salmonella typhimurium

Bovine Diarrhea - NAVLE Review #2

Originally posted by braddstudio

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.

Originally posted by a-ginger-journey

Adult Cattle:

Bacterial:

  • Mycobacterium avium subp. paratuberculosis (Johne’s Disease): Chronic diarrhea and wasting in adult cattle 
  • Salmonella  (S. typhimuriumS. dublin)

Viral:

  • Winter Dysentery (Corona Virus) - highly contagious, in housed diary cows; explosive diarrhea, high morbidity/low mortality. 
Pig Diarrhea - NAVLE Review #1

Originally posted by diamondsonmyhead

Most common differentials for  PIG diarrhea: 

Piglet Diarrhea (Neonatal):

Bacterial causes:

  • E. coli ( Enterotoxigenic K88, K99, 987P, F41  ) : Colibacillosis - white scours; <4 days (Most common cause)
  • Clostridum perfringes Type C: hemorrhagic enteritis < 7 days
  • Clostridum perfringes Type A: creamy diarrhea - 1st week of life

Viral Causes:

  • Coronavirus (Transmissible Gastroenteritis): Variable; <2 wks = death
  • Rotavirus - 7 - 14 days

Parasitic:

  • Isosoprora suis (Coccidiosis): 4.5 - 5 days - watery- pasty diarrhea
  • Strongyloides ransomi (SI threadworm) - 10-14 day, hemorrhagic diarrhea, southern states

Weaned Pigs -  weaning @ 21 days 

Bacterial:

  • E. coli ( Enterotoxigenic F18, F4  ) : Colibacillosis 

Viral:

  • Rotavirus
  • Coronavirus (Enteric Transmissible Gastroenteritis) 

Originally posted by llamaenllamas


Grow/ Finishers

Bacterial:

  • Salmonella (S. choleraesuis, S. typhimurium) - watery “yellow” diarrhea; S. typhimurium = rectal strictures, S. cholerasesuis = pneumonia/ septicemia - Common in feeders/growers, can occur in all ages
  • Bracchyspira hydrodysenteriae - mucohemorrhagic colitis - common in feeders, can occur in all ages
  • Lawsonia intracellularis (Proliferative Enteritis) - hemorrhagic diarrhea

Parasitic 

  • Trichuris suis -  mucoid to mucohemorrhagic diarrhea

Misc.

  • Porcine Epidemic Diarrhea Virus (PEDV) : Coronavirus effects all ages of pigs with varying morbidity and moralities.