Ensiling of Rose-Flower Extraction­Residue as Animal Feed

Rose-flower residue is an avialable by-product, remained from extraction processing of rose flower in some parts of Iran, which is constitutes a potential environmental pollutant and cost effective for disposal. This experiment was conducted to determine the ensiling potential as well as the nutritive value of this by-product as ruminant feed. The residue was collected from three processing plans around Kashan area, central region of Rose industry, and ensiled, using of different amounts of effluents such as wheat straw, dry shredded beet pulp, wheat bran and limestone powder, to provide optimum dry mater and ensiling conditions. The matreials were competely mixed and ensiled in 40 plastic continers (6 liters volume), including 10 treatments and 4 replicates, then they were siled with nylon sheets. After 40 days, all silos were opened and silage characterestics were studied apparently and laboratory. Data were analysed, according to the complete randomised desighn and mean values were compared, using Duncan multiple range tests. In another experiment, the Rose residue was collected from the mentioned area and ensiled along with dry sugar beet shredded, wheat straw, and lymestone 81, 10, 8 and I percent fresh basis respectively. After two months, the silage was opened and sampled for apparent evaluation and chemical composition. The in vivo digestibility and voluntary intake of the silage were determined, using of 4 mature male sheep. This part of the study was repeated two times (two years). The OM, CP, CF, EE, NFE, of Rose residue were 94.4, 11, 24, 2.4 and 57.3 percent in dry mater respectively and GE was 4525 cVg of DM. The DM content of silages was varied from 26.7 to 36.6 percent, which was significantly (P0.05) different among the treatmens. Th values of pH were varied between 4.08 and 4.36 and significantly (P0.05) differences were observed among the treatments. The treatments contained 20 percent of sugar beet shredded or 10 percent wheat straw plus 10 percent sugar beet shredded had optimised DM and lower pH, which were considered as good quality silages. The digestibility of DM and OM were 55 :J:6.3 and 58.5:J:13.8 at first year, 53.4:J:8.5 and 56.7:J: 8 at second year respectively. Total digestible nutrients were 58.2:J:£7.6 and 57.9:J:o 8.6 for first and second years respectively. Regarding the voluntary intake, results showed 702 :J:67 Rand 730:J:43 g/anim/day of DM, 619:J:62 and 638:J:38 glanim/day of OM for first and second years respectively. When intake was expressed on the basis of metabolic weight (WO.75), 39.3:J:5 and 44:J:3 g/kg WO.75 of DM; 35:J:4.4 and 39 :J:2.3 of g/kg WO.75 OM, were observed for the first and second years respectively.