Study on mixed silage effect of hybrid Pennisetum and different forage.

The aim of the experiment was to study the suitable mixing method of hybrid Pennisetum and different forage in different proportions. Lablab purpureus, Amaranthus hypochondriacus and Sorghum bicolor were selected as mixed objects, and the mixing ratios were 80 : 20, 70 : 30 and 60 : 40, respectively, according to the fresh weight of raw materials. After 45 d of silage, sensory evaluation, nutrient composition analysis, fermentation quality analysis and kaiser score were performed. The results showed that mixing hybrid Pennisetum and Lablab purpureus at the ratio of 80 : 20 and 70 : 30 could significantly increased the content of CP, NDF, ADF, WSC and RFV of silage (P<0.05). Mixing hybrid Pennisetum with Sorghum bicolor at the ratio of 70 : 30 could significantly decreasedthe content of acetic acid and butyric acid and improve the fermentation quality of silage (P<0.05). The pH value and acetic acid content of mixed silage of hybrid Pennisetum and Amaranthus hypochondriacus were increased which could not improve the fermentation quality of silage. The study indicates that the optimum mixing ensilage ratio of hybrid Pennisetum and Lablab purpureus is 80 : 20 and 70 : 30, and the optimum mixing ensilage ratio of hybrid Pennisetum with Sorghum bicolor is 70 : 30. [ABSTRACT FROM AUTHOR]