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 3-Associate professor, Department of Animal Nutrition, Animal Science Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
3 Agriculture and Natural Resources Research Center of Khuzestan
4 1- Assistant Professor, Animal Science Research Department, Khuzestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Ahvaz, Iran
Abstract
This research was conducted to investigate the nutritional value, in vitro gas production and fermentation parameters and nutritent digestibility of sugarcane residues silage treated with urea and ammonia gas in ruminant feeding in vitro and in vivo in a completely randomized design. The experimental treatments included 1) total mixed ration containing 20% of sugarcane post-harvest wastes silage without additives (control treatment), 2) control treatment with the addition of 3% urea to the concentrate (positive control), 3) total mixed diet containing 20% of sugarcane post-harvest wastes ensiled with5% urea powder and 4) total mixed diet containing 20% of sugarcane post-harvest wastes ensiled with 3% ammonia gas.The results of in vivo study showed that CP intake was significantly increased in sheep fed diet containing silage processed with ammonia gas than the control treatment (P<0.05). The DM, OM, CP and NDF digestibility were increased in sheep fed diet containing sugarcane residues processed with ammonia gas than the control treatment (P<0.05). The highest concentration of concentration of plasma urea, blood urea nitrogen and total protein was obtained in the diets containing sugarcane residues treated with ammonia gas compared to control treatment (P<0.05). In general, the results of in vitro and in vivo studies indicated that ensiling the sugarcane residue with ammonia gas improved its nutritional value by improving gas production and fermentation parameters and digestibility of nutrients.
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