Bovine Diarrhea - NAVLE Review #2
Most common differentials for BOVINE Diarrhea:
Young Cattle:
Bacterial:
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
Viral:
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.
Parasitic:
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.
Adult Cattle:
Bacterial:
Mycobacterium avium subp. paratuberculosis (Johne’s Disease): Chronic diarrhea and wasting in adult cattle
Salmonella (S. typhimurium, S. dublin)
Viral:
Winter Dysentery (Corona Virus) - highly contagious, in housed diary cows; explosive diarrhea, high morbidity/low mortality.