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Wednesday, May 4, 2016

Ask the Vet

Monday, December 12, 2011

Updated Drug Withdrawl Times for Cattle

The veterinary profession has a variety of drugs available for use in food animals. These products that are specifically labeled for use in food animals , have undergone rigorous testing to ensure that withdrawl times are accurate, and will not pose a threat to consumers. It is important to note that each product that is labeled for use in food animals, is also labeled for a specific dose (ml per 100lb) and a specific route of administration (subcutaneous, intramuscular, or intravenous).

Veterinarians have the ability to change a dose or route of administration based on specific situations for specific animals. This is called "Extra Label Drug Use" (ELDU) and its use can only be allowed after specific instruction by your veterinarian. That is the law, and one which we, as veterinarians and food animal producers, are required to follow. With that in mind, we wanted to give an update of recommended withdrawl times on certain compounds regularly used. These recommendations are made by FARAD (Food Animal Residue Avoidance & Depletion Program), sponsored by the USDA, and can be found on their website www.farad.org.


Flunixin,1.0 ml/100 lb; IV only; Milk Withdrawal, 36 hrs; Meat Withdrawal, 4 days

Flunixin Meglumine,1.0 ml/100 lb; IM (ELDU); milk withdrawal, 72 hrs.; meat withdrawal,30 days

Oxytetracycline , 4.5 ml/100 lb ; SQ or IM IV (ELDU); milk withdrawal,192 hours; meat withdrawal, 50 days

Oxytetracycline , 4.5 ml/100 lb ; SQ or IM (ELDU if lactating dairy); milk withdrawal,192 hours; meat withdrawal, 50 days
Oxytetracycline , Up to 2 g; Intrauterine infusion (ELDU); milk withdrawal, 72 hours and test; meat withdrawal, 28 days
Oxytetracycline, 4-6 g; Intrauterine infusion (ELDU); milk withdrawal,192 hours and test; meat withdrawal, 35 days
Procaine Penicillin G (short-acting) , 3.5-4.0 ml/100 lb (ELDU); IM daily for 5 days ; milk withdrawal, 5 days; meat withdrawal,12 days
Procaine Penicillin G (short-acting), 10 ml/100 lb (ELDU);IM daily for 5 days ; milk withdrawal, test; meat withdrawal, 21 days

Benzathine Procaine Penicillin G (long-acting), 2.0 ml/150 lb ; SQ; milk withdrawal, Not approved for use in lactating dairy; meat withdrawal, 30 days