Digital Radiography 환경에서 Positioning Block Artifact에 관한 연구

김병기,최준구,이준,이민우,김순배,김경수,Kim, Byung-Ki,Choi, Jun-Gu,Lee, Jun,Lee, Min-Woo,Kim, Sun-Bae,Kim, Gyeong-Su 대한디지털의료영상학회 2008 대한디지털의료영상학회논문지 Vol.10 No.1

Purpose : In sponge quality of the material in digital radiography environment coating because do position blocks two that do not become coating done positioning blocks two that do not become coating done positioning block and sponge quality of the material to testing bench image artifact's difference compare. Method of study : In digital radiography environment positioning block of different two products same sunshine or effect that image and positioning block artifact gents in image analyze. the target used positioning block 2 when examine hand, rib and examination condition did each differently according to used positioning block. reflex compared picture that do image and verify that examine first time. Result : 1. In sponge quality of the material coating in done product artifact appear. Did not appear in product that do not become coating. 2. Can know coating's existence, that artifact according to radish happens. 3. Quality of the material coating's existence, there was difference of slippage according to radish Conclusion : Quality of the material coating phenomenon that done positioning block thus, it may have to be considered that use after estimate degree that get in image.

디지털 평판형 검출기에서 Control Panel의 Density Display와 Sensitivity 설정이 조사선량(mAs)과 획득영상에 미치는 영향에 관한 연구

김병기,김상건,차선화,최준구,이준,이민우,김순배,김경수,Kim, Byung-Ki,Kim, Sang-Keun,Cha, Seon-Hwa,Choi, Jun-Gu,Lee, Jun,Kim, Min-Woo,Kim, Sun-Bae,Kim, Gyeong-Sun 대한디지털의료영상학회 2007 대한디지털의료영상학회논문지 Vol.9 No.2

The purpose to recognize change of average pixel value of acquisition image by control panel's density and right set up method of speed (sensitivity) and exposure dose(mAs) change that dose in purpose digital flatpanel-detector. X -ray generator DHF-158H2(Hitachi, Japan). Detector CXDI 4OG(Canon, Japan), 12 : 1 grid and exposure ray 135 kVp, 250 mA, 10 ms. focus-detector distance 180 cm and used AEC mode. DICOM reflex analysis program used image J that is digital reflex analysis program that offer in United States America National Health Center(National Institutes of Health : NlH) phantom used chest phantom(Anthromorphic : Flukebrome.medicaI USA). An experiment chest phantom that consist by formation equivalence material use because density value( -3${\sim}$+3) in X-ray control panel and seep that is speed step(slow, medium, fast) each control experimentalize. image analysis reflex neted through an experiment using image j each image compare. These was change in dose according to slow, medium, fast and density's change in an experiment result. According to detector sensitivity and density condition set, dose was relationship dissimilarity 500% from 200%. The dose came highest when is density +3 to slow. and dose more increases gray scale's extent could know that rise. Could know whether how equipment set is important through this experiment. cause of disease which change by digital radiography system forward is thought to increase more, it is considered that suitable education by this and continuous interest about equipment need absolutely.

쑥 펠렛사료 급여가 돼지의 육질에 미치는 영향

김병기,김영직,김수민,Kim Byung-Ki,Kim Young-Jik,Kim Soo-Min 한국축산식품학회 2004 한국축산식품학회지 Vol.24 No.4

본 연구는 쑥 펠렛 사료 급여에 따른 돼지의 성장율과 육질에 미치는 영향을 구명하고자 거세돈과 비거세돈에게 각각 대조구, 쑥 펠렛 3%, 쑥 펠렛 5%씩을 첨가급여하여 60일간 사양한 후 실험한 결과는 다음과 같다. 일당증체량에서 거세돈구 및 비거세돈구의 쑥 펠렛 사료 급여구가 대조구보다 유의적으로 높았다(p<0.05). 사료요구 율은 거세돈구가 비거세돈구보다 낮았고, 거세돈구의 경우는 쑥 펠렛 첨가에 따라 낮아지는 경향을 보였다. 전처리구간의 돈육의 일반성분은 조지방 함량을 제외하고 처리구간에 차이가 없었고, 그 중 거세돈구는 쑥 펠렛 급여에 따라 조지방 함량이 낮아져 유의성이 인정되었다(p<0.05). 전단력과 관능검사는 거세돈구가 비거세돈구보다 높아 유의차가 있었고(p<0.05), 또한 쑥 펠렛 급여구는 대조구보다 크게 향상되었다(p<0.05). 거세돈구의 경우 연도와 향미는 쑥 펠렛 3.0% 급여구가 가장 좋게 나타났다. 돈육의 카뎁킨 함량은 거세돈구가 비거세돈구보다 더 높은 경향이었고, 쑥 펠렛 첨가 수준이 증가함에 따라 높아지는 경향을 나타내었다. To investigate the effect of dietary mugwort pellet on the growing performance and meat quality barrow (T1) and boar (T2) were alloted into six treatments : 1) commercial feed, 2) T1-1 and T2-1 (commercial feed supplemented with 3.0% mugwort pellet), 3) T1-2 and T2-2 (commercial feed supplemented with 5.0% mugwort pellet). They were fed experimental diets for 60 days before slaughtered. Meat samples were taken in wrap package and stored at 4$\pm$1$^{\circ}C$. Daily gain in both groups (T1 and T2) were higher than those of the control (p<0.05). Feed conversion tended to be lower in barrow group than boar group and tended to be decreased according to supplementation of mugwort pelleted diet in barrow group. In both barrow and boar groups, proximate compositions of pork were not sigificantly different, except for crude fat. Crude fat content was tended to be low in barrow when fed mugwort pelleted diet. Shear force value and sensory properties were siginificantly higher in barrow group than in boar group (p<0.05) and these results were also seemed due to great fed mugwort pelleted aiet(p<0.05). In the barrow group, values of tenderness and flavor were the highest in pigs fed diet supplemented with 3.0% mugwort. The catechin content of pork tended to be higher in boar group than in barrow group and catechin tended to increase with supplementation of mugwort in the diet.

미생물제제 첨가가 돈육과 계육의 지방산 조성 및 콜레스테롤 생산에 미치는 영향

김병기,홍진규,박지현,김현수,Kim Byung-Ki,Hong Kyu-Jin,Park Ji-Hyun,Kim Hyun-Soo 한국축산식품학회 2004 한국축산식품학회지 Vol.24 No.4

본 연구는 공시균인 Aspergillus terreus와 유산균을 이용하여 혈중 및 고기내 콜레스테롤이 저하된 육류 개발을 목표로 하였다. 따라서 거세돈 60두를 60일간 및 육계는 6주간을 공시하여 대조구는 일반 시판사료만 급여하였고, T1구는 Aspergillu terreus 배양체, T2구는 시판중인 EM-pro 배양체(Lactobacillus acidophilus, Bacillus subtilis와 Saccharmyces cervisiae의 3종 혼합배양물)를 각각 0.2%씩 첨가급여한 결과는 다음과 같다. 돼지고기내의 스테아린산은 T1구와 T2구가 높았으나, 올레인산은 대조구와 T1구가 높았다(p<0.05). 또한 닭고기의 스테아린산은 대조구가 높았으나, 올레인산은 T1구와 T2가 유의적으로 높았다(p<0.05). 혈액 중 돼지고기의 총 콜레스테롤과 HDL-cholesterol 함량은 T1구(63.77mg, 111.19mg)가 대조구(101.69mg, 132.37mg)보다 크게 낮아 통계적인 유의차를 보였고(p<0.05), 육계의 경우는 T1구(78.50mg, 143.61mg)가 대조구(119.26mg, 240.43mg)보다 크게 낮았다(p<0.05). 돼지고기의 총 콜레스테롤과 HDL-cholesterol 함량은 T1구(78.53mg, 117.64mg)가 대조구(140.5mg, 150.55mg)보다 크게 낮아 유의차를 나타내었고(p<0.05). 육계의 경우는 T1구 (93.35mg, 72.03mg)가 대조구(111.90mg, 116.88mg)보다 크게 낮았다.(p<0.05). 이상의 결과를 종합해 볼 때, Aspergillus terreus 처리한 T1구가 돼지와 육계의 혈액 및 고기내에서 총 콜레스테롤과 HDL-cholesterol 함량이 크게 낮아졌다. 따라서 Aspergillus terreus 배양체가 체내의 콜레스테롤 합성에 상당히 영향을 미친것으로 판단되며, 향후 저 콜레스테롤 고기 생산의 가능성을 보여주었다. This study was conducted to determine the effect of supplemented useful microorganisim on meat quality of growing-finishing pigs for sixty days and broiler for six weeks. The pig and broiler were randomly allotted into three treatment (twenty-forty heads /treatment) ; Control (0%), T1 (supplemented with 0.2%, Aspergillus terreus koji), T2 (supplemented with 0.2%, EM-pro). The amount of stearic acid of pork was highest in T1 and T2, and oleic acid was highest in control and 71 than others (p<0.05). The amount of stearic acid of the chicken was highest in control, and oleic acid was highest in T1 and T2 than the others. Total cholesterol and HDL-cholesterol in the serum of pigs were decreased with significant difference (p<0.05) in T1 (63.77 and 111.19mg/mL, respectively) than control(101.69 and 132.37 mg/mL) and those of the chicken were decreased with lower significant difference (p<0.05) in T1 (78.50 and 143.61mg/mL) than control (119.26 and 240.43mg/mL). Total cholesterol and HDL-cholesterol in the pork were decreased with lower significant difference (p<0.05) in T1 (78.53 and 119.64 mg/mL) than control (140.55 and 150.55mg/mL), and those of the chicken were decreased with lower significant difference (p<0.05) in T1 (93.35 and 72.03mg/mL) than control (111.90 and 116.88 mg/mL). From the results, the amount of total cholesterol and HDL-cholesterol in pig and chicken was remarkably changed according to supplementation of Aspergillus terreus koji which containing the produced lovastatin.

쑥사료 급여가 비육한우의 육질에 미치는 영향

김병기,정창진,Kim, Byung-Ki,Jung, Chang-Jin 한국축산식품학회 2007 한국축산식품학회지 Vol.27 No.2

This study was conducted to determine the effect of feeding dietary mugwort on the beef quality during 14 month(from 14 month to 27 month) with 32 heads of fattening Hanwoo. Fattening Hanwoos were randomly allotted 4 treatments(8 heads/treatment): C-1[(control(0%) of Hanwoo steers)], C-2[(control(0%) of Hanwoo heifers)], T-1(supplemented with mugwort powder 2.0% of Hanwoo steers), T-2(supplemented with mugwort powder 2.0% of Hanwoo heifers). The shear force value and water holding capacity(WHC) of longissimus muscle were the highest in T-1($3.20kg/0.5inch^2$, 54.32%) and cookingloss was in C-2(22.22%) than the others(p<0.05). However, panel test scores of juiciness, tenderness and flavor of longissimus muscle were the highest for T-1(5.20-5.50 point) between the treatment group. The total catechin and epicatechen in longissimus muscle were higher in treatment group(0.43-046 mg/kg, 0.056-0.065 mg/kg) than control group(0.23-0.25 mg/kg, 0.031-0.032 mg/kg)(p<0.05). The content of total fatty acid in longissimus muscle were oleic acid(48.45-47.56%), palmitic acid(29.67-28.86%), stearic acid(9.92-10.82%), palmitoleic acid and myristic acid(4.68-5.49%, 2.48-3.89%) of range. In conclusion, the effects of feeding dietary mugwort of Hanwoo steer were improved the quality beef with highly panel test scores(juiciness, tenderness, flavor) and physical-chemical characteristics(shear force value, WHC). 본 연구는 비육한우 32두(거세우 16두, 암소 16두)를 대상으로(C-1구 거세우에게 일반사료 : C-2구 암소에게 일반사료 : T-1구 거세우에게 쑥 2% 첨가 : T-2구 암소에게 쑥 2% 첨가) 4개 처리구를 두고 14개월간(생후 14개월-27개월) 비육시험한 결과는 다음과 같다. 등심부위의 전단력과 보수성은 T-1구($3.20kg/0.5inch^2$, 54.32%)가, 가열감량은 C-2구(22.22%)가 다른 처리구보다 크게 높았다(p<0.05). 관능검사의 다즙성, 연도 및 향미는 처리구가 대조구보다 높은 경향을 보였고, 그 중에서도 T-1구(5.50점-5.20점)가 가장 높게 나타났다. Catechin 성분에서 총 카테킨 및 에피카테킨 성분은 처리구(0.43-0.46 mg/kg, 0.056-0.065 mg/kg)가 대조구(0.23-0.25 mg/kg, 0.031-0.032 mg/kg)보다 더 높게 나타났다. 지방산 조성에서 oleic acid은 47.56-48.45% 정도, palmitic acid은 28.86-29.67%, stearic acid는 9.92-10.82%, palmitoleic acid 및 myristic acid는 4.68-5.49%와 2.48-3.89%의 범위로서 처리간에 유의차가 없었다. 이상의 시험결과로 볼 때, 거세한우에 대한 쑥첨가는 육질의 관능검사(다즙성, 연도, 향미) 및 이화학적 특성(전단력, 보수성)에서 크게 향상되었다.

산란계 품종별에 따른 계란의 주요 성분과 품질 비교

김병기,하재정,이준구,오동엽,정대진,최성복,황은경,김수정,이제영,Kim, Byung Ki,Ha, Jae Jung,Yi, Jun Koo,Oh, Dong Yep,Jung, Dae Jin,Choi, Seong Bok,Hwang, Eun Gyoung,Kim, Soo Jung,Lee, Jea Young 한국데이터정보과학회 2016 한국데이터정보과학회지 Vol.27 No.5

본 논문은 계란에 대한 소비자들의 인식을 향상시키기 위해 산란계 종류에 따른 계란품질과 성분조성을 실험 및 분석하였다. 산란개시 32주령에 있는 4개 품종의 청색란실용계 (BC), 연산오골계 (YS), 재래닭 (KN), 백색레그혼 (WL) 총 120수 (각 처리구당 10수 ${\times}$ 3반복 ${\times}$ 4처리구)를 임의 배치하여 생산된 계란의 성분을 분석하였다. 계란의 품질 평가의 경우, BC가 다른 품종에 비하여 호우닛 계수 (82.82),난각강도 (0.37mm) 및 난각두께 ($40.58kg/cm^2$)가 유의적으로 높게 나왔으며, 계란의 콜레스테롤 함량은 BC가 317.58mg/100g로 가장 낮았지만, YS는 381.30mg/100g으로 매우 높게 나타났다 (p<0.05). 그리고 계란의 지방산 조성에서 oleic acid (C18:1n9)함량은 BC가 다른 품종보다 매우 낮았으며, 아미노산의 경우에는 Thronine과 Proline을 제외한 모든 성분에서 대체로 WL종이 다른 품종보다 더 높게 나타났다 (p<0.05). This study was to execute the random arrangement of total 120 heads (10 heads per treatment plot ${\times}$ 3 repeats ${\times}$ 4 treatment plots) for four breeds [Blue arakana commercial Fowl (BC), Yeonsan silky fowl (YS), Korean native fowl (KN), White leghorn fowl (WL)] with the initiation of laying hens at 32 weeks old in order to comparatively analyze egg quality and composition by sorts of laying hens. In case of evaluation of the quality of eggs, this study has shown that BC had higher degree of Haugh unit coefficient (82.82) and in case cholesterol content of eggs, BC had significantly low content as 317.55mg/100g, but YS had rather higher content as 381.30mg/100g. Furthermore, this study has found out that BC had significantly low Oleic acid (C18:1n9) and WL had higher Amino acid content by breeds than those of other breeds (p<0.05).

고급육생산을 위한 한방생균제 첨가급여 효과

김병기,하재정,이준구,오동엽,정대진,황은경,이제영,Kim, Byung Ki,Ha, Jae Jung,Yi, Jun Koo,Oh, Dong Yep,Jung, Dae Jin,Hwang, Eun Gyeoung,Lee, Jea Young 한국데이터정보과학회 2016 한국데이터정보과학회지 Vol.27 No.4

본 연구는 한방생균제 첨가급여가 거세한우육의 이화학적 특성 및 지방산, 아미노산 조성에 미치는 영향을 알아보기 위하여 거세한우 50두 (5처리${\times}$10두)를 공시하여 육질을 분석하였다. 육의 조지방 함량은 T2그룹과 T3그룹이 유의적 높았으나, 가열감량은 Con 2그룹이 가장 높았다 (p<0.05). 보수력은 56.73~60.16% 범위로, 전반적으로 처리그룹이 대조그룹보다 더 높았으며, 그 중에서 T3그룹이 유의적으로 높았다 (p<0.05). 콜레스테롤 함량은 41.64~47.33 mg/100g 범위로, 그 중에서 Con 1그룹이 유의적으로 높았다 (p<0.05). 또한 관능평가인 다즙성, 연도, 향미는 T3그룹이 매우 높게 나타났다 (p<0.05). 그리고 지방산 조성에서 올레인산과 무파 T2그룹과 T3그룹이 유의적으로 높았으나 (p<0.05), 아미노산 함량은 처리그룹 간에 거의 차이가 없었다. 이 결과에서 한방생균제 첨가급여는 한우육의 육질개선 및 불포화 지방산에 영향을 미치며 고급육 생산에 도움이 될 것으로 판단된다. This study was carried out to investigate the effect of dietary addition of herbal probiotics on the Hanwoo steers' physiochemical property. A total of 50 Hanwoo steers (5 treatment groups${\times}$10 heads) were used. The crude fat content of beef has been found significant high in T2 and T3 group, and the Con 2 group had the highest heating loss (p<0.05). The water-holding capacity ranged from 56.73% through 60.16%, and the treatment group was generally higher than the control group. In particular, the T3 group showed significantly high water-holding capacity (p<0.05). The cholesterol content ranged from 41.64mg/100g through 47.33mg/100g. In the overall and the Con 2 group had significantly high cholesterol content (p<0.05). Furthermore, the oleic acid and MUFA had significant high T2 and T3 group in the fatty acid composition (p<0.05), but the amino acid content made no difference between the treatment groups.

한방제재 급여가 재래 흑염소육의 육질 및 관능적 특성에 미치는 영향

김병기,이지홍,정대진,조광현,황은경,김수민,Kim, Byung-Ki,Lee, Ji-Hong,Jung, Dae-Jin,Cho, Kang-Hyun,Hwang, Eun-Gyeong,Kim, Soo-Min 한국축산식품학회 2010 한국축산식품학회지 Vol.30 No.5

거세 재래흑염소를 각 처리구별로 8두씩 배치하여 총24두(3처리$\times$8두)를 대상으로 대조구(무첨가)와 시험구인 T1구(한방제재 1%첨가)와 T2구(한방제재 2% 첨가)로 구분 배치하여 총 500일간 비육 시험한 결과는 다음과 같다. 비육 전기간(500일간) 동안의 총 증체량과 일당증체량은 T2가 28.30 kg과 0.057 kg으로 타 처리구보다 가장 높았다. 총 사료섭취량에서도 T2구가 519.20 kg으로 크게 높았으며, 사료요구율은 18.35으로 사료효율성이 가장 좋게 나타났다. 도체율은 T1구가51.10%로 가장 높았고(p<0.05), 흑염소 등심육의 가열감량과 드롭로스는 대조구가 시험구보다 크게 높았다(p<0.05). 콜레스테롤 함량은 시험구가 대조구보다 더 높은 경향이었지만 통계적인 유의차는 없었다(p>0.05). 또한 관능검사의 연도, 향미, 조직감 및 염소 특이취는 시험구가 대조구보다 크게 낮아져 (p<0.05), 종합적인 관능평가에서는 시험구(3.71점, 3.90점)가 대조구(4.82점)보다 더 좋게 되었다(p<0.05). 지방산 조성의 단가불포화지방산(MUFA)/포화지방산(SFA)과 불포화 지방산(UFA)/포화지방산(SFA)의 비율에서는 시험구가 대조구보다 더 높은 경향이었으나 통계적인 유의차는 없었다. This study was carried out to investigate the effect of different herb resource powders on meat quality and sensory properties in Korean native black goat for 500 d. The experimental treatment was arranged with 24 heads (3 treatment/8 heads) by control group, T1 and T2 group respectively (Control, not added herb powders; T1, 1% added herb powders; T2, 2% added herb powders). Total weight gain for the Korean native black goat was the highest in T2 group feeding for 500 days, and daily gain tended to be similar to the total weight gain. The total feed intake were the highest as 519.20 kg in T2 group, although feed conversion showed 18.35 in the T2 group, which means it had the best feed efficiency compared to the other treatment groups. The carcass rate was higher in the T1 group (51.10%) than in the other groups (p<0.05). The cooking loss and drip loss of Korean native black goat was the highest as 34.72% and 3.83% in the control group (p<0.05). However, total cholesterol amounts in the treatment group were not significantly different from, although tended to be higher than, the control group (p>0.05). Also, the overall sensory evaluation of the treatment group revealed low scores, meaning more meat flavor than those of the control in tenderness, flavor, texture, and black goat off-flavor and overall evaluation (p<0.05). Total synthesis evaluation was higher for the treatment group (3.71, 3.90 point) than that of the control group (4.82 point) (p<0.05). The MUFA/SFA ratio of the treatment group was not significantly different from, although tended to be higher than, the control group

한방생균제가 한우의 체중, 혈액성상, 면역성 및 육량·육질에 미치는 영향

김병기,하재정,이준구,오동엽,정대진,황은경,김수정,안용근,Kim, Byung Ki,Ha, Jae Jung,Yi, Jun Koo,Oh, Don Yep,Jung, Dae Jin,Hwang, Eun Gyeong,Kim, Soo Jung,Ann, Yong Geun 한국식품영양학회 2016 韓國食品營養學會誌 Vol.29 No.6

This study was a report on 60 heads of Hanwoo steers(5 treatments ${\times}$ 4 heads ${\times}$ 3 repeats). Their start weights were $361.2{\pm}14.39kg$ to $380.5{\pm}27.33kg$; 12.7 to 13.6 months of age. The aim was to investigate the effect of herbal probiotic supplementation on the weight, blood composition, meat quality and immunity in beef. In case of body weight gain, con. 1 plot(183.8 kg) in the early fattening stage, T3 plot(115.1 kg) in the middle fattening stage, and T2 plot(163.3 kg) in the late fattening stage significantly increased(p<0.05). There was a statistically significant difference in the blood content of T-Cho and IgG: con. 1 plot and T1 plot in the early fattening stage, T3 plot and T2 plots in the middle fattening stage, and con. 2 plot and T1~T3 plots in the late fattening stage had higher blood content than that of other treatment plots (p<0.05). In addition, the carcass weight was highest in the T1 plot and T2 plot among the total treatment plots(p<0.05). However, no statistical significant difference was observed in the different treatments; all individual treatment plots(T1~T3 plots) were somewhat higher than the control plots(con. 1~con. 2 plots) with respect to the carcass quantity and carcass quality. Combining and analyzing all results revealed that the dietary addition of herbal probiotics for Hanwoo steers had a positive effect on the improvement of weight, amount of meat, meat quality and immunity.

쑥사료 급여가 비육한우의 비육능력 및 도체특성에 미치는 영향

김병기,정창진,Kim, Byung-Ki,Jung, Chang-Jin 한국축산식품학회 2007 한국축산식품학회지 Vol.27 No.3

본 연구는 비육한우 32두(거세우 16두, 암소 16두)를 대상으로 (C-1구 거세우의 일반사료 : C-2구 암소의 일반사료 : T-1구 거세우에게 야생쑥 2%첨가 : T-2구 암소에게 쑥 2%첨가) 4개 처리구를 두고 14개월간(생후14개월-27개월) 비육시험한 결과는 다음과 같다. 27개월 시험종료 체중에서 대조구인 C-1구, C-2구는 각각 648.6, 623.1kg이었고, 처리구인 T-1구, T-2구는 각각 663.3 kg 및 620.7 kg으로서 T-1구가 가장 높았고, 총 증체량과 일당증체량에서도 T-1구가 각각 342.4 kg과 0.88 kg으로 가장 높았다. 1일 두당 총 사료섭취량은 대조구인 C-1구 및 C-2구와 처리구인 T-1구 및 T-2구가 각각 9.35, 9.09, 10.08 및 9.69 kg으로 T-1구가 가장 높았고, 사료요구율에서는 C-1구(11.28) > T-1구(11.48) > C-2구(11.52) > T-2(12.57)순으로 낮았다. 혈중 총콜레스테롤, GOT, GPT, 글리코스 및 BUN은 대체로 시험개시전보다 시험개시후가 더 높은 경향이었고, 특히 시험개시후의 총 콜레스테롤, GOT 및 glucose 함량은 처리구가 대조구보다 낮았다 (p<0.05). 도체중은 처리구(344.11-378.08 kg)가 대조구(342.71-369.70 kg)보다 높은 경향이었고, 등지방두께는 처리구(12.75-14.75 mm)가 대조구(15.76-16.00 mm) 보다 얇아진 반면에 배최장근 단면적은 처리구$(84.25-87.88cm^2)$가 대조구$(84.00-85.25cm^2)$보다 넓어졌다. 그 중에서 T-1구가 각각 14.75 mm와 $87.88cm^2$로 가장 좋았으며, 육량 및 육질등급은 처리구(각각, 2.02-2.50점, 2.85-3.05점)가 대조구(각각, 1.80점, 2.80-2.55점)보다 높았다. 본 시험의 결과를 종합해 볼 때 거세한우에게 쑥첨가는 일당증체량 증가, 도체중, 배최장근 단면적 및 육질개선 효과가 있는 것으로 판단된다. This study was conducted to determine the effect of mugwort powder supplementation on the fattening performance and carcass characteristics during a 14 month period (from 14 months to 27 months after birth) in 32 heads of fattening Hanwoo. Fattening Hanwoos were randomly assigned 4 treatments (8 heads/treatment): C-1 [(control (0%) with Hanwoo steers)], C-2 [(control (0%) with Hanwoo heifers)], T-1 (supplementation with 2.0% mugwort powder with Hanwoo steers) and T-2(supplementation with 2.0% mugwort powder with Hanwoo heifers). The final body weights for C-1, C-2, T-1 and T-2 at 27 months were 648.6kg, 623.1kg, 663.3kg and 620.7kg, respectively. The total gain and the daily gain were highest in the T-1 group (342.4 kg, 0.88 kg). Hanwoo steers were not significantly different from Hanwoo heifers. The feed intake for the C-1, C-2, T-1 and T-2 groups were 9.35 kg, 9.09 kg, 10.08 kg and 9.69 kg, with the T-1 value being highest. The feed conversion ratios were as follows: C-1 (11.28) > T-1 (11.48) > C-2 (11.52) > T-2 (12.57). The concentrations of total cholesterol, GOT, GPT, glucose and BUN in blood serum during the fattening period were higher after than before the experiment The total cholesterol, GOT and glucose after completion of the experiment were higher in the treatment groups than the control groups (p<0.05). The carcass body weight was higher in the treatment groups than the control groups. The back fat thickness was lower in the treatment groups (12.75-14.75mm) than the control groups (15.76-16.00mm), and the longissimus muscle area was higher in the treatment groups $(84.25-87.88cm^2)$ than the control groups $(84.00-85.25cm^2)$ with the highest over-all values in the T-1 group (p<0.05). The yield grade and quality grade point were higher in the treatment groups (2.02-2.50, 2.85-3.05 point, respectively) than the control groups (1.80, 2.55-2.80 point, respectively). In conclusion, the effects of feeding dietary mugwort powder to Hanwoo steers improved the ADG, carcass body weight, longissimus muscle area and quality grade.