RESPIRATORY DISEASE IN GROW-FINISH USE OF WATER SOLUBLE ANTIBIOTICS (POWDERS)

Alan Scheidt
Raleigh, North Carolina

Extra Label Drug Use (ELDU)

*extra-label drug use is only permitted by or on the order (written or oral) of a licensed veterinarian within the context of a valid veterinarian-client-patient relationship;
*extra-label use of an animal drug approved for use in food animals is permitted if there is no animal drug with the same active ingredient and in the required dosage form and concentration approved for that use; identity of the treated animals must be maintained; withdrawal times must be long enough to prevent any residues in edible tissues;
*extra-label use of an animal drug approved for use in food animals is also permitted if an animal drug approved for the desired use is found to be ineffective in that clinical situation; *extra-label use is not permitted for non-therapeutic uses such as for production purposes or for improved reproductive performance;
*extra-label therapeutic preventive medicine is allowed in cases where the health of the animals would be threatened if treatment was delayed until clinical signs appeared;
*extra-label use of an animal drug not approved for use in food animals or of a human drug is allowed unless there is an animal drug approved for use in food animals that is approved for the desired use or that can be used in an extra label manner;
*extra-label use of animal drug not approved for use in food animals or of a human drug must be based on appropriate medical rationale; in addition, the veterinarian must have "scientific information on the human food safety aspect of the use of the drug in food-producing animals;" such information need not be published and could be available from FARAD, US Pharmacopeia, manufacturers, and other sources;
*required record keeping on a group, herd, flock, or per-client basis: identification of the drug and active ingredient(s), condition treated, species, duration of treatment, number treated, withdrawal time, records must be held for at least 2 years;
*proper labeling will include name and address of the veterinarian; established name of each active ingredient, identification of one or more of the following: class, species, animal, herd, flock, pen, lot or other group; directions for use including dosage, frequency, route of administration and duration, cautionary statements; specified withdrawal time;
*the FDA has legal access to a veterinarian's records of extra-label drug use; the main purpose of such access is for information-gathering to determine the extent of extra-label use of specific drugs that may pose a public health; veterinarians will be allowed to preserve client confidentiality by copying or reformulating records to only provide FDA with the information required by a specific request (1).

Veterinary-Client-Patient Relationship (VCPR)

A VCPR exists when all of the following conditions have been met:
*The veterinarian has assumed the responsibility for making clinical judgments regarding the health of the animal(s) and the need for medical treatment, and the client has agreed to follow the veterinarian's instructions.
*The veterinarian has sufficient knowledge of the animal(s) to initiate at least a general or preliminary diagnosis of the medical condition of the animal(s). This means that the veterinarian has recently seen and is personally acquainted with the keeping and care of the animal(s) by virtue of an examination of the animal(s) or by medically appropriate and timely visits to the premises where the animal(s) are kept.
*The veterinarian is readily available for follow-up evaluation in the event of adverse reactions or failure of the treatment regimen.

ANTIBIOTICS USED FOR GROW-FINISH RESPIRATORY DISEASE

APPROVED ANTIBIOTICS FOR SWINE

Trade Name
Ingredient
Label Indications
AUREOMYCIN®
chlortetracycline
bacterial pneumonia (Pasteurella spp. Hemophilus, spp. Klebsiella spp.)
AUREOMYCIN® and SULMET®
chlortetracycline and sulfamethazine
aid in the maintenance of weight gains in the presence of atrophic rhinitis
DENAGARD®
tiamulin
Actinobacillus pleuropneumoniaesusceptible to tiamulin when given at 10.5 mg tiamulin / LB bw/day
LINCOMIX®
lincomycin
**swine dysentery (bloody scours)
NEOMIX® 325
neomycin
**colibacillosis (bacterial enteritis)
TM343®
oxytetracycline
bacterial pneumonia caused by Pasteurella multocida

SOME ANTIBIOTICS APPROVED FOR USE IN FOOD ANIMALS (NOT SWINE)

Trade Name
Ingredient
Label Indications
ALBON®
sulfadimethoxine
dairy calves, dairy heifers, beef cattle, chickens, turkeys
TYLAN® SOLUBLE
tylosin
chickens and turkeys
L-S 50 WATER SOLUBLE POWDER (2)
lincomycin-spectinomycin
chickens

  1. Extra-label Drug Regulations Finalized, 1997 AASP Update, Dr. Tom Burkgren
  2. Veterinary Pharmaceuticals and Biologicals® 10th ed. 1997/1998