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이용우 ( Y. W. Lee ),최병희 ( B. H. Choe ),송기언 ( K. E. Song ),남중희 ( J. H. Nahm ) 한국잠사학회 1976 한국잠사곤충학회지 Vol.18 No.1
각종 고치의 견층부위별 fibroin 효소분해율의 차이 및 견사물성과의 관계를 구명코자 시험하여 다음과 같은 결과를 얻었다. 1. 각종 고치의 견층부위별 fibroin 효소분해율은 외층에서 내층으로 갈수록 높았다. 2. 이상용견의 견층부위별 fibroin 분해율은 정상견에 비하여 높았으며 옥견>박피견>사용견>정견의 순위를 보이었다. 3. 원종인 잠111과 잠112의 fibroin 분해율 및 sericin 함유량은 교유종인 잠 111×잠112보다 높았다. 4. 인공사료육잠견의 견층부위별 fibroin의 분해율은 외층보다 내층으로 갈수록 증가되었으며 sericin 함유량은 외층에서 내층으로 갈수록 감소되었으나 최내층에서 약간 증가되는 경향을 보이었다. 5. 견층부위별 연편사의 절단강력은 외층에서 내층으로 갈수록 감소되는 경향이었고 이상용견의 절단강역은 정견에 비하여 저하되었다. 6. 견층부위별 fibroin 분해율과 견사의 절단강력과는 부의 상관(r=-0.8)이 인정되고 그 회귀방정식은 y=-0.29x+5.07이었다. The study was carried out to investigate the variations in the fibroin hydrolysis of different cocoon shell layers, and the relationship between the hydrolysis and silk physical property. The obtained results are as follows: 1. The fibroin hydrolyzing ratio was highest at the inner layer of cocoon shell and, next in order, at the middle layer and at the outer layer. 2. The fibroin hydrolyzing ratio of abnormal cocoons was higher than normal cocoon and it was different among them, tile highest was double cocoon, thin shell cocoon and perforated cocoon in order. 3. The sericin content and fibroin hydrolyzing ratio of Jam 111 and Jam 112 was higher than that of Jam 111×Jam 112. 4. The fibroin hydroiyzing ratio of the cocoons fed with the artificial diets was increased at the inner layer. The sericin content of those lessened at the inner layer, however, it slightly increased at the most inner layer more than at the inner layer. 5. The breaking strength of the degummed silk fiber of different cocoon layers was reduced at the inner layer. The breaking strength of abnormal silk fiber was less than that of normal silk fiber. 6. A negative correlation (r=-0.8) was approved between fibroin hydrolyzing ratio and breaking strength of silk fiber, and the regression line was Y=-0.29x+5.07.
미경산돈에서 교배전 자궁내 정액항원 주입에 의한 산자수 증가에 관한 연구
한기영(K . Y . Han),김창근(C . K . Kim),윤종택(J . T . Yoon),김형태(H . T . Kim),정영채(Y . C . Chung),서경덕(K . D . Seo),연정웅(J . W . Youn),이용우(Y . W . Lee) 한국축산학회 1988 한국축산학회지 Vol.30 No.9
This experiment was conducted to evaluate effect of a single intrauterine infusion of semen or seminal plasma at estrus before mating on subsequent litter traits of crossbred gilts. In addition, presence and level of early pregnancy factor activity (rosette inhibition titre, RITZ in serum of treated gifts and in vitro immunosuppressive activity of these antigens from boars used were tested immunologically to support the results in this experiment. The results obtained were as follows: 1. Semen-infused gifts significantly had a larger litter size (11.4) at birth than controls (9.6), but no significant differences were detected between others. 2. There was a tendency toward increased total pigs born alive, litter weight at birth and number of pigs suckling in antigen-infused gifts, but the differences between treated-gifts and controls were not statistically significant. 3. EPF activity (RIT) before and after mating in previously infused-gifts was 10.7±2.8 in the serum of nonpregnant gifts and 19.3±3.8 in the serum of pregnant gifts. RIT $gt; 14 could be considered evidence of presence of EPF in pregnant gifts. 4. Seminal plasma infusion before mating induced on obvious rise of RIT. RIT at 24 h and 48 h after mating was much higher (18-23 and 21-22) :in semen-and seminal plasma-infused gifts than in controls. RIT at 24 h after mating was found to be positively correlated (r=0.84) to litter size born in 6 gifts. 5. Dialyzed seminal plasma from 4 boars was significantly immunosuppressive at a concentration of 500 ㎍/㎖ than controls and degree of immunosuppression varied among individuals when the concentrations was under 500 ㎍/㎖. Undialyzed semen samples from 3 boars resulted in loss of immunosuppressive activity. These results indicate that infusion of gifts with semen at estrus before mating can be improved reproductive efficiency because of more litter size at birth and sukling pigs than controls and that these antigens had immunosuppressive potential of antilymphocyte serum and immunosuppressive activity to porcine lymphocytes that generate an immune response.