The aim of this study was to evaluate the ruminal kinetics of the degradation of dry matter (DM), crude protein (CP) and neutral detergent fibre (NDF) of oat silage - potato foliage, in the ratio of 70:30, including four levels of wheat bran (0, 10, 20, 30%, based on the natural matter of the ensiled mass). A factorial randomized block design of 4 x 6 (levels, times) with three replications was used. Three Brown Swiss cattle with ruminal fistula were used. Samples (5 g) were placed in a nylon bag and incubated for 4, 8, 12, 24, 48 and 72 h. Zero time (t0) was used to calculate the soluble fraction. The disappearance (degradability) of DM, CP and NDF showed a quadratic result, observing an increase in the degradability of these nutrients up to the optimum level of 27.64, 22.64 and 27.80% inclusion of wheat bran in oat silage - potato foliage for 48 h of incubation, respectively. Except fo...

The present study aimed to determine the bromatological composition of the vetch silage associated with barley in five proportions and two levels of urea. A completely randomized design with three repetitions in a factorial scheme of 5 x 2 (proportions, urea) was used. The ratios of vetch and barley were: 0: 100, 25:75, 50:50, 75:25 and 100:0, respectively. Urea was added in 0 and 1% levels on a dry matter basis. Micro silos of PVC tubes 10 cm (diameter) x 60 cm (height) were used for 121 days. Samples were taken from the silos to determine dry matter (DM), crude protein (CP), neutral detergent fibre (NDF), acid detergent fibre (ADF), hemicellulose, mineral matter (MM) and pH. The vetch:barley 50:50, 75:25 and 100:0 without urea had higher DM content than the ammonified silages (p<0.05). The CP increased linearly in the silages with and without urea, especially the vetch/barley ammoni...

The present study aimed to determine the bromatological composition of the vetch silage associated with barley in five proportions and two levels of urea. A completely randomized design with three repetitions in a factorial scheme of 5 x 2 (proportions, urea) was used. The ratios of vetch and barley were: 0: 100, 25:75, 50:50, 75:25 and 100:0, respectively. Urea was added in 0 and 1% levels on a dry matter basis. Micro silos of PVC tubes 10 cm (diameter) x 60 cm (height) were used for 121 days. Samples were taken from the silos to determine dry matter (DM), crude protein (CP), neutral detergent fibre (NDF), acid detergent fibre (ADF), hemicellulose, mineral matter (MM) and pH. The vetch:barley 50:50, 75:25 and 100:0 without urea had higher DM content than the ammonified silages (p<0.05). The CP increased linearly in the silages with and without urea, especially the vetch/barley ammoni...

The aim of this study was to evaluate the effects of the yeast Saccharomyces cerevisiae as an additive for the preparation of oat and barley silage in two fermentation times (21 and 42 days). Oat and barley minisilos were prepared using four levels of yeast (0, 15, 30 and 45 g/kg FV). The minisilos were opened at 21 and 42 days. Three silage replicates were prepared for each combination of silage x yeast level x silage time. The bromatological composition values of the oat silage in terms of crude protein (CP), mineral matter (MM), neutral detergent fibre (NDF), acid detergent fibre (FDA), ethereal extract (EE) and pH increased when the yeast was added in relation to the control, but the dry matter (DM) decreased. The quality of the barley silage in terms of DM, CP, NDF, FDA and EE improved when adding 30 and 45 g/kg of yeast, compared to the control; however, it decreased for EE and pH....