돼지 성조절에 관한 연구

이용빈,오봉국,서국성,오성종,임경순 ( Yong B . Lee,Bong K . Ohh,Guk S . Suh,Sung J . Oh,Kyong S . Im ) 한국축산학회 1979 한국축산학회지 Vol.21 No.1

This study was conducted to investigate the sex ratio between the natural born pigs and B-body test sperm, which the data were obtained from a total of 1.242 pigs born at Swine Farm, Jeil Sugar Co. And it was attempted the sedimentary and galvanic separation. of X-and Y-bearing spermatozoa with 4 boar semens at College of Agriculture, Seoul National University. The results obtained were as follows; 1. The natural sex ratio of pigs born was about 50%, and B-body test sperm was a-so about 50%. It was, therefore, statistically non-significant differences of the sex ratio between the natural born pigs and B-body test sperm. 2. The B-body test sperm obtained from Fractionated semen was similar to B-body sperm of control 3. Spermatozoa of swine were separated into different fractions by sedimentation. B-body rest sperm to anode was 53.70%, and the B-body from bottom was 33.43%. 4. The swine semen could separate X- and Y-bearing sperm by galvanization without interfering the sperm liability. In galvanization of sperm, the percentage of the B-body sperm induced to anode was 60.4%, while the sperm to cathode was 28.15%. This experiments with seminal galvanization and sedimentation for the separation of X- and Y-bearing sperm have been exclusively conducted with swine. Since the data presented in this report were still unstable, more detail research would, so far, be needed.

돼지의 거세방법이 생체 및 도체에 미치는 영향

이용빈,송계원,오성종 ( Yong B . Lee,Kai W . Song,Sung J . Oh ) 한국축산학회 1979 한국축산학회지 Vol.21 No.4

This experiment was carried out to find the best castration method for economical body gain and the improvement of the pork quality by preventing the sex odor. Including three female pigs, twelve heads of pigs, 50days old, were assigned into four groups, three pigs each by the completely randomized design. Except female group for control, the rest three groups were treated by the different castration; complete castration, cryptorchidism (short scrotum), and partial castration, and fed for 21weeks under the sane feeding condition. During the feeding period, the body gain and he feed consumptions were checked periodically for daily gain and feed efficiency. After the finishing of feeding, all the pigs were slaughtered and the carcass data, were collected and analyzed. The results obtained were summarized as follows; 1. The average total gain of completely castration, cryptorchidism, partial castration and female groups were 73.17, 81.50, 78.57 and 60.33kg respectively. However, there were non-significant differences for daily gain among each groups. 2. Feed consumption was non-significantly differed between four groups and they shown the same tendency in feed efficiency and body weight gain. 3. Dressing percentage was non-significant difference among the treatments. The whole average of dressing percentage was 68.3% 4. The ratio of carcass width(W) to carcass length (L) was about 41% in cryptorchidism and complete castration, but 46% in partial castration. 5. The backfat thickness indicated slightly lower in cryptorchidism (2.33㎝) than partial castration (2.63㎝), which was slightly lower than commonly-fattend swine. In loin eye muscle area, cryptorchidisn (31㎠) showed a little greater than complete castration (29㎠) and partial castration (30㎠).

서포트벡터회귀 기법을 이용한 순차적 근사 최적설계

오상엽(Sangyup Oh),이용빈(Yongbin Lee),최동훈(Dong-Hoon Choi) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.11

Support Vector Regression (SVR) is getting popular due to its higher accuracy and lower standard deviation than those of existing approximate methods. However SVR has been rarely used for design optimization while it has been applied to many studies such as time series prediction, and statistical learning theory. In this study, an SAO method based on SVR developed. We adopt inherited Optimal Latin Hypercube Design (OLHD) for Design of Experiment (DOE) and Trust Region (TR) concept for model management. Finally, in order to show the accuracy and efficiency of the proposed method, several sample problems are solved.

생쥐와 흰쥐배의 세적 분리에 관한 연구

오성종,임경순,이용빈 ( S . J . Oh,K . S . Im,Y . B . Lee ) 한국축산학회 1983 한국축산학회지 Vol.25 No.4

This study was carried out to investigate the cloning of mouse and rat embryos. Three-hundred females of DDY and ICR strain mice and fifty females of Wistar strain rats were superovulated by intramuscle injection of PMS and HCG. Two-, four-, and eight-cell embryos were dichotomized in vitro by fine glass, needle with hand following the papaya protease digestion of zona pellucida. The results obtained were summarized as follows; 1. The mice were superovulated by injections of 5 IU of PMS and HCG. One, two, and four to eight-cell embryos were mostly obtained from the oviduct at 18 to 24, 48 and 72 hours after injection of HCG. In rat, at 48 hours after HCG, two-cell embryo was 66%, but at 72 hours, four-cell embryo, 44% and eight-cell embryo, 40%, respectively. 2. The percentage of mouse and rat showed superovulation after PMS and HCG treatment was 44 and 30%, respectively. The average number of embryos ovulated per head was 13.7 ± 4.6 and 25.9 ± 8.3 in mouse and rat. There was highly significant differences in the ovulation response and the number of ova ovulated per head between breeds. 3. The rate of dichotomized two-cell embryo in control, zona softened and removed was 0, 48 and 95% in mouse and 0, 44 and 58% in rat, respectively. Rate of the embryos dichotomized without damaged blastomere was 40 and 93% in zona softened and removed, respectively. 4. The rate of dichotomized four-cell mouse embryo was 0, 64 and 96% in control, zona softened and removed and the rate of embryo dichotomized with out damaged blastomeres was 36 and 46%, respectively. The rate of dichotomized four-cell rat embryo in control, zona softened and removed was also 0, 56 and 63%, respectively. The dichotomized rate of embryo was lower in rat than that in mouse. 5. The dichotomized rate of 8-cell mouse embryos was 60 and 82% in zona softened and removed and showed lower dichotomized rate than that of two- and four-cell embryos. In eight-cell mouse embryo, the rate of embryo dichotomized with out damaged blastomees was 17 and 34% in zona softened and removed.

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.

홀몬처리가 산양의 다태아 분만에 미치는 영향

김창근 ( C K Kim ),김상철 ( S C Kim ),이용빈 ( Y B Lee ),설동섭 ( D S Sul ),오연각 ( Y K Oh ),서국성 ( G S Suh ),김중계 ( J K Kim ) 한국축산학회 1972 한국축산학회지 Vol.14 No.2

The ovulation rate and follicle development were observed in 18 goats by laparotomy on the third day after injection of 500, 750 or 1,000 I.U. PMS. Fecundity was also observed in other 17 goats treated with 500, 750 or 1,000 I.U. PMS and mated naturally on the 17th day of the estrous cycle. The ovulation rate was 1.5 (1∼3), 2.5 (1∼4) and 3.2 (2∼5) in the goats receiving 500, 750 or 1,000 I.U. PMS, respectively, and it was found significantly (P$lt;0.05) mare in 1,000 I.U. PMS than in 500 I.U. PMS. However, there were no significant differences in the number of follicles with 5mm or larger diameter and hemorrhagic follicles between the groups. Fecundity was 2.0, 2.25 and 2.0 in the goats receiving 500, 750 and 1,000 I.U. PMS, respectively. The single, twin, triplet and quadruplet births were 23.5%, 52.7%, 17.7% and 5.9%, respectively. One still birth and 2 premature births were observed. The shorter gestation period of goats and the lighter birth weight of kids resulted from the higher fecundity.