A series of anthelmintic studies in the avian species relative to Ascaridia spp. infections

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" A series of anthelmintic studies in the avian species relative to Ascaridia spp. infections "
Jana Reynolds

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	54094
Doc. No	:	TL24048
Call number	:	‭1470869‬
Main Entry	:	Jana Reynolds
Title & Author	:	A series of anthelmintic studies in the avian species relative to Ascaridia spp. infections\ Jana Reynolds
College	:	University of Arkansas
Date	:	2009
Degree	:	M.S.
student score	:	2009
Page No	:	54
Abstract	:	Three studies were conducted to determine the effect of either fenbendazole or nitarsone on the establishment and treatment of Ascarida dissimilis (A. dissimilis ) in the turkey. In the first study, the objective was to determine the effectiveness of fenbendazole as a treatment (6-d regimen in the feed at 16 ppm). Based on mean bird weights and average daily gains it was determined that relatively light A. dissimilis burdens impacted animal performance and that these burdens were effectively removed with fenbendazole treatment. The second and third studies were conducted to determine if routinely prescribed dietary levels of nitarsone had an effect on the establishment or persistence of induced A. dissimilis infections in commercial turkey hens (study 2) or toms (study 3). In these studies, groups of birds were uninfected, or given standardized doses of larvated A. dissimilis eggs per os. Subgroups of infected birds were in turn left un-medicated, given nitarsone in the feed (0.01875%) from 7 to 56 days of age (prophylactic treatment), or given nitarsone in the feed at the above rate from 42 to 56 days of age (therapeutic treatment). Nitarsone medication was demonstrated to greatly reduce egg shedding by the established parasites. Additionally, dietary nitarsone was shown to significantly stunt adult ascarid length. Findings relative to fenbendazole (Safeguard® Intervet/Schering) are supportive of previous work on the effectiveness of this benzimidazole in turkeys. Findings concerning the impact of nitarsone (Histostat ® Alpharma/King Pharmaceuticals) are original, and will aid greatly in the observations and indications relative to the use of this arsenical in infected poultry.
Subject	:	Biological sciences; Animal sciences; 0476:Animal sciences
Added Entry	:	University of Arkansas