Study Of Water Hyacinth And Maize Straw Mixed Silages

In this study, water hyacinth and maize straw were used as silage material in different proportions to determine the effect of moisture and defferent additives on the silage quality. The result will provide theoretical basis for quality control of the mixed silage with water hyacinth and maize straw and also will provide a feasible way of utilization for water hyacinth.Experiment one: Water hyacinth (moisture 79.69%) and maize straw (moisture72.03%) were ensiled in different proportions of 8:2, 7:3, 6:4 and 5:5, which named as 82MR, 73MR, 64MR and, 55MR respectively. The control group (CON) added with no addtives, treatment groups added with fermented green juice (FGJ), cellulose (CEL) and FGJ+CEL (MIX) were conducted. Each treatment includes two replicates. Ensilaged duration was lasted for 60 days in room temperature. pH, dry matter recovery (DMR), gas loss rate (GLR) and other indicators were measured. Results indicated that high-quality silage was maintained by the proportion of maize straw in 30 percent or higher, the higher proportion of maize straw, the better quality of the silage. Three kinds of silage additives in all treatments had a certain effect on the quality of silage, synergy effects were obtained in the silage of 73MR group with MIX additive. The best quality of silage was determined in the group of 55MR with MIX additive.Experiment two: Water hyacinth (moisture 60.70%) and maize straw (moisture 71.20%) were ensiled in different proportions of 8:2,7:3 and 6:4, which named as 82MR, 73MR, 64MR respectively. The control group (CON) added with no addtives, treatment groups added with fermented green juice (FGJ), cellulose (CEL) and FGJ+CEL(MIX) were conducted. Each treatment includes two replicates. Ensilaged duration was lasted for 60 days in room temperature. pH, dry matter recovery (DMR), gas loss rate (GLR), ammonia (NH₃-N), lactic acid (LA), water soluble carbohydrate (WSC ) and other indicators were measured. Results indicated that high-quality silage was maintained by the proportion of maize straw in 30 percent or higher, the higher proportion of maize straw, the better quality of the silage. Silage quality was regulated by the additives. Three kinds of silage additives in all treatments had a certain effect on the quality of silage. pH and NH₃-N concentration of silages in the treatments added with MIX were lower than silages in the treatments added with FGJ and CEL. LA, DMR and WSC of silages in the treatments added with MIX were higher than silages in the treatments added with FGJ and CEL. The best quality of silage was determined in the group of 64MR with MIX additive.