RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      • 좁혀본 항목

      • 좁혀본 항목 보기순서

        • 원문유무
        • 음성지원유무
          • 원문제공처
          • 등재정보
          • 학술지명
          • 주제분류
          • 발행연도
          • 작성언어
          • 저자

        오늘 본 자료

        • 오늘 본 자료가 없습니다.
        더보기
        • 무료
        • 기관 내 무료
        • 유료
        • KCI등재

          육용종웅계의 사양방법이 체성장 및 성 성숙에 미치는 영향

          연성흠,이규승,정일정,정선부 한국가금학회 1986 韓國家禽學會誌 Vol.13 No.2

          This experiment was conducted to find out the effects of the six different feeding methods on the development of body weight, testis, comb and pituitary gland, and the sexual maturity of White Plymouth Rock cockerels. From hatching to 22 weeks of age, the weights of whole body, testis, comb and pituitary gland, and the histological changes of testis and the semen characteristics were checked every other week. The results obtained in this expeniment were as follows: 1. The growth rates of the self-feeding groups were faster than those of the limited feeding groups (70 percent of the self-feeding) by about 2 weeks. The weights of testis and comb showed the most marked increase at 20 weeks of age in the self-feeding groups and at 22 weeks of age in the limited feeding groups, respectively. 2. The weights of pituitary gland from hatching to 22 weeks of age at all observation weeks were not recognised significantly among the compared groups except 4, 14 and 16 weeks of age. 3. Correlations between week of age, body weight, testis, comb and pituitary gland, in the course of 22 weeks, were highly significant. 4. The diameters of lumina and tubules in the seminiferous tubules increased very slowly until 10 weeks of age. They showed the most marked increase at 12 weeks of age in the self-feeding groups and at 14 weeks of age in the limited feeding groups, and then continuously increased until 32 weeks of. age. 5. Primary spermatocytes appeared at first at 8 weeks in the all treatment groups, Secondary spermatocytes appeared at first at 10 weeks in the self-feeding groups and at 12 weeks in the limited feeding groups. At 14 weeks of age spermatids and spermatozoa were found at first in the self-feeding groups but spermatids were found in the limited feeding groups. 6. Age of the first ejaculation was between 14 and 16 weeks of age in the all treatment groups. The Average semen. volume and sperm concentration ranged from 0.1-0.2$m\ell$/ ejaculate and 5.6-9.8${\times}$10$\^$8/ sperm/$m\ell$ at the age of the first ejaculation but 0.30-0.35$m\ell$/ ejaculate and 22.4-42.7${\times}$10$\^$8/ sperm int at the 20 weeks of age in the all treatment groups. 본 시험은 6가지 다른 사양방법이 White Plymouth Rock 육용종 웅계의 생체중, 정소, 계관 그리고 뇌하수체의 발육 및 성성숙에 미치는 영향을 구명하기 위하여 부화후부터 22주령까지 2주간격으로 생체중, 정소, 계관 그리고 뇌하수체의 중량이 조사되었으며, 또한 정소조직과 정액성상이 조사되었다. 그 얻어진 결과를 요약하면 다음과 같다. 1. 생체중, 정소, 계관의 발육은 10주령 이후부터 무제한급이군들이 제한급이군들(무제한급이군들의 70%급이)보다 2주 더 빠름을 나타내었다. 정소 및 계관의 급증시기는 무제한급이군들에서 20주령이었고, 제한급이군들에서 22주령이었다. 2. 뇌하수체의 무게는 부화후부터 22주령까지 4주령, 14주령, 16주령을 제외하고 각 주령별, 각 처리군간에 유의성이 나타나지 않았다. 뇌하수체의 중량은 주령이 경과하면서 완만한 증가를 나타내었다. 3. 22주령까지에서 주령, 생체중, 정소, 계관 및 뇌하수체간에는 고도의 유의적인 상관관계를 나타내었다. 4. 세정관의 관경과 강경은 부화후부터 10주령까지 점진적으로 증가되다가 무제한 급이군들에서는 12주령부터 제한급이군들에서는 14주령부터 급증하기 시작하였고, 그 후에도 22주령까지 계속증가되었다.

        • KCI등재

          육용종웅계(肉用種雄鷄)의 사양방법(飼養方法)이 체성장(體成長) 및 성성숙(性成熟)에 미치는 영향(影響)

          연성흠,박창식,김영묵,Yeon, Seong Heum,Park, Chang Sik,Kim, Young Mook 충남대학교 농업과학연구소 1986 Korean Journal of Agricultural Science Vol.13 No.1

          본(本) 시험(試驗)은 6가지 다른 사양방법(飼養方法)이 White Plymouth Rock 육용종웅계(肉用種雄鷄)의 생체중(生體重), 정소(精巢), 계관(鷄冠), 그리고 뇌하수체(腦下垂體)의 발육(發育)및 성성숙(性成熟)에 미치는 영향(影響)을 구명(究明)하기 위하여 부화(孵化)후부터 22 주령(週齡)까지 2주(週)간격으로 생체중(生體重), 정소(精巢), 계관(鷄冠), 그리고 뇌하수체(腦下垂體)의 중량(重量)이 조사(調査)되었으며, 또한 정소조직(精巢組織)과 정액성상(精液性狀)이 조사(調査)되었다. 그 얻어진 결과(結果)를 요약(要約)하면 다음과 1. 생체중(生體重), 정소(精巢), 계관(鷄冠) 발육(發育)은 10주령(週齡)이후부터 무제한급이군(無制限給餌群)들이 제한급이군(制限給餌群)들 무제한급이군(無制限給餌群)들의 70% 급이(給餌)) 보다 2주(週)더 빠름을 나타내었다. 정소(精巢) 및 계관(鷄冠)의 급증시기(急增時期) 무제한급이군(無制限給餌群)들에서 20 주령(週齡)이었고, 제한급이군(制限給餌群)들에서 22 주령(週齡)이었다. 2. 뇌하수체(腦下垂體)의 무게는 부화(孵化)후부터 22 주령(週齡)까지 4 주령(週齡), 14주령(週齡), 16주령(週齡)을 제외(除外)하고 각(各) 주차별(週差別), 각(各) 처리군간(處理群間)에 유의성(有意性)이 나타나지 않았다. 뇌하수체(腦下垂體)의 중량(重量)은 주령(週齡)이 경과하면서 완만한 증가(增加)를 나타내었다. 3. 22주령(週齡)까지에서 주령(週齡), 생체중(生體重), 정소(精巢), 계관(鷄冠) 및 뇌하수체간(腦下垂體間)에는 고도(高度)의 유의성(有意性)인 상관관계(相關關係)를 나타내었다. 4. 세정관(細精管)의 관경(管俓)과 강경(腔俓)은 부화(孵化)후부터 10 주령(週齡)까지 점진적(漸進的)으로 증가(增加)되다가 무제한급이군(無制限給餌群)들에서는 12 주령(週齡)부터 제한급이군(制限給餌群)들에서는 14 주령(週齡)부터 급증(急增)하기 시작하였고, 그후에도 22주령(週齡)까지 계속 증가(增加)되었다. 5. 8주령(週齡)에는 각(各) 처리군(處理群)에서 제일차(第一次) 정모세포(精母細胞)가 처음으로 출현(出現)하였으며, 10주령(週齡)에는 무제한급이군(無制限給餌群)들에서 제이차(第二次) 정모세포(精母細胞)가 그리고 12주령(週齡)에는 제한급이군(制限給餌群)에서 제이차(第二次) 정모세포(精母細胞)가 처음으로 출현(出現)하였다. 14 주령(週齡)에는 무제한급이군(無制限給餌群)들에서 정자세포(精子細胞)와 정자(精子)가 첫 출현(出現)했으나, 제한급이군(制限給餌群)들에서는 정자세포(精子細胞)만 첫 출현(出現)했다. 6. 최초(最初)의 사정(射精)은 모든 처리군(處理群)들에서 14주령(週齡)과 16주령(週齡) 사이에 나타났으며, 평균(平均) 1회(回) 사정량(射精量)과 정자농도(精子農度)는 최초사정시(最初射精時) 0.1~0.2ml과 $5.6{\sim}9.8{\times}10^8/ml$의 범위를, 20주령시(週齡時)에는 0.30~0.35ml과 $22.4{\sim}42.7{\times}10^8/ml$의 범위를 나타내었다. This experiment was conducted to find out the effects of the six different feeding methods on the development of body weight, testis, comb and pituitary gland, and the sexual maturity of White Plymouth Rock cockerels. From hatching to 22 weeks of age, the weights of whole body, testis, comb and pituitary gland, and the histological changes of testis and the semen characteristics were checked every other week. The results obtained in this expeniment were as follows: 1. The growth rates of the self-feeding groups were faster than those of the limited feeding groups (70 percent of the self-feeding) by about 2 weeks. The weights of testis and comb showed the most marked increase at 20 weeks of age in the self-feeding groups and at 22 weeks of age in the limited feeding groups, respectively. 2. The weights of pituitary gland from hatching to 22 weeks of age at all observation weeks were not recognized significantly among the compared groups except 4, 14 and 16 weeks of age. 3. Correlations between week of age, body weight, testis, comb and pituitary gland, in the course of 22 weeks, were highly significant. 4. The diameters of lumina and tubules in the seminiferous tubules increased very slowly until 10 weeks of age. They showed the most marked increase at 12 weeks of age in the self-feeding groups and at 14 weeks of age in the limited feeding groups, and then continueously increased until 22 weeks of age. 5. Primary spermatocytes appeared at first at 8 weeks in the all treatment groups. Secondary spermatocytes appeared at first at 10 weeks in the self-feeding groups and at 12 weeks in the limited feeding groups. At 14 weeks of age spermatids and spermatozoa were found at first in the self-feeding groups but spermatids were found in the limited feeding groups. 6. Age of the first ejaculation was between 14 and 16 weeks of age in the all treatment groups. The average semen volume and sperm concentration ranged from $0.1{\sim}0.2m{\ell}/ejaculate$ and $5.6{\sim}9.8{\times}10^8sperm/m{\ell}$ at the age of the first ejaculation but $0.30{\sim}0.35m{\ell}/ejaculate$ and $22.4{\sim}42.7{\times}10^8sperm/m{\ell}$ at the 20 weeks of age in the all treatment groups.

        • 재래돼지 수정란의 동결보존에 관한 연구

          연성흠,허태영,강석진,서국현,최선호,이장희,박성재,류일선,김남철 한국발생생물학회 2003 한국발생생물학회 학술발표대회 Vol.2003 No.1

          멸종위험성이 높은 재래돼지를 유전자원으로서 안전하게 보존하고 유전적 다양성을 유지하기 위해 체내수정란의 동결보존 방법을 수행하였다. 재래돼지의 과배란유기는 altrenogest를 1일 20mg씩 18일 경구투여하고 PMSG 500~l,000IU 근육주사후 80시간에 hCG 500~750IU를 근육주사하였다. 발정이 관찰된 개체는 발정개시후 12시간과 24시간에 자연교배 또는 액상정액을 이용하여 2회씩 수정시켰다. 최종 수정후 5일째에 외과적으로 개복수술

        • 우리나라 긴꼬리닭의 계통분류학적 추정

          연성흠,조창연,김종대,진현주,이승수,김영근,상병돈 한국가금학회 2006 한국가금학회 정기총회 및 학술발표회 Vol.23 No.-

          This study was carried out to ascertain phylogenetic status of long-tail chicken which found recently in Korea and was presumed to be a kind of Korean Natives. 10 loci microsatellites were analysed for 449 birds of 11 groups and 2 region of mitochondrial DNA were sequenced for 135 birds of the same groups, that consist of 3 introduced breeds and 8 Korean Natives including 3 long-tail chicken. In mean numbers of alleles per locus(MNA) for microsatellites, long-tail chicken were smaller (2.60~3.20) than the others, but in heterozygosities, were higher(0.4087~0.5375) than others that were the same level of MNA. And in the neighbor joining bootstrap tree drawing by Nei's standard distance, they made a cluster with some Korean Native groups. All of the nucleotide sequences of mitochondrial cytochrome b gene and D-loop were classified into 23 haplotypes. In long-tail chicken, the haplotypes were 3 kinds, and were different among the groups (LTA, LTB and LTD). Resultly, it was supposed that 3 groups of the long-tail chicken be all a kind of Korean Natives.

        • Концептуальные подходы к проблемам безопасности и сотрудничества в Северо- Восточной Азии

          연성흠 고려대학교 러시아 CIS연구소 2013 Acta Russiana Vol.5 No.-

          '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

          In this paper. the current level of the security and intergovernmental cooperation in Northeast Asia after tile Cold War is analyzed. The analyses put forward in this paper may now be given a role to settlement of a major security concern in Northeast Asia and promotion of peace and common prosperity in Northeast Asia as a whole. Enhancing the role of Northeast Asia in the international relations in the presence of security problems actualizes the need for active dialogue on cooperation in this region. Fears of a possible negative impact of globalization on national economies economies the authorities of Northeast Asia actively expand primarily traditional cooperation. and develop anti-crisis measures on a collective basis, not only with neighboring states in the region, but also with the new member states of the East Asian region. overcoming the traditional barriers. In general. the economic interdependence in Northeast Asia has reached an extremely high lev el compared with the period of the Cold War. The possibility of expanding economic relations between East Asian countries in the XXI century also ordained as a vector of its foreign trade. Strengthening of intra-regional economic interdependence in the economic field contributes to maintaining of strategic stability in Northeast Asia, to development of cooperation in security matters. Against such a background. in recent years there has been in the field of security cooperation fundamentally new direction - agreement of cooperation with various countries to demilitarize the relations between them, strengthening of international peace and stability, and joint efforts of the countries concerned to resist attempts of violation. However. while in Northeast Asia as a whole has developed a basic strategic configuration of the relations. between the major powers no unanimity on the issue of the non-use of military force to resolve mutual differences. In many ways, so the relationship of regional cooperation on security issues has become more complex. In fact, at the same time the countries of the region cooperate and compete with each other. After the Cold War, the problem of strategic security and stability in the region are far from being solved: is saved for tension in the relations between China and Taiwan. North and South Korea. potentially conflicting issues exist in Japan's relations with China and both Koreas. In view of the above factors, need to develop a realistic program for the formation of multilateral structures through the gradual coordination of the positions of the states in the Northeast Asia on specific issues affecting their security. The main purpose of this program should be become a access to a regular dialogue, that is the six-party talks involving Russia. U.S., China, Japan, DPRK and ROK.

        • KCI등재

          돼지 난포란 유래 체외수정란 생산에 대한 제요인의 영향 4 : 체외발달 배양액의 종류와 배양액 교체가 체외발달에 미치는 영향

          연성흠,최선호,조창연,한만희,손동수,이규승 韓國受精卵移植學會 2004 한국동물생명공학회지 Vol.19 No.3

          본 연구는 체외성숙/체외수정 유래의 돼지 난자를 이용하여 체외발달시 배양액의 종류나 교체에 따른 영향을 구명하고자 수행하였다. mNCSU-23에서 체외성숙시킨 다음 mTBM에서 체외수정시킨 난자를 목적에 따라 두 가지로 나누어 실험한 결과는 다음과 같다. 1. 체외성숙/체외수정란을 NCSU-23에서 배양액 교체없이 7일 동안 배양하거나 CZB에서 4일 배양한 다음 Pig-MEM으로 옮겨서 나머지 3일간 배양한 결과, 난분할율은 배양액간 차이를 보이지 않 This study was carried out to examine the effects of development media and those change on in vitro development (IVD) of porcine oocytes matured and fertilized in vitro. Putative embryos, which were matured in vitro in modified NCSU-23 (mNCSU-23) supplemented with 10% porcine follicular fluid (pFF) and were fertilized in mTBM, were developed in vitro as the experimental scheme. The results are as follows. When porcine putative embryos were cultured in vitro in NCSU-23 or CZB/Pig-MEM, the percentage of oocytes cleaved was not different between two systems, but the percentage of blastocysts in NCSU-23 was significantly higher than in CZB/Pig-MEM (P<0.05). And when porcine putative embryos were cultured in vitro in NCSU-23 during 7 days with or without changing media at day 5, which was supplement with or without 10% fetal bovine serum(FBS), the percentage of oocytes cleaved, blastocysts at day 6, and the cell number of ICM, TE and total of blastocysts at day 7 were not different among three treatments. As a result of this study, it is supposed that NCSU-23 be more favorable, to develop porcine embryos derived from IVM/IVF, than CZB/Pig-MEM, but that demonstration on the effects of changing medium with fresh one stand in need of the more experiments.

        맨 위로 스크롤 이동