Browsing by Author "Ferreirinha, Dario"
Now showing 1 - 4 of 4
Results Per Page
Sort Options
- Intestinal parasites in dogs from the Center-west of PortugalPublication . Crespo, Maria Virgínia; Rosa, Fernanda; Morgado, Marina; Ferreirinha, Dario; Cerejo, A.; Madeira, MartaEnvironmental contamination by dog faeces in public areas is considered a risk factor to Public Health. Therefore, during a period of five years (2000-2005) a parasitological study on dog faeces was performed in Center-West region of Portugal. Coprological exams were performed. Out of 2806 samples analysed, 792 (28,23%) showed eggs/oocysts of intestinal parasites, with higher prevalences in rural areas (53,35%). Specimen eggs belonging to the families Taeniidae, Dipylidiidae, Ancylostomatidae, Ascarididae, Trichuridae and Spirocercidae and oocysts from Eimeriidae and Sarcocystidae, were identified. The results obtained pointed out to the continuity of prophylactic measures which has already been implemented in the studies areas.
- Parasitismo num núcleo de cavalos da raça SorraiaPublication . Crespo, Maria Virgínia; Rosa, Fernanda; Ferreirinha, DarioNo sentido de se implementar um esquema profilático antiparasitário adequado aos equinos de raça Sorraia recém introduzidos na Escola Superior Agrária de Santarém (janeiro 2003), procedeu-se à pesquisa de endo e ectoparasitas quando da sua chegada, bem como à colheita de fezes quinzenais, durante 16 meses, para determinar o período de reaparecimento de ovos e os tipo, grau e evolução do parasitismo. As amostras de fezes foram sujeitas a exames qualitativos (técnicas de Willis e de sedimentação espontânea) e quantitativos (técnica de McMaster) e a coproculturas. Identificaram-se ovos de estrongilídeos gastrintestinais, formas larvares de Gasterophilus intestinalis e espécimes adultos de Dermacentor marginatus. Com base nestes resultados os animais foram desparasitados com EQVALAN® e com ARPON®. O período de reaparecimento de ovos foi de 8 semanas nas fêmeas e de 18 nos machos. Na época de cobrições, as médias de eliminação nas fêmeas, foram acima dos 1000 estrongílideos gastrintestinais/ovos por grama de fezes. Depois da 2ª desparasitação (junho de 2003), verificou-se uma evolução do parasitismo idêntica à manifestada anteriormente, no entanto, a média de eliminação de ovos foi inferior, pelo que apenas se repetiu a desparasitação em 2004, antes do início das cobrições. Os resultados obtidos determinaram a implementação de um esquema de tratamento bianual.----In order to implement a deworming program suitable to introduced Portuguese Sorraia donkeys in Escola Superior Agrária of Santarém, a research on endo and ectoparasites was performed immediately after their introduction and for a period of 16 months to evaluate the type, degree, evolution of parasitism and the eggs reappearing period. Fortnightly faeces samples were taken and qualitative and quantitative parasitological exams were performed. Gastrointestinal strongylids eggs, Gasterophilus intestinalis larvae and Dermacentor marginatus were identified. Based on these results the animals were dewormed with EQVALAN® and ARPON®. The eggs reappearing period was 8 weeks in mares and 18 in stallions. During the breeding season, the average of egg output in females was above 1000 gastrointestinal strongylids. After the 2nd deworming (June 2003), the pattern of helminths egg output was similar to that one described above, although the egg output was minor, consequently the next deworming occurred only in the following year, in 2004, just before the beginning of the breeding season. Data suggested the implementation of a deworming program with two annual treatments.
- Ticks on dogs and its role as vectors: intermediate hosts in the Center-West of PortugalPublication . Rosa, Fernanda; Crespo, Maria Virgínia; Ferreirinha, Dario; Morgado, Marina; Madeira, Marta; Santos-Silva, M.; Sousa, R.Dogs are one of the most important hosts in the maintenance of tick population. In order to identify the species and their role on the transmission of hemoparasites and rickettsiae, ticks were collected on 466 dogs of Center- West region of Portugal. Taxonomical studies were done and appositional hemolymph smears were also performed in order to search for rickettsia infections. Some ticks were processed for DNA extraction and screened by PCR for detection of rickettsiae DNA. Specimens of Rhipicephalus sanguineus, R. pusillus, Ixodes spp. and Hyalomma marginatum were identified. Only the first two species were found infected with a rickettsial strain Bar29 and with R. massiliae. These results reinforce the important role of dogs and its ticks on epidemiology of tick-borne rickettsiae agents in Portugal.
- Tipo e grau de parasitismo em poldros estabulados de raça lusitanaPublication . Ferreirinha, Dario; Jorge, H.; Agrícola, R.; Rosa, Fernanda; Crespo, Maria VirgíniaEste trabalho teve como objectivo a determinação do tipo e do grau de parasitismo presentes em poldros (Puro Sangue Lusitano), com idades compreendidas entre os oito e os 12 meses, durante o período de Janeiro a Maio de 2002. Para tal, utilizaram-se 16 animais em regime estabulado, com igual maneio alimentar. Quinzenalmente, efectuaram-se colheitas indirectas de fezes para posteriores análises coprológicas, qualitativas e coproculturas. Nas análises coprológicas realizadas, registou-se a presença de ovos de estrongilídeos gastrintestinais (87,50%), de Parascaris equorum (75%) e de Strongyloides westeri (6,25%). Nas amostras de fezes, recolheram-se e identificaram-se espécimes adultos de Oxyuris equi (6,25%, Cylicocyclus elongatus (6,25%), Cylicocyclus radiatus (6,25%) e larvas (L3) de Gasterophilus intestinalis (18,75%). A partir das coproculturas observaram-se em todos os animais larvas de 3º estádio (L3) dos géneros Cyathostomum (76,00%) e Triodontophorus (6,3%) e as espécies Trichostrongylus axei (13,50%) e Strongyloides westeri (4,00%). A eliminação de ovos de estrongilídeos gastrintestinais e de L3, apresentaram uma média total de 50,8% EGI/OPG – 0,8 L3, respectivamente. Nas associações parasitárias, verificou-se que, apenas um animal apresentou infecção simples (6,25%), sete (43,75%) infecção dupla, três (18,75%) infecção tripla, tendo os cinco restantes (31,25%), infecção superior a três. Os resultados foram sujeitos a um estudo estatístico, através do PROC GLM do SAS (Statystical Analisys System). A parasitological study in colts (Lusitano pure-blooded) with ages between eight and 12 months, was performed in order to identify the parasites involved, during the period of January to May of 2002. Sixteen stabled animals were used, with the same feeding management. Fecal samples collected indirectly, were taken fortnightly for posterior coprological analysis (qualitative and quantitative) and fecal cultures. The egg out put revealed the presence of gastrointestinal strongyles (87,50%); Parascaris equorum (75%); Strongyloides westeri (6,25%). In the fecal samples, adult specimens of Oxyuris equi (6,25%, Cylicocyclus elongatus (6,25%), Cylicocyclus radiatus (6,25%) and larvae (L3) of Gasterophilus intestinalis (18,75%) were collected and identified. Cyathostomum (76,00%) e Triodontophorus (6,3%) e as espécies Trichostrongylus axei (13,50%) e Strongyloides westeri (4,00%) were observed on fecal cultures. Gastrointestinal strongyles egg output and larvae of 3rd stage (L3), showed an average of 50,8 GIS/EPG -0,8L3, respectively. In parasitic associations, only one animal showed simple infection (6,25%), seven (43,75%) double infection, three (18,75%) triple infection, and the remaining five (31,25%), more than three species. Results were statistically analysed using PROC GLM of SAS (Statystical Analisys System).