1In this context, this principle takes into account development of resistance or cross-resistance to important antimicrobials.
Antibiotic--a chemical substance produced by a microorganism which has the capacity, in dilute solutions, to inhibit the growth of or to kill other microorganisms.
Antimicrobial--an agent that kills microorganisms or suppresses their multiplication or growth.
Broad Spectrum Antimicrobial--a type of antimicrobial effective against a large number of bacterial genera; generally describes antimicrobials effective against both Gram-positive and Gram-negative bacteria.Narrow Spectrum Antimicrobial--a type of antimicrobial effective against a limited number of bacterial genera; often applied to an antimicrobial active against specific families of bacteria.
Antimicrobial Resistance--a property of microorganisms that confers the ability to inactivate or elude antimicrobials or a mechanism that blocks the inhibitory or killing effects of antimicrobials.
Extralabel Use--extralabel use means actual use or intended use of a drug under veterinary direction, in an animal in a manner that is not in accordance with the approved labeling. This includes, but is not limited to, use in species not listed in the labeling, use for indications (disease or other conditions) not listed in the labeling, use at dosage levels, frequencies, or routes of administration other than those stated in the labeling, and deviation from the labeled withdrawal time based on these different uses.
Immunization--the process of rendering a subject immune or of becoming immune, either by conventional vaccination or exposure.
Monitoring--monitoring includes periodic health surveillance of the population or individual animal examination.
Therapeutic--treatment, control, and prevention of disease.
Veterinarian/Client/Patient Relationship (VCPR) -- A VCPR exists when all of the following conditions have been met:
Veterinary Feed Directive (VFD) Drug--The VFD category of medicated feeds was created by the Animal Drug Availability Act of 1996 to provide an alternative to prescription status for certain therapeutic animal pharmaceuticals for use in feed. Any animal feed bearing or containing a VFD drug shall be fed to animals only by or upon a lawful VFD issued by a licensed veterinarian in the course of the veterinarian's professional practice.