Semen variables of sheep (Ovis aries) experimentally infected with Toxoplasma gondii
| Autor: | Alvimar José da Costa, J.D.F. Rodrigues, Welber Daniel Zanetti Lopes, Gustavo Henrique Nogueira Costa, Vando Edésio Soares, Fernando Andrade Souza, G.S. Silva |
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| Rok vydání: | 2008 |
| Předmět: |
Male
Antibodies Protozoan Sheep Diseases Semen Parasitemia Serology Body Temperature Andrology Endocrinology Food Animals Heart Rate medicine Animals Ovis Sperm motility Sheep biology Sperm Count Respiration Toxoplasma gondii General Medicine medicine.disease biology.organism_classification Sperm Spermatozoa Toxoplasmosis Toxoplasmosis Animal Immunology Sperm Motility Animal Science and Zoology Toxoplasma |
| Zdroj: | Animal reproduction science. 111(2-4) |
| ISSN: | 1873-2232 |
| Popis: | The influence of Toxoplasma gondii on semen variables and sperm morphology of sheep was evaluated in eight reproductive males distributed into three experimental groups: GI, three sheep inoculated with 2.0x10(5) of P strain oocytes; GII, three sheep infected with 1.0x10(6) of RH strain tachyzoites and; GIII two control sheep. Clinical (rectal temperature, cardiac and respiratory frequencies), parasite and serology exams (IIF) were realized. Sperm variables (volume, motility, vigor and concentration) and semen morphology for each sheep were also evaluated. Thus, semen and blood collections were assessed on post-inoculation days (PIDs)-1,3,5,7,11,14 and weekly thereafter up to PID 70. Clinical alterations were observed (hypothermia and anorexia) in infected sheep from groups GI and GII. Parasitic outbreaks were detected in five sheep. All the infected sheep produced antibodies against T. gondii from PID 5 onwards, reaching a peak of 4096 and 8192 for group GI and GII sheep, respectively. Differences (P0.05) were observed regarding the ejaculate volume between the inoculated groups (oocytes and tachyzoites) and control. Even though experimental toxoplasmic infection resulted in clinical symptomology in the inoculated sheep, the minimal alterations in sperm pathologies could not be directly attributed to T. gondii. |
| Databáze: | OpenAIRE |
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