Urolithiasis In Ruminants/Camelids Flashcards
Nidus + precipitation of materials =
Urolith
Precipitation of minerals results from:
Concentrated urine
5 things that can act as a nidus for stone formation:
Debris, casts, mucoprotein, cells, bacteria
What are the biggest 4 predisposing factors for Urolithiasis in camelids/ruminants?
- Being male
- Inappropriate Ca:P
- Poor water management
- Weather
What 2 things can can cause an inappropriate Ca:P in camelids/ruminants?
- High phosphorus diet (to much grain + concentrated pellets)
- High calcium diet (alfalfa hay!)
How does poor water management contribute to urolithiasis?
Animals don’t want to drink nasty H2O
Need to make sure clean fresh water is available
Lack of H2O = making more concentrated urine to reserve water
How does weather contribute as a predisposing factor to urolithiasis?
Cold weather = frozen water
No water = body makes more concentrated urine to save water
More concentrated urine = precipitation of minerals + Urolith formation
What are 3 other important predisposing factors for urolithiasis in ruminants/camelids?
Age
Breed
Geography
How does being male predispose to urolithiasis formation in ruminants/camelids?
Males have longer, narrower urethra
How does age relate to Urolith formation?
Testosterone influence causes a wider urethra
(Young, in-tact males)
Young animals are also less likely to develop calcium carbonate stones because those crystals take a long time to form
What breed are more predisposed to forming stones?
Breeds of African descent
(Boer, Pygmy, Nigerian Dwarf)
How is geography tied to Urolith formation?
Silicate and oxalate stones are uncommon in Ohio and more common out west
Normal ruminant on a normal balanced diet will have ______ salivary phosphate excretion
and _____ urinary phosphate excretion
Increased salivary excretion
Decreased urinary excretion
A ruminant on a high phosphorus diet will have:
______ salivary phosphorus excretion
_______ urinary phosphorus excretion
Decreased
Increased
Normal ruminant urine pH is _____
Alkaline
(7.2-8)
Normal USG for ruminants is:
1.015, 1.035