We are finishing up the processing of our first 2 home slaughtered yearling American Guinea Hogs. We noticed some black spots in and around the mammary glands. (Note these are 1yr gilts and have never farrowed a litter) From what I can find online, this condition appears to be melanosis uberis. A study on Nero Siciliano pigs indicates: Tyrosinase activation could take place in genetically predisposed swine after acorns are eaten, and this event could increase the biosynthesis and the anomalous storage of melanin. My pigs are also black, and were fattened in a wooded area that has a dense population of shagbark hickory and some oak.
I did not get good pics of mine, but these images are exactly what I have going on.
We pan fried a few chucks of trim that contained this can confirm taste and texture is what one would expect from a hunk of uncured unsalted pork belly. I fully intend to use the meat as is but has anyone else seen this before?