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2013 | 58 | 4 |
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Kinetics of anti-Neospora antibodies during the period of two consecutive pregnancies in chronically infected dairy cows

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The course of anti-Neospora antibody kinetics during two consecutive pregnancies has been evaluated in five chronically infected dairy cows. The blood samples of cows were collected monthly. Anti-Neospora antibodies in blood sera were detected by indirect ELISA (ID-VET, France). During whole period of the study cows remained seropositive; with S/P% values (iELISA) ranging from 94 to 214%. The antibody kinetics determined by iELISA showed a significant increase (P<0.0059) of specific IgG antibodies in the third trimester of both pregnancies. The monitored cows gave birth to 10 healthy calves (4 steers and 6 heifers). To confirm the occurrence of vertical transmission of Neospora from mothers to offspring in the herd, dam-daughter serology was performed. Anti-Neospora antibodies was found in 4 from 6 heifers (>6 months old). Study presents original data reporting on the very similar persistent pattern of anti-Neospora antibody levels during the third trimester of pregnancies in all five dairies. Based on the high seropositivity of female offspring, the reactivation of a latent infection of cows rather than a re-infection can be supposed.
Opis fizyczny
  • Institute of Parasitology of the Slovak Academy of Sciences, 04001 Kosice, Hlinkova 3, Slovak Republic
  • W. Stefanski Institute of Parasitology of the Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland
  • Institute of Parasitology of the Slovak Academy of Sciences, 04001 Kosice, Hlinkova 3, Slovak Republic
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