Neospora caninum hos köttdjur i Sverige
Neospora caninum is an intracellular parasite that was first recognized in dogs in 1984. The parasite is now one of the most commonly diagnosed infectious causes of abortion in cattle word wide. N. caninum is transmitted to cattle in two ways. They may be infected from eating food contaminated wi...
| Autor principal: | |
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| Formato: | Otro |
| Lenguaje: | sueco sueco |
| Publicado: |
2008
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| Materias: | |
| Acceso en línea: | https://stud.epsilon.slu.se/11755/ |
| _version_ | 1855571932222586880 |
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| author | Westin, Lena |
| author_browse | Westin, Lena |
| author_facet | Westin, Lena |
| author_sort | Westin, Lena |
| collection | Epsilon Archive for Student Projects |
| description | Neospora caninum is an intracellular parasite that was first recognized in dogs in
1984. The parasite is now one of the most commonly diagnosed infectious causes
of abortion in cattle word wide. N. caninum is transmitted to cattle in two ways.
They may be infected from eating food contaminated with oocysts from a
definitive host or they may be infected in utero from an infected mother. The
infection is transmitted efficiently from cow to her offspring and this can occur
for generations. An infected fetus may be aborted but it is more common that the
calf is born clinically healthy but chronically infected with N. caninum. Once the
animal is infected it remains infected for life and the presence of antibodies
against the parasite indicates infection.
In the year 2000 Swedish dairy cows were tested for antibodies against N.
caninum and this resulted in an estimated seroprevalence of 2% in dairy cows. No
such screening has been performed in beef cattle in the country. The purpose of
this study was to test beef cattle in different parts of Sweden to investigate the
seroprevalence of N. caninum antibodies in beef cattle.
Beef cattle sera collected within the bovine virus diarrhoea control program
between November 2006 and May 2007 were analysed for presence of N.
caninum specific antibodies by ELISA. Thirtyfive of 986 (3.6%) animals had
antibodies to the parasite. The screening showed that N. caninum is well spread in
Sweden though the prevalence appears to be low. |
| format | Otro |
| id | RepoSLU11755 |
| institution | Swedish University of Agricultural Sciences |
| language | Swedish swe |
| publishDate | 2008 |
| publishDateSort | 2008 |
| record_format | eprints |
| spelling | RepoSLU117552017-10-17T11:51:58Z https://stud.epsilon.slu.se/11755/ Neospora caninum hos köttdjur i Sverige Westin, Lena Animal diseases Neospora caninum is an intracellular parasite that was first recognized in dogs in 1984. The parasite is now one of the most commonly diagnosed infectious causes of abortion in cattle word wide. N. caninum is transmitted to cattle in two ways. They may be infected from eating food contaminated with oocysts from a definitive host or they may be infected in utero from an infected mother. The infection is transmitted efficiently from cow to her offspring and this can occur for generations. An infected fetus may be aborted but it is more common that the calf is born clinically healthy but chronically infected with N. caninum. Once the animal is infected it remains infected for life and the presence of antibodies against the parasite indicates infection. In the year 2000 Swedish dairy cows were tested for antibodies against N. caninum and this resulted in an estimated seroprevalence of 2% in dairy cows. No such screening has been performed in beef cattle in the country. The purpose of this study was to test beef cattle in different parts of Sweden to investigate the seroprevalence of N. caninum antibodies in beef cattle. Beef cattle sera collected within the bovine virus diarrhoea control program between November 2006 and May 2007 were analysed for presence of N. caninum specific antibodies by ELISA. Thirtyfive of 986 (3.6%) animals had antibodies to the parasite. The screening showed that N. caninum is well spread in Sweden though the prevalence appears to be low. Neospora caninum är en intracellular parasit som upptäcktes första gången hos hund 1984. Parasiten är idag en av de vanligaste diagnosticerade orsakerna till abort hos nötkreatur i hela världen. N. caninum smittar nötkreatur på två sätt. Djuret kan bli infekterat genom att äta foder som kontaminerats med oocystor från en huvudvärd eller så infekteras de in utero från en infekterad moder. Infektionen överförs effektivt från en ko till hennes avkomma och detta kan fortgå i flera generationer. Ett infekterat foster kan aborteras men det är vanligare att kalven föds kliniskt frisk med kroniskt infekterad med N. caninum. När ett djur en gång blivit infekterat så förblir det infekterat livslångt och därmed indikerar närvaro av antikroppar mot parasiten infektion. År 2000 testades svenska mjölkkor för antikroppar mot N. caninum vilket resulterade in en uppskattad seroprevalens på 2 % hos mjölkkor. Ingen liknande screening har utförts hos köttdjur i landet. Syftet med detta examensarbete var att testa köttdjur från olika delar av Sverige för att undersöka seroprevalensen av N. caninum antikroppar hos köttdjur i landet. Serumprover som samlats för provtagning inom BVDV programmet mellan november 2006 och maj 2007 analyserades för närvaro av specifika antikroppar mot N. caninum med hjälp av ELISA. 35 av 986 (3,6 %) av djuren hade antikroppar mot parasiten. Screeningen indikerade att N. caninum är väl spridd i Sverige men prevalensen verkar vara låg. 2008-02-07 Other NonPeerReviewed application/pdf sv https://stud.epsilon.slu.se/11755/1/westin_l_171017.pdf Westin, Lena, 2007. Neospora caninum hos köttdjur i Sverige. UNSPECIFIED, Uppsala. Uppsala: (VH) > Dept. of Clinical Sciences (until 231231) <https://stud.epsilon.slu.se/view/divisions/OID-715.html> urn:nbn:se:slu:epsilon-s-7934 swe |
| spellingShingle | Animal diseases Westin, Lena Neospora caninum hos köttdjur i Sverige |
| title | Neospora caninum hos köttdjur i Sverige |
| title_full | Neospora caninum hos köttdjur i Sverige |
| title_fullStr | Neospora caninum hos köttdjur i Sverige |
| title_full_unstemmed | Neospora caninum hos köttdjur i Sverige |
| title_short | Neospora caninum hos köttdjur i Sverige |
| title_sort | neospora caninum hos köttdjur i sverige |
| topic | Animal diseases |
| url | https://stud.epsilon.slu.se/11755/ https://stud.epsilon.slu.se/11755/ |