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Dose-Titration to Confirm the Level of Fenbendazole for Control of Raillietina cesticillus in Broiler Chickens

L. M. Pote, C. E. Couvillion, R. W. Keirs, R. D. Schwartz, R. F. Taylor, J. H. Hackathorn and L. K. Johnson
Avian Diseases
Vol. 36, No. 3 (Jul. - Sep., 1992), pp. 722-724
DOI: 10.2307/1591772
Stable URL: http://www.jstor.org/stable/1591772
Page Count: 3
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Dose-Titration to Confirm the Level of Fenbendazole for Control of Raillietina cesticillus in Broiler Chickens
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Abstract

A total of 452 broiler chickens, naturally infected with Raillietina cesticillus, were allotted into six treatment groups. One group was fed unmedicated broiler ration (Group 1), and the other five groups were fed broiler ration containing fenbendazole at 180 ppm for 3 days (38.5 mg/kg body weight [BW]), 240 ppm for 3 days (50.9 mg/kg BW), 120 ppm for 6 days (52.2 mg/kg BW), 180 ppm for 6 days (79.9 mg/kg BW), or 240 ppm for 6 days (104.3 mg/kg BW). Fenbendazole was 100.0% efficacious against R. cesticillus when administered in the diet at 240 ppm for 6 days; 99.9% at 240 ppm for 3 days and at 180 ppm for 6 days; 99.5% at 120 ppm for 6 days; and 96.9% at 180 ppm for 3 days. Fenbendazole treatment had no adverse effect on weight gain or feed intake. /// Un total de 452 pollos de engorde, infectados naturalmente con Raillietina cesticillus, se dividieron en seis grupos para diferentes tratamientos. Un grupo fue alimentado con una ración de engorde sin medicamento (grupo 1), mientras que los otros cinco grupos fueron alimentados durante tres días con una ración de engorde que contenía fenbendazole a razón de 180 ppm durante 3 días (38.5 mg/kg de peso vivo), 240 ppm durante 3 días (50.9 mg/kg de peso vivo), 120 ppm durante 6 días (52.2 mg/kg de peso vivo), 180 ppm durante 6 días (79.9 mg/kg de peso vivo), o 240 ppm durante 6 días (104.3 mg/kg de peso vivo). La efectividad del fenbendazole contra R. cesticillus fue del 100.0% cuando se suministró en la dieta a 240 ppm durante 6 días; del 99.9% a dosis de 240 ppm durante 3 días y a 180 ppm durante 6 días; del 99.5% a dosis de 120 ppm por 6 días; y del 96.9% a dosis de 180 ppm durante 3 días. El tratamiento con fenbendazole no tuvo ningún efecto adverso sobre la ganancia de peso y el consumo de alimento.

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