Fermentation profile, microbial populations, taxonomic diversity and aerobic stability of total mixed ration silages based on Cactus and Gliricidia

Abstract

The aim of this study was to investigate the effects of Cactus (Opuntia spp) levels in total mixed ration silages based on Cactus and Gliricidia (Gliricidia sepium (Jacq.) Steud) on the fermentation profile, microbial populations, aerobic stability and taxonomic diversity. The completely randomized design was used in a 4 × 4 factorial design with four replications, being four rations with different levels of Cactus (15, 30, 45, 60% based on the dry matter) and four opening periods (0, 15, 30 and 60 days of fermentation). An interaction effect (P < 0.050) was observed among the diets and opening times for mould and yeast populations. An interaction effect for the levels of acetic acid was observed, where the diets 15, 30, 45 and 60% showed higher values at 60 days (0.44, 0.41, 0.35 and 0.40 g/kg DM, respectively). A significant difference was observed for the richness and diversity index (Chao1 and Shannon). The most abundant bacterial phyla were Proteobacteria and Firmicutes and the genera Lactobacillus and Weissella. Cactus can be added in total mixed ration silages up to the level of 60% in a way that it positively affects the qualitative indicators of the silages, modulating the taxonomic communities and allowing the predominance of important groups for preservation of the ensiled mass.

Effect of cactus pear as a moistening additive in the production of rehydrated corn grain silage

“…(2016) observed in their water-rehydrated corn silages (without additive) a shorter AS time than those observed in the current study. Therefore, the results of the current study suggest that corn grain silages rehydrated with cactus pear are more stable when exposed to air compared to corn grain silages rehydrated with water, very likely due to heterolactic fermentation, which has been widely reported in the literature for silages containing cactus pear (Pereira et al ., 2020; Sá et al ., 2020; Santos et al ., 2020).…”

“…Recently, the potential of the cactus pear as a source of substrate in silages has been evaluated to overcome fermentation problems (Macêdo et al ., 2018; Brito et al ., 2020; Santos et al ., 2020), are improving the fermentative profile of silages (Nogueira et al ., 2019; Sá et al ., 2020). The results of these studies pointed out that the use of cactus pear as an additive for silages, besides providing substrate, which ensures good fermentation, also results in heterolactic fermentation, causing these silages to become more stable during the air exposure.…”

Silagem de palma forrageira com Gliricidia Sepium: alternativa alimentar para o Semiárido

“…As silagens mistas surgem como uma nova alternativa para alimentação de ruminantes consistindo em uma combinação de ingredientes com diferente composição química, como por exemplo, um alimento rico em carboidrato e outro em proteína e fibra, sendo os dois complementares no sentido nutricional e fermentativo. De acordo com Santos et al (2020), o oferecimento deste tipo de alimento a animais ruminantes minimiza a seleção de ingredientes, melhorando o desempenho dos rebanhos e reduzindo custos em relação às rações convencionais.…”

Pontes Entre Agricultura Familiar E Biológica Através Da Formação Em Contexto De Trabalho

“…O uso do solo para fins econômicos tem maior destaque para atividades como a pecuária e exploração de madeira, o que converte a vegetação nativa em pastagens onde abrem espaço para as diversas atividades agrícolas (OLIVEIRA et al, 2020).…”

“…Quando comparada aos inoculantes presentes no mercado que convertem a glicose em ácido lático, etanol e gás carbônico (heterofermentativos), a palma, possui maior eficiência na estabilidade aeróbia e na redução de perdas durante a ensilagem. Por essa razão tem sido considerada uma alternativa promissora (SANTOS et al, 2020).…”