Regional variations in epiphytic microbiota influence fermentation quality, microbial communities, and aerobic stability of Napier grass silage
Species of epiphytic microbiota are closely associated with the fermentation performance of natural forage silage. This study aimed to evaluate the dynamic microbial communities, fermentation parameters, and aerobic stability of Napier grass silage from the same variety and growth period but harvest...
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Cambridge University Press
2024-01-01
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| Series: | Animal Nutriomics |
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| Online Access: | https://www.cambridge.org/core/product/identifier/S2977377624000127/type/journal_article |
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| author | Hao Ding Qi Yan Nanji Zhang Qichao Gu Qingfeng Tang Bo Lin Caixia Zou |
| author_facet | Hao Ding Qi Yan Nanji Zhang Qichao Gu Qingfeng Tang Bo Lin Caixia Zou |
| author_sort | Hao Ding |
| collection | DOAJ |
| description | Species of epiphytic microbiota are closely associated with the fermentation performance of natural forage silage. This study aimed to evaluate the dynamic microbial communities, fermentation parameters, and aerobic stability of Napier grass silage from the same variety and growth period but harvested from three different regions (NGP1, NGP2, and NGP3). After 60 days of ensiling, triplicate silos were opened for sampling and testing aerobic stability. The epiphytic microbiota with higher relative abundances in fresh Napier grass (NGP1, NGP2, and NGP3) were Weissella, Enterobacter, and Lactococcus, respectively. After 60 days of ensiling, NGP3 exhibited higher fermentation quality, indicated by higher lactic acid (LA) concentration and lower pH than that of NGP1 and NGP2. The NH3–N content of all treatments was lower than 100 g/kg total nitrogen. Compared with NGP1 and NGP2 silage, NGP3 silage exhibited a sharp rise in pH and LA consumption during air exposure. After 7 days of air exposure, NGP3 had higher ethanol concentrations and pH. Ruminiclostridium_5, Pediococcus, and Lactobacillus predominated in NGP1, NGP2, and NGP3 silages, respectively, whereas Candida and Monascus predominated in air-exposed NGP3 silage. The bacterial co-occurrence networks from fresh samples to ensiling and air exposure became more complex; however, NGP3 had a higher negative correlation with co-occurrence after air exposure. Different regions had significant effects on the fermentation patterns, bacterial communities, and aerobic stability of Napier grass silage. This was mainly due to variable epiphytic microbiota. Higher fermentation quality of Napier grass silage may also result in accelerated spoilage due to air exposure. Candida and Monascus were primarily responsible for the lower dry matter recovery and higher ethanol contents and air exposure spoilage of Napier grass silage. |
| format | Article |
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| institution | Kabale University |
| issn | 2977-3776 2977-3784 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Cambridge University Press |
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| series | Animal Nutriomics |
| spelling | doaj-art-4e64794a14b74cfcb211d708a6e3c6482025-08-20T03:41:15ZengCambridge University PressAnimal Nutriomics2977-37762977-37842024-01-01110.1017/anr.2024.12Regional variations in epiphytic microbiota influence fermentation quality, microbial communities, and aerobic stability of Napier grass silageHao Ding0Qi Yan1Nanji Zhang2Qichao Gu3Qingfeng Tang4Bo Lin5Caixia Zou6https://orcid.org/0000-0003-1836-258XCollege of Animal Science and Technology, Guangxi University, Nanning, China Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning, ChinaCollege of Animal Science and Technology, Guangxi University, Nanning, China Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning, ChinaCollege of Animal Science and Technology, Guangxi University, Nanning, China Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning, ChinaCollege of Animal Science and Technology, Guangxi University, Nanning, China Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning, ChinaCollege of Animal Science and Technology, Guangxi University, Nanning, China Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning, ChinaCollege of Animal Science and Technology, Guangxi University, Nanning, China Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning, ChinaCollege of Animal Science and Technology, Guangxi University, Nanning, China Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning, ChinaSpecies of epiphytic microbiota are closely associated with the fermentation performance of natural forage silage. This study aimed to evaluate the dynamic microbial communities, fermentation parameters, and aerobic stability of Napier grass silage from the same variety and growth period but harvested from three different regions (NGP1, NGP2, and NGP3). After 60 days of ensiling, triplicate silos were opened for sampling and testing aerobic stability. The epiphytic microbiota with higher relative abundances in fresh Napier grass (NGP1, NGP2, and NGP3) were Weissella, Enterobacter, and Lactococcus, respectively. After 60 days of ensiling, NGP3 exhibited higher fermentation quality, indicated by higher lactic acid (LA) concentration and lower pH than that of NGP1 and NGP2. The NH3–N content of all treatments was lower than 100 g/kg total nitrogen. Compared with NGP1 and NGP2 silage, NGP3 silage exhibited a sharp rise in pH and LA consumption during air exposure. After 7 days of air exposure, NGP3 had higher ethanol concentrations and pH. Ruminiclostridium_5, Pediococcus, and Lactobacillus predominated in NGP1, NGP2, and NGP3 silages, respectively, whereas Candida and Monascus predominated in air-exposed NGP3 silage. The bacterial co-occurrence networks from fresh samples to ensiling and air exposure became more complex; however, NGP3 had a higher negative correlation with co-occurrence after air exposure. Different regions had significant effects on the fermentation patterns, bacterial communities, and aerobic stability of Napier grass silage. This was mainly due to variable epiphytic microbiota. Higher fermentation quality of Napier grass silage may also result in accelerated spoilage due to air exposure. Candida and Monascus were primarily responsible for the lower dry matter recovery and higher ethanol contents and air exposure spoilage of Napier grass silage.https://www.cambridge.org/core/product/identifier/S2977377624000127/type/journal_articleNapier grassfermentation qualitysilagemicrobial community |
| spellingShingle | Hao Ding Qi Yan Nanji Zhang Qichao Gu Qingfeng Tang Bo Lin Caixia Zou Regional variations in epiphytic microbiota influence fermentation quality, microbial communities, and aerobic stability of Napier grass silage Animal Nutriomics Napier grass fermentation quality silage microbial community |
| title | Regional variations in epiphytic microbiota influence fermentation quality, microbial communities, and aerobic stability of Napier grass silage |
| title_full | Regional variations in epiphytic microbiota influence fermentation quality, microbial communities, and aerobic stability of Napier grass silage |
| title_fullStr | Regional variations in epiphytic microbiota influence fermentation quality, microbial communities, and aerobic stability of Napier grass silage |
| title_full_unstemmed | Regional variations in epiphytic microbiota influence fermentation quality, microbial communities, and aerobic stability of Napier grass silage |
| title_short | Regional variations in epiphytic microbiota influence fermentation quality, microbial communities, and aerobic stability of Napier grass silage |
| title_sort | regional variations in epiphytic microbiota influence fermentation quality microbial communities and aerobic stability of napier grass silage |
| topic | Napier grass fermentation quality silage microbial community |
| url | https://www.cambridge.org/core/product/identifier/S2977377624000127/type/journal_article |
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