Accumulation of antibiotics and heavy metals in meat duck deep litter and their role in persistence of antibiotic-resistant Escherichia coli in different flocks on one duck farm
文献类型: 外文期刊
作者:
Lin, Y.
2
;
Zhao, W.
2
;
Shi, Z. D.
2
;
Gu, H. R.
2
;
Zhang, X. T.
1
;
Ji, X.
1
;
Zou, X. T.
1
;
Gong, J. S.
3
;
Yao, W.
1
;
作者机构: 1.Nanjing Agr Univ, Coll Anim Sci & Technol, Nanjing, Jiangsu, Peoples R China
2.Jiangsu Acad Agr Sci, Inst Livestock Sci, Key Lab Anim Breeding & Reprod, Nanjing, Jiangsu, Peoples R China
3.Chinese Acad Agr Sci, Poultry Inst, Yangzhou, Jiangsu, Peoples R China
关键词: deep litter;antibiotic;resistance;heavy metal;E. coli
期刊名称:POULTRY SCIENCE ( 影响因子:3.352; 五年影响因子:3.679 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: Meat duck deep litter is considered to be an ideal environment for the evolution of bacterial antibiotic resistance if it is under poor management. The aim of this study was to characterize the accumulation of antibiotics and heavy metals in the deep litter and their role in the persistence of antibiotic resistance of Escherichia coli, and evaluate the service life of the deep litter. Samples were collected from initial, middle, and final stages of deep litter within 3 barns (zero, 4, and 8 rounds of meat duck fattening, d 34) and 9 flocks, with known consumption of antibiotics in the controlled trail. The feed and litter levels of consumed antibiotics and heavy metals were measured. E. coli (n = 147) was isolated and typed by Eric-PCR and the phylogenetic grouping technique, while minimal inhibitory concentrations of antibiotics and heavy metals were measured. This study confirmed the continuous accumulation of doxycycline and many heavy metals in the deep litter. The population of resistant certain bacteria to doxycycline (16 mg/L, 100 mg/L) or ofloxacin (8 g/mL, 50 g/mL) increased in the used deep litter (rounds 4 and 8). E. coli isolated from the 3 stages of sampling were highly resistant to ampicillin, tetracycline, florfenicol, and doxycycline. Increased resistance to ceftiofur, enrofloxacin, ofloxacin, and gentamicin were seen in the isolates from the final stage of deep litter. In addition, the percentage of isolates tolerant to zinc, copper, and cadmium and the numbers of Group-B2 isolates all increased in the used deep litter, and the isolates of each stage belonged predominantly to commensal groups. The antibiotic resistance of isolates with identical Eric-PCR patterns had improved from round 4 to 8, and differences still existed in the resistance profiles of isolates with identical Eric-PCR patterns from different barns of the same round. This study concluded that deep litter could be suitable for the evolution of bacterial antibiotic-resistance under conditions of continuous usage or accumulation of antibiotics and heavy metals without proper management.
- 相关文献
作者其他论文 更多>>
-
Quercetin ameliorates lipid deposition in primary hepatocytes of the chicken embryo
作者:Feng, Y.;Zhao, C.;Li, T.;Wang, M.;Zhao, W.;Shen, M.;Serrano, B. R.;Barcenas, A. R.;Zhao, W.;Qu, L.;Shen, M.
关键词:Quercetin; chicken; fatty liver; SREBP-1; AKT; ERK
-
ADVANCES IN THE USE OF STEM CELLS THERAPY IN VETERINARY CLINICAL PRACTICE
作者:Bhutta, Z. A.;Kulyar, M. F. A.;Yao, W.;Kanwal, A.;Yao, W.;Ahmed, R.;Shabbir, S.;Asif, M.;Nawaz, S.;Ali, M.;Shoaib, M.;Rukh, A. S.;Arshadand, H. J.;Hussain, R.
关键词:animal; regenerative medicine; stem cell therapy; stem cells; veterinary
-
Controlled expression of lysis gene E by a mutant of the promoter pL of the thermo-inducible lambda cI857-pL system
作者:Fu, L. X.;Gao, B.;Ji, D. J.;Han, X. G.;Gong, J. S.;Fu, L. X.;Zeng, L. B.
关键词:bacterial ghosts; cI857 repressor; Escherichia coli; lysis gene E; promoter pL; Salmonella enteritidis
-
Prolactin induces lipid synthesis of organ-cultured pigeon crops
作者:Wan, X. P.;Xie, P.;Wan, X. P.;Zou, X. T.;Bu, Z.;Xie, P.;Gong, D. Q.
关键词:pigeon; organ culture; prolactin; lipid synthesis
-
Changes in hormone profiles, growth factors, and mRNA expression of the related receptors in crop tissue, relative organ weight, and serum biochemical parameters in the domestic pigeon (Columba livia) during incubation and chick-rearing periods under artificial farming conditions
作者:Xie, P.;Diao, E. J.;Xie, P.;Diao, E. J.;Xie, P.;Diao, E. J.;Wan, X. P.;Zou, X. T.;Bu, Z.;Gong, D. Q.
关键词:pigeon; crop tissue; hormone; growth factor; serum biochemical parameter
-
Changes in hepatic glucose and lipid metabolism-related parameters in domestic pigeon (Columba livia) during incubation and chick rearing
作者:Wan, X. P.;Zou, X. T.;Xie, P.;Bu, Z.;Xie, P.
关键词:chick rearing; enzyme activity; gene expression; glucose and lipid metabolism; incubation; male and female pigeon livers
-
Characterization and expression patterns of mannose-binding lectin (MMBL) gene in mulberry (Morus multicaulis) and its prokaryotic expression in E. coli
作者:Li, R.;Chen, D.;Dominic, K.;Li, R.;Liu, L.;Zhao, W.;Li, R.;Wang, T.;Wang, Y.;Li, R.;Chen, D.;Dominic, K.;Li, R.;Liu, L.;Zhao, W.
关键词:Mulberry;Mannose-binding lectin;Characterization;Expression analysis;Prokaryotic expression



