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한국 재래계와 백색 레그혼 토착종의 주요 경제형질간 상관관계 비교
김영신 ( Young Sin Kim ),변미정 ( Mi Jeong Byun ),서상원 ( Sang Won Suh ),김재환 ( Jae Hwan Kim ),조창연 ( Chang Yeon Cho ),조영무 ( Young Moo Cho ),이지웅 ( Ji Woong Lee ),최성복 ( Seong Bok Choi ) 한국국제농업개발학회 2015 韓國國際農業開發學會誌 Vol.27 No.1
The objective of this study was to compare the correlation on major economic traits at growing and laying stage for Korean Native Chicken and Korean White Leghorn. Total number of chicks analyzed in this study was 110 and divided by Korean Native Chicken (A, B) and Korean White Leghorn (C, D). The days at first egg in Korean Native Chicken was 155 days which was 16 days longer than those of Korean White Leghorn (p < 0.05). Egg weight at first egg in Korean White Leghorn was 42.68 g which was heavier than those of Korean Native Chicken to be 35.04 g (p < 0.05). Egg weight at 270 days of age in Korean White Leghorn was also 12.93 kg heavier than those of Korean Native Chicken (p < 0.05). The phenotypic correlation coefficients between an increased amount of shank length and body weight gain were 0.61 ~ 0.66 from 0 ~ 4 weeks of age through 0 ~ 12 weeks of age in Korean Native Chicken and were 0.60 ~ 0.77 from 0 ~ 4 weeks of age through 0 ~ 8 weeks of age in Korean White Leghorn. The phenotypic correlation coefficients among body weight gain, age at first egg, egg weight at 270 days of age, or shank length were highly positive until 0 ~ 12 weeks of age in Korean Native Chicken and were also highly positive until 0~8 weeks of age in Korean White Leghorn. Therefore these results indicated that the age for indirect selection on hens should be at 12 weeks of age for Korean Native Chicken and at 8 weeks of age for Korean White Leghorn. Overall performance during growing and laying stage in Korean Native Chicken was somewhat less than those of Korean White Leghorn. However, each of them has their own characteristics as native genetic resources and should be applied as the evaluation criteria of a native genetic resource.
축산폐수 전처리를 위한 암모니아 탈기공정의 운전조건이 암모니아 제거에 미치는 영향
황규대,조영무,Whang, Gye-Dae,Cho, Young-Moo 한국물환경학회 2004 한국물환경학회지 Vol.32 No.2
Lab-scale experiments have been carried out to investigate ammonia stripping with a modified spray tower for removing ammonia nitrogen from swine wastewater. The operating conditions such as initial pH, temperature, air flow, hole size of distributor determining the diameter of water drops, and influent solids concentration were closely examined focusing on removal efficiency of ammonia. As a result of the experiment, in order to achieve high rate of ammonia removal by the air stripping system, the air flow rate must be supplied at high rate with sufficiently high initial pH, temperature. The optimum operating condition to meet the residual ammonia concentration of 300 mg/L was the initial pH of 11.0 at $35^{\circ}C$ with the air flow rate of 20 L/min. It also showed that the smaller hole size is, the higher removal rate of ammonia is expected. However, when used a small sized distributor (2 mm), the flooding problem at the upper column occurred due to clogging of the hole. With regard to the influent solids concentration, it was showed that the lower concentration of solids, the higher removal rate of ammonia. The removal of particulate materials in influent led to improve the removal efficiency of ammonia, rather than to control the operating condition including initial pH, temperature, and air flow. The empirical correlation between KLa and operating parameters would be driven as, $K_{La}=(0.0003T-0.0047){\cdot}G^{0.3926}{\cdot}L^{-0.5169}{\cdot}C^{-0. 1849}$. The calculated $K_{La}$ from proposed formula can be used effectively to estimate the optimum reaction time and to calculate the volume of modified spray tower system.
김욱,조영무,Kim, Wook,Cho, Young-Moo 한국콘텐츠학회 2022 한국콘텐츠학회논문지 Vol.22 No.10
이 연구는 군사훈련으로 발생하는 소음이 군사시설 주변에 거주하는 주민들의 삶의 만족도에 미치는 영향을 확인하기 위해 시행되었다. 2017년 군사시설 주변에 거주하는 성인 주민 904명을 대상으로 설문을 시행하였다. 대상자들의 삶의 만족도 점수는 총 5점 만점에 3.17점 수준으로 선행연구에 비해 낮은 수준으로 확인되었다. 삶의 만족도 영향요인을 분석하기 위해 종속변수로 삶의 만족도, 독립변수로 인구사회학적 요인과 신체적 피해 경험 요인, 그리고 정신적 피해 경험 요인을 선정하여 회귀분석한 결과 인구사회학적 요인으로는 월평균 가구소득(coef.=0.09, p<0.001), 정신적 피해 경험 요인으로는 정서불안(coef.=-0.34, p<0.001)과 스트레스(coef.=-0.05, p<0.001)가 삶의 만족도에 영향을 미치는 것으로 분석되었다. 이 연구는 군사시설 주변 지역에 거주하는 주민들의 삶의 만족도 향상을 위한 정책 수립에 기초 자료로 활용될 수 있을 것으로 기대된다.
포유류배양세포 동결보존에 있어 Lactamide의 효과
김현(Hyun Kim),조영무(Young Moo Cho),고응규(Yeoung-Gyu Ko),성환후(Hwan-Hoo Seong) 한국생명과학회 2014 생명과학회지 Vol.24 No.11
DMSO는 배양포유류세포 동결보존의 동결보호제로써 일반적으로 사용 되어져 왔지만, DNA 메틸화 및 히스톤의 수식에 의해 일부 세포에서는 분화를 일으키는 것으로도 알려져 있다. 동결보존시의 배양세포의 안정된 분화 형질유지에는 메틸화를 일으키는 DMSO 이외의 동결보호제의 사용이 필요하다. 세포독성이 낮고, 동물정자동결 보존에 효과적인 것으로 알려진 아미도 화합물이 동일하게 포유류의 배양세포의 동결보존에서 동결보호작용이 있는지를(8종류의 아미드 화합물) 배양 마우스 혈관내피세포를 이용해 조사했다. 조사한 아미드 화합물 중에 아세트아미드와 락트아미드의 2종류가 배양세포에 대해서 동결보호작용이 있고, 가장 효과적인 것은 농도가 1.5 M의 락트아미드이다. 배양세포의 동결보존에 관해서는 삼투압 스트레스를 받지 않을 필요가 있기 때문에, 1.5 M 락트아미드 용액을 제작 시, 용매를 각 희석율의 PBS로 하고, 삼투압을 바꾼 동결 보존액에 동결세포의 생존율을 조사했다. 그 결과, 0.4배 농도의 PBS가 삼투압 스트레스를 가장 낮고 생존율이 가장 높음을 확인했다. 동결보존배지에 고 분자량재료를 첨가하면 세포생존율이 개선되는 것이 알려져 있기 때문에 BSA, HES, 데키스트란의 효과를 조사했다. 그 결과, 락트아미드를 이용한 동결보존배지는 0.4× PBS를 이용한 1.5 M 락트아미드용액에 1%의 BSA를 첨가한 경우, DMSO의 동결보호작용에 필적하는 동결보호작용을 나타내는 것을 확인했다. While dimethyl sulfoxide (DMSO) is the most commonly used cryoprotectant agent in the cryopreservation of cultured mammalian cells, it has been reported to cause differentiation of some cell lines by DNA methylation and associated histone modifications. To avoid the side effects of DMSO in cryopreservation, other agents might be more appropriate for maintaining the stable differentiation of cultured cell phenotypes through cryopreservation. All cryoprotectants should be highly soluble in water and display low cell toxicity. Cryoprotective agents have been shown to be effective in animal sperm preservation, and eight types of amides were examined in the cryopreservation of cultured mouse endothelial cells. Among the amides examined, acetamide and lactamide were effective cryoprotectants for cultured mammalian cells. The most effective concentration of lactamide, 1.5 M, had an even lower cryoprotective ability than 1M DMSO. Because successful cryopreservation of cultured cells is hampered by osmotic stress, the adequate ionic concentration was determined by diluting phosphate-buffered saline (PBS) in the 1.5M lactamide solution. The most effective concentration was 0.4×PBS, which minimized osmotic stress during the cryopreservation of cultured cells. As the addition of high molecular weight materials in cryopreservation media improves the viability of cells, the effects of bovine serum albumin (BSA), hydroxyethyl-starch (HES), and dextran were examined. The best combination of lactamide-based media for cryopreservation was found to be 1.5 M lactamide in 0.4×PBS with 1% BSA.
유전 및 육종 : 한우의 초음파 측정 형질과 도체 형질의 유전모수 추정
김형철 ( Hyeong Cheol Kim ),조영무 ( Young Moo Cho ),이상민 ( Sang Min Lee ),양보석 ( Boh Suk Yang ),김종복 ( Jong Bok Kim ),연성흠 ( Seung Heum Yeon ),이승환 ( Seung Hwan Lee ),당창권 ( Chang Gwon Dang ),전기준 ( Gi Jun Jeon ) 한국동물자원과학회(구 한국축산학회) 2012 한국축산학회지 Vol.54 No.5
본 연구는 한우 번식우와 거세우의 도체형질과 초음파 측정형질 의 유전모수를 추정하여 도체형질과 초음파 측정형질 간의 관계를 알아보기 위하여 실시하였다. 한우 암소에 있어서 초음파 등지방두께의 유전력은 0.43이었고, 초음파 등심단면적의 유전력은 0.23 그리고 초음파 근내지방도는 0.32이었다. 한편, 한우 암소 도체형질의 유전력은 등지방두께는 0.33, 등심단면적이 0.13 그리고 근내지방도는 0.33으로 분석되었 다. 한우 암소에 있어서 초음파 측정 형질 간 유전상관은 초음파 등지방두께: 초음파 등심단면적에서 -0.19, 초음파 등지방두께: 초 음파 근내지방도는 -0.61이었고, 초음파 등심단면적: 초음파 근내 지방도는 -0.36으로 각 형질 간 부의 유전상관을 보였다. 표현형 상관에 있어서는 초음파 등지방두께: 초음파 등심단면적에서 0.03, 초음파 등지방두께: 초음파 근내지방도는 0.13이었고, 초음파 등심 단면적: 초음파 근내지방도는 0.26으로 분석되었다. 한우 암소에 있어서 초음파 측정 형질과 실제 도체형질 간 유전 상관은 등지방두께 0.97, 등심단면적 0.94 그리고 근내지방도 0.92 로 매우 높은 정 (+)의 상관을 나타내었고, 초음파 측정형질과 실제 도체형질 간 표현형상관에 있어서도 등지방두께 0.90, 등심단면적 0.86 그리고 근내지방도 0.81로 높은 정 (+)의 상관계수가 추정되 었다. 그리고 암소에서 나타나는 이러한 결과는 거세우 자료에서나 암소와 거세우를 통합한 자료에서도 일관되게 나타나고 있다. 본 연구에서 초음파 측정치와 실제 도체에서 측정한 값 들 사이 에 유전적으로나 표현형적으로 높은 수준의 정 (+) 상관이 존재하 는 본 연구 결과는 육질 개량을 위한 간접 선발의 도구로 초음파 측정 자료를 활용하는 것이 가능할 것이며 한우의 도축 결과를 상 당히 정확한 수준으로 예측하는 것이 가능하므로 사양관리 측면에 Kim et al. ; Genetic Parameters for Ultrasound and Carcass Traits in Hanwoo -3 3 6- 서도 큰 활용 가치가 있을 것으로 판단한다. This study was conducted to estimate genetic parameters for ultrasound and carcass traits in Hanwoo. Heritabilities and genetic and phenotypic correlations were estimated for carcass and ultrasound measurements collected from Hanwoo cows (n=312) born at Hanwoo experiment station. Traits evaluated were eye muscle area (EMA), backfat thickness (BF), marbling score (MS) from carcass, and ultrasound eye muscle area (UEMA), ultrasound backfat (UBF), and ultrasound marbling score (UMS). Parameters were estimated using multi-trait animal models byderivative-free restricted maximum likelihood procedures. Estimated heritabilities for UBF, UEMA and UMS were 0.43, 0.23 and 0.32, while heritabilities for BF, EMA and MS were 0.33, 0.13 and 0.33 in fattened cows, respectively. Genetic correlations between ultrasound and carcass measurements were estimated to -0.19, -0.61, and -0.36 for UBF: UEMA, UBF: UMS, and UEMA: UMS in fattened cows, respectively. Phenotypic correlations between ultrasound and carcass measurements were 0.03, 0.13 and 0.26 for UBF: UEMA, UBF: UMS, and UEMA: UMS in fattened cows, respectively. As for the steer, genetic correlations between ultrasound and carcass measurements were 0.36, -0.80 and 0.27 for UBF: UEMA, UBF: UMS, and UEMA: UMS in steers, respectively. Phenotypic correlations between ultrasound and carcass measurements were 0.13, 0.07 and 0.41 for UBF: UEMA, UBF: UMS, and UEMA: UMS in steers, respectively. In conclusion, this finding would be very useful to implement into Hanwoo breeding program.
침전지 내장형 산화구법에서 침강특성과 질소 제거효율에 미치는 간헐포기 싸이클시간비의 영향
이현동(Hyun Dong Lee),조영무(Young Moo Cho),정원식(Won Sik Chung) 한국물환경학회 1998 한국물환경학회지 Vol.14 No.4
This research was to evaluate the characteristics of organic material, nitrogen removal, and settling with HRT and to find the proper ratio of aeration and deaeration time for intermittent aeration process on nitrogen removal in the intrachannel oxidation ditch which was modified oxidation ditch and designed the capacity of 2 ㎥/day. The results were showed that the removal efficiencies of BOD, COD_(Mn), SS and N were about 90%, 90%, 93% and 50%, respectively. The major characteristics of settling and removal efficiency were not showed by the changes of HRT and intrachannel type. In case nitrogen removal, the rate of nitrification showed more than 93%, and denitrification rate was 30∼60%. But the efficiencies of settling and organic removal are equal to or higher than thouse of conventional oxidation ditch. Therefore, the most advantages of intrachannel oxidation ditch are lower construction cost which caused from the reduction of area and feasibility of O&M Management than the conventional oxidation ditch.