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상병찬,한성욱,오봉국,정선부 ( B . C . Sang,S . W . Han,B . K . Ohh,S . B . Chung ) 한국축산학회 1983 한국축산학회지 Vol.25 No.5
This study was conducted to improve the interior egg quality with a total of 6,093 eggs, laid at 351 Single Comb White Leghorns and 326 Rhode Island Reds, produced at National Livestock Breeding Station from March 1, 1979 through July 30, 1980. The results obtained are summarized as follows; 1. The average albumen height of the eggs at first eggs, 300 and 500 days of age was 8.32, 7.51 and 6.74㎜ in the S.C.W. Leghorn and 8.04, 6.94 and 6.05㎜ in the R.L.Red, and the Haugh units at first egg, 300 and S00 days of age was 90.92, 79.74 and 76.25 in the S.C.W. Leghorn, and 88.54, 80.02 and 74.56 in the R.I. Red, also the egg shell thickness at first egg, 300 and 500 days of age was 0.383, (1.364 and 0.334㎜ in the S.C.W. Leghorn and 0.354, 0.332 and 0.327 in the R.I. Red. 2. The heritability estimates in the S.C.W. Leghorn and R.I. Red were 0.398∼0.847 and 0.306∼0.634 for albumen height, 0.162∼0.594 and 0.125∼0.485 for Haugh units, 0.185-0.339 and 0.176∼0.402 for egg shell thickness, respectively. 3. The genetic correlation coefficients between the interior egg qualities were as follows. In the S.C.W. Leghorn and R.I. Red, the coefficients between albumen height and Haugh units, 0.432∼0.845 arid 0.397∼0.974; between albumen height and egg shell thickness, 0.046∼0.226 and 0.068∼0.197; between Haugh units and egg shell thickness, 0.089∼0.364 and 0.165∼0.327 ; respectively.
산란계 개량에 관한 연구 1 . 순계의 생산능력 비교시험
상병찬,강만석,김동곤,한성욱 ( B . C . Sang,M . S . Kang,D . K . Kim,S . W . Han ) 한국축산학회 1980 한국축산학회지 Vol.22 No.5
This experiment was carried out to test performance of the domentic purebred fowl. The purpose of this experiment was to compare the productive performance of the purebred fowl to obtained basic materials for laying performance improvement by means of cross breeding. In this study, 1, 200 chickens was used-that is 6 purebred strains White Leghorns(720 chickens), 1 purebred strain Rhode Island Reds (120 chickens), 1 purebred strain New Hampshires (120 chickens). The results obtained in this study are as follows; 1. The average Viability of brooding, rearing and laying period was best for Rhode Island Reds and E. Strain among White Leghorns. 2. The average body weight at 8 weeks, first egg production days, 500days of age in W. L. was 546.86g. 1431.37g, 1738.34g, respectively, but there was no significant difference among. purebred strains of W. L. 3. The average Sexual maturity of 50% egg production was 170.58 days in W. L., but R. I. R. and S. N. H. were 189.94 days, 182.42days, respectively. There was significant difference at 1 % level among Strains. 4. The average hen-housed egg production was 214.16 eggs in W. L., but R. I. R. and S. N. H. were 214.22 eggs, 196.74 eggs, respectively. There was significant difference at 1% level among Strains, but the highest hen-housed egg production (231.84 eggs) was E. Strain among strains. 5. The average egg weight was 54. 48g in W. L, but R. I. R. and .S. N. H. were 56.12g, 54.90g, respectively, The highest egg weight (57.69g) was Coronial Strain of W. L. among strains. There was significant difference at 1 % Level among strains. 6. The average feed requirement was 3.01 in W. L. but R. I. R. and S. N. H. were 3.23, 3.52, respectively the highest feed requirement (2.79) was Coronial Strain of W. L. among strains. There was significant difference at 1 % level among strains. 7. On the basis of the results of this study, the productive performance was best for C. D. E. strains among W. L. and R. I. R.
돈의 산자수 , 이유두수 및 동복자 이유시 총체중에 대한 환경과 품종의 효과
한성욱,김창근 ( S . W . Han,C . K . Kim ) 한국축산학회 1979 한국축산학회지 Vol.21 No.1
This study was conducted to determine the effects of farrowing year, season and number, and mating system on litter size at birth, pig number and total litter weight at weaning in swine. The least square means were estimated on the basis of data obtained from 3,414 litters of Land-race, Large White and their crosses raised at St. Isidore Farm from 1972 to 1977. The results obtained are as follows: 1. The effect of farrowing year on litter size at birth and pig number at weaning was significant at 5% level and there was highly significant difference at 1% level for total litter weight at weaning. 2. The effect of farrowing season was nonsignificant for pig number and total titter weight at weaning except litter size at birth The litter size at birth was largest in fa1l. 3. The litter size at birth was smallest for the 1st parity, but the effects of over 2nd parity were nonsignificant The effects of parity for pig number and total titter weight at weaning 4. The litter size at birth and pig number at weaning from Landrace dams were larger than those from Large White dams. However, the total litter weight at weaning from Large White dams was heavier than that from Landrace dams.
한성욱,박영일,김영호 ( S . W . Han,Y . I . Park,Y . H . Kim ) 한국축산학회 1978 한국축산학회지 Vol.20 No.5
This study was conducted to determine the effects of sex, year of birth, season of birth, and the effects of breed or breed cross on birth weight in beef cattle. The data used in this study were obtained from a total of 1020 calves born at Chedong Farm in Cheju Island from 1974 through 1977. The Augus, Charolais and Hereford and their crosses were used, and the data were analysed by least squares method. The results obtained are as follows. 1. The birth weight of male calves was heavier than that of female calves by about 1.0 ㎏. 2. The effect of year of birth was statistically significant at 1% level. The birth weight of calves was lightest in 1974 when the Farm was in the first year after being established, and was heaviest in 1976. 3. The calves that were born in the spring had the heaviest birth weight, and those born in the fall had the lightest birth weight. 4. The Charolais had the heaviest birth weight of the three purebreds, being heavier than the Hereford by 0.4㎏, and the Angus had the lightest birth weight. Of the three crossbreds compared, the Charolais-Hereford cross had the heaviest birth weight, being heavier than the Hereford by 1.6㎏.
한성욱 ( S W Han ),박영일 ( Y I Park ) 한국축산학회 1971 한국축산학회지 Vol.13 No.4
The coat color records of 6,339 Cheju Cattle and 339 Youngnam Cattle were analyzed to compare the coat color frequency of Cheju Cattle with that of Korean Native Cattle of Youngnam Area, and to examine if the frequency is independent of age and of sex. In Cheju Cattle the frequencies of yellowish brown color were 55.5 and 64.1 percent respectively in the male and female, and those of black color were 32.2 and 25.1 percent respectively. In Youngnam Cattle the frequencies of yellowish brown color were 93.3 and 97.9 percent respectively in the male and female, and those of black color were 1.0 and 1.4 percent respectively. Other colors with spots tended to be more frequent in Cheju Cattle than in Youngnam Cattle. The chi-square tests for the age × coat color table and for the sex × coat color table showed that the age differences in the coat color frequency were insignificant but the sex differences were highly significant. The differences between Cheju and Youngnam Cattle in the coat color frequency Here highly significant.
S. W. Han(韓成郁),B. K. Ohh(吳鳳國),M. Y. Lee(李文演),Y. H. Choi(李正九崔然皓) 한국육종학회 1981 한국육종학회지 Vol.13 No.3
Three commercial breeders of broiler were crossed in a 3×3 diallel to estimate combining ability and to find superior mating system. Total 1,181 progenies measured for 2, 4, 6, and 8 week body weight. Compared with pure strains, crossbred consistently showed heterosis in fertility, hatchability, early body weight and feed efficiency. General and specific combining ability and reciprocal effect all were highly significant for measures of body weight except at 2 weeks of age, while those was significant for feed efficiency only at 2 weeks of age. Superior mating systems were AB, BA and crosses.