Feijão partido extrusado na alimentação de leitões de (15 a 30 kg de peso vivo)

Abstract

The aim of the present study was to determine the nutritional value of extruded split bean (ESB) and the effects of its inclusion in increasing levels in feed on the performance of pigs ranging from 15 to 30 kg live weight. Two experiments were carried out, one regarding digestibility and another evaluating performance. In Experiment I, a total digestibility assay was performed with 20 barrows of a commercial lineage with initial mean weight of 22.0 kg, individually distributed in metabolism cages, in a completely randomized design with five treatments, four replicates and one animal per experimental unit. The extruded split bean replaced the reference feed at 7.5, 15.0, 22.5 and 30.0%. The digestibility coefficients of DM, OM, CP, DE and DM were not significantly different between the evaluated ESB levels (P> 0.05). The DE and DM content of the ESB were 3,152.2 and 3,077.6 kcal/kg, respectively. In Experiment II, 60 high genetic potential commercial piglets were used, half barrows and half gilts, with 15 kg of initial mean weight and 30 kg of final mean weight, distributed in a completely randomized experimental design with five increasing ESB inclusion levels (0, 7.5, 15, 22.5 and 30%), six replicates and two piglets per experimental unit. A regression analysis, considering the control feed, without bean addition, indicated a linear decrease (P <0.05) of the bean inclusion levels in FW, ADWG and ADFC. FC was not affected (P> 0.05) by bean inclusion at increasing levels of extruded bean. No significant difference (P> 0.05) in performance was observed between inclusion levels. The extruded split bean presented good energy value (3,078 Kcal ME/kg) and its inclusion in the rations, regardless of the evaluated levels, caused a loss in performance in piglets ranging from 15 to 30 kg of live weight