Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Prioritizing Environmental Risks of Veterinary Antibiotics Based on the Use and the Potential to Reach Environment

사용량과 잠재적 환경 유출 가능성을 기준으로 한 축산용 항생제의 우선순위 결정

  • Received : 2007.01.18
  • Accepted : 2007.02.10
  • Published : 2007.02.28
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Abstract

Veterinary antibiotics have been widely used to increase feed efficiency, to prevent disease, and to promote growth as well as to control disease. The antibiotics administered can be excreted through the urine and feces. One of the major routes of veterinary antibiotics entering soil and water environment is via the application of animal manure to agricultural land as an organic fertilizer source. Since little is known about impacts of antibiotics on the environment, this study was conducted to prioritize the veterinary antibiotics based on the consumption and potential to reach the environment. Among 83 veterinary antibiotics consumed in Korea, ten antibiotics were used at the greater dose than 25 Mg in 2004. Potential to reach the environment was determined according to excretion rate after administered to animals and sorption affinity to soil solids after applied to agricultural land. Seventeen antibiotic active ingredients (Ais) were classified as 'High' priority in terms of the potential to reach the environment. An overall priority score was determined by combining priority score based on consumption with the degree of potential environment exposure. Twenty veterinary antibiotic AIs were classified as 'Very high' or 'High' priority requiring detailed assessment. The antibiotic AIs were identified four aminoglycosides, two macrolides, two penicillins, five sulfonamides, three tetracyclines, two quinolones, and two miscellaneous. Eight veterinary antibiotic AIs including amoxicillin, carbadox, chlortetracycline, neomycin, oxytetracycline, sulfamethazine, sulfathiazole, and tylosin were identified to have a greater priority of environmental risk in Korea.

가축 질병의 예방 및 치료뿐만 아니라 사료 이용효율 증대와 생장 촉진을 위하여 축산용 항생제가 쓰여져 왔으며, 이 항생제는 가축분뇨를 통해 배출되어 농경지에 유입될 가능성이 있다. 나아가 용탈과 표면 유거를 거쳐 수계에 도달할 수 있으나, 모든 항생제의 환경 유출 가능성을 검토하는 데에는 많은 시간과 노동력, 예산이 필요하다. 본 연구는 축산용 항생제의 사용량과 잠재적 환경 유출 가능성을 기준으로 우선 순위를 결정하고자 수행되었다. 2004년에 우리 나라에서 판매된 항생제는 83종으로 약 1,400 톤에 달하였으며, 이 가운데 25 톤 이상 사용된 항생제는 10종이었다. 3 톤 이상 쓰인 36 종의 항생제를 대상으로, 가축의 배출율과 토양 흡착 정도를 가지고 잠재적 환경 유출 가능성을 판단하여 17 종을 선발하였다. 축산용 항생제의 사용량과 잠재적 환경 유출 가능성을 종합하여 검토한 결과, amoxicillin과 carbadox, chlortetracycline, neomycin, oxytetracycline, sulfamethazine, sulfathiazole, tylosin 등 8종이 상대적으로 환경으로의 유출 가능성이 높아 금후 정밀한 평가가 요구되었다. 비록 항생제의 가축분뇨로의 배출율과 토양내 동태에 대한 정보가 제한적일지라도, 본 연구에서는 한국에서 쓰이고 있는 축산용 항생제의 사용량과 알려진 항생제의 배출율과 토양 흡착 정도를 바탕으로 환경으로의 유출 가능성이 큰 항생제를 결정하였다.

Keywords

References

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