Cows
Brucellosis
the eliminated from commercial herds in the Unites States. may be present in uterine discharges beginning 2 weeks before calving or abortion, and lasting 2 to 3 weeks thereafter. The primary sign is abortion.diagnosis of abortion requires isolation of the organism from fetal tissues or uterine discharge.
transmitted venereally and is highly contagious in equines. Taylorella equigenitalis is the causative organism
of contagious equine metritis (CEM)
Most important cause of abortion as well as the cause of respiratory disease, neonatal death, and neurologic disease in the mare. Transmission is by inhalation of infectious aerosols or by direct contact with infectious secretions or contaminated drinking water. Occurs transplacentally to fetuses by infected leukocytes, and abortion occurs within 120 days, with the majority occurring in 7 to 20 days.
EHV-1
characterized by generalized vascular necrosis and by abortion. Usually occurs as a mild and often unrecognized infection of the anterior respiratory tract. fever (39–41°C), leukopenia, a serous nasal discharge, conjunctivitis, lacrimation and purulent ocular discharge, keratitis, palpebral edema, photophobia, and skin rash, commonly on the neck. Abortion usually occurs within 7 to 10 days after the onset of maternal illness.
Equine viral arteritis (EVA)
trypanosomosis, transferred to the recipient during intercourse. swelling of the genitalia, cutaneous plaques, and neurological signs but severity varies with the virulence of the strain, the nutritional status of the horse, and stress factors.
Dourine