<b>Chemical-bromatological composition and in vitro ruminal kinetics of sugar cane silage with maniçoba

Abstract

The objective this study was to evaluate the effect of maniçoba supplementation in sugar cane silage with respect to chemical-bromatological composition and the in vitro degradation kinetics of the silage. This experiment was conducted in a completely randomized design with four treatments (maniçoba levels: 0, 20, 30, and 40%) and six repetitions. Silage samples were analyzed for their chemical-bromatological composition, digestible energy, metabolizable energy, total digestible nutrients, in vitro gas production and degradability parameters. The silage with higher inclusion level had better bromatological composition (p &lt; 0.05) than the silage without maniçoba for CP, NDF, ADF and MM (6.49, 56.64, 38.66 and 4.52% versus 2.21, 70.96, 49.95 and 2.78%). Higher ME content (2.35 MJ kg-1 MS versus 1.85 MJ kg-1 MS), DE (2.87 Mcal kg-1 MS versus 2.25 Mcal kg-1 MS) and TDN (65.16% versus 51.11%), respectively. The highest values for gas production were also observed in silage with added maniçoba due to higher NFC content (34.87%). With an increase in the proportion of maniçoba, there was an increase in the soluble a fraction, b fraction, and thus a higher effective degradability of dry matter (46.56%). The addition of maniçoba improves the nutritive value of sugarcane silage.

In situ ruminal degradability of forage cactus-based diets associated with pornunça silage

“…Diets with higher forage cactus contents present higher average disappearance due to the high NFC These values corroborate with other research, who evaluated the DM degradability parameters of diets with different levels of forage cactus and buffelgrass, with values of 38.30% for fraction a, 47.10% for fraction b, 0.06% for the degradation rate of fraction b, and 85.40% of PD for the diet with a higher proportion of forage cactus (624.0 g kg -1 ) (Macêdo et al, 2018); the increase in fibrous roughage led to a reduction in these parameters, as observed in the present study. Different levels of maniçoba silage, euphorbiaceous similar to pornunça, added to sugarcane-based diets, promoted an increase in DM degradation, presenting DP of 613.1 g kg -1 DM and ED of 465.6 g kg -1 (F. A. L de Carvalho et al, 2018), these values being, respectively, close to and higher than those found here. The authors justify this behavior by the increase in DM content, lower fibrous constituents and the higher NFC content observed in silage with maniçoba in relation to conserved sugarcane.…”

Fermentation profile and nutritional quality of silages composed of cactus pear and maniçoba for goat feeding

“…Maniçoba has adequate levels of DM and soluble carbohydrates and low buffering power (Carvalho et al ., 2018). These characteristics contribute to the establishment of a better silage fermentation pattern.…”