Effects of Sodium Monensin on Copper Metabolism of Brazilian Santa Inês Sheep Submitted to Different Dietary Copper

Copper (Cu) is an essential microelement for animals. However, sheep are particularly susceptible to Cu intoxication, a deadly disease reported worldwide. The risk of developing this poisoning is higher in vulnerable breeds and in intensively managed lambs or milk sheep. Two types of Cu intoxication can occur depending on the chronic or acute exposure to Cu. In chronic Cu poisoning (CCP), the most common form, Cu is accumulated in the liver during a subclinical period. A low intake of Cu antagonists (molybdenum, sulphur, iron, or zinc) favours Cu accumulation. The sudden release of Cu into the blood causes acute haemolysis with anaemia, haemoglobinuria, jaundice and death within 1–2 days. Acute Cu poisoning is related to the accidental administration or ingestion of toxic amounts of Cu. Acute oral exposure to Cu causes severe gastroenteritis, shock and death. Collapse and death occur shortly after parenteral administration. The diagnosis is based on history, clinical, gross pathological, histological and toxicological findings. Treatment of sheep with severe clinical signs often has poor success but is very effective during the Cu accumulation phase. Different therapies, based on either chelating agents or Cu antagonists, have been used to treat and prevent CCP.

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Copper Poisoning, a Deadly Hazard for Sheep

Borobia

Villanueva‐Saz

Ruíz

et al. 2022

Animals

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Effects of Sodium Monensin on Copper Metabolism of Brazilian Santa Inês Sheep Submitted to Different Dietary Copper

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Copper Poisoning, a Deadly Hazard for Sheep

Copper Poisoning, a Deadly Hazard for Sheep

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