Digestibilidade nutricional e energética do resíduo de goiaba e do feno de Moringa oleífera para suínos em crescimento

Abstract

The objective of this work was to characterize nutritionally the guava wastes and Moringa oleifera Lam. in growing pigs. A total digestibility assay was performed with 18 castrated male pigs, with a mean initial weight of 33.16 ± 0.69 kg, distributed in a completely randomized design with 3 treatments (diet control, 20% Guava wastes, and control diet substituted in 20% of leaf meal and petioles of Moringa oleifera) with 6 replicates per treatment. The guava wastes expressed the following nutritional values: 5181 kcal/kg of gross energy (EB); 1740 kcal/kg of digestible energy (ED); 1708 kcal/kg apparent metabolizable energy (EMA); the metabolizable energy corrected for nitrogen balance (EMAn) was 1661 kcal/kg; the dry matter content (MS) was 908.3 g kg-1 as fed (MN); crude protein (PB) consisted of 103.5 g kg-1 of MS. While in the bromatological composition of Moringa oleifera, 4632 kcal/kg for EB were observed; 1472 kcal/kg for ED, 1419 kcal/kg for EMA, 1360 kcal/kg for EMAn; 881.6 g kg-1 as fed for MS; and 217.8 g kg-1 from MS to PB. The guava wastes and moringa presented high values of neutral detergent fiber (FDN), acid detergent fiber (lignin) and lignin (LIG), reducing the digestibility coefficients of the other nutrients. The value of total excreted nitrogen was proportional to the nitrogen intake (NI) in the diets by the animals. The animals fed with guava wastes showed higher net protein utilization (ULP) compared to those fed the other diets. It is concluded that the values of the nutritional composition of guava wastes and moringa are satisfactory for use in diets for growing pigs.