T. K. Jeffers
Eli Lilly and Company
16 Papers
109 Citations
T. K. Jeffers is an academic researcher from Eli Lilly and Company. The author has contributed to research in topics: Eimeria & Monensin. The author has an hindex of 10, co-authored 16 publications.
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Papers
Practical Immunization of Chickens against Coccidiosis Using an Attenuated Strain of Eimeria tenella
TL;DR: Flock immunity, as determined by immunity challenge, was equivalent between the control strain and the higher dosages of Wis-F-125, and the Wis- F-96 strain did not adequately immunize chickens in these experiments.
41
Monensin sensitivity of recent field isolates of turkey coccidia.
T. K. Jeffers,E. J. Bentley +1 more
TL;DR: After more than eight years of intensive use of monensin as an anticoccidial in US broiler production facilities, this type of resistance to the polyether antibiotic anticoccIDials has not been encountered in chicken coccidia.
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Parental Development of Eimerian Coccidia in Sandhill and Whopping Cranes1
TL;DR: Exposure of six incubator-hatched and hand-reared sandhill crane chicks to oocysts artificially and naturally resulted in typical infection of intestinal epithelium with invasion of subepithelial tissues extending to the muscular layer and widespread extraintestinal development.
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Comparative in vitro development of precocious and normal strains of Eimeria tenella (Coccidia).
Larry R. McDOUGALD,T. K. Jeffers +1 more
TL;DR: Eimeria tenella strain Wis-F is known to develop in chickens with a significantly shortened prepatent period and its pathogenicity is virtually completely attenuated, indicating omission of a portion of the life cycle (2nd generation schizogony).
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Pulmonary lesions in disseminated visceral coccidiosis of sandhill and whooping cranes
TL;DR: Oocysts were observed in the trachea and bronchial mucosa and admixed with exudate in the airways, indicating that crane eimerians can complete their life cycle at these sites, of the few eimeriid coccidia that have extraintestinal stages of development in birds and mammals.