This makes for a pretty good case study on genetics. When you cross a purebred on another purebred, the results can be pretty consistent, almost cookie cutter at times. My sow had brothers that were almost just like her. When you cross two or more crossbreds, all sorts of things happen. No real consistency. I had two decidedly Tamworth featured pigs, (the little gilt being one) tall and slab sided. Two were guinea featured, like the red pig above, very fatty and short muzzled, three grew more like bluebutts, very commercial typed. If I wanted to start a breeding program, I would have to pick the phenotype I liked and breed like to like, selecting for that phenotype. Could take many generations for type to be set. But seeing as how they are all made of bacon, I could just breed some pigs together and eat the offspring, that works pretty good , too.
Sometimes people on here ask what happens when you cross X with Z, just thought I could illustrate a few possible combinations.
