Changes in microbial population and chemical composition of corn stover during field exposure and effects on silage fermentation and digestibility
Objective To effectively use corn stover resources as animal feed, the changes in microbial population and chemical composition of corn stover during field exposure, and their silage fermentation and in vitro digestibility were studied. Methods Corn cultivars (Jintian, Jinnuo, and Xianyu) stovers fr...
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Asian-Australasian Association of Animal Production Societies
2019-06-01
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| Series: | Asian-Australasian Journal of Animal Sciences |
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| Online Access: | http://www.ajas.info/upload/pdf/ajas-18-0514.pdf |
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| author | Lin Sun Zhijun Wang Ge Gentu Yushan Jia Meiling Hou Yimin Cai |
| author_facet | Lin Sun Zhijun Wang Ge Gentu Yushan Jia Meiling Hou Yimin Cai |
| author_sort | Lin Sun |
| collection | DOAJ |
| description | Objective To effectively use corn stover resources as animal feed, the changes in microbial population and chemical composition of corn stover during field exposure, and their silage fermentation and in vitro digestibility were studied. Methods Corn cultivars (Jintian, Jinnuo, and Xianyu) stovers from 4 random sections of the field were harvested at the preliminary dough stage of maturity on September 2, 2015. The corn stover exposed in the field for 0, 7, 15, 30, 60, 90, and 180 d, and their silages at 60 d of ensiling were used for the analysis of microbial population, chemical composition, fermentation quality, and in vitro digestibility. Data were analyzed with a completely randomized 3×6 [corn stover cultivar (C)×exposure d (D)] factorial treatment design. Analysis of variance was performed using SAS ver. 9.0 software (SAS Institute Inc., Cary, NC, USA). Results Aerobic bacteria were dominant population in fresh corn stover. After ensiling, the lactic acid bacteria (LAB) became the dominant bacteria, while other microbes decreased or dropped below the detection level. The crude protein (CP) and water-soluble carbohydrate (WSC) for fresh stover were 6.74% to 9.51% and 11.75% to 13.21% on a dry matter basis, respectively. After exposure, the CP and WSC contents decreased greatly. Fresh stover had a relatively low dry matter while high WSC content and LAB counts, producing silage of good quality, but the dry stover did not. Silage fermentation inhibited nutrient loss and improved the fermentation quality and in vitro digestibility. Conclusion The results confirm that fresh corn stover has good ensiling characteristics and that it can produce silage of good quality. |
| first_indexed | 2024-12-21T20:25:08Z |
| format | Article |
| id | doaj.art-3ea29e1e46ef4fbfaf38ef2e6278cc45 |
| institution | Directory Open Access Journal |
| issn | 1011-2367 1976-5517 |
| language | English |
| last_indexed | 2024-12-21T20:25:08Z |
| publishDate | 2019-06-01 |
| publisher | Asian-Australasian Association of Animal Production Societies |
| record_format | Article |
| series | Asian-Australasian Journal of Animal Sciences |
| spelling | doaj.art-3ea29e1e46ef4fbfaf38ef2e6278cc452022-12-21T18:51:24ZengAsian-Australasian Association of Animal Production SocietiesAsian-Australasian Journal of Animal Sciences1011-23671976-55172019-06-0132681582510.5713/ajas.18.051424138Changes in microbial population and chemical composition of corn stover during field exposure and effects on silage fermentation and digestibilityLin Sun0Zhijun Wang1Ge Gentu2Yushan Jia3Meiling Hou4Yimin Cai5 Key Laboratory of Grassland Resources, Ministry of Education, P.R. of China, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot 010019, China Inner Mongolia Institute of Grassland Surveying and Planning, Hohhot, Inner Mongolia 010051, China Key Laboratory of Grassland Resources, Ministry of Education, P.R. of China, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot 010019, China Key Laboratory of Grassland Resources, Ministry of Education, P.R. of China, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot 010019, China College of Agriculture, Inner Mongolia University of Nationalities, Tongliao 028000, China Japan International Research Center for Agricultural Science (JIRCAS), Tsukuba, Ibaraki 305-8686, JapanObjective To effectively use corn stover resources as animal feed, the changes in microbial population and chemical composition of corn stover during field exposure, and their silage fermentation and in vitro digestibility were studied. Methods Corn cultivars (Jintian, Jinnuo, and Xianyu) stovers from 4 random sections of the field were harvested at the preliminary dough stage of maturity on September 2, 2015. The corn stover exposed in the field for 0, 7, 15, 30, 60, 90, and 180 d, and their silages at 60 d of ensiling were used for the analysis of microbial population, chemical composition, fermentation quality, and in vitro digestibility. Data were analyzed with a completely randomized 3×6 [corn stover cultivar (C)×exposure d (D)] factorial treatment design. Analysis of variance was performed using SAS ver. 9.0 software (SAS Institute Inc., Cary, NC, USA). Results Aerobic bacteria were dominant population in fresh corn stover. After ensiling, the lactic acid bacteria (LAB) became the dominant bacteria, while other microbes decreased or dropped below the detection level. The crude protein (CP) and water-soluble carbohydrate (WSC) for fresh stover were 6.74% to 9.51% and 11.75% to 13.21% on a dry matter basis, respectively. After exposure, the CP and WSC contents decreased greatly. Fresh stover had a relatively low dry matter while high WSC content and LAB counts, producing silage of good quality, but the dry stover did not. Silage fermentation inhibited nutrient loss and improved the fermentation quality and in vitro digestibility. Conclusion The results confirm that fresh corn stover has good ensiling characteristics and that it can produce silage of good quality.http://www.ajas.info/upload/pdf/ajas-18-0514.pdfChemical CompositionCorn StoverDigestibilityField ExposureSilage Fermentation |
| spellingShingle | Lin Sun Zhijun Wang Ge Gentu Yushan Jia Meiling Hou Yimin Cai Changes in microbial population and chemical composition of corn stover during field exposure and effects on silage fermentation and digestibility Asian-Australasian Journal of Animal Sciences Chemical Composition Corn Stover Digestibility Field Exposure Silage Fermentation |
| title | Changes in microbial population and chemical composition of corn stover during field exposure and effects on silage fermentation and digestibility |
| title_full | Changes in microbial population and chemical composition of corn stover during field exposure and effects on silage fermentation and digestibility |
| title_fullStr | Changes in microbial population and chemical composition of corn stover during field exposure and effects on silage fermentation and digestibility |
| title_full_unstemmed | Changes in microbial population and chemical composition of corn stover during field exposure and effects on silage fermentation and digestibility |
| title_short | Changes in microbial population and chemical composition of corn stover during field exposure and effects on silage fermentation and digestibility |
| title_sort | changes in microbial population and chemical composition of corn stover during field exposure and effects on silage fermentation and digestibility |
| topic | Chemical Composition Corn Stover Digestibility Field Exposure Silage Fermentation |
| url | http://www.ajas.info/upload/pdf/ajas-18-0514.pdf |
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