highly significantp ≤ 0.01
A highly significant effect of breed ( p ≤ 0.01) was observed for protein content of the lungs, liver (PUL < PL) and kidneys (PUL > PL), for collagen content of the kidneys (PUL < PL) and liver (PUL < PL), and for energy value ( p ≤ 0.01) of the heart (PUL > PL) and liver (PUL < PL).