High susceptibility of partridges (Perdix perdix) to toxoplasmosis compared with other gallinaceous birds

Citation
K. Sedlak et al., High susceptibility of partridges (Perdix perdix) to toxoplasmosis compared with other gallinaceous birds, AVIAN PATH, 29(6), 2000, pp. 563-569
Citations number
29
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Veterinary Medicine/Animal Health
Journal title
AVIAN PATHOLOGY
ISSN journal
0307-9457 → ACNP
Volume
29
Issue
6
Year of publication
2000
Pages
563 - 569
Database
ISI
SICI code
0307-9457(200012)29:6<563:HSOP(P>2.0.ZU;2-M
Abstract
Partridges (Perdix perdix), chukars (Alectoris chukar), wild guineafowl (Nu mida meleagris), wild turkeys (Meleagris gallopavo) and chickens (Gallus do mesticus) were inoculated per os with 10(3) or 10(5) Toxoplasma gondii oocy sts (K7 strain). Two of five partridges fed 10(3) oocysts and six of eight partridges fed 10(5) oocysts died between day 6 and 16 post-inoculation (p. i.); no clinical symptoms were observed in surviving birds. Antibodies to T . gondii were detected in the birds by the indirect fluorescence antibody t est (IFAT) first on day 7 p.i. On days 14, 21 and 28 p.i. (end of the exper iment), antibodies were found in all partridges, chukars, guineafowl and tu rkeys. In chickens, IFAT antibodies were first detected on day 14 p.i., and all chickens were serologically positive on days 21 and 28 p.i. Bioassay i n mice revealed T. gondii in the brain, liver, spleen, heart and leg muscle s of all partridges and chukars. Enteritis was the most striking lesion in partridges that died. Results indicated that partridges are highly suscepti ble to toxoplasmosis, while chukars, wild guineafowl and turkeys seem to be less susceptible. Chickens are highly resistant to T. gondii infections.