- Discard milk from all four quarters of udder, even if only one quarter was treated
- Dry-cow treatments last longer—test all dry-treated cows, especially those that freshen early—before putting them back into the milking line
- Extra-label treated cows' withholding times are unknown—test all extra-label treated cows before putting them back into the milking line
- Segregate and test all purchased herd replacements before introducing them into the milking herd
- Follow label directions for medicated feed, and never use feed intended for other livestock
- Withhold milk from any cow receiving oral, intramuscular, udder infusion or intrauterine antibiotic treatments, and some salves and sprays
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