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Livestock & Forage
Copper poisoning in weaned calves
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<blockquote data-quote="Sid" data-source="post: 6651463" data-attributes="member: 574"><p>We have found an issue within calves of high levels of copper in the livers. Its causing calves to get to around 6 to 7 months of age and show symptoms akin to copper deficiency. </p><p>The calves pre weaning at 12 weeks look as described by our vet "among the best looking calves they have seen". </p><p>We are feeding 3 litres twice a day for 6 weeks, 1 litre twice a day for 3 weeks then a litre once a day. They are eating over 2 kg of concentrate at weaning and on haylage.</p><p>Post weaning the calves then are still on 3 kg of the 16% rearer with free access to haylage.</p><p></p><p>We have tried increasing the conc and changing the forages.</p><p></p><p>We have tested the milk, forage water and waiting on the concentrates results. ALL so far low in copper BUT PM's done of the calves we have lost have show copper at 10800umol/kg DM with a standard range from 314 to 7850.. Colbalt is at 0.302 mg/kg DM with ref range of >0.06.</p><p></p><p>Has anyone seen issues like this before? There must be an antagonist somewhere in the feeding causing these calves to store massive amount of copper seemingly out of thin air?</p><p></p><p>We have full analysis of water milk and forages.</p><p></p><p>TIA </p><p></p><p>Sid</p></blockquote><p></p>
[QUOTE="Sid, post: 6651463, member: 574"] We have found an issue within calves of high levels of copper in the livers. Its causing calves to get to around 6 to 7 months of age and show symptoms akin to copper deficiency. The calves pre weaning at 12 weeks look as described by our vet "among the best looking calves they have seen". We are feeding 3 litres twice a day for 6 weeks, 1 litre twice a day for 3 weeks then a litre once a day. They are eating over 2 kg of concentrate at weaning and on haylage. Post weaning the calves then are still on 3 kg of the 16% rearer with free access to haylage. We have tried increasing the conc and changing the forages. We have tested the milk, forage water and waiting on the concentrates results. ALL so far low in copper BUT PM's done of the calves we have lost have show copper at 10800umol/kg DM with a standard range from 314 to 7850.. Colbalt is at 0.302 mg/kg DM with ref range of >0.06. Has anyone seen issues like this before? There must be an antagonist somewhere in the feeding causing these calves to store massive amount of copper seemingly out of thin air? We have full analysis of water milk and forages. TIA Sid [/QUOTE]
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Copper poisoning in weaned calves
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