Haemolysis sheep

What are some causes of haemolysis due to toxin ingestion?

Sulphur toxins (onions), nitrites/nitrates, copper.

What clinical signs indicate chronic copper toxicity?

Anorexia, depression, weakness, diarrhea, abdominal pain, jaundice of sclera and skin, black urine.

What happens when the liver's capacity for copper storage is exceeded?

Sudden release of copper into circulation causes liver damage, RBC destruction, and jaundice.

What are some post-mortem exam findings in chronic copper toxicity?

Jaundice of sclera and skin, black urine, bronze liver, shiny/metallic kidneys.

What is the treatment for chronic copper toxicity?

Blood transfusion or fluid therapy to support kidneys.

What are the clinical signs of acute copper toxicity?

Recumbent or dead.

What can cause acute copper toxicity in animals?

Oversupplementation of copper in feed.

What causes water toxicity related to sodium ingestion?

Normal water intake but excess sodium ingestion, or inadequate water intake with normal sodium intake.

What are some clinical signs of water toxicity?

Neurological signs (dumb, convulsions, dead), GI signs (rumen stasis, diarrhea), hyperthermia, tachycardia, nasal discharge.

What is a treatment strategy for water toxicity?

Restrict water intake, IV dexamethasone to reduce cerebral edema, and furosemide to improve kidney function.

What preventative measures can be taken to avoid water toxicity?

Maintain fresh, clean water intake and use oral electrolyte solutions where appropriate.

What can IV injection of hyper/hypotonic solutions cause in relation to RBCs?

It can cause RBC lysis.

What type of clinical signs are associated with chronic copper toxicity?

Lethargy, jaundice, vomiting, and dark urine.

Identify one method of diagnosing a case of chronic copper toxicity.

Post-mortem examination focused on liver and kidney signs.

What is the primary source of water toxicity in livestock?

Excess sodium or inadequate water intake.

What is a potential outcome of water toxicity when untreated?

Severe neurological impairment or death.

Why is treatment of chronic copper toxicity considered tricky?

Because the animal may be in kidney failure.

What is one possible effect of copper toxins on red blood cells?

Destruction of red blood cells leading to hemolysis.

How can water toxicity lead to cerebral edema?

Rapid influx of water to the brain can cause swelling.

What are the effects of hypertonic oral electrolytes related to water toxicity?

They can exacerbate water retention and cause edema.

What clinical sign indicates a breakdown of hepatic function during copper toxicity?

Jaundice.

What is the role of furosemide in treating water toxicity?

It helps reduce cerebral edema and improve kidney function.

What substance used in food can lead to increased copper levels in animals?

Oversupplementation in feed.

What are the gastrointestinal signs that may appear due to water toxicity?

Rumen stasis and diarrhea.

What happens to the kidneys in chronic copper toxicity?

They may be damaged and show signs of failure.

What should be monitored to help prevent water toxicity in livestock?

Water intake quality and quantity.

What happens to RBCs when they're exposed to bacterial toxins?

They may undergo hemolysis.

What is the significance of dark urine in chronic copper toxicity?

It indicates hemoglobinuria due to RBC destruction.

What can the presence of black urine indicate in animals?

Possible copper toxicity or severe hemolysis.

What other clinical signs may accompany jaundice in cases of liver damage?

Depression and weakness.

What can excessive water intake lead to in the context of sodium toxicity?

Potential fatal swelling of the brain.

What is a sign of liver damage due to copper release?

Bronze liver appearance.

What advice might be given to prevent copper toxicity in animal feed?

Careful monitoring and regulation of copper levels.