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Virginiamycin (Feed Additive) for Chicken

Livestock · Gallus gallus domesticus · typical adult weight 0.50–5.00 kg

Virginiamycin (Feed Additive) is used in chicken for Growth promotion, necrotic enteritis prevention. Routes documented in chicken: PO. A typical adult chicken weighs 0.50–5.00 kg. ExoticRx lists 1 cited dose rule for Virginiamycin (Feed Additive) in chicken, drawn from published veterinary references. Verify against current literature before clinical use.

Trade names: V-Max, Stafac

Dose ranges

RouteDoseFrequencyDurationIndicationEvidenceSource
PO5–15 ppm in feedContinuous in feedContinuousGrowth promotion, necrotic enteritis preventionStrongFDA NADA Label

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Mechanism of action

Streptogramin antibiotic that inhibits bacterial protein synthesis. Consists of two synergistic components (virginiamycin M1 and S1) that bind to the 50S ribosomal subunit.

Side effects & warnings

Feed additive use only. Used for growth promotion and prevention of liver abscesses in feedlot cattle. Cross-resistance with quinupristin-dalfopristin has raised public health concerns.

Species-specific contraindications and adverse-reaction reports for chicken may differ from canine / feline reference data — consult the primary citations listed with each rule.

Other Antibiotic drugs with chicken dosing

AvilamycinBacitracin (Livestock Feed)BambermycinChlortetracyclineEnramycinEnrofloxacinFlorfenicolLincomycin (Livestock)Lincomycin-SpectinomycinOxytetracyclineSpectinomycin (Livestock)Sulfadimethoxine

Virginiamycin (Feed Additive) dosing in other species

CattleSwineTurkey
See all species for Virginiamycin (Feed Additive)See all drugs for Chicken

Why a species-specific page? Virginiamycin (Feed Additive) pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in chicken — the rules above are the citations specific to this species, not generic recommendations.

Sourced from published veterinary references; awaiting credentialed clinical reviewer. See our editorial process. Reference only — not veterinary advice.