Like I said earlier, BSE ("mad cow disease") and it's human form CJD, come from ingesting animal proteins already infected with BSE. It is not heritable or genetically transmitted. These specific proteins, called prions, are found only in the brain and upper regions of the spinal chord of affected animals, not in the muscle tissue that is normally consumed, nor even in the other organs sometime consumed (not that I'd advocate eating any part of an affected animal). Incidently, it's never been found in a bovine less than 30 months old.
Alot of people still seem to have this sci fi image of cloning, where the mad scientist straps someone down on a table and points some mysterious ray at them and the other end of the machine spits out an army of clones of identical age, size, and appearance who act and think exactly like the original... It's actually a matter of isolating an individuals dna, placing it in an embryo that has been emptied of it's own dna, placing that embryo in a surrogate mother, and allowing it to proceed on it's own. The resulting animals will have the same dna (like identical twins), and will obviously be very similiar in appearance to the original and one another, but will likely vary somewhat in appearance due to differences in enviroment, nutrition, etc... It's science, not magic...