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Objective
To assess the effectiveness of controlled‐release devices (CRDs) for providing zinc and for estimating faecal output in alpacas and sheep at pasture.
Methods
The study groups of 10 alpacas and 10 sheep at pasture were paired within species and allocated at random to receive by mouth either one CRD containing chromium sesquioxide designed to function for at least 21 days or two CRDs, one...
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