Light-microscopic
appearance of stratum
medium of dairy cow hoof.
The letters a or A (0 mg/d),
b or B (20 mg/d), and c or C
(40 mg/d) indicated the samples
taken at the beginning (day 0) or
end (day 60) of the study from
the same cattle, respectively.
Significant improvement in hoof
structure was observed,
compared to the control.