| Autor: |
Reif, Johannes, Renzhammer, René, Brunthaler, René, Weissenbacher-Lang, Christiane, Auer, Angelika, Kreutzmann, Heinrich, Fux, Robert, Ladinig, Andrea, Unterweger, Christine |
| Předmět: |
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| Zdroj: |
Acta Veterinaria Hungarica; Jun2022, Vol. 70 Issue 2, p149-155, 07p |
| Abstrakt: |
Infections of pigs with porcine circovirus type 2 (PCV2) can lead to various clinical conditions including reproductive disorders (PCV2-RD). In general, a transplacental infection of fetuses leads to mummification and stillbirth. So far, PCV2-RD has mainly been described in specific-pathogen-free (SPF) herds or farms with a high proportion of gilts. From December 2018 to February 2019, a high abundance of mummified fetuses (15.5%) was observed in two farrowing groups in an Austrian piglet-producing farm. PCV2 DNA was detected using qPCR in organs of all six investigated fetuses (2.07 × 108–1.09 × 1012 PCV2) genome equivalents/g tissue and via in situ hybridisation in organs from five fetuses, while histologic lesions were not observed in a single fetal heart. All isolates were sequenced and identified as PCV2d. After the implementation of a regular vaccination of all sows against PCV2, the abundance of mummified fetuses dropped to 3.5% in May 2019. In contrast to previous reports about PCV2-RD, this farm was neither an SPF herd nor a start-up herd with a high proportion of gilts. The implementation of regular PCV2 vaccination helped to reduce the abundance of mummified fetuses substantially. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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