Abstract：
:Antibiotic resistance genes (ARGs) in animal manure are a great threat to human health. This study investigated the effects of lignite addition at three levels (5%, 10%, 15% w/w) on the profiles of ARGs and the bacterial communities during poultry litter composting. Lignite addition effectively promoted the removal of manure-borne ARGs. After 65 days of composting, the relative abundances of ARGs decreased by 8.9% in control (no lignite), and by 15.8%, 27.7% and 41.5% in 5%, 10% and 15% lignite treatments, respectively. Although the total mobile genetic elements were enriched after composting, the enrichment of the intI-1 gene was significantly lower in the 10% and 15% lignite treatments compared with control. Network analysis indicated that Actinobacteria and Firmicutes were potential bacterial hosts for ARGs. Redundancy analysis showed that bacterial community succession played a key role in the shifts of ARGs. Taken together, this study provides evidence that lignite as additives promoted the removal efficacy of ARGs during composting of poultry litter.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Cao Y,Hu HW,Guo HG,Butterly C,Bai M,Zhang YS,Chen D,He JZdoi
10.1016/j.biortech.2020.123841subject
Has Abstractpub_date
2020-11-01 00:00:00pages
123841eissn
0960-8524issn
1873-2976pii
S0960-8524(20)31113-5journal_volume
315pub_type
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