Goat Sweating

[moonspinner]

Have not run across this one before. A goater pal has two goats, doe and wether who tend to sweat during winter. They also have a dandruffry coat. They are somewhat related. They receive outstanding care, the best diet and minerals along with added kelp.
She's wondering if this may be copper related.
Any thoughts?

[mygoat]

They cannot sweat. Is the barn closed up and/or poorly ventilated? Any other animals in the barn? Some barns 'sweat' with condensation, and I would bet that is what it is.