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반추가축영양 : 보리 총제담근먹이 급여가 거세한우의 발육 , 사료이용성 및 육질에 미치는 영향
조원모(W . M . Cho),조영무(Y . M . Cho),홍성구(S . K . Hong),정의수(E . S . Jeong),이종문(J . M . Lee),윤상기(S . K . Yoon) 한국축산학회 2000 한국축산학회지 Vol.42 No.2
This study was conducted to investigate the effect of feeding whole crop barley silage(WBC) on growth performance, feed efficiency and meat quality in Hanwoo steers. Forty steers were allocated to control(C) which was fed rice straw overall periods and four treatment groups(T₁- T₄) which were fed both WBC and rice straw ad libitum according to the treatments and allowed free access to water. Concentrates were fed at 1.5% level of live body weight during 4-12 months of age, at 1.8% level of live body weight during 13-18 months and ad libitum after 19 months. The results obtained were as follows : The daily gain of control (C) was lower (0.7㎏) than that of treatment group (0.8㎏) and the concentrate intake per ㎏ gain during experimental periods in control (C) was higher than those of treatments, also dry matter basis obtained the same results. Cold carcass weight in Control was lower than those of other treatments except T₄, especially was lower than T₂(p $lt; .05) but fat percentages in T₂was higher. Beef quality and yield traits of steers in T₂was higher than those of treatments. Therefore WBC as roughage has effect on steer feeding system for improving meat grade and growth.
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박창순(C-S Park),송삼삼(S-s Song),이현장(H-j Lee),이종준(J-J Lee),홍성현(S-H Hong),조현무(H-M Jo) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.4
In recent Year were many devices and facilities developed and manufactured. For guarantee of the property of the devices and facilities needs Vibration protecting Technique and the Technique will be developed more and more. Magneto-Rheological damper is one of the nice devices for reducing of Vibration. In this paper magnetic properties of a MR-damper which is developed for reducing of vibration in display manufacture devices will be analysed at variation different air-gap length and current.
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