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Pretreatments of Broussonetia papyrifera: in vitro assessment on gas and methane production, fermentation characteristic, and methanogenic archaea profile.

Authors :
Lifeng Dong
Yanhua Gao
Xuelan Jing
Huiping Guo
Hongsen Zhang
Qi Lai
Qiyu Diao
Source :
Animal Bioscience. Sep2022, Vol. 35 Issue 9, p1367-1378. 12p.
Publication Year :
2022

Abstract

Objective: The present study was conducted to examine the gas production, fermentation characteristics, nutrient degradation, and methanogenic community composition of a rumen fluid culture with Broussonetia papyrifera (B. papyrifera) subjected to ensiling or steam explosion (SE) pretreatment. Methods: Fresh B. papyrifera was collected and pretreated by ensiling or SE, which was then fermented with ruminal fluids as ensiled B. papyrifera group, steam-exploded B. papyrifera group, and untreated B. papyrifera group. The gas and methane production, fermentation characteristics, nutrient degradation, and methanogenic community were determined during the fermentation. Results: Cumulative methane production was significantly improved with SE pretreatment compared with ensiled or untreated biomass accompanied with more volatile fatty acids production. After 72 h incubation, SE and ensiling pretreatments decreased the acid detergent fiber contents by 39.4% and 22.9%, and neutral detergent fiber contents by 10.6% and 47.2%, respectively. Changes of methanogenic diversity and abundance of methanogenic archaea corresponded to the variations in fermentation pattern and methane production. Conclusion: Compared with ensiling pretreatment, SE can be a promising technique for the efficient utilization of B. papyrifera, which would contribute to sustainable livestock production systems. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
27650189
Volume :
35
Issue :
9
Database :
Academic Search Index
Journal :
Animal Bioscience
Publication Type :
Academic Journal
Accession number :
158990498
Full Text :
https://doi.org/10.5713/ajas.20.0503