J. Appl. Poult. Res.
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J APPL POULT RES 1997. 6:274-278
© 1997 Poultry Science Association
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Research Reports

Eyespray Vaccination: Infectivity and Development of Immunity to Eimeria acervulina and Eimeria tenella

H. David Chapman

Department of Poultry Science, University of Arkansas, Fayetteville, AR 72701; Phone: (501) 575-4870; FAX: (501) 575-4202

Tim E. Cherry

Stephen F. Austin State University, P. O. Box 13000, Nacogdoches, TX 75962

Correspondence: H. David Chapman

The infectivity of a coccidiosis vaccine and its ability to immunize chickens against two species of Eimeria was examined. The vaccine was administered to newly-hatched chicks by spraying directly onto the eye. The method resulted in a high proportion of chicks infected with E. acervulina and E. tenella. Vaccinated birds reared in cages in the absence of reinfection did not develop immunity to either species by 4 wk of age, but birds reared in floor pens developed immunity to both E. acervulina and E. tenella.

Key Words: Chicken • coccidiosis • Eimeria • eyespray • immunity • vaccine






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