According to Google

In mink farming, nothing is wasted. The fat is rendered into mink oil that is used to protect and waterproof leather, as well as in the cosmetic industry and now sometimes to produce bio-fuels. The rest of the carcass, with the manure and soiled bedding (straw or shavings) is composted to produce organic fertilizers

Posted By: Captain Bligh, Nov 7, 13:20:03