Bovine Diarrhea - NAVLE Review #2
Most common differentials for BOVINE Diarrhea:
- E. coli (Enterotoxigenic): first 3 days of life; diarrhea & septicemia
- Salmonella: 5 -14 day old calves; S. dublin = shedders for life; diarrhea, pneumonia, & septicemia
- Clostridium perfringes type C
- Rotavirus: 1 - 30 days of age
- Coronavirus: > 5 days of age
- Bovine Viral Diarrhea Virus (BVD) (6-24 months): mild form to highly fatal Mucosal Disease form. PI’s formed @ 2-4 months of gestation.
- Cryptosporidium parvum: 5-7 days of age
- Eimeria (coccidiosis): 7 days - 4 to 6 months
- Ostertagiasis: Type 1: L3 larva, high morbidity/ low mortality. Type 2 : yearlings housed after first grazing season. Development of L4, low morbidity/high mortality.
- Mycobacterium avium subp. paratuberculosis (Johne’s Disease): Chronic diarrhea and wasting in adult cattle
- Salmonella (S. typhimurium, S. dublin)
- Winter Dysentery (Corona Virus) - highly contagious, in housed diary cows; explosive diarrhea, high morbidity/low mortality.