돼지에 있어 산자수 , 동복자생시체중 및 임신기간의 유전력 , 반복력 및 유전상관

백동훈,박영일,오봉국,한성욱 ( D . H . Baik,Y . I . Park,B . K . Ohh,S . W . Han ) 한국축산학회 1974 한국축산학회지 Vol.16 No.2

The heritabilities, repeatabilities, and genetic correlations among litter size, litter weight at birth and gestation length were estimated on the basis of the data obtained from 614 litters (5,547 pigs) of the Landrace raised at the St. Isidore Farm over a 3-year period from the spring of 1969 to the winter of 1971. The effects of the year and season of birth and parity were estimated by the least square method. These estimates were used for the statistical adjustment of the data for the differences in certain environmental factors. The heritabilities and genetic correlations among the traits studied were estimated from the sire components of variance and covariance. The repeatahilities were estimated from the intra-class correlation among repeated measurements of the traits for the same dam. The results obtained are as follows. 1. The estimates of beritabilities were 0.097±0.061 for the total number of pigs born, 0.204±0.107 for the gestation length, 0.124±0.090 for the number of pigs born alive and 0.059±0.065 for the litter weight at birth. 2. The estimates of repeatabilities were 0.136±0.102 for the total number of pigs born, 0.779±0.034 for the gestation length, 0.129±0.099 for the number of pigs born alive, and 0.091±0.148 for the litter weight at birth. 3. The phenotypic correlation of the total number of pigs horn was 0.037 with the gestation length. 0.932 with the number of pigs born alive, and 0.766 with the litter weight ai birth. The phenotypic correlation of the gestation length was 0.175 with the number of pigs born alive and 0.266 with the litter weight at birth. The phenotypic correlation between tile number of pigs born alive and the litter weight at birth was 0.812. 4. The genetic correlation of the total number of pigs born was 0.188 with the gestation length, 0.955 with the number of pigs born alive, and 0.839 with the litter weight at birth. The genetic correlation of the gestation length was 0.128 with the number of pigs born alive and 0.059 with the later weight at birth. The genetic correlation between the number of pigs born alive and the litter weight at birth was 0.940.

Unusual Rectal Foreign Body: A Golf Ball

Young Joo Park,백동훈,Eun Young Park,김광하,송근암 대한소화기내시경학회 2021 Clinical Endoscopy Vol.54 No.2

우량육용계의 선발을 위한 교잡시험

박영일,백동훈 ( Y . I . Park,D . H . Baik ) 한국축산학회 1973 한국축산학회지 Vol.15 No.4

The purpose of this experiment was to compare the performance of the crosses of seven different stocks to Cornish males for broiler production. The seven stocks used as female parents were White Plymouth Rocks, Columbians, Barred Plymouth Rocks, New Hampshires, Stock D, Stock C, and Stock H. The first four stocks, WR, Columbian, BR, and NH were the pure Strains that had been maintained at the College of Agriculture, Seoul National University. The Stock D was the female parent stock of a broiler stock produced by a Korean Poultry Breeding Farm. The stocks C and D were the commercial chicken of two different broiler stocks imported from abroad. The commercial chicks of the imported Hubbard Broilers were used as the control to compare with the seven different crosses mentioned above. The average body weight at 8 weeks of age was 1,596 grams for the Hubbard Broilers, 1,563 grams for the C×Cornish, and 1,544 grams for the H×Cornish, all of which were significantly larger than those of other stocks compared. The income per bird over the cost of feed and day-old chick was largest for the C×Cornish, followed in rank by the H×Cornish, Hubbard Broilers, D×Cornish, Columbian×Cornish, NH×Cornish, BR×Cornish, and WR×Cornish. The superior performance of the C×Cornish and H×Cornish appeared to be due to the effect of the genes transmitted from their dams. The hens of the Stock C had a higher rate of laying, and had a heavier egg weight than those of the Stock H. The age at 50% production was 196 days for the Stock C, 195 days for the Stock H and 179 days for the Stock D. The average body weight of the hens at 30 weeks of age was about 3.2㎏ for both Stocks C and H.

계란의 내용물과 난각의 특성에 관한 연구

최진호,강원준,백동훈,박홍석 ( Jin Ho Choi,Won Joon Kang,Dong Hoon Baik,Hong Suk Park ) 한국축산학회 1983 한국축산학회지 Vol.25 No.6

A total of 999 eggs, randomly collected from a flock of 2,000 hens of White Shaver strain that had been in production for seven months was tested to investigate interrelationships between egg weight and weight of each fraction of egg and between egg weight and shell quality. Egg weight, weights of yolk, albumen and shell, specific gravity of egg and sheaf thickness were measured for each egg. Percentages of fraction weights out of egg weight were calculated and designated respectively as % yolk, % albumen and % shell. Correlations were also investigated among four parameters involved in shell quality. Following results were obtained. 1. Mean (±SD) weight of total eggs tested was 58.72±4.80 g. and mean weights of fractions were 17.08 g. for the yolk, 35.22 g. for the albumen and 5.21 g. for the shell which were equivalent to approximately 30, 60 and 9% respectively of egg weight. 2. Correlation coefficients of egg weight were 0.89 with albumen weight, 0.54 with yolk weight and 0.53 with shell weight, indicating that variation in egg weight was mainly due to variation in albumen weight and egg weight was less influenced by yolk and shell weights. 3. As egg weight decreased weights of all three fractions also decreased. However, the pace of changing was much greater in albumen weight than in yolk weight, resulting in that % yolk increased as egg weight decreased. 4. There were found positive correlations between egg weight and both shell thickness and egg specific gravity, indicating that as egg size decreased shell quality decreased. 5. High correlation coefficients were observed between any pair of four parameters of shell quality measured, which were shell weight, % shell, shell thickness and egg specific gravity.

Large Jejunal Phytobezoar with Small Bowel Obstruction Treated by Single-Balloon Enteroscopy

Eun Young Park,백동훈,이봉은,김광하,송근암 대한소화기내시경학회 2022 Clinical Endoscopy Vol.55 No.2

BRIEF REPORT

家畜改良의 現況과 問題點

Dong Hun Baik(白東勳),Young Il Park(朴英一),Sun Boo Chung(鄭船富) 한국육종학회 1985 한국육종학회지 Vol.17 No.3

Genetic improvement program for Korean Native Cattle is carried out at the Alpine Experiment Station and at Seosan Cattle Breeding Farm of National Livestock Cooperatives Federation(NLCF). Artificial insemination of dairy cattle is performed by the Animal Improvement Center of NLCF. To solve the problems in cattle improvement, it is desirable to establish uniform improvement program of cattle by the committee, to provide support for breeding researches and to conduct the performance test and progeny test more extensively. Central swine testing station was established in March, 1984 to select and distribute superior breeding stock. Swine improvement program is carried out by ceratin private swine breeding farms. To solve the problems in swine improvement, it is necessary to adopt the policy which will promote the development of superior swine breeding farms, to carry out effective on-farm testing of breeding stock and to provide government support for the Korea Swine Testing Station. During the period from 1965 to 1984, the egg production per hen in layers was improved from 195 to 255 and the average egg weight was increased from 56.6 gr. to 62 gr. In broilers, the average body weight at 8 weeks of age was increased from 1kg to 2.3kg during the period and the feed efficiency was improved from 3.0 to 2.15. To solve the problems in poultry improvement, it is necessary to adopt the policy which will promote the development of breeding programs for domestic stocks and to provide support for the Layer and Broiler Random Sample Test Station.

아르곤 플라스마 응고소작술로 치료한 담관내 유두상 점액 종양

박상규 ( Sang Gyu Park ),백동훈 ( Dong Hoon Baek ),김광하 ( Gwang Ha Kim ),허정 ( Jeong Heo ),송근암 ( Geun Am Song ),안상정 ( Sang Jeong Ahn ),김동욱 ( Dong Uk Kim ) 대한췌담도학회 2017 대한췌담도학회지 Vol.22 No.1

담관내 유두상 점액 종양은 담관내에서 흔히 발견되며, 최근에는 전암성병변으로 인식되어 왔다. 담관내 상피세포의 유듀상 성장과 점액생성 및 그로 인한 간내담관의 확장을 특징으로 한다. 수술적 절제가 악성 변화를 막기 위한 최선의 방법이다. 담관내 유두상 점액 종양에 대한 연구가 증가하고 있지만 수술이외의 치료에 대한 보고는 많지 않다. 우리는 75세 여자 환자가 우연히 담관내 유두상 점액 종양으로 진단 받고 아르곤 플라즈마 응고소작술로 성공적 치료를 받은 경 우를 보고한다. 환자의 나이와 동반질환 등을 고려하여 수술 적 절제보다는 아르곤 플라즈마 응고소작술을 시행하였고, 치료 4주 후 시행한 경피 경간 담도내시경에서 잔여종양의 증거는 없었다. Intraductal papillary mucinous neoplasm of the bile duct (IPMN-B) is frequently found and has recently been recognized as a precancerous lesion leading to invasive carcinoma characterized by papillary growth of the ductal epithelium with rich mucin production and cystic dilatation of the hepatic duct. Surgical resection is the treatment of choice to avoid malignant transformation. Despite a growing number of studies on IPMN-B, there are few reports of its treatment aside from surgery. A 75-year-old woman was incidentally diagnosed as IPMN-B. Considering the patient`s age, comorbidity, and preference, we recommended an argon plasma coagulation (APC) as local ablation therapy rather than surgical resection. There was no evidence of remnant tumor on percutaneous transhepatic cholangioscopy 4 weeks after the ablation of tumor mass by using APC. We report a rare case of IPMN-B successfully treated with APC.

Endoscopic Submucosal Dissection for Superficial Barrett’s Neoplasia in Korea: a Single-Center Experience

주동찬,김광하,이봉은,이문원,백동훈,송근암,이소정,Do Youn Park 대한위암학회 2021 Journal of gastric cancer Vol.21 No.4

Purpose: While the incidence of Barrett’s neoplasia has been increasing in Western countries, the disease remains rare in Asian countries. Therefore, very few studies have investigated the endoscopic treatment for Barrett’s neoplasia in Korea. Endoscopic submucosal dissection (ESD) enables en bloc and complete resection of gastrointestinal neoplastic lesions. This study aimed to evaluate the therapeutic outcomes of ESD for Barrett’s neoplasia in a single center in Korea and to examine the predictive factors for incomplete resection. Materials and Methods: We conducted a retrospective observational study of 18 patients who underwent ESD for superficial Barrett’s neoplasia (dysplasia and early cancer) between January 2010 and December 2019 at Pusan National University Hospital. The therapeutic outcomes of ESD and procedure-related complications were analyzed. Results: En bloc resection, complete resection, and curative resection were performed in 94%, 72%, and 61% of patients, respectively. Histopathology (submucosal or deeper invasion of the tumor) was a significant predictive factor for incomplete resection (P=0.047). Procedure-related bleeding and stenosis were not observed, whereas perforation occurred in one case. During the median follow-up period of 12 months (range, 6–74 months), local recurrence occurred in 2 patients with incomplete resection, one patient underwent repeat ESD, and the other patient received concurrent chemoradiotherapy. The 3-year overall and disease-specific survival rates were 73% and 93%, respectively. Conclusions: ESD seems to be an effective and safe treatment for superficial Barrett’s neoplasia in Korea. Nevertheless, the suitability of ESD for Barrett’s cancer cases should be determined considering the high risk of deep submucosal invasion.

원발성 하부위장관 B세포 림프종의 임상 특징 및 예후

차라리 ( Ra Ri Cha ),백동훈 ( Dong Hoon Baek ),이경원 ( Gyeong Won Lee ),박선자 ( Seun Ja Park ),이종훈 ( Jong Hoon Lee ),박종하 ( Jong Ha Park ),김태오 ( Tae Oh Kim ),이상훈 ( Sang Heon Lee ),김형욱 ( Hyung Wook Kim ),김현진 ( Hy 대한소화기학회 2021 대한소화기학회지 Vol.78 No.6

Background/Aims: This multicenter study reviewed the clinical features and prognosis according to the primary site of involvement and the treatment modality in patients with B-cell primary intestinal lymphoma (PIL). Methods: Among 125 consecutive patients diagnosed with PIL, 100 patients were analyzed. Results: The median age was 59 years, and the male to female ratio was 1.86:1. Diffuse large B-cell lymphoma (66/100, 66.0%) was the most common histological subtype. The estimated 5-year survival rate (5-YSR) was 48.5%. The 5-YSR was similar regardless of the type of primary treatment (chemotherapy alone vs. surgery/chemotherapy, 50.7 vs. 45.3%, p=0.582). A comparison of the survival according to the primary site of involvement revealed a 5-YSR of 32.5% (p=0.027), 64.3% (reference), 46.5% (p=0.113), and 49.8% (p=0.024) for the small intestine, ileocecal region, large intestine, and multiple sites, respectively. Multivariate analysis, however, revealed a low hemoglobin level, advanced Ann Arbor stage, and aggressive histological type to be independent prognostic factors for shorter survival but not ileocecal region involvement. Conclusions: The Ann Arbor stage, hemoglobin level, and histological type were independent prognostic factors for survival, while the primary site of involvement and treatment modality did not affect the prognosis in patients with B-cell PIL. (Korean J Gastroenterol 2021;78:320-327)

고관절 이형성증에서 비구 후염전의 빈도

장재석(Jae-Suk Chang),박재형(Jai-Hyung Park),손현철(Hyun-Chul Shon),백동훈(Dong-Hoon Baek),김지완(Ji-Wan Kim),정광환(Kwang-Hwan Jung),안형선(Hyung-Sun Ahn) 대한정형외과학회 2004 대한정형외과학회지 Vol.39 No.6

목적: 고관절 이형성증에서 비구의 전염각은 증가되어 있는 것으로 알려져 있으나 비구 후염각의 증가가 관찰되는 예들도 관찰된다. 본 연구는 고관절 이형성증에서 비구 염전각을 측정하고, 후염전의 빈도를 알아보고자 하였다. 대상 및 방법: Center-Edge (CE)각이 20° 이하의 고관절 이형성증 28예를 대상으로 하였고, CE각이 정상인 20예를 대조군으로 하였다. 남자는 7예였고 평균 36.2세이었으며, 여자는 21예였고 평균 43.7세였다. 대조군은 남자가 10예였고, 나이는 평균 46.1세이었으며, 여자는 10예였고, 나이는 평균 43.5세이었다. 고관절 이형성증에서 외측 CE각은 평균 2°였으며, false profile view에서 전방 CE각은 평균 1°였다. 전산화 단충 촬영 중 축상 단면에서 4곳(대퇴골두가 나타나기 시작하는 최상부, 근위 1/2중 중간 부위, 중간 부위, 원위 1/2 중 중간 부위)의 염전각을 측정하였다. 결과: 대조군에서는 네 부위의 전염각이 위에서부터 각각 평균 14.0°, 17.5°, 19.3°, 20.3°이었으며, 후염전을 나타내는 경우는 1예가 있었다. 고관절 이형성증에서는 4곳의 전염각이 위에서부터 각각 평균 4.1°’ 10.3°, 16.5°, 19.7°이었으며, 후염 전을 나타내는 경우는 9예가 관찰되었으며 근위부 2곳의 평균이 통계학적으로 유의한 차이를 보였다(p<0.005). 후염전을 보이는 모든 예의 골반 방사선 촬영에서 비구 전방벽과 후방벽이 고관절 중간 부위에서 교차(cross-over)되는 양상을 나타내었다. 결론: 비구의 후엽전이 정상 및 고관절 이형성증에서 관찰되었고, 빈도는 정상에서는 5%이었고, 고관절 이형성증에서는 32%로 의미있게 높았다(p<0.05). 따라서, 비구 이형성증의 절골술에 있어 수술 전 전산화 단충 촬영을 시행하여 후염전 여부를 확인하고 비구 주위 절골술 후 회전 시에 후염전이 증가되지 않도록 해야 한다. Purpose: This study analysed the incidence and the degree of an acetabular retroversion in a dysplastic hip. Materials and Methods: 28 cases of dysplastic hips, in whom the CE angle was <20 degrees, and 20 cases of control group with a normal CE angle were enrolled in this study. Four cuts among the CT images (most superior cut of the femoral head, middle cut of the proximal half, middle portion, and middle cut of the distal half of the femoral head) were used to measure the acetabular anteversion. Results: In the control group, anteversion of four cuts (form the cranial to caudal) were observed with an average of 4.1, 10.3, 16.5, 19.7°, and there was one case with a retroversion. In the dysplastic hips, the average anteversion angles were 4.4, 11.0, 17.9, 20.8°, and 9 cases with retroversion were discovered. In all cases showing retroversion, an overlapping of the acetabular anterior and posterior wall (cross-over sign) was observed on the simple pelvis AP radiography. Conclusion: There was a 32% incidence of acetabular retroversion, which was much higher than the control group (p<0.05). Therefore, in order to prevent an over-correction of the retroversion, which may cause impingement, the presence and the amount of retroversion must be recognized using CT before performing a periacetabular osteotomy.