Effects of tetracycline antibiotics in chicken manure on soil microbes and antibiotic resistance genes (ARGs)

2021 ◽  
Author(s):  
Longshui Xu ◽  
Weizhong Wang ◽  
Weihong Xu
Keyword(s):  
Antibiotic Resistance ◽  
Resistance Genes ◽  
Soil Microbes ◽  
Antibiotic Resistance Genes ◽  
Chicken Manure ◽  
Tetracycline Antibiotics

scholarly journals Soil and crop microbiome under soil amendment with poultry manure compost

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Natalia B. Naumova ◽  
Helen N. Ruchko ◽  
Oleg A. Savenkov ◽  
Valentina I. Pleshakova
Keyword(s):  
Antibiotic Resistance ◽  
Resistance Genes ◽  
Gut Microbiome ◽  
High Throughput Sequencing ◽  
Antibiotic Resistance Genes ◽  
Organic Fertilizers ◽  
Chicken Manure ◽  
Poultry Production ◽  
Poultry Industry ◽  
Manure Compost

The aim of the study. The aim of the study was to review publication about microbiome of chicken manure, chicken manure compost, as well as soil and crop microbiome after compost addition to soil as a fertilizer. Methodology. A search in the bibliographical data bases PubMed and elibrary.ru was performed using the keywords pertaining to the topic of the article. Main results. The results about the chicken manure microbiome, obtained by high throughput sequencing, showed that the chicken gut microbiome is dominated by bacteria of the Firmicutes and Bacteroidetes phyla; some regional chicken populations were found to have Clostridium, Lactobacillus, Eubacterium, Bacteroides, Escherichia coli, Prevotella, Selenomonas, Streptococcus, Megasphaera, Fusobacterium и Bifidobacterium as the main representatives of the gut microbiome. However, chicken manure can contain bacteria with antibiotic resistance genes, as antibiotics are increasingly used in the poultry industry to stimulate production. In general manure composting can be regarded as environmentally safe method for transforming various organic wastes into organic fertilizers. As increasing output of the poultry industry, which inevitably includes manure, increased the interest to its composting, and recent years have seen unprecedented number of research, dealing with various details of manure composting, such as duration, hydrothermal conditions, added bulking materials, microbiological preparations, abundance of the antibiotic resistance genes, and so on. However, the studies of soil and crop microbiome after soil fertilization with chicken manure compost have so far been rather scarce, resulting in ambiguous conclusions, i.e. about positive or no effect of the compost addition. The effect is determined by species, breed, age, rearing and manure composting technology, as well as by crop and its cultivar, agricultural practices and soil specifics. Conclusions. Chicken manure contains taxonomically diverse microbiome that can be changed during composting. Microbiota of chicken manure and its compost with their great microbial species richness can contain bacteria, carrying antibiotic resistance genes. Dispersal of such components of the compost resistome in environment via compost addition to agricultural soils should be regarded as a growing biological hazard, threatening the efficient use of antibiotics for treating bacterial infections in in veterinary and medicine. Therefore increasing poultry production urges for assessing the risks and evaluating the scope of the threat, as well as estimating and establishing permissible limits of pathomicrobiotic load of the poultry litter manure and compost, using up-to-date metagenomic techniques. The greatest concern is about spreading antibiotic resistance genes into the marketable crop components, consumed raw; consequently, alongside with studying microbiota of the compost-receiving agricultural soil as a source of dust, microbiome research should be also focused crop phytobiome where crops are produced under addition of composts, obtained with manure of the antibiotic-treated poultry during industrial production.

scholarly journals Effects of Chinese herbal medicine residues on antibiotic resistance genes and the bacterial community in chicken manure composting

2019 ◽  
Author(s):  
Jinping Wu ◽  
Junjian Li ◽  
Jianwen Chen ◽  
Dale Li ◽  
Hong Zhang ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Microbial Community ◽  
Herbal Medicine ◽  
Bacterial Community ◽  
Resistance Genes ◽  
Removal Rate ◽  
Antibiotic Resistance Genes ◽  
Chicken Manure ◽  
Livestock Manure ◽  
Chinese Herbal

AbstractLivestock manure is an important way that antibiotic resistance genes (ARGs) can enter the environment, and composting is an effective method for removing ARGs from livestock manure. In this study, different volume ratios of Chinese medicinal herbal residues (CMHRs) were added to laboratory-scale chicken manure composting to evaluate their effects on the behavior of ARGs, mobile genetic elements (MGEs), and the bacterial community. At the end of the composting period, the structure of the microbial community changed. Firmicutes decreased and Bacteroidetes increased. The relative abundance of the 21 ARGs and 5 MGEs detected decreased by varying degrees in the different treatments (except for sulI and intI1). The removal rate of the ARGs increased with the increased addition of CMHRs. The correlations between transferase genes (tnpA and tnpA-02) and ARGs were significant (p < 0.05); therefore, transposon plays an important role in the horizontal gene transfer of ARGs in chicken manure. The results imply that CMHRs would be an effective bulking agent for the removal of ARGs from chicken manure composting.

Sign in / Sign up

Export Citation Format

Share Document