Metabolizable energy in corn is greater than in hybrid rye when fed to gestating sows, but exogenous enzymes did not increase energy digestibility

The metabolizable energy (ME) in corn was greater (P < 0.05) than in hybrid rye when fed to sows in mid-gestation, although the difference between the two grains was less than the difference previously observed in growing pigs. An exogenous enzyme mixture did not increase apparent total tract digestibility of dry matter or gross energy in corn or hybrid rye fed to gestating sows. Likewise, digestible energy and ME in corn and hybrid rye were not increased by the enzymes.