We used a total of 11,653 pigs to examine the influence of a lysine phase-feeding regimen on growth performance and carcass
characteristics in finishing pigs. We found
that the lysine regimen did not affect ADG.
Also, the low-lysine regimen was adequate
for maximizing growth performance and carcass characteristics of barrows. However,
the low-lysine regimen was inadequate to
optimize feed efficiency in gilts. Further
analysis indicated that the largest differences in feed efficiency were for the 115 to 160 lb period in gilts. Later in the growth period, feed efficiency of gilts was similar across dietary lysine regimens.
