Serological survey of etiological agents associated with abortion

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Serological survey of etiological agents associated with abortion in two Algerian dairy cattle breeding farms
A. Dechicha, S. Gharbi, S. Kebbal, G. Chatagnon, D. Tainturier, R. Ouzrout and D.Guetarni
INTRODUCTION
Abortion of infectious origin is considered a significant
pathology given the considerable economic losses due to
loss of production income (e.g. loss of calf and milk), on
the one hand, and loss of breeding stock due to
compulsory slaughters imposed in cases of suspected
brucellosis on the other. For example according to Je-In
and Ill-Hwa (2007), the cost of abortion in Korea is
estimated at $2,333/cow ; while, Reitt et al. (2007) report
that with an abortion rate of 2 to 4% annually in
Switzerland, the loss is estimated as being between 22.4
and 44.8 million Swiss francs (1 CHF = 1USD). In
Algeria, the amount of compensation for cattle and goats
slaughtered because of brucellosis between 2002 and
2004 was estimated at 83 million Algerian dinars (1 DZD= 0.139 USD).
Infectious abortion is caused by many bacteria, viruses,
protozoa and fungi, and the diagnosis of the exact cause
is not easy in all cases. According to Anderson (2007)
and Kradel (1978), the etiology is identified in less than
half of the cases submitted to laboratories. Serology does
not allow a precise diagnosis although it does determine
whether there has been exposure to an abortive agent or not.
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