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RISS 인기검색어
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- 저자 : 양양한 ( Won J . Maeng (검색결과 4 건)
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맹원재,양양한,최일 ( Won J . Maeng,Yang H . Yang,Il Choi ) 한국축산학회 1979 한국축산학회지 Vol.21 No.6
Chemical compositions and in vitro digestibilities were estimated to evaluate the nutritive values of the different varieties of rice straws, The rice varieties used in this study were the Indica x Japonica breeding lines, Suweon 264 and Milyang 23, and Japonica, Jinheung, The heights of Milyang 23, Jinheung and Suweon 264 were 98㎝, 95㎝ and 70.4㎝, respectively, and the proportions of grain and straw were 53.8% and 46.2% of the total rice plant on a dry matter basis, Leaf blade, leaf sheath and stem were 29.6%, 36.4% and 33.9%, respectively, of the total rice straw on a dry matter basis, Crude protein and cell content were slightly higher and cell well constituents, acid detergent fiber, cellulose and lignin contents were slightly lower in Suweon 264 as compared with Jinheung and Milyang 23, but there were no differences between Jinheung and Milyang 23. Leaf sheath contained the highest amounts of cell wall constituents, acid detergent fiber and cellulose followed by leaf blade and stem. In vitro dry matter, cell wall constituents, acid detergent fiber andcellulose digestibilities of rice straw were the highest in Suweon 264 followed by Jnheung, and Milyang 23 was the least. In vitro dry matter, cell wall constituents, acid detergent fiber and cellulose digestibilities were the highest in stem and there were no differences between leaf sheath awe leaf blade.
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맹원재,양양한,최일 ( Won J . Maeng,Yang H . Yang,Il Choi ) 한국축산학회 1980 한국축산학회지 Vol.22 No.5
In vitro fermentation characteristics such as rates and extents of total and potentially digestible dry matter, cell wall constituents (CWCO), acid detergent fiber(ADF) and cellulose were determined for barley straw which were incubated for 6, 24, 36, 48, 72 and 144 hours at 39℃ in water bath. Potentially digestible dry matter (PDDM), potentially digestible CWC (PDCWC), potentially digestible ADF(PDADF) and potentially digestible cellulose (9PDcellulose) of barley straw were 59.2%, 55.3%, 46.5% and 59.6%, respectively, which were calculated by differences from indigestible residues remaining after 144 hours incubation. Fermentation rate constants and fermentation time of dry matter, CWC, ADF and cellulose of barley straw were 0.00912hr^(-1), 0.00888hr^(-1), 0.00715hr^(-1), and 0.01218hr^(-1), and 109.7hr, 112.6hr, 139.9 hr and 82.10hr, respectively. Fermentation rate constants and fermentation time of PDDM, PDCWC, PD ADF and PDcellulose of barley straw were 0.03117hr^(-1), 0.02643hr^(-1), 0.03020 hr^(-1) and 0,04630hr^(-1), and 32.1hr, 37.8hr, 33.1hr and 21.6hr, respectively.
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맹원재,최일,양양한 ( Won J . Maeng,Il Choi,Yang H . Yang ) 한국축산학회 1980 한국축산학회지 Vol.22 No.3
Rates and extents of fermentation and potentially digestible dry matter, cell wall constituents(CWC), acid detergent fiber (ADF) and cellulose of rice straw(Suweon 264) were determined in vitro, Potentially digestible dry matter(PDDM), Potentially digestible CWC(PDCWC), Potentially digestible ADF (PDADF) and potentially digestible cellulose (PDcellulose) of rice straw were 54.2%, 46.5%, 46.5% and 51.8%, respectively. Fermentation rate constants and fermention time of dry matter, CWC, ADF and cellulose of rice straw were 0.0075 hr^(-1), 0.0082hr^(-1) and 0.0096 hr^(-1) and 134 hr, 122 hr, 126 hr and 105 hr, respectively, Fermentation rate constants and fermentation time of PDDM, PDCWC, PDADF and PDcellulcose of rice straw were 0.0293 hr^(-1), 0.0348hr^(-1), 0.0336 hr^(-1) and 34 hr, 29 hr, 30 hr and 28 hr, respectively.
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볏짚의 사료가치 개선에 관한 연구 2 . 옥수수 및 요소 첨가수준과 Retention time 이 볏짚의 In Vitro 소화율에 미치는 영향
맹원재,오세정,최일,양양한 ( Won J . Maeng,Se J . Oh,Il Choi,Yang H . Yang ) 한국축산학회 1979 한국축산학회지 Vol.21 No.6
Effects of different levels of corn and urea addition and retention time on the digestibility of rice straw (Mil Yang 23) were estimated in vitro. The optimum ratio of rice straw to corn for the highest dry matter digestibility of rice straw was 50% rice straw and 50% corn, and cellulose digestibility of rice straw was increased by increasing levels of corn in the incubation medium. Dry matter, neutral detergent fiber, acid detergent fiber and cellulose digestibilities of rice straw were highest when 0.5% urea on the dry matter basis of rice straw was added. Dry matter digestibility of rice straw was 13.3% when retention time was 24hours and was 24.6% and 35.1% when retention time was 48 hours and 72 hours which were 85% and 164% increases as compared with 24 hours. Digestibilities of neutral detergent fiber, acid detergent fiber and cellulose of rice straw were increased as increasing retention time as dry matter digestibility. Total amount of rice straw dry matter digested for a day was decreased 7.5% and 12.5%, respectively, when retention time was increased to 48 hours and 72 hours from 24 hours. But total amount of neutral detergent fiber, acid detergent fiber and cellulose digested for a day were increased 10.0%, 11.1% and 2.9% when retention time was 48 hours, and 12.5%, 44.4% and 38.2%, respectively, when retention time was 72 hours as compared with 24 hours.
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