There is increasing concern about a number of trace element supplements containing copper and which can be sold by anyone as they are classified AVM-GSL (Authorised veterinary medicine – general sales list.) There are now apparently several supplements available off the shelf which contain levels of copper and have the potential to lead to copper toxicity.
It is known that copper requirements and susceptibility to toxicity vary enormously between sheep breeds with some continental breeds particularly sensitive. The concern is that with no regulation and no requirement for advice before these products can be purchased and used by farmers, there is significant risk of inappropriate use and hence an increased risk of copper toxicity on a flock scale. There have already been cases of adverse reactions reported to the Veterinary Medicines Directorate (VMD).
The message is to read labels very carefully and be very wary of products containing copper unless there is a known copper deficiency issue in the flock.
Press release courtesy of NSA.