- Volume 29 Issue 4
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Characteristics of Wet Distillers Grains on In vitro Ruminal Fermentation and Its Effects on Performance and Carcass Characteristics of Finishing Hanwoo Steers
- Ahn, Gyu Chul (Department of Animal Science and Technology, Konkuk University) ;
- Kwak, Hyung Jun (Department of Animal Science and Technology, Konkuk University) ;
- Oh, Young Kyoon (National Institute of Animal Science, RDA) ;
- Lee, Yoo Kyung (National Institute of Animal Science, RDA) ;
- Jang, Sun Sik (National Institute of Animal Science, RDA) ;
- Lee, Sang Suk (Department of Animal Science and Technology, Sunchon National University) ;
- Park, Keun Kyu (Department of Animal Science and Technology, Konkuk University)
- Received : 2015.08.12
- Accepted : 2015.11.04
- Published : 2016.04.01
Two experiments were conducted to determine the nutrient composition, in vitro ruminal ammonia concentrations and pH of wet distillers grains (WDG, produced from tapioca 70% and rice 30%) and to evaluate dietary effects of fermented total mixed ration (TMR) using WDG on the performance, blood metabolites and carcass characteristics of Hanwoo steers from mid fattening to slaughter. In Exp. I, average dry matter (DM), crude protein, ether extract, crude fiber, ash, neutral detergent fiber, acid detergent fiber, and nitrogen free extract of seven WDG samples from an ethanol plant with different sampling dates were 19.9%, 24.8%, 3.8%, 21.8%, 8.87%, 60.3%, 34.5%, and 40.7% (DM basis), respectively. For in vitro ammonia concentrations and pH, each sample was assigned to 7 incubation times (0, 4, 8, 12, 24, 48, and 72 h). Linear increase was observed between 12 and 48 h for ammonia concentrations, but final ammonia concentrations (72 h) were not significantly different among WDG samples and fermentation patterns of WDG samples showed similar tendency. In vitro pH varied among treatments from 0 to 24 h, but were not different statistically after 48 h. In Exp. II, 45 Hanwoo steers of 23 months (
Supported by : Rural Development Administration
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