Effects of Feed Composition in Different Growth Stages on Rumen Fermentation and Microbial Diversity of Hanwoo Steers
Ruminants are a major source of greenhouse gas emissions, and information on ruminant fermentation and microorganisms is essential to understand ruminant digestion, which is associated with environmental pollution. The present study investigated rumen fermentation and microbial diversity according t...
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MDPI AG
2022-09-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/12/19/2606 |
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| author | Chae Hwa Ryu Han Tae Bang Seul Lee Byeonghyeon Kim Youl Chang Baek |
| author_facet | Chae Hwa Ryu Han Tae Bang Seul Lee Byeonghyeon Kim Youl Chang Baek |
| author_sort | Chae Hwa Ryu |
| collection | DOAJ |
| description | Ruminants are a major source of greenhouse gas emissions, and information on ruminant fermentation and microorganisms is essential to understand ruminant digestion, which is associated with environmental pollution. The present study investigated rumen fermentation and microbial diversity according to the three different growth stages of four Hanwoo steers: growing (12 months, G), early fattening (18 months, EF), and late fattening (25 months, LF). No significant differences were observed in rumen pH and ammonia nitrogen among growth stages. Total volatile fatty acids were significantly higher and propionate and valerate significantly lower in G than in EF and LF (<i>p</i> < 0.05). Ten bacterial phyla were detected, including Firmicutes (47.5–53.5%) and Bacteroidetes (28.4–31.7%), which accounted for 79.2–82.3% of the total bacteria. Prevotella accounted for the highest proportion (31.6–42.6%) of all bacteria in this study but did not differ significantly among the different growth stages. Metaprevotella abundance was significantly higher in G than in the other treatments (<i>p</i> < 0.05). In addition, Paraprevotella tended to be higher in LF than in the other treatments (<i>p</i> = 0.056). Given the differences in the genera of microorganisms with relatively low abundance, additional experiments are needed to determine the effect on fermentation. |
| first_indexed | 2024-03-09T22:08:31Z |
| format | Article |
| id | doaj.art-78165806c4764604b214d5e6963c53a0 |
| institution | Directory Open Access Journal |
| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-03-09T22:08:31Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
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| series | Animals |
| spelling | doaj.art-78165806c4764604b214d5e6963c53a02023-11-23T19:36:33ZengMDPI AGAnimals2076-26152022-09-011219260610.3390/ani12192606Effects of Feed Composition in Different Growth Stages on Rumen Fermentation and Microbial Diversity of Hanwoo SteersChae Hwa Ryu0Han Tae Bang1Seul Lee2Byeonghyeon Kim3Youl Chang Baek4Animal Nutrition and Physiology Division, National Institute of Animal Science, Rural Development Administration, Wanju 55365, KoreaAnimal Nutrition and Physiology Division, National Institute of Animal Science, Rural Development Administration, Wanju 55365, KoreaAnimal Nutrition and Physiology Division, National Institute of Animal Science, Rural Development Administration, Wanju 55365, KoreaAnimal Nutrition and Physiology Division, National Institute of Animal Science, Rural Development Administration, Wanju 55365, KoreaAnimal Nutrition and Physiology Division, National Institute of Animal Science, Rural Development Administration, Wanju 55365, KoreaRuminants are a major source of greenhouse gas emissions, and information on ruminant fermentation and microorganisms is essential to understand ruminant digestion, which is associated with environmental pollution. The present study investigated rumen fermentation and microbial diversity according to the three different growth stages of four Hanwoo steers: growing (12 months, G), early fattening (18 months, EF), and late fattening (25 months, LF). No significant differences were observed in rumen pH and ammonia nitrogen among growth stages. Total volatile fatty acids were significantly higher and propionate and valerate significantly lower in G than in EF and LF (<i>p</i> < 0.05). Ten bacterial phyla were detected, including Firmicutes (47.5–53.5%) and Bacteroidetes (28.4–31.7%), which accounted for 79.2–82.3% of the total bacteria. Prevotella accounted for the highest proportion (31.6–42.6%) of all bacteria in this study but did not differ significantly among the different growth stages. Metaprevotella abundance was significantly higher in G than in the other treatments (<i>p</i> < 0.05). In addition, Paraprevotella tended to be higher in LF than in the other treatments (<i>p</i> = 0.056). Given the differences in the genera of microorganisms with relatively low abundance, additional experiments are needed to determine the effect on fermentation.https://www.mdpi.com/2076-2615/12/19/2606feed compositiongrowth stagesrumen fermentationmicrobial diversityHanwoo steers |
| spellingShingle | Chae Hwa Ryu Han Tae Bang Seul Lee Byeonghyeon Kim Youl Chang Baek Effects of Feed Composition in Different Growth Stages on Rumen Fermentation and Microbial Diversity of Hanwoo Steers Animals feed composition growth stages rumen fermentation microbial diversity Hanwoo steers |
| title | Effects of Feed Composition in Different Growth Stages on Rumen Fermentation and Microbial Diversity of Hanwoo Steers |
| title_full | Effects of Feed Composition in Different Growth Stages on Rumen Fermentation and Microbial Diversity of Hanwoo Steers |
| title_fullStr | Effects of Feed Composition in Different Growth Stages on Rumen Fermentation and Microbial Diversity of Hanwoo Steers |
| title_full_unstemmed | Effects of Feed Composition in Different Growth Stages on Rumen Fermentation and Microbial Diversity of Hanwoo Steers |
| title_short | Effects of Feed Composition in Different Growth Stages on Rumen Fermentation and Microbial Diversity of Hanwoo Steers |
| title_sort | effects of feed composition in different growth stages on rumen fermentation and microbial diversity of hanwoo steers |
| topic | feed composition growth stages rumen fermentation microbial diversity Hanwoo steers |
| url | https://www.mdpi.com/2076-2615/12/19/2606 |
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