Antibiotic Extender Patties for Control of American Foul Brood

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Abstract
Summary A single application of Terramycin (Oxytetracycline HCl) was administered to honeybee colonies in a solid cake or patty. The patties contained sugar as a diluent and vegetable fat or petroleum jelly as a binder. The binder maintained the consistency of the patty (antibiotic extender patty) and controlled the feeding rate of the bees to provide an extended release of medicant for a period of more than two months. Antibiotic extender patties containing Terramycin in the dose rate described effectively controlled American foul brood in experimentally infected colonies. Doxycycline was less effective than Terramycin, and sulphathiazole was ineffective in this medium. Combination drugs containing Terramycin were as effective as Terramycin alone.

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