My copy of this book indicates that she uses canned pineapple (well drained)
and the recipe is as follows:
Ingredient              Small       Med         Large
Water                   1/4c        1/3c        1/2c
crushed pineapple       1/2c        3/4c        1 c
grated carrot           1/3c        1/2c        2/3c
marg/butter             1tbs        1 1/2 tbs   2tbs
vanilla extract         1/2 tsp     3/4tsp      1tsp
salt                    1/3 tsp     1/2 tsp     2/3 tsp
brown sugar             1 tbs       1 1/2tbs    2 tbs
oats                    1/2c        3/4c        1c
whole wheat flour       1/2c        3/4c        1c
bread flour             1c          1 1/2c      2c
yeast                   1tsp        1 1/2tsp    2tsp
Optional ingredients
chopped nuts            1/4c        1/3c        1/2c
raisins                 1/4c        1/3c        1/2c
I see no reason why the drained pineapple juice could not REPLACE the water
in the recipe, or be added to water to arrive at the proper amount of 
liquid.
[[Editor's note: the acidity of the juice will affect the yeast, so be 
prepared to experiment if you use it. (JRD)]]