Modulation of Fermentation Quality and Metabolome in Co-ensiling of Sesbania cannabina and Sweet Sorghum by Lactic Acid Bacterial Inoculants

Abstract

Graphical Abstract

Dynamic Changes in Fermentation Quality and Structure and Function of the Microbiome during Mixed Silage of Sesbania cannabina and Sweet Sorghum Grown on Saline-Alkaline Land

“…This may account for the decreased relative abundances of L. plantarum and L. farciminis in all treatments along with the ensiling process. LA was also negatively correlated with many species of Enterococcus , consistent with previous reports by Yang et al ( 13 ) and Xia et al ( 1 ). Silages with the production of BA and AN are regarded as poor-quality silages with unpleasant palatability and low nutritional value.…”

“…The lack of protein-rich forage in saline-alkaline regions is the primary constraint on animal husbandry development. This scarcity is usually caused by soil stress affecting typical plant nutrient uptake ( 1 ). Therefore, it is imperative to exploit high-protein forage in saline-alkaline regions to alleviate the deficiency in protein-rich forage.…”

“…Sesbania cannabina has a seasonal harvest with high biomass accumulation, which makes it feasible for making silage ( 1 ). Moreover, ensiling could preserve the nutritional components, improve the palatability, and prolong the storage time of forage ( 6 ).…”

“…Numerous studies have reported the benefits of coensiling of sweet sorghum [ Sorghum dochna (Forssk.) Snowden] (rich in WSC) with high-protein forage in terms of quality silage production ( 1 , 7 , 9 ). WSC-rich forage could provide the substrate for acid-producing microbes, especially lactic acid (LA) bacteria (LAB), which contribute to the reduction of pH.…”

“…Thus, protein-degrading bacteria were inhibited, converting the crude protein (CP) in protein-rich forage ( 7 ). Besides, sweet sorghum is also suitable for cultivation in saline-alkaline regions and could be harvested simultaneously with Sesbania cannabina ( 1 ). Therefore, coensiling of Sesbania cannabina with sweet sorghum is a realistic way to obtain high-quality silage in saline-alkaline regions.…”