Our results for percentage hen-day production agree
with those of Cantor et al. (2000) and Patton (2000) who
reported no difference in percentage hen-day production
when hens were fed a basal diet supplemented with 0 or
0.30 ppm of SS or SY. However, our results disagree with
those of Cantor and Scott (1974) who reported an increase
in percentage hen-day production for hens fed 0.10 ppm
of SM relative to no supplementation, with percentage
hen-day production of hens fed SS at 0.10 ppm intermediate
between the two