Publications by authors named "Ana Sue Sammi"
Article Synopsis
- The study assessed the re-shedding of T. gondii oocysts in cats after being fed tissue cysts of various strains over periods of 12, 24, and 36 months post-initial infection, involving 13 cats divided into four groups.
- Results showed that all cats shed oocysts after the first infection; however, the percentage of cats shedding oocysts decreased over time, with 90% shedding after 12 months, 25% after 24 months, and 33.4% after 36 months, indicating some level of protection against re-excretion.
- Overall, the study concluded that re-infection with a heterologous strain resulted in higher o
Article Synopsis
- Neosporosis, caused by the protozoan parasite Neospora caninum, leads to significant economic losses in cattle worldwide.
- Birds, particularly free-ranging eared doves, were studied in Southern Brazil as bioindicators for this parasite due to their ground-feeding habits.
- The study found that 31.72% of the doves had antibodies against N. caninum, indicating prior exposure, but no parasite DNA was detected, suggesting a need for further research on the role of doves in the parasite's life cycle.
The aim of the present study was to evaluate oocyst shedding in cats immunized by nasal route with T. gondii proteins ROP2. Twelve short hair cats (Felis catus) were divided in three groups G1, G2 and G3 (n=4).
View Article and Find Full Text PDFEared doves (Zenaida auriculata), which are common in urban, rural and wild areas in many regions of Brazil, are frequently prey for domestic cats. Therefore Toxoplasma gondii isolates obtained from doves may reflect greater environmental diversity than those from other hosts. The aim of the present study was to evaluate T.
View Article and Find Full Text PDFAnti-Neospora caninum antibody detection and vertical transmission rate in pregnant zebu beef cows (Bos indicus): Neospora caninum in pregnant beef cows (Bos indicus).
Comp Immunol Microbiol Infect Dis
September 2014
The aim of the present study was to evaluate anti-Neospora caninum antibodies and the vertical transmission rate in naturally infected pregnant zebu beef cows (Bos indicus) reared on pasture. The present study began with 200 cows from four farms (50 cows from each farm), and these animals were submitted to timed artificial insemination (TAI). After ultrasonography, 76 pregnant cows were selected, 22, 15, 22, and 17, respectively, from farms 1, 2, 3, and 4.
View Article and Find Full Text PDFThis study aimed to determine the prevalence of gastrointestinal and renal helminths from naturally infected Zenaida auriculata captured in Londrina, Paraná State. Two hundred and one Eared doves were trapped and the gastrointestinal and renal helminths were collected and identified according to morphological structures. One hundred and sixteen (57.
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