Bovine-urinary pathology

Question 1

Lesions/dzs

Answer 1

1. Pyelonephritis
2. White spotted kidney dz, and other interstitial nephritis
3. tubular degeneration and necrosis
4. Cystitis
5. Urethral obstruction

Question 2

Radiating pyramidal inflammation

Answer 2

ascending infection

Question 3

Pyelonephritis most common cause

Answer 3

1. Corynebacterium renale

2. E. Coli

Question 4

White spotted kidney dz

Answer 4

Follows septicemic colibacillosis with residuum of interstitial nephritis

• salmonellosis also linked
• Similar lesions in mild forms lepto pomona, hardjo

Question 5

Acute tubular necrosis

Answer 5

Plant tox
1. Oak bud and acorn
2. Pigweek (amaranthus retroflexus)
3. Oxalate (rumex spp)
Abx: aminoglycosides
Heavy metals: lead, mercury, arsenic

Question 6

Pigweed

Answer 6

1. Toxicity most common cattle and pigs

2. Toxic principle unknown: nitrates, oxalates, phenolics implicated

Question 7

Pigweed postmortem lesions

Answer 7

1. Perirenal edema
2. Renal enlargement and pallor
3. Acute tubular necrosis (cortical swelling)

Question 8

Pigweed dx

Answer 8

1. Lesions
2. plants in digestive tract
3. plants on premises

Question 9

Oak bud acorn tox

Answer 9

1. Commonly effects cattle, sheep (horses less often)
2. Toxic component: gallotannins
   - hydrolyzed to tannic acid, gallic acid and pyrogallol

Question 10

Oak bud/acorn gross lesions

Answer 10

1. Perirenal edema
2. Renal swelling and perirenal edema
3. GI ulcerations
4. Hydrothorax and ascites
   Acute tubular necrosis