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Excretion masses and environmental occurrence of antibiotics in typical swine and dairy cattle farms in China

Authors :
Zhou, Li-Jun
Ying, Guang-Guo
Liu, Shan
Zhang, Rui-Quan
Lai, Hua-Jie
Chen, Zhi-Feng
Pan, Chang-Gui
Source :
Science of the Total Environment. Feb2013, Vol. 444, p183-195. 13p.
Publication Year :
2013

Abstract

Abstract: This paper evaluated the excretion masses and environmental occurrence of 11 classes of 50 antibiotics in six typical swine and dairy cattle farms in southern China. Animal feeds, wastewater and solid manure samples as well as environmental samples (soil, stream and well water) were collected in December 2010 from these farms. Twenty eight antibiotics, including tetracyclines, bacitracin, lincomycin, sulfonamides, fluoroquinolones, ceftiofur, trimethoprim, macrolides, and florfenicol, were detected in the feeds, animal wastes and receiving environments. The normalized daily excretion masses per swine and cattle were estimated to be 18.2mg/day/swine and 4.24mg/day/cattle. Chlortetracycline (11.6mg/day/swine), bacitracin (3.81mg/day/swine), lincomycin (1.19mg/day/swine) and tetracycline (1.04mg/day/swine) were the main contributors to the normalized daily excretion masses of antibiotics per swine, while chlortetracycline (3.66mg/day/cattle) contributed 86% of the normalized daily excretion masses of antibiotics per cattle. Based on the survey of feeds and animal wastes from the swine farms and interview with the farmers, antibiotics excreted by swine were mainly originated from the feeds, while antibiotics excreted by dairy cattle were mainly from the injection route. If we assume that the swine and cattle in China excrete the same masses of antibiotics as the selected livestock farms, the total excretion mass by swine and cattle per annum in China could reach 3,080,000kg/year and 164,000kg/year. Various antibiotics such as sulfonamides, tetracyclines, fluroquinolones, macrolides, trimethoprim, lincomycin and florfenicol were detected in well water, stream and field soil, suggesting that livestock farms could be an important pollution source of various antibiotics to the receiving environments. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
00489697
Volume :
444
Database :
Academic Search Index
Journal :
Science of the Total Environment
Publication Type :
Academic Journal
Accession number :
85418794
Full Text :
https://doi.org/10.1016/j.scitotenv.2012.11.087