Safety Evaluation of Lasalocid Use in Chinese Ring-Necked Pheasants (Phasianus colchicus)

Date
2013-06-01
Authors
Dzikamunhenga, R. S.
Wilberts, Bailey
Yaeger, Michael
Burrough, Eric
Bender, Holly
Hostetter, J.
Bender, Holly
Larson, W.
Griffith, Ronald
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Veterinary Pathology
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Animal Science
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Veterinary PathologyAnimal ScienceVeterinary Microbiology and Preventive Medicine
Abstract

Coccidiosis remains a significant threat to the welfare of game farm–reared pheasants in the United States. Although lasalocid has been demonstrated to be effective against pheasant specific coccidia, information regarding its safety in this species is lacking. The purpose of this study was to gather data on the safety of lasalocid when fed to Chinese ring-necked pheasants at one, two, and three times the recommended high dose of lasalocid used for prevention of coccidiosis in other poultry at three times the normal treatment period. Pheasant chicks (approximately 1 day-old; n  =  160) were randomly blocked by sex into four treatment groups and given their respective diets continuously for 6 wk. No significant differences were observed in overall feed consumption, weight gain, feed conversion rates, clinical pathology measurements, or tissue gross and histopathologic evaluations between controls and treatment groups associated with lasalocid administration. Based on the results of this study it appears that lasalocid fed at the recommended rate of 125 ppm is safe in Chinese ring-necked pheasants.

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This article is published as Dzikamunhenga, R. S., B. Wilberts, M. Yaeger, E. Burrough, J. Hostetter, H. Bender, W. Larson, and R. W. Griffith. "Safety evaluation of lasalocid use in Chinese ring-necked pheasants (Phasianus colchicus)." Avian Diseases 57, no. 2 (2013): 188-191. DOI: 10.1637/10320-080612-Reg.1. Posted with permission.

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