Occurrence and dissemination of antibiotic resistance genes in the Yellow River basin: focused on family farms
文献类型: 外文期刊
作者: Zheng, Shimei;Han, Bingjun;Wang, Yandong;Ding, Yongzhen;Zhao, Ran;Yang, Fengxia
作者机构:
关键词: Antibiotic resistance genes;Family livestock farms;Animal manure;Natural composting;Cropland soils;Yellow River
期刊名称: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN: 0944-1344
年卷期: 2024 年
页码:
收录情况: SCIE(2024版) ; ; EI(2024版)
摘要: As an emerging contaminant, antibiotic resistance genes (ARGs) have attracted growing attention, owing to their widespread dissemination and potential risk in the farming environment. However, ARG pollution from family livestock farms in the Yellow River basin, one of the main irrigation water sources in the North China Plain, remains unclear. Herein, we targeted 21 typical family farms to assess the occurrence patterns of ARGs in livestock waste and its influence on ARGs in receiving environment by real-time quantitative PCR (qPCR). Results showed that common ARGs were highly prevalent in family livestock waste, and tet-ARGs and sul-ARGs were the most abundant in these family farms. Most ARG levels in fresh feces of different animals varied, as the trend of chicken farms (broilers > laying hens) > swine farms (piglets > fattening pigs > boars and sows) > cattle farms (dairy cattle > beef cattle). The effect of natural composting on removing ARGs for chicken manure was better than that for cattle manure, while lagoon storage was not effective in removing ARGs from family livestock wastewater. More troublesomely, considerable amounts of ARGs were discharged with manure application, further leading to the ARG increase in farmland soil (up to 58-119 times), which would exert adverse impacts on human health and ecological safety.
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