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Previous issue date: 2009-02-11 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Ostriches are susceptible to many diseases and until recently, many of them are unknown and
can affect these animals when it comes to commercially breeding. In Brazil, the commercial
establishment has been initiated 20 years ago, but already there are reports about the diseases
that can affect these birds. The objectives of this study were identify morphologically
gastrointestinal protozoans and nematodes of ostriches and see the variations: the parasitic
infection that occurs in accordance to the dry and rainy seasons, and the elimination of eggs of
nematodes and oocysts / cysts of protozoa by age, in a commercial establishment located in
Itabora? City, Microregion of Rio de Janeiro, State of Rio de Janeiro. During the period from
June 2004 to May 2006 ostriches were separated into three age groups: up to 90 days, 91 to
365 days and over 365 days (adults). The collection was held monthly and fecal samples were
individually obtained, placed in plastic bags, identified and kept under refrigeration until the
moment to be examined. There were employed the techniques of centrifuge-flotation in
saturated sucrose solution, centrifuge-sedimentation in formalin-ether, culture of feces and
stained by Safranin-Metilen Blue, and Gomori trichrome of iron Hematoxylin. Meteorological
data were also obtained to determine the dry and rainy seasons. There were identified the
nematode Codiostomum struthionis and three genera of intestinal protozoa: Blastocystis,
Entamoeba and Cryptosporidium. All birds younger than 365 days showed a higher frequency
of the genus Cryptosporidium. Among the mixed infections the most common was the
association of C. struthionis with Cryptosporidium. (17.74%) in adults. There was a greater
shedding of Strongylida eggs (p <0.05) and also larger number of animals that shed oocysts /
cysts of intestinal protozoans in feces during the rainy season (p <0.05). A larger number of
animals less than 365 days eliminated cysts / oocysts of protozoa, which is significantly
correlated to the genus Entamoeba in animals up to 90 days compared with 91 to 365
(p=0.036) and to the genus Blastocystis, in this case when compared with the over 365 days
(p=0.09). / Avestruzes s?o suscet?veis a diversas enfermidades e at? h? pouco tempo se desconheciam
aquelas que podem acometer esses animais quando criados comercialmente. No Brasil a
cria??o comercial iniciou-se h? cerca de 20 anos, mas j? existem relatos sobre as doen?as que
podem acometer essas aves. Os objetivos do presente trabalho foram identificar
morfologicamente protozo?rios e nemat?ides gastrintestinais de avestruzes e verificar as
varia??es: da infec??o parasit?ria de acordo com as ?pocas seca e chuvosa, e da elimina??o de
ovos de nemat?ides e de oocisto/cisto de protozo?rios por faixa et?ria, em uma cria??o
comercial localizado no Munic?pio de Itabora?, Microrregi?o do Rio de Janeiro, Estado do Rio
de Janeiro. Durante o per?odo de junho de 2004 a maio de 2006 foram coletadas fezes de
avestruzes de tr?s faixas et?rias: at? 90 dias, de 91 a 365 dias e acima de 365 dias (adultos). A
coleta foi realizada mensalmente e as amostras fecais eram obtidas individualmente,
colocadas em sacos pl?sticos, identificadas e mantidas sob refrigera??o at? o memento de
serem examinadas. Foram empregadas as t?cnicas de centrifugo-flutua??o em solu??o
saturada de a??car, centrifugo-sedimenta??o em formol-?ter, coprocultura e colora??es por
safranina-azul de metileno, tricr?mio de gomori e hematoxilina f?rrica. Tamb?m foram
obtidos dados meteorol?gicos para determinar as ?pocas seca e chuvosa. Foram identificados
o nemat?ide Codiostomum struthionis e tr?s g?neros de protozo?rios intestinais: Blastocystis,
Cryptosporidium e Entamoeba. Todas as aves com menos de 365 dias apresentaram maior
freq??ncia do g?nero Cryptosporidium. Dentre as infec??es mistas a mais comum foi a
associa??o de C. struthionis com Cryptosporidium sp. (17,74%) nos adultos. Houve maior
elimina??o de ovos da ordem Strongylida (p<0,05) e tamb?m um maior n?mero de animais
que eliminaram oocistos/cistos de protozo?rios intestinais nas fezes durante a ?poca chuvosa
(p<0,05). Um maior n?mero de animais com menos de 365 dias eliminaram cistos/oocistos de
protozo?rios, sendo essa correla??o significativa para o g?nero Entamoeba nos animais com
at? 90 dias quando comparados com os de 91 a 365 e para o g?nero Blastocystis, nesse caso
quando comparados com os acima de 365 dias.
| Identifer | oai:union.ndltd.org:IBICT/oai:localhost:tede/770 |
| Date | 11 February 2009 |
| Creators | Soleiro, Carla Alves |
| Contributors | Menezes, Rita de C?ssia Alves Alcantara de |
| Publisher | Universidade Federal Rural do Rio de Janeiro, Curso de P?s-Gradua??o em Ci?ncias Veterin?rias, UFRRJ, Brasil, Parasitologia Veterin?ria |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da UFRRJ, instname:Universidade Federal Rural do Rio de Janeiro, instacron:UFRRJ |
| Rights | info:eu-repo/semantics/openAccess |
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