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Copper deficiency in cows

Visited a farm in County Limerick yesterday on a pre breed reproductive scan. 90% of the cows were cycling although BCS was low. The client claimed that the cows had improved dramatically in the pst 3 weeks in terms  of Body Condition score. This would explain why so many cows were cycling. However, on examination of the cows, I noticed all of the cows had a swelling on the rump and the client informed me that it was associated with an injection of copper as he had to do some each year to try and prevent the extreme tinge associated with copper deficiency on the coats of the cows. However, this local  immune to the copper injection has shown to decrease fertility from previous experimental work completed by Professor Marie Boland & Associates in UCD. Injections of this form should be avoided at time of breeding.

Dr Dan Ryan

www.cows365.com 

 

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