농업과학연구 (Korean Journal of Agricultural Science)

  • 제45권4호
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  • Pages.741-748
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  • 2018
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  • 2466-2402(pISSN)
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  • 2466-2410(eISSN)
충남대학교 농업과학연구소 (Institute of Agricultural Science, CNU)
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Nutritional evaluation of total mixed rations containing rice grain in an in vitro rumen fermentation system

  • Yang, Sung Jae (Life and Industry Convergence Research Institute, Department of Animal Science, Pusan National University) ;
  • Kim, Han Been (Life and Industry Convergence Research Institute, Department of Animal Science, Pusan National University) ;
  • Moon, Joon Beom (Life and Industry Convergence Research Institute, Department of Animal Science, Pusan National University) ;
  • Kim, Na Eun (Life and Industry Convergence Research Institute, Department of Animal Science, Pusan National University) ;
  • Park, Joong Kook (Institute of Livestock, Nonghyup Co., Ltd.) ;
  • Park, Byung Ki (Nonghyup Feed Co., LTD.) ;
  • Lee, Se Young (Department of Animal Science, Yonam College) ;
  • Seo, Jakyeom (Life and Industry Convergence Research Institute, Department of Animal Science, Pusan National University)
  • 투고 : 2018.08.10
  • 심사 : 2018.10.22
  • 발행 : 2018.12.31
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초록

This study was conducted to evaluate the nutritional value of total mixed rations (TMR) containing rice grain in an in vitro rumen fermentation system. Three types of grains (corn, wheat, and rice), timothy, and soybean meal (SBM) were used to prepare the experimental TMR: Corn TMR, Wheat TMR, and Rice TMR. The rumen fermentation characteristics of all the experimental TMRs were evaluated by an in vitro anaerobic system using rumen fluid for 24 and 48 h. The digestibility of the nutrients (dry matter [DM], crude protein [CP], and neutral detergent fiber [NDF]), pH, ammonia ($NH_3-N$), and volatile fatty acids (VFA) were determined. Rice TMR showed a higher DM digestibility than that of the Corn TMR at 48 h (p < 0.05). In all treatments, the CP digestibility was more than 80% at 48 h, but no significant differences were observed among the treatments. The NDF digestibility tended to be the lowest in the Wheat TMR (p = 0.06), and the pH tended to be the lowest in the Rice TMR (p = 0.09) among the treatments for the 48 h incubation. The Wheat TMR had the highest $NH_3-N$ concentration among the treatments (p < 0.01). Rice TMR had a lowest total VFA concentration among the treatments (p = 0.05) at 24 h, but no significant differences were observed at 48 h. Based on this in vitro result, it was considered that a rice grain has the potential to replace conventional grain ingredients when the TMR was formulated.

키워드

Table 1. Chemical composition (%DM or as fed basis) of feed ingredient and experimental TMR.

CNNSA3_2018_v45n4_741_t0001.png 이미지

Table 2. In vitro fermentation of TMR with diferent treatments.

CNNSA3_2018_v45n4_741_t0002.png 이미지

Table 3. Volatile fatty acids production of TMR with diferent treatments.

CNNSA3_2018_v45n4_741_t0003.png 이미지

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피인용 문헌

  1. Replacement of corn with rice grains did not alter growth performance and rumen fermentation in growing Hanwoo steers vol.33, pp.2, 2018, https://doi.org/10.5713/ajas.19.0691
  2. Substitution effects of rice for corn grain in total mixed ration on rumen fermentation characteristics and microbial community in vitro vol.62, pp.5, 2020, https://doi.org/10.5187/jast.2020.62.5.638
  3. Evaluation of parboiled rice by-product as a ruminant feed: in vitro digestibility and methane production vol.762, pp.1, 2021, https://doi.org/10.1088/1755-1315/762/1/012045