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Bovine viral diarrhoea virus (BVDV) Is a major reproductive
pathogen in cattle population throughout the world. A significant
percentages of cattle of Iranian dairy farms have been detected to
be seropositive to BVDV. Recent field and experimental studies
have confirmed the negative impact of BVDV infection on the
early reproductive performance of cattle. In the past decade, much
progress have been achieved to explain the pathogenesis for low
fertility in cattle undergoing a transient infection with BVDV.
Disturbance in follicular development, ovulation and consequently
corpus luteum formation are the main adverse effects of BVDV
infection around the time of artificical insemination in cattle. This
paper focuses on recent advances in the understanding of the
pathogenesis of early reproductive loss associated with BVD virus
infection.