Cited by 55Ruminant Nutrition and Digestive PhysiologyAnimal Nutrition and PhysiologyBiofuel production and bioconversion

Effects of Microbial Enzymes on Starch and Hemicellulose Degradation in Total Mixed Ration Silages

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Ning, Tingting, Wang, Huili, Zheng, Mingli, Niu, Dongze, Zuo, Sasa, Xu, Chuncheng·2016·Asian-Australasian Journal of Animal Sciences

Abstract

Objective: This study investigated the association of enzyme-producing microbes and their enzymes with starch and hemicellulose degradation during fermentation of total mixed ration (TMR) silage.Methods: The TMRs were prepared with soybean curd residue, alfalfa hay (ATMR) or Leymus chinensis hay (LTMR), corn meal, soybean meal, vitamin-mineral supplements, and salt at a ratio of 25:40:30:4:0.5:0.5 on a dry matter basis.Laboratory-scale bag silos were randomly opened after 1, 3, 7, 14, 28, and 56 days of ensiling and subjected to analyses of fermentation quality, carbohydrates loss, microbial amylase and hemicellulase activities, succession of dominant amylolytic or hemicellulolytic microbes, and their microbial and enzymatic properties.Results: Both ATMR and LTMR silages were well preserved, with low pH and high lactic acid concentrations.In addition to the substantial loss of water soluble carbohydrates, loss of starch and hemicellulose was also observed in both TMR silages with prolonged ensiling.The microbial amylase activity remained detectable throughout the ensiling in both TMR silages, whereas the microbial hemicellulase activity progressively decreased until it was inactive at day 14 post-ensiling in both TMR silages.During the early stage of fermentation, the main amylase-producing microbes were Bacillus amyloliquefaciens (B.amyloliquefaciens), B. cereus, B. licheniformis, and B. subtilis in ATMR silage and B. flexus, B. licheniformis, and Paenibacillus xylanexedens (P.xylanexedens) in LTMR silage, whereas Enterococcus faecium was closely associated with starch hydrolysis at the later stage of fermentation in both TMR silages.B. amyloliquefaciens, B. licheniformis, and B. subtilis and B. licheniformis, B. pumilus, and P. xylanexedens were the main source of microbial hemicellulase during the early stage of fermentation in ATMR and LTMR silages, respectively.Conclusion: The microbial amylase contributes to starch hydrolysis during the ensiling process in both TMR silages, whereas the microbial hemicellulase participates in the hemicellulose degradation only at the early stage of ensiling.

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  1. [29]Hussain I Siddique F Mahmood MS Ahmed SI A review of the microbiological aspect of alpha-amylase production Int J Agric Biol 2013 15 1029 34

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Authors
Ning, T., Wang, H., Zheng, M., Niu, D., Zuo, S., & Xu, C.
Affiliations
China Agricultural University (CN)
Corresponding author
Xu, Chuncheng
Venue
Asian-Australasian Journal of Animal Sciences
Published
2016-04-22
Volume
30
Issue
2
Pages
171-180
ISSN
  • 1011-2367 (ISSN-L)
  • 1976-5517
OpenAlex
W2336698346
Cited by
55
References
34
Citations by year
2026: 5 · 2025: 10 · 2024: 9 · 2023: 7 · 2022: 6 · 2021: 7 · 2020: 5 · 2019: 3 · 2018: 2 · 2017: 1
FWCI
4.09
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Asian-Australasian Journal of Animal Sciences (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Natural Science Foundation of China (31172240)
  • International S&T cooperation program of China (2015DFG32360)
  • Chinese Universities Scientific Fund (2013YJ007)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Ruminant Nutrition and Digestive Physiology
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Nutrition and Physiology
  • Physical Sciences › Engineering › Biomedical Engineering › Biofuel production and bioconversion
Keywords
total mixed ration silage, starch degradation, hemicellulose degradation, microbial enzymes, Bacillus amyloliquefaciens, Enterococcus faecium, silage fermentation, soybean curd residue, alfalfa hay, carbohydrate loss

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