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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.
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.
5ml 스트로에 보존한 돼지 액상정액의 정자농도에 따른 수정능력에 관한 연구
박창식(C . S . Park),한성욱(S . W . Han),소중섭(J . S . Soh),김덕임(D . I . Kim),정홍기(H . K . Chung),류창구(C . G . Ryu) 한국축산학회 1992 한국축산학회지 Vol.34 No.2
This experiment was carried out to investigate the fertilizing capacity and optimum sperm concentration of liquid boar semen with BF_5 diluent in 5㎖ maxi-straw. The sperm-rich fraction of each ejaculate was slowly cooled to room temperature by 2 h after collection. Semen was centrifuged for 10 min at 1.500 rpm and the seminal plasma removed by aspiration. Semen was resuspended in BF^5 diluent to provide about 2×10^8 sperm /㎖. 6×10^8 sperm/㎖ and 10×10^8 sperm/㎖. Semen was cooled in a waterbath to 5℃ over a 2 h period and BF_5(+2% glycerol) diluent was added to cooled semen(1:1). Straws were immediately filled with 5㎖ of semen and steel or glass balls were used to seal the ends of the straws. The straws were horizontally placed on a metal rack and stored at 5℃ in a refrigerator. At insemination the straw was rediluted with 80㎖ BTS diluent. The optimum sperm concentration of liquid boar semen in 5㎖ maxi-straw was 50×10^8/5㎖. Farrowing rate and number of pigs horn alive per litter of diluted semen with 50×10^8 sperm concentration stored at 5℃ for 7 days were 85.0% and 10.11. respectively.
한성욱 ( S W Han ),이현종 ( H J Lee ) 한국축산학회 1973 한국축산학회지 Vol.15 No.1
This investigation was conducted from April 1, 1971 to December 31, 1971 to study the body measurements, weaning weight, and dressing percentage of Cheju native cattle, using 99 cows and 21 bulls, 120 heads in all. 1. Cheju cattle were smaller than Korean native cattle in the mainland. For males, the body weight was 314.80±13.85㎏ and 274.30±4.38㎏ for females. For males, the withers height was 117.50±1.28㎝ and 114.43±1.46㎝ for females. The body length for males was 132.6±2.23㎝ and for females 126.30±0.64㎝. 2. The weaning weight of Korean native cattle was similar than that of Cheju cattle, 104.11±1.81㎏, It appears that Cheju cattle are smaller than Korean native cattle due to environmental factors than genetic factors. The considerable environmental factors are working too early, reproducing too soon, and feeding on rough feed. 3. The dressing percentage of the bulls for Cheju cattle was 51.87%. This is lower than that for foreign beef cattle, but nearly the same as for Korean native cattle. 4. The correlation of carcass weight to the combined weights of fore shank, rear shank and other meat is +0.5. 5. The high correlations between carcass percentage and body type were observed for the withers height and hip height. To improve Cheju native cattle to the standard of beef cattle, it appears useful to pay attention not only to chest depth and chest girth, but also to withers height and hip height.
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.