Document Type : Research Paper
Authors
1 Assistant Professor, Animal Science Research Department, Khuzestan Agricultural and Natural Resources Research and Education Center, AREEO, Ahvaz, Iran
2 - Associate Professor, Animal Science Research Department, Khuzestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Ahvaz, Iran
3 Associate professor, Department of Animal Nutrition, Animal Science Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
Abstract
The present study was conducted to investigate the silage properties and nutritional value of total mixed ration silage (TMRS) based on sugarcane pith and rice straw in feeding fattening lambs under in vitro and in vivo conditions and in a completely randomized design. The experimental treatments included 1) control diet based on wheat straw and alfalfa), and experimental diets containing 10, 20 and 30% sugarcane pith and rice straw mixture based on dry matter (DM) in diet containing forage corn and concentrate. The results of in vitro experiments showed that there was no significant difference between the different treatments in terms of the volume of gas production (GP) at different times, the potential (b) and rate (c) of GP, DM disappearance, organic matter (OM) disappearance and metabolizable energy (P<0.05). In vivo experiment showed that DM and OM intake, average daily gain and total weight gain in TMRS diet based on 20% sugarcane pith and rice straw were significantly higher compared to the control diet (P<0.05). The rumen ammonia-N concentration and acetate increased significantly in TMRS diet compared to control (P<0.05). The total blood protein concentration was higher in TMRS diet compared to control diet (P<0.05). Overall, the use of complete feed silage containing 20% sugarcane peat and rice straw improved growth performance and metabolic indices of fattening lambs while reducing feeding costs.
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