) wormwood (Experiment 1). Both SA and IN improved (p < 0.05) dry matter digestibility (DMD) of BGH, while GA reduced (p < 0.05) total short-chain fatty acid of BGH and SBM. Besides, SA increased (p < 0.05) numbers of Ruminococcus albus and Streptococcus bovis in SBM. Experiment 2 examined different doses (0, 0.1, 1, and 10 mg/kg) of SA, the most promising EO from Experiment 1. Applying SA at 10 mg/kg gave the highest DMD (L; p < 0.01) and neutral detergent fiber (Q; p < 0.05) digestibility for BGH. Applying SA at 1 mg/kg gave the highest R. albus population (Q; p < 0.05) in SBM. Therefore, SA was better than GA and IN at improving rumen fermentation, and the 0.1 to 1 and 10 mg/kg doses improved ruminal fermentation and in vitro digestibility of SBM and BGH, respectively. View Full-Text
Keywords: essential oil; in vitro rumen fermentation; rumen microbe; wormwood essential oil; in vitro rumen fermentation; rumen microbe; wormwood
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Lee, S.S.; Kim, D.H.; Paradhipta, D.H.V.; Lee, H.J.; Yoon, H.; Joo, Y.H.; Adesogan, A.T.; Kim, S.C. Effects of Wormwood (Artemisia montana) Essential Oils on Digestibility, Fermentation Indices, and Microbial Diversity in the Rumen. Microorganisms 2020, 8, 1605.

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