Adding a complex microbial agent twice to the composting of laying-hen manure promoted doxycycline degradation with a low risk on spreading tetracycline resistance genes

Liang, Jiadi; Jin, Yiman; Wen, Xin; Mi, Jiandui; Wu, Yinbao

doi:10.1016/j.envpol.2020.114202

Cited by 45 publications

(7 citation statements)

References 53 publications

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“…The concentration of doxycycline in pig feces and the weight of feces were measured every day to assess residual doxycycline levels. The determination of doxycycline levels was based on a previously described method [ 13 ] with corresponding adjustments. The specific operation method was listed in Text S1 .…”

Section: Methodsmentioning

confidence: 99%

Doxycycline Attenuates Pig Intestinal Microbial Interactions and Changes Microbial Metabolic Pathways

Liang

Wen

et al. 2023

Animals

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Doxycycline is a therapeutic veterinary antibiotic commonly used in pig breeding. In this study, 27 fattening pigs of 33.5 ± 0.72 kg were divided equally into 3 groups. Doxycycline at 0, 3, and 5 mg/kg body weight was added to the feed in groups CK, L and H. The medication and withdrawal periods were set at 5 and 28 days. The results showed that the doxycycline average concentrations in groups L and H during the medication period were 117.63 ± 13.54 and 202.03 ± 24.91 mg/kg dry matter, respectively. Doxycycline levels were lower than the detection limit after 20 days. Doxycycline did not affect the diversity of the intestinal microbial community structure. The relative abundances of Streptococcus were significantly higher in treatment groups than that in group CK, and Alishewanella, Vagococcus, Cloacibacterium, and Campylobacter abundances were significantly positively correlated with doxycycline concentration. Interestingly, the microbiota cooccurrence network suggested that high doxycycline concentration weakened the interactions among bacteria until day 33. Functional prediction showed that doxycycline significantly altered metabolic pathways related to the cell membrane. The results revealed that the use of doxycycline during pig breeding can affect bacterial abundance during the withdrawal period, and it may affect interactions among bacteria and change the intestinal metabolic pathways.

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Section: Methodsmentioning

confidence: 99%

Doxycycline Attenuates Pig Intestinal Microbial Interactions and Changes Microbial Metabolic Pathways

Liang

Wen

et al. 2023

Animals

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“…90 Generally speaking, microbial agents can be divided into single or compound bacteria, fungi, and actinomycetes. Most studies have conrmed that microbial consortia have better efficient in degrading pollutants than single microbial agents 91,92 A composed microbial agent (holding up to 700 mg L −1 PNP) as the only carbon source performed better in degrading pollution than most efficient pure bacteria available, provided a powerful basis for the development of composed biodegradation. 93 Jia investigated a microbial agent composed of a mixture of cellulose-degrading and cold-adapted bacteria in equal proportions that signicantly increased the composting temperature and compositing efficiency as well as the duration of high temperature during composting.…”

Section: Microbial Consortiamentioning

confidence: 99%

Application of cold-adapted microbial agents in soil contaminate remediation: biodegradation mechanisms, case studies, and safety assessments

Li,

Wen,

Fang

et al. 2024

RSC Adv.

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“…Previous research has demonstrated that the inclusion of biochar can promote compost heating and ventilation, creating a conducive environment for their biological activities [48]. In comparison to the biochar compost groups, the homemade microbial agents also provided more stable microbial diversity during the composting process, suggesting that appropriate bacterial agents are more favorable to the composting process [49].…”

Section: Microbial Community Richness and Diversitymentioning

confidence: 99%

Combined Use of Biochar and Microbial Agents Can Promote Lignocellulosic Degradation Microbial Community Optimization during Composting of Submerged Plants

Wang,

Su,

Ren

et al. 2024

Fermentation

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Aerobic composting is one of the methods for the resource utilization of submerged plant residues. This study investigated the effects of biochar, wetland sediments and microbial agents added individually or combined on the humification process, lignocellulose degradation and microbial communities during Ceratophyllum demersum and Potamogeton wrightii composting. The results showed that the addition of wetland sediment and biochar was found to significantly elevate the composting temperature and humification of compost products. The average content of lignin in wetland sediment and/or biochar treatments was 12.2–13.5%, which was higher than the control group (10.9–11.45%). Compared with the organic matter (19.4%) and total nitrogen concentration (35.3%) of compost treated with complex microbial agent treatments, the homemade microbial agents significantly increased the values by 22.1% and 41.0%, respectively. By comparing the differences in microbial communities among different treatments, the sediments and homemade agents demonstrated greater increases in activity and diversity of lignocellulose degradation-related microbes, especially for Truepera and Actinomarinale. Humus component and temperature were the most critical parameters influencing the changes in the bacterial community. Based on these results, a combination of biochar and homemade agents was a promising additive for an effective composting strategy, and sediment was identified as a potential control of bacterial diversity in wetland plant compost.

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Adding a complex microbial agent twice to the composting of laying-hen manure promoted doxycycline degradation with a low risk on spreading tetracycline resistance genes

Cited by 45 publications

References 53 publications

Doxycycline Attenuates Pig Intestinal Microbial Interactions and Changes Microbial Metabolic Pathways

Doxycycline Attenuates Pig Intestinal Microbial Interactions and Changes Microbial Metabolic Pathways

Application of cold-adapted microbial agents in soil contaminate remediation: biodegradation mechanisms, case studies, and safety assessments

Combined Use of Biochar and Microbial Agents Can Promote Lignocellulosic Degradation Microbial Community Optimization during Composting of Submerged Plants

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