The chemical composition; the values of digestible (DE) and metabolizable (ME) energy; the coefficients of digestibility of dry matter (CDDM), crude protein (CDCP), mineral matter (CDMM), ether extract (CDEE), crude fiber (CDFB), crude energy (CDCE), and non nitrogen extractive (CDENN); as well as the coefficient of metabolizability of gross energy (CMGE) of high moisture corn grain silage (HMCGS) were evaluated. Twenty swines, averaging 28.89±4.9kg of live weight, randomly allotted in metabolism cages were used. HMCGS with different particle sizes 513, 587, 717, and 1363µm, replacing 30% of basal diet was used. CDDM, CDCP, CDEE, CDMM, and CDENN decreased as the particle size of the HMCGS increased. CDGE and CMGE also decreased from 89.0 to 94.3% and from 82.9 to 88.5%, respectively. The energy values varied from 4,439 to 4,493kcal of GE/kg, 3,999 to 4,194kcal DE/kg, and 3,729 to 3,939kcal ME/kg, in dry matter basis. CDGE and CMGE decreased until the medium geometric diameters of 754 and 831µm, respectively, and the digestibility of the nutrients of the HMCGS was negatively influenced as the medium geometric diameter of the particles increased.
swine; corn grain; silage; digestibility; chemical composition; geometric diameter
