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1 December 2011 Neospora caninum Is Associated With Abortion In Algerian Cattle
Farida Ghalmi, Bernard China, Rachid Kaidi, Bertrand Losson
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Abstract

Neospora caninum is a major cause of abortion in cattle worldwide. However, little information is available for Algeria. Accordingly, 799 cattle from 87 farms in the north and northeast of Algeria were enrolled in a seroepidemiological survey. An indirect fluorescence antibody test (IFAT) revealed a seroprevalence of 19.6%. The animals were divided into 3 groups according to their breed: imported European cattle, local breeds, and crossed animals (European × local). Seroprevalences were 16.0%, 34.3%, and 18.6% in groups 1, 2, and 3, respectively. A case control study was performed to investigate the link between global seropositivity to N. caninum and abortion risk in those cattle farms. There was a significant (P < 0.01) association between the seroprevalence against N. caninum and the occurrence of abortion in those farms (odds ratio [OR]  =  12.03). This was also observed at the individual level (OR  =  2.79). The analysis of results according to the breed revealed a significant association between seroprevalence and abortion in groups 1 and 3, but not for group 2, despite the fact that the highest seroprevalence was observed in group 2. Cerebral tissues from 5 aborted fetuses were available for histology and polymerase chain reaction (PCR). One sample was found positive both by histology and by PCR, 2 samples were positive by PCR only, and 2 samples were negative in both tests.

American Society of Parasitologists
Farida Ghalmi, Bernard China, Rachid Kaidi, and Bertrand Losson "Neospora caninum Is Associated With Abortion In Algerian Cattle," Journal of Parasitology 97(6), 1121-1124, (1 December 2011). https://doi.org/10.1645/GE-2861.1
Received: 15 May 2011; Accepted: 1 July 2011; Published: 1 December 2011
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