Inclusão de feno de kudzú tropical na dieta de ovinos

Abstract

The feed-lot trial was carried the main goal was the evaluation of liveweight gain made by 5 months old male lambs of St Ines breed receiving diets with three levels of concentrate substitution by Puero hay. The experiment lasted for 55 days with 15 days of adaptation period. The concentrate was made out 50% of wheat bran 35% of ground corn and 15% of soybean meal. The Statistical Design was Completely Random with five replications and three treatments: Treatment one 0%, treatment two 50% and treatment three 100% of hay. The animals were kept in three pens (five lambs in each one). They were feed daily at 8:00 h and had their movements individually restrained during feeding time. Feeding and refused were weighed daily, samples were collected and sent for bromatological analysis (DM, CP, NDF, ADF, Hcel, Cel, Lig and Ashes). The performance was evaluated through daily consumption and daily liveweigth gain. The results showed significant differences (P<0,05) between T1 and T3 (0 and 100% of substitution, with 194,5 and 74,2 g/day, respectively). T2 (50% of substitution with 135,5 g/day of liveweigth gain was not significantly different either from T1 and T3. The concentrate substitution is feasible and brought a noticeable reduction on feeding costs, since the net profits were of R$110,00 R$101,90 and R$47,75, for T1, T2 and T3, respectively.