Search

Background: Sugarcane silage (SCS) has often been characterized by large dry matter (DM) losses associated with reduction in soluble nutrients and increase in indigestible fiber. Objective: To evaluate the effect of including discarded fruits on the losses and nutritional value in SCS. Methods: A completely randomized design was used with five treatments and five replications. Silages were added with 15% (as-fed basis) papaya (Carica papaya) (SP), acerola (Malpighia glabra) (SA), banana (Musa sp.) (SB) or tomato (Solanum lycopersicum) (ST). The control treatment was composed only of SCS. Twenty-five (25-L) plastic buckets were used to make the experimental silos, which were opened on the 90th day after their closure. Data were analyzed by analysis of variance. Results: Gas losses and total DM losses were lower and DM recovery was higher in SB and SA than in the control (p0.05). However, there was treatment effect for lactic and acetic acids, ammonia nitrogen contents, lactic acid bacteria, and yeasts and mold counts (p0,05). Sin embargo, hubo efecto de tratamiento para los contenidos de ácidos láctico y acético, y nitrógeno amoniacal y recuento de bacterias ácido lácticas, levaduras y hongos (p0,05). Contudo, houve efeito de tratamento para os conteúdos de ácidos lático e acético, e nitrogênio amoniacal e contagens de bactérias láticas, e leveduras e fungos (p

The objective of the current research was to evaluate the fermentative characteristics of silage made with the upper third section of cassava (Manihot esculenta) plants with added condensed tannin levels of 0, 25, 50 and 75 g/kg dry matter (DM). The experimental design was a complete randomized design, with treatments arranged in a 4 × 7 factorial (tannin addition levels × days of ensiling). The loss of gas and the presence of moulds observed in the opening days had increased linearly. Fermentative characteristics were decreased by the addition of tannin. Acetic acid content showed a linear increase. Tannin levels had a quadratic effect on gas production at 28 days of ensiling. After 56 days, however, tannin levels had no significant effect on silage gas production. After 28 days of ensiling, the degradability of potentially degradable fraction ‘b’ demonstrated quadratic effect. The same occurred with the fractions ‘a’, ‘b’ which were undegradable after 56 days of ensiling. The addition of condensed tannin lengthened the fermentative stage and caused the silage to stabilize after 56 days of ensiling.