This study was conducted in order to evaluate the chemical composition, vitreousity endosperm and nutritional values of different hybrids of corn through of chemical analysis and a metabolism assay with growing pigs. The metabolism assay were conducted by utilizing 24 crossbred (LD x.LW) barrows with 35,6Kg+- 3,05Kg keept in metabolism cages . The experimental treatments were formed by six (6) diets formulated with hybrids of corn: "corn oil", corn QPM, corn-dent, semi-dent, and two corns-flints. The values obtained Vitreousity, Digestibility Coefficients of the Crude Protein, and Energy Digestible for corns high oil, QPM, dent, semi-dent, hard 1 and hard 2 were 78,5%; 71,7%; 57,2%; 68,2%; 75,9%; 82,8%; 80,14%; 82,35%; 69,71%; 76,98%; 75,61%; 3680, 3426; 3597; 3441; 3340 and 3469 Kcal/Kg, respectively. The data shown significant differences (P<0,005) for the values of vitreousity (P<0,005) among the corns studied. Corns varieties with hard texture show a higher vitreousity as compared with those semi-dent and corn dent varieties. There were significant differences in Digestibility Coefficients of Dry Matter, Digestibility Coefficients of Protein Crude and Energy Digestible among the corn varieties studied (P<0,05). The "corn oil" and the corn dent varieties shown higher digestibility values than others. The Nitrogen Retention showed significant differences (P<0,05) among the corns studied. The corns varieties dent, QPM and "corn oil" showed higher digestibility as compared with the semi-dent and corns-flints varieties. In conclusion the corn-dent, "corn oil"and corn QPM varieties showed better nutritional values than others varieties studied.
Metabolism assay; vitreous endosperm; pigs
