[Experimental transmission of Cryptosporidium baileyi (Apicomplexa: Cryptosporidiidae) isolated of broiler chicken to Japanese quail (Coturnix japonica)].
In this work, oocysts of Cryptosporidium baileyi were isolated and identified in broiler chickens from three different Municipalities of the State of Rio de Janeiro, where they were isolated and identified by using the centrifuge- flotation technique associated to bright-field. Staining techniques, such as: modified Ziehl-Neelsen and safranin-methylene blue, were carried out to confirm natural infection. Oocysts of C. baileyi from broiler chickens were able to infect Coccidia-free Japanese quails, by observation of endogenous stages at histological sections, and the elimination of oocysts in the feces with prepatent period of seven days and patent period of 21 days after infection. Oocysts of C. baileyi from broiler chickens and Japanese quails were similar on bright-field microscopy. With respect to the staining techniques used in this research, all of them left to significant changes in length and width of oocysts, but shape indexes were maintained. Bright-field microscopy was the best technique for oocysts comparison shed by broiler chickens and Japanese quail because of no different among oocysts were observed.
Cardozo
Sergian V
SV
Universidade Federal Rural do Rio de Janeiro, Bolista-CNPq, Brazil.
Teixeira Filho
Walter L
WL
Lopes
Carlos Wilson G
CW
D000818:Animals; D002645:Chickens / Q000469:parasitology*; D003370:Coturnix / Q000469:parasitology*; D003457:Cryptosporidiosis / Q000635:transmission*; D003458:Cryptosporidium / Q000302:isolation & purification*; D005243:Feces / Q000469:parasitology; D033661:Oocysts