Effects of enzyme and fermented green juice on silage quality of Pennisetum sp.

To develop Pennisetum sp. for large-scale use, Pennisetum sp. silage samples were assigned to six experimental groups: control (CK), fermented green juice group (FGJ), cellulose group (CEL), fermented green juice+cellulase (Complex 1) group, xylanase (XYL) group, and fermented green juice+xylanase (Complex 2) group. Each treatment was applied to 3 replicate samples. The samples were ensiled at room temperature and opened 60 days later, after which their fermentation quality and chemical composition were analysed. The results showed that, compared with CK, the HC decreased and the DMR increased in CEL; the LA, AA, PA, and WSC of XYL decreased; the pH, GLR, and AN of FGJ decreased; the LA, DMR, and WSC of FGJ increased; the LA and PA of Complex 1 increased; the pH, GLR, AA, PA, and AN of Complex 2 decreased; and the LA of Complex 2 increased. Compared with FGJ1 and CEL, the silage quality of Complex 1 was better. Compared with FGJ2 and XYL, the silage quality of Complex 2 was better. Collectively, the results indicated that Pennisetum sp. is suitable for ensiling.