Multifocal hepatic necrosis in a bovine fetus

Multifocal hepatic necrosis in a bovine fetus
History:  Two aborted bovine fetuses were submitted.  One had been partially scavenged, the other was intact.   The herd was vaccinated on 10/10/08 with Bovishield Gold VL5 and Ultrabac 7.   There are 24 heifers in the herd and 6 have aborted at the same time.
Gross Lesions: None, the placenta was [...]

Blackleg in a herd of Steer- Clostridium chauvoei

History: A steer was found dead with no prior clinical signs. The farm had 12 animals die (of 550) over the past 10 days.
Gross Findings:
Subcutaneous and muscular emphysema throughout the animal. There was moderate to severe retroperitoneal and mediastinal edema. The hind-limb skeletal muscles had multiple dark red areas and were emphysematous. They [...]