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RISS 인기검색어
- 검색키워드
- 저자 : S. W. Han(韓成郁) (검색결과 27 건)
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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.
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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.
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육성기사료의 양적제한급여가 겸용종계의 생산성에 미치는 영향
상병찬,강만석,김동곤,한성욱 ( B . C . Sang,M . S . Kang,D . K . Kim,S . W . Han ) 한국축산학회 1980 한국축산학회지 Vol.22 No.5
The effect of feed restriction during the rearing Period on the reproductive Performance was studied using 400 birds of dual purpose breeder pullet (Rhode Island Reds). During the rearing period (7∼21 week of age) feed was affered 80%, 70%, 60% of feed consumption of full feed group, All groups were full feed during laying period after 21 week of age. The results abtained are summarized as follows ; 1. Viability was not significantly affected by the feed restriction in either the rearing period or laying period of the experiment. 2. Body weight of 60% restricted group at 22 weeks of age was 75% of control group. At 72 weeks of age it was 95% of that of full feed group and not yet recovered completely. 3. Feed consumption of restricted groups from 22 to 72 weeks of age was some what more than that of control group, but total feed consumption per hen of all age was significantly different according to the feed restriction. 4. The degree of sexual maturity as measured by age at 50% egg Production was delayed from 9 to 27 days compared to control group according to the restricted intensity during rearing period. 5. Hen-day egg production (22-72 weeks of age) was range from 67.23 to 68.79% among treatment. There was not significant difference among treatment. 6. Average hen-housed egg production over 53g per bird to the end of the experiment was 154.2 eggs for control and 159.7 eggs for 80%, 157.4 eggs for 70%, 166.9 eggs for 60% restricted group. There was significant difference at 5 % level among treatment. 7. Average egg weight was significantly increased in restricted groups relative to control. The difference between restricted groups and control was highly significant average egg weight. 8. In the economic analysis, feed cost for 1 hatchable egg (over 53g) was in the highest with the control group and was decreased as the degree of feed restricted intensity. On the basis of the results of this study, it was suggested that in dual purpose breeder the feed restriction should be fed 60% of control group during the rearing period (7-21 weeks of age) and the body weight at 22 weeks of age should be kept at the level of 75 of the control in other to get better performance during the laying period.
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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.
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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.
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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.
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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.
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