Translator Disclaimer
1 January 1987 PATHOGENICITY OF EIMERIA LETTYAE RUFF, 1985 IN THE NORTHERN BOBWHITE (COLINUS VIRGINIANUS L.)
Author Affiliations +
Abstract

Sporulated oocysts of Eimeria lettyae were administered orally to 5-day-old or 18-day-old northern bobwhites (Colinus virginianus, L.). Five-day-old bobwhites were more susceptible based on higher mortality and reduced weight gain. A dose of 5 × 105 oocysts produced 25–43% mortality in 5-day-old bobwhites, but none in 18-day-old bobwhites. A dose of 1 × 106 oocysts/bobwhite produced 83–100% mortality in 5-day-old bobwhites, and 17–83% mortality in 18-day-old bobwhites. Body weight gain was reduced significantly with a dose of 1 × 105 oocysts or greater in 5-day-old bobwhites and with a dose of 5 × 105 oocysts or greater in 18-day-old bobwhites. Infection in all age groups reduced concentrations of plasma pigment and plasma protein, but did not affect packed cell volumes. No grossly visible lesions were present in the intestine although there was a shortening of the villi in the duodenum. In mature bobwhites, infection with E. lettyae did not cause mortality, but did reduce egg production and fertility.

Ruff and Wilkins: PATHOGENICITY OF EIMERIA LETTYAE RUFF, 1985 IN THE NORTHERN BOBWHITE (COLINUS VIRGINIANUS L.)
M. D. Ruff and G. C. Wilkins "PATHOGENICITY OF EIMERIA LETTYAE RUFF, 1985 IN THE NORTHERN BOBWHITE (COLINUS VIRGINIANUS L.)," Journal of Wildlife Diseases 23(1), (1 January 1987). https://doi.org/10.7589/0090-3558-23.1.121
Received: 29 April 1985; Published: 1 January 1987
JOURNAL ARTICLE
6 PAGES


SHARE
ARTICLE IMPACT
Back to Top