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Changes in microbial population and chemical composition of corn stover during field exposure and effects on silage fermentation and in vitro 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...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Asian-Australasian Association of Animal Production Societies (AAAP) and Korean Society of Animal Science and Technology (KSAST)
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6498072/ https://www.ncbi.nlm.nih.gov/pubmed/30477289 http://dx.doi.org/10.5713/ajas.18.0514 |
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author | Sun, Lin Wang, Zhijun Gentu, Ge Jia, Yushan Hou, Meiling Cai, Yimin |
author_facet | Sun, Lin Wang, Zhijun Gentu, Ge Jia, Yushan Hou, Meiling Cai, Yimin |
author_sort | Sun, Lin |
collection | PubMed |
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. |
format | Online Article Text |
id | pubmed-6498072 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Asian-Australasian Association of Animal Production Societies (AAAP) and Korean Society of Animal Science and Technology (KSAST) |
record_format | MEDLINE/PubMed |
spelling | pubmed-64980722019-06-01 Changes in microbial population and chemical composition of corn stover during field exposure and effects on silage fermentation and in vitro digestibility Sun, Lin Wang, Zhijun Gentu, Ge Jia, Yushan Hou, Meiling Cai, Yimin Asian-Australas J Anim Sci Article 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. Asian-Australasian Association of Animal Production Societies (AAAP) and Korean Society of Animal Science and Technology (KSAST) 2019-06 2018-11-27 /pmc/articles/PMC6498072/ /pubmed/30477289 http://dx.doi.org/10.5713/ajas.18.0514 Text en Copyright © 2019 by Asian-Australasian Journal of Animal Sciences This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Article Sun, Lin Wang, Zhijun Gentu, Ge Jia, Yushan Hou, Meiling Cai, Yimin Changes in microbial population and chemical composition of corn stover during field exposure and effects on silage fermentation and in vitro digestibility |
title | Changes in microbial population and chemical composition of corn stover during field exposure and effects on silage fermentation and in vitro digestibility |
title_full | Changes in microbial population and chemical composition of corn stover during field exposure and effects on silage fermentation and in vitro digestibility |
title_fullStr | Changes in microbial population and chemical composition of corn stover during field exposure and effects on silage fermentation and in vitro digestibility |
title_full_unstemmed | Changes in microbial population and chemical composition of corn stover during field exposure and effects on silage fermentation and in vitro digestibility |
title_short | Changes in microbial population and chemical composition of corn stover during field exposure and effects on silage fermentation and in vitro digestibility |
title_sort | changes in microbial population and chemical composition of corn stover during field exposure and effects on silage fermentation and in vitro digestibility |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6498072/ https://www.ncbi.nlm.nih.gov/pubmed/30477289 http://dx.doi.org/10.5713/ajas.18.0514 |
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