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|May 2012: Questions about milk quality|
|El Lechero Dairy Basics - Herd Health|
|Thursday, 10 May 2012 08:20|
Drug residues are very small amounts of antibiotics or other veterinary medicines that can remain in milk and animal tissue for a period of time after an animal has been treated. To keep residues from entering the food supply, milk from treated cows must be withheld from the bulk tank for a specified period to ensure that drug residues are no longer present.
In addition, animals may not be marketed as beef for a certain amount of time after the last treatment.
Why should we be concerned about residues?
Why do residues occur?
Residues can also be present in edible tissue and organs when insufficient time was allowed between the last treatment and when the animal was marketed.
Mistakes leading to residues in milk and dairy beef include:
How can residues affect the dairy?
If a producer markets a cow for beef that is later found to have a drug residue, an inspector will come out to the dairy to identify what led to the residue violation. Repeat residue violators can have their facility quarantined and lose the right to market cows for entry into the food system. Criminal penalties are also possible.
Milk and meat entering the food supply must be safe, nutritious and free of drug residues and other contaminants. EL