Tolerancia a diferentes factores antinutritivos en lechones alimentados con guisantes de invierno (Pisum sativum) y alberjón (Vicia narbonensis) en la fase estárter

Two trials were conducted to evaluate the effect of diets with different levels of anti-nutritional factors: trypsin (TIU) and chymotrypsin (CIU) inhibitors units of peas and γGlutamyl-S-Ethenyl-Cysteine (GEC) of narbon vetch, in productive performance of pigs from 40 to 61 days of age. 192 barrows were used in each test, Duroc hybrid x (Large White x Landrace), with 11.23 and 11.55 kg body weight respectively, and the same experimental design: four treatments and eight replicates with six piglets in each case. In trial 1 treatments were: Control: soybean meal 47 and soybean extruded (0.97 TIU-1.94 CIU/mg feed); P-CAR: soybean extruded and pea Cartouche (1.62 TIU-3.16 CIU/mg feed); P-ICE: soybean extruded and pea Iceberg (3.09 TIU-4.95 CIU/mg feed); P-LUN: soybean extruded and pea Luna (3.19 TIU-5.56 CIU/mg feed). The piglets of P-CAR treatment grew significantly faster than the others, with the same intake and feed conversion. No significant differences between Control, P-ICE and P-LUN. In trial 2 the feedstuff had different levels of narbon vetch: 0%, 5%, 15% and 25%, and consequently of γGlutamyl-S-Ethenyl-Cysteine (1.52% of the grain). The piglets that consumed the treatment of 5% had higher intake and growth, and the same conversion that piglets feeding with the treatment of 0%. The performance worsened significantly with increasing 15%. We conclude that piglets in starter period maintain or improve the performance with intake of proteases inhibitors in feedstuff that exceed 3.28 (TIU) and 2.86 (CIU) times those of a control diet, and that the inclusion of 5% of narbon vetch in feedstuff increases feed intake and growth