Effect of amprolium on production, sporulation, and infectivity of Eimeria oocysts

Amprolium reduced the number of oocysts shed by Eimeria acervulina, E. maxima, E. necatrix, and a mixture of susceptible strains of E. tenella. Sporulation of oocysts from medicated chickens was reduced compared with that of oocysts from unmedicated chickens. Sporulation was reduced by levels of 0.0...

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Bibliographic Details
Published inAvian diseases Vol. 37; no. 4; p. 988
Main Authors Ruff, M.D, Garcia, R, Chute, M.B, Tamas, T
Format Journal Article
LanguageEnglish
Published United States 01.10.1993
Subjects
AGUA POTABLE
ALIMENT MEDICAMENTEUX
AMPROLIO
AMPROLIUM
Amprolium - therapeutic use
Amprolium - toxicity
Animals
Chickens
Coccidiosis - drug therapy
Coccidiosis - veterinary
COQ
DIFERENCIAS BIOLOGICAS
DIFFERENCE BIOLOGIQUE
EAU POTABLE
Eimeria - drug effects
Eimeria - pathogenicity
Eimeria - physiology
EIMERIA ACERVULINA
EIMERIA MAXIMA
EIMERIA NECATRIX
EIMERIA TENELLA
Eimeria tenella - drug effects
Eimeria tenella - pathogenicity
Eimeria tenella - physiology
ESPORULACION
ETAPAS DEL DESARROLLO ANIMAL
GALLOS
Male
METHODE D'APPLICATION
METODOS DE APLICACION
PIENSOS MEDICINALES
PODER PATOGENO
Poultry Diseases
POUVOIR PATHOGENE
Spores - drug effects
SPORULATION
STADE DE DEVELOPPEMENT ANIMAL
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Summary:Amprolium reduced the number of oocysts shed by Eimeria acervulina, E. maxima, E. necatrix, and a mixture of susceptible strains of E. tenella. Sporulation of oocysts from medicated chickens was reduced compared with that of oocysts from unmedicated chickens. Sporulation was reduced by levels of 0.0250% amprolium for E. acervulina and by levels of 0.0060% for E. maxima and the susceptible E. tenella. Not enough oocysts were recovered to measure sporulation of E. necatrix. Sporulation reduction was not affected by the method of administration of amprolium (feed or water), except with E. acervulina, for which fewer oocysts sporulated when 0.0120% amprolium was added in the drinking water than when 0.0125% amprolium was added to the feed. Conversely, amprolium medication had no effect on the sporulation of an amprolium-resistant E. tenella. When fed to unmedicated chickens, those oocysts from amprolium-medicated chickens that did sporulate were as infective as oocysts recovered from unmedicated chickens
Bibliography:9453022
L72
ISSN:0005-2086
1938-4351
DOI:10.2307/1591904