| The reasons of drug residues in bulk milk |
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Jeong-hun Kang1, Jin-suk Kim1, Pill-su Choi2, Won-chang Lee1 |
1School of Veterinary Medicine, Konkuk University
2Department of Dairy Control, Konkuk Dairy |
| 원유내 약물잔류의 원인에 관한 연구 |
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강정훈1, 김진석1, 최필수2, 이원창1 |
1건국대학교 수의학부
2건국유업 낙농팀 |
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| Abstract |
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The 102 farms received a positive result of the bulk milk drug residue test were selected to investigate the reasons of drug residues in bulls milk. The most frequent causes of drug residues were milker or producer mistakes (28.4%), failure to observe withdrawal time (21.5%), and withholding milk from treated quarters only (19.6%). Milker or producer mistakes occurred high at the farms having a parlor system (4 cases out of 11 farms), and related to the inadequate records and marking of treated cows. The lack of knowledge on the absorption of antibiotic from treated quarters and its excretion from untreated quarters caused mainly withholding milk from treated quarters only. Among the 91 farms identified the cause of drug residues, most of the route of drug administration was intramammary infusion (81.3%), and mostly drug used for the treatment of cows was ${eta}$-lactam antibiotic (57.1%) |
| Key Words:
drug residues, bulk milk, reasons of drug residues |
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