Nutritive value and fermentation quality of palisadegrass and stylo mixed silages

Abstract

The nutritive value and fermentation quality of palisadegrass (Brachiaria brizantha cv. Xaraes) and stylo (Stylosanthes capitata × S. macrocephala cv. Campo Grande) mixed silages were evaluated. The experiment was analyzed in a factorial scheme (5 × 2) in a completely randomized design using increasing levels of stylo (0, 25, 50, 75 and 100% on a fresh matter basis) on palisadegrass silages, with and without microbial inoculants (MI). With the increased ratio of stylo in mixed silages, dry matter (DM), crude protein (CP), acid detergent fiber (ADF), and lignin content increased in silages. The presence of MI promoted lower DM content, and higher neutral detergent fiber corrected for ash and protein, ADF and lignin content. The acid detergent insoluble nitrogen content and the lactic acid bacteria populations were not affected by treatments. The in vitroDM digestibility was affected by the interaction of levels of the stylo and MI. The pH, NH -N/total nitrogen and butyric acid concentrations decreased with increasing levels of stylo. Better nutritive value and quality of fermentation was found in the silage containing higher proportions of this stylo mixed with palisadegrass. The microbial inoculant evaluated did not alter the nutritive value or quality of the fermentation of the silages in this experiment.

Grass and Legume Hays for Sheep: Intake, in vivo Digestibility, and in situ Degradability

“…The negative nitrogen balance for the animals that consumed stylo hay indicated that CP intake did not meet the animal nutrition requirements (Table 2). Silva et al (2018) also found that for sheep, there was a negative nitrogen balance for diet with stylo silage without concentrate compared with stylo silage with concentrate and corn silage with concentrate due to lower N ingestion and absorption.…”

Nutritive value, fermentation profile and effluent loss in sweet potato vine silage, with or without microbial inoculant

“…Although the microbial inoculant contained cellulolytic, hemicellulolytic and amylolytic enzymes, it did not have any effect on the chemical composition of sweet potato vine silages. Silva et al (2018) also did not find any positive result from microbial inoculant on the chemical composition of tropical forage silages. However, the IVDMD coefficient of sweet potato vine silages can be considered high in our study, despite the high lignin content, and the nutritive value was superior in relation to other forages growing in tropical regions.…”

Campo Grande stylo and elephant grass mixed silages treated with microbial inoculant

“…Therefore, the stylo and elephant grass mixed silages exhibited lower CP content than stylo silage. According to Silva et al (2018), the inclusion of stylo with palisade grass at the proportion of 50:50 in mixed silage is possible to increase up to 60% of CP. However, in our study, silage consisting solely of elephant grass exhibited higher CP content, which was 86 g kg -1 , than the results obtained by Garcez, Santos, Machado, Nicolini and Macedo (2018), which was 37 g kg -1 .…”

“…Therefore, high-quality silage should be void of undesirable compounds that could negatively affect animal performance, the environment, or net farm income (Kung Jr, Shaver, Grant, & Schimidt, 2018). In this context, commercial microbial inoculants for silage are being used with very interesting results as regards the inhibition of the growth of aerobic and undesirable anaerobic microorganisms, and addition of beneficial microorganisms to improve fermentation and recovery of the forage dry matter (McDonald et al, 1991;Oliveira et al, 2017;Silva et al, 2018).…”