한우와 샤로레 교잡에 의한 체중 및 체형변화에 관한 연구

설동섭 ( Dong Sup Sul ) 한국축산학회 1981 한국축산학회지 Vol.23 No.2

The study was conducted to find out the effects of mating systems and environmental factor. on the live weight gain of the crossbred from Charolais x Korean native cattle in order to establish the reasonable scheme for spreading the crossbred cattle. The crossbred and the native cattle raised in the Ganghwa Island, Gyeonggi province were measured body weight, withers height, hip height, pine height, body length, chest width, chest depth, rump length, hip width, Churl width, pine width, shank circumference and chest girth, and the farmer`s feeding and management conditions were checked and analyzed from March to October in 1980. The results obtained are summarized as follows: 1. The body weighty of the cattle at the age of 6 months were significantly different between the crossbred and the native cattle (p$lt;0.01) as 208.11 ㎏ in the crossbred bulls and 140.00㎏ in the native bulls, and 180.81㎏ in the crossbred heifers and 108.67㎏ in the native heifers. The body weights at the age of 12 months showed significant difference; between the crossbred and the native cattle (p$lt;0.01) as 404.06㎏ in tire crossbred bulls and 296.60㎏ in the native bulls, and 336.18㎏ in the crossbred heifers and 180.14㎏ in the native heifers. 2. The body measurements of pine height, body length, hip width, shank circumference and chest girth showed significant differences between the crossbred and the native cattle at the age of 6 months. The body measurements at the age of 12 months such as pine height, body length and thud width were different significantly between the crossbred and the native cattle.

특별심포지움 ; 쇠고기 생산자원으로서의 한우

설동섭(Dong Sub Sul),이문연(Moon Yeoun Lee) 한국동물자원과학회(구 한국축산학회) 1994 한국축산학회 심포지움자료집 Vol.- No.-

Crosses Between Korean Native Cattle and Hereford ; 1 . Comparison of Korean native cattle , Hereford and Korean Hereford crossbred on calf performance to weaning

설동섭 ( D S Sul ),N/A ( B T Ryu ) 한국축산학회 1968 한국축산학회지 Vol.9 No.2

The data consisted of records of 35 straightbred and crossbred matings of Korean and Hereford cattle, collected over a 2-year period, were analyzed by least squares procedures to estimate the amount of heterosis from breed crosses. This procedure adjusted calf measurement data for the environmental effects of year-season of birth, sex and age of dam. The number of cows exposed to mating varied for breeds because the number of Hereford cows was not good enough for planned straightbred mating. The most important finding was about 10% advantage in calves weaned from crossbred matings, indicating heterosis for average daily suckling gain and weaning weight. Birth weights of crossbred calves were 8.4% heavier than those of average straightbred ones, although this difference was not significant.

한국의 가축개량 사업

설동섭 ( Dong Sup Sul ) 한국축산학회 1976 한국축산학회지 Vol.18 No.4

N/A

닭의 경제형질에 대한 유전력 및 유전상관에 관한 연구

정선부,설동섭,탁태구,김상철,이기만 ( S . B . Chung,D . S . Sul,T . Y . Tak,S . C . Kim,K . M . Lee ) 한국축산학회 1973 한국축산학회지 Vol.15 No.3

The purpose of this study was to evaluate the value of initial egg weights as selection criterion of laying hens for improvement of egg production performance. Data here used came from records of 406 white leghorn hen progenies produced by hierachal mating of 44 sires and 201 dams at three different hatching stages, which were maintained at Livestock Experiment Station. The data were analysed by the method of variance component analysis to estimate heritabilities, maternal variance, on 5 economic traits and genetic, phenotypic and environmental correlations among them. The results obtained were as follows: 1. The heritability estimates were 0.549 for body weight at first egg, 0.500 for age at first egg, 0.160 for initial egg weight, 0.398 for matured egg weight and 0.429 for egg number to 500 days. 2. The fraction of the total variance which were due to the maternal effect was 0.175 for body weight at first egg, 0.204 for age at first egg, -0.058 for initial egg weight, 0.140 for matured egg weight and 0.095 for egg number to 500 days. 3. The genetic correlations of body weight at first egg with age at first egg, initial egg weight, matured egg weight and egg number to 500 days were -0.503. 0.300, -0.186 and -0.105, respectively. The genetic correlations of age at first egg with initial egg weight, matured egg weight and egg number to 500 days were 0.501, -0.238 and -1.969. The genetic correlations of initial egg weight with matured egg weight and egg number to 500 days were 0.493 and -0.537. There was 0.068 of genetic correlations between matured egg weight arid egg number to 500 days. On the basis of the results obtained in this study, it is recommented that for the effective improvement of egg weight, selection should be practiced for initial egg weight.

Saanen 종과의 누진교잡에 의한 재래산양 개량시험 제4보 . 재래산양과 Saanen 종 산양의 교잡종에 대한 잡종강세추정

이길왕,설동섭 ( Kil Wang Lee,Dong Sup Sul ) 한국축산학회 1981 한국축산학회지 Vol.23 No.2

The study was conducted to obtain some genetic information on crossbred. from crossbreeding of Korean native goats and Saanen goats. Eight hundred and seventy head, of purebred and crossbred goats raised at the Livestock Experiment Station from 1969 to 1975 were investigated to get the data on their body weight, body measurements and milk yield. Those data were analysed to estimate the additive and non-additive effect; as well as maternal effects by different mating systems. The results obtained are summarized as follows ; 1. The additive effects on body weight, withers height, body length, cheat girth and milk yield in single crossing(SN) of Korean native goats and Saanen goats were estimated 86.54, 106.89, 104.95, 98.44, and 89.41%, respectively, and non-additive effects 13.46, -6.89, -4.95, 1.56 and 10.59%, respectively. 2. In the second generation of F₁ back-crowed to Saanen breed for grading up S (SN) the additive, non-additive and maternal effect, were estimated 82.26, 5.94 and 11.80% for body weight, 102.10, -3.13 and 1.02 for withers height, 105.00, -2.35 and -2.64% for body length, 99.32, 0.77 and -0.09% for chest girth, 105. 11, 4.38 and -9. ~19$quot;/o for milk yield, respectively. 3. In the third generation of S (SN) back-crossed to Saanen breed for grading up S (SSN) non-additive and maternal effects were estimated 8-1.17, 2.92 and 12.91% for body weight, 101.66, -1.5% and -0.13% for wither; height, 102.58, -1.13 and -1..15% for body length, 101.24, 0.38 and -1.62% for chest girth, 103.73, 1.88 and -5.6% for milk yield, respectively.

Saanen 과의 누진교잡에 의한 재래산양 개량 시험 제1보 Saanen 과 재래산양의 교잡종에 대한 월령별 체중변화

이길왕,최광수,설동섭,이기만 ( K . W . Lee,K . S . Choi,D . S . Sul,K . M . Lee ) 한국축산학회 1973 한국축산학회지 Vol.15 No.4

The data from 112 purebred and crossbred goats produced by matings of Korean native goats and Saanen, which were investigated at Livestock Experiment Station since 1963, were analysed by least square method to investigate changes of body weights of the native goats by grading up with Saanen. This procedure adjusted the measurement data for environmental effects of year of birth, age of dam and litter size. The results obtained were as follows; 1. The body weight was measured and adjusted at birth, weaning, 12 and 18 months of age as 1.83㎏, 6.99㎏, 14.51㎏ and 18.90㎏ in Korean native goats, 2.98㎏. 12.25㎏, 25.49㎏ and 36.93㎏ in purebred Sannen, 2.69㎏, 11.14㎏, 23.03㎏ and 29.27㎏ in the first filial generation, and 2.78㎏, 11.85㎏, 24.77㎏ and 36.19㎏ in the second graded generation, respectively. 2. The body weights of first filial and second generation were heavier than those of native goats through all months of age. The increment of body weight in the first filial generation to the native goats was 0.86㎏ at birth, 4.15㎏ at weaning, 8.50㎏ at 12 months and 10.37㎏ at 18 months of age. In the second generation the increment of body weight was 0.94㎏, 4.85㎏, 10.26㎏ and 17.29㎏, respectively. 3. The differences of body weight between purebred Saanen and the first generation were 0.28㎏ at birth, 1.11㎏ at weaning 2.4㎏ at 12 months and 7.6㎏ at 18 months of age, but significant difference was found only at 18 months of age (p$lt;0.01). The body weight of the second generation was slightly lighter by 0.20 to 0.75㎏ than that of purebred Saanen through all months of age. 4. The second generation was heavier than the first generation by 0.08㎏ at birth. 0.71㎏ at weaning, 1.73㎏ at 12 months and 6.92㎏ at 18 months of age, but significant difference was found after 18 months of age (p$lt;0.05).

한우정자의 일반성장 , 보존성 및 내동성에 관한 연구

임경순,서국성,김중계,설동섭,이용빈 ( Kyung S . Im,Kug S .Suh,Jung K . Kim,Dong S . Sul,Yong B . Lee ) 한국축산학회 1975 한국축산학회지 Vol.17 No.3

Semen were collected from 20 Korean bulls raised in Kyunggi Province with artificial vagina and quality, preservability in liquid state with and without glycerol and freezability were investigated. The results obtained in this study were summarized as follows: 1. Volume of semen, initial sperm motility index, number of sperm per ㎖ of semen, abnormality, pH and mounting times till ejaculation was 4.4㎖, 83.7, 10.3×10^8, 13.6%, 6.4 and 2.2, respectively. 2. In the case of liquid semen stored at 5℃ for 7 days, sperm motility index of diluted semen with glycerol was higher than that of diluted semen without glycerol. 3. Freeze-thawed semen which was stored at 5℃ for 6 days decreased slightly its sperm motility index during 1 and 2 days, but rapidly thereafter. 4. Forty-five percentage of the bull ejaculated showed more than 41 sperm motility index after freeze-thawing.

토끼의 수정란 이식에 있어서 난세포 분열기와 이식부위에 관한 연구

김중계,서국성,신원집,오연각,설동섭,김상철,이용빈 ( J . K . Kim,G . S . Suh,W . J . Shin,Y . K . Oh,D . S . Sul,S . C . Kim,Y . B . Lee ) 한국축산학회 1974 한국축산학회지 Vol.16 No.1

This experiment was carried out to study a suitable method of fertilized ova transfer in the rabbit. A total of 160 ova at 2 to 16 cell stages or at 16 cell to morula stages from superovulated donors were transferred at the rate of 8 per animal to the fallopian tubes and uterus of 20 recipient females, mated 24 hrs. earlier to vasectomised male. Irrespective of the site of transfer, the proportion of ova developing to term following 16 cell to morula stage transfers was more than that following 2-to 16 cell stage transfers. And uterus transfers were more successful than fallopian transfers in both 2 to 16 cell stages and 16 cell to morula stages. The results with 16 cell to morula stage transfers at the uterus were better than those in any other groups. Fourteen of 20 recipients became pregnant, of which il produced a total of 32 offsprings, and litter size averaged 2.9 with variation from 1 to 6.

한국형 젖소 유전능력 평가방법의 개발

도창희(Chang Hee Do),설동섭(Dong Sup Sul),이정규(Jung Gyu Lee),유한종(Han Jong Yoo) 한국축산학회 1994 한국축산학회지 Vol.36 No.3

A BLUP animal model genetic evaluation system was developed to evaluate milk yield. fat yield and fat percentage by taking into account characteristics of the Korean Holstein cattle population. Records of all lactations for each cow were included in the analysis. In order to he included in genetic evaluation, sire and dam of bulls should have two or more progeny in the identification file and imported hulls or semen should have records of daughter, in Korea. The numbers of records and animals tested and evaluated in Korea Animal Improvement Association and Dairy Cattle Improvement Center of National Livestock Cooperative Federation were 41.333 and 24,539, respectively. Solutions for fixed genetic group, random herd year season, additive genetic, and permanent environmental effects of the proposed models were obtained by the iterative conjugate gradient method for a sparse linear system. Fixed genetic groups included nationality of unknown parents, which were form Korea. U.S., Canada, and other countries. Instead of using the element of inverse of the coefficient matrix, accuracy of additive genetic effects were iteratively estimated a, in the USDA animal model except for excluding contributions from sire-herd distribution.