Based on the results of some commercial feed pellets, the
following conclusions were drawn (Table 1): the Ligno tester is
more destructive than the tumbling can with two 3⁄4 -in.
hexagonal nuts, and the Ligno tester nearly matches the
destructive force of the Holmen tester. Winowiski [23]
concluded that the Ligno tester showed more sensitivity to
factors (e.g., added binder or fat) that influence pellet durability
than other durability testing methods. McEllhiney [30]
reported that durability values obtained from the Holmen
tester for a cycle time of 30 s were approximately equal to the
durability values obtained from the tumbling can method
with a cycle time of 10 min. Temmerman et al. [31] observed
no clear correlation between the durability values obtained by
the tumbling can method and the Ligno tester. They advised
not to compare the durability values from these two methods.
In addition, they found that the tumbling can method
produced the most repeatable and reproducible durability
results than the Ligno tester.