• 한국초지조사료학회지
• /
• 제21권4호
• /
• pp.233-246
• /
• 2001

본 연구는 국산 야생화초지(Native wildflower p pasture: NWP, turf grass 6종 + 국산야생화 11종) 및 외국산 야생화초지(Introduced wildflower pasture; IWP, turf grass 6종 + 외국산야생화 9종)를 조성하여 계절별 개화시간, 개화지속 정도, 꽃의 색깔, 식생변화 및 초지에서의 동물상 등을 조사 분석하여 야생화초지의 개발에 필요한 초종 선발 및 구성, 혼파조합 등의 기초자료를 얻고자 실시하였다. 시험은 충남대학교 농과대학 초지 시험포장에서 1997년 8월부터 2000년 12월까지 수행하였으며 시험결과는 다음과 같다. 1) 야생화의 개화는 5월에서 9월까지 연속적으로 유지되었으며 꽃색깔은 비교적 다양하게 유지 되었다. 국내산 야생화의 경우 개화기간이 가장 긴 것은 벌노랑(Lotus corniculatus var. Japonicus)이었고, 원추리(Hemerocallis fulva), 범부채(Belamcanda chinenis), 벌개미취(Aster koraiensis) 등은 발아 및 정착이 느려 문제가 있었다. 외국산 야생화의 경우 국내산 야생화에 비해 초기생육 및 정착이 양호했으며, 꽃색깔도 화려하게 유지되었으나 기생초(Coreopsis tinctoria), 서양톱풀(Achillea millefolium), 원추천인국(Rudbeckia bicolor) 등은 초고가 크거나 강력한 지하경으로 우정되는 경향이었다. 2) 야생화 초지(NWP, IWP)의 적합한 turf grasses 는 계절별로 고른 식생을 유지한 tall fescue, perennial ryegrass, Kentucky bluegrass라 생각된다. 3) 국산 야생화초지의 식생분포는 톱풀(Achillea sibirica) > 벌노랑이(Lotus corniculatus var. Japonicus) > 패랭이꽃(Dianthus chinensis) > 질경이 (Plantago a asiatica) > 민들레(Taraxacum platycarpum) > 제비꽃(Viola mandshurica) > 벌개미취(Aster koraiensis) > 얼치기완두(Vicia tetasperma) > 매듭풀(Lespedeza s st$\psi$ulacea) > 원추리(Hemerocallis fulva) 순이었다. 봄철과 여름철에는 톱풀이, 가을철에는 벌노랑이가 가장 높은 분포를 나타냈으며 계절별로 일정한 분포를 유지한 것은 민들레였다. 한편, 외국산 야생화초지는 서양톱풀(Achillea millefolium) > 기생초(Coreopsis tinctoria) > 끈끈이대나물(Silene armeria) > 금계국(Coreopsis lanceolata) > 원추천인국(Rudbeckia bicolor) > 서양오이풀(Sanguisorba officinalis) > 수레국화(Centaurea cyanus) > 데이지( (Chrysanthemum leucanthemum) > 서양패랭이꽃(Dianthus petraeus) 순 이었다. 봄철에는 끈끈이대나물이, 여름철에는 서양톱풀이 가을철에는 기생초가 가장 높은 식생분포를 나타내었다. 3년 평균 총 야생화의 식생분포는 외국산 야생화초지가 국 산 야생화초지에 비해 2.27배 정도 높은 분포를 보여 다양한 국산야생화 초종도입과 선발 및 순도 높은 종자의 확보가 국산 야생화초지를 보급을 위해 우선적으로 선결해야할 과제라 하겠다. 4) 야생화 초지(NWP, IWP)는 관행 혼파초지나 하번초 혼파초지에 비하여 동물상이 다양하고 많게 분포되었으며 그중 외국산 야생화초지의 동물 개체수가 가장 많게 나타났다. 이상의 결과를 종합할 때, 야생화 초지는 봄부터 가을까지 야생화가 지속되었고, 양서류 및 곤충의 개체 수가 증가되었던 것으로 보아 야생화 초지의 공익적인 측면에서의 활용 가능성도 클 것으로 기대된다고 하겠다. 그러나 국산 야생화초지를 널리 보급하기 위해서는 무엇보다도 자생 야생화의 생육특성을 고려하여 다양하게 선발해야하고 재배증식을 통한 순도 높은 총자의 확보와 보급이 선행되어야 할 것으로 사료된다.

• 음성과학
• /
• 제8권2호
• /
• pp.133-148
• /
• 2001

Focus and information structure are closely related with the distribution of pitch accents. A focused word conveys new information and bears a pitch accent. A content word can usually get a pitch accent, but it can be deaccented if it is mentioned earlier in the discourse. In this paper, we test how English native speakers and Korean learners of English realize pitch accents according to focus and information structure of a sentence. The production experiment shows that English native speakers give a pitch accent to narrow-focused items, deaccenting all the other items of the sentence. For VP broad focus, native speakers give a pitch accent either to both the verb and its complement or to the complement only. On the other hand, it is found that Koreans give pitch accents to most content words regardless of focus and information structure. Moreover, the perception experiment confirms that Koreans' intonation patterns, which are not appropriate in terms of focus and information structure, may jeopardize listeners' comprehension. This paper shows that Korean speakers have little knowledge about focus and information structure for intonational realization, and that such notions should be applied to teaching of English intonation.

• 한국축산식품학회지
• /
• 제37권3호
• /
• pp.385-391
• /
• 2017

Our study analyzed the carcass properties of 170 Korean native pigs in relation to carcass weight and back-fat thickness to provide general data for the production and distribution of high quality pig meat. The 70-74 kg group showed highest yield (73.41%). The ${\geq}80kg$ group showed the highest thickest back-fat (24.13 mm) (p<0.05). The ${\geq}80kg$ group showed the best quality grade (1.00). Back-fat thickness showed significant differences in the weight among groups (p<0.05). The ${\geq}25mm$ group showed the highest carcass weight (75.93 kg). The thickest back-fat group (${\geq}25mm$) showed the highest yield (73.03%). There were significant differences in back-fat thickness among groups (p<0.05), and the ${\geq}25mm$ group showed the highest thickness back-fat (27.60 mm). We found a strong positive correlation between carcass weight and back-fat thickness (r=0.346) as well as meat quality grade (r=0.739). Backfat thickness had a relatively strong positive correlation with meat quality grade (r=0.444). Therefore, there are required to manage the breeding through selection of excellent native species for increasing their carcass weight and enhance meat quality.

• 대한수의학회지
• /
• 제41권2호
• /
• pp.139-146
• /
• 2001

This study was carry out to identify the distribution of calcium binding proteins; calbindin(CB), calretinin(CR) and parvalbumin(PA) in the suprachiasmatic nucleus(SCN) of the Korean native goat by immunohistochemical methods. The expression of substance P(SP), calcitonin gene-related peptide(CG-RP), neuropeptide Y(NPY), vasoactive intestinal polypeptide(VIP) and galanin(GAL) were also investigated. CR-immunoreactivity was found in both of the cell bodies and fibers in the SCN, which the CB-immunoreactivity was observed only in the fibers. The immunoreactivity for VIP was observed in both the cell bodies and fibers, but SP-, NPY, GAL-immunoreactivities were only found in the fibers. CGRP-immunoreactivity was not seen in cell body and fibers. These results suggest that VIP, SP, NPY and GAL play a neuromodulatory or/ and neurotransmitter roles in cooperation with CB and CR in SCN of the Korean native goat.

• 한국동물위생학회지
• /
• 제34권3호
• /
• pp.291-296
• /
• 2011

The karyotype of the domestic dog is widely accepted as one of the difficult mammalian karyotypes to work. In contrast to many other animals, knowledge about the canine karyotype is quite sparse. The dog has a total of 78 chromosomes; all 76 autosomes are acrocentric in morphology and show only a gradual decrease in length. But appear to be quite small and difficult to identify unambiguously. To purchased standardization of chromosome in Korea native dog, there were analyzed by conventional trypsin/Giemsa staining (GTG-banding techniques), and were compared with 4, 6, 8, 11, 13, 17 chromosome. There were no variations in karyotypes which were analyzed by conventional GTG-banding techniques, but differences were observed in G-banding patterns with Sapsaree, Jindo, Gyeongju DongGyeong dogs, Welshi-Corgi. It is not clear that these disagreements in G-banding patterns between strains of dog were caused by chromosome polymorphism or a difference in interpretation. Comparative analysis of the distribution patterns of conserved segments defined by dog paints in the genomes of the Korea native dogs demonstrates that their differences in the karyotypes of these three species could have resulted from acrocentric banding patterns.

• 한국환경과학회지
• /
• 제16권6호
• /
• pp.751-761
• /
• 2007

This study is carried out through ecological situation of native Bupleurum latissimum habitats and the research of environmental conditions for conservation of native sites, restoration of alternative habitats and preliminary data for application of useful medicinal plant. Native Bupleurum latissimum habitats were distributed on lower and middle part of the mountain from Altitude 54m to 185m, and the directions of slope were researched as usually northen and western slope. As a result of phytosociological research in 12 stands of native Bupleurum latissimum habitats, they were seperated to two communities(Bupleurum latissimum typical community and Bupleurum latissimum-Galium spurium community) in accordance with containable rate of the organic matter and soil hardeness. Soil condition is usually constituted as loamy sand and clay loam. Bupleurum latissimum is propagated in valuable soil conditions. Bupleurum latissimum lives with Morus bombycis, Reynoutria sachalinensis in Bupleurum latissimum typical community and Thalictrum aquilegifolium, Stellaria media, Hedera rhombea etc. is appeared with Bupleurum latissimum in Bupleurum latissimum-Galium spurium community. Especially, companion species were researched as Aster glehni, Dystaenia takeshimana and so on. The flora of vascular plants in this study is 44 families, 88genus 82species, 2 subspecies, 14 varietas, 4 forma and total 102 taxa. Plants of compositae occupied 10.78% among whole of them.

• Asian-Australasian Journal of Animal Sciences
• /
• 제24권12호
• /
• pp.1637-1643
• /
• 2011

Korean native chickens are a very valuable chicken population in Korea and their prices are higher than that of commercial broilers. In order to discriminate two commercial Korean native chicken populations (CCP1 and CCP2), single nucleotide polymorphisms (SNPs) from mitochondrial (mt) DNA D-loop sequences and LEI0258 marker polymorphisms in the major histocompatibility complex (MHC) region were investigated. A total of 718 birds from nine populations were sampled and 432 mtDNA sequences were obtained. Of these, two commercial Korean native chicken populations (363 birds) were used for investigation of their genetic relationship and breed differentiation. The sequence data classified the chickens into 20 clades, with the largest number of birds represented in clade 1. Analysis of the clade distribution indicated the genetic diversity and relation among the populations. Based on the mtDNA sequence analysis, three selected SNPs from mtDNA polymorphisms were used for the breed identification. The combination of identification probability (Pi) between CCP1 and CCP2 using SNPs from mtDNA and LEI0258 marker polymorphisms was 86.9% and 86.1%, respectively, indicating the utility of these markers for breed identification. The results will be applicable in designing breeding and conservation strategies for the Korean native chicken populations and also used for the development of breed identification markers.

• 대한수의학회지
• /
• 제27권1호
• /
• pp.141-151
• /
• 1987

A total of 1200 Korean native cow and 240 dairy cow genitalia were collected during the slaughtering process in Seoul and Kwang Ju abattoir and were examined from July 1985 to March 1986. Ovarian follicles were classified as cystic if the diameter was greater than 2.5cm or if follicles were multiple. In order to investigate the ovarian cysts, anatomical and histological examinations were performed. In addition progesterone and estrogen level in different types of cystic follicular fluid and serum were measured by radioimmunoassay. The results were summerized as follows: 1. The incidences of ovarian cysts were 2.0% in Korean native cow and 7.9% in dairy cow. 2. In distribution of cysts in the left, right and both ovaries, the most encountered ovary was right one. The frequency was 45.8% in right ovaries, 33.4% in left ovaries and 20.8% in both ovaries in Korean native cow. On the contrary the frequency was 42.1% in right ovaries, 31.8% in both ovaries and 26.3% in left ovaries in dairy cow. 3. Six speciemens (25.0%) of Korean native cow and six specimens (31.6%) of dairy cow were associated with corpora lutes in both ovaries. 4. The luteinization of theca layer was most significant in the group 2Aa (71.4%) and 2Ba (38.5%) which associated with no granulosa cell and corpora lutea in the same cystic ovaries. 5. Correlation of progesterone concentration between cystic fluid and serum was found only in the group 2Aa and 2Ab (r=0.86). Progesterone and estrogen concentrations in cystic fluid were closely related to the degree of degeneration of granulosa cell layer. The cystic follicles that consist of thickened theca and degenerated granulosa cell layers contained a large amount of progesterone, and small amount of estrogen. In conclusion, various types of ovarian cysts with various levels of progesterone and estrogen were observed in Korean native cow.

• 한국동물위생학회지
• /
• 제44권1호
• /
• pp.27-33
• /
• 2021

Q fever is a worldwide zoonotic disease caused by Coxiella burnetii. Domestic ruminants are considered to be major source of human infection. The aim of this survey was to investigate seroprevalence of C. burnetii in ruminants in Gwangju area. A total of 1,000 samples (serum and lactoserum) were collected from 987 Korean native cattle, 5 Korean native goats, 2 beef cattle, 6 bulk-tank milk from each dairy farm in Gwangju area from January to October 2020 and analyzed by ELISA. The seroprevalence of C. burnetii in bulk-tank milk from each dairy farms was 50.0%. Korean black goat and beef cattle had negative antibody test results for C. burnetii. The seroprevalence of C. burnetii in Korean native cattle in Gwangju area was 7.1% and was higher in female (7.8%) than in male (3.4%) (P=0.024). The seroprevalence of C. burnetii in Korean native cattle appeared to increase with age (3.8% in 1 year-old, 7.1% in 3 year-old, and 10.7% in more than 5 year-old) (P<0.001). The seroprevalence of C. burnetii of Korean native cattle increased in spring and May was the highest in particular (P<0.001). As the distribution and density of tick-habitat are expected to increase due to climate crisis, this survey highlights the need for monitoring C. burnetii in domestic ruminants, including surveillance of C. burnetii infection in people working for livestock industry.

• 한국콘텐츠학회논문지
• /
• 제16권9호
• /
• pp.267-275
• /
• 2016

의 식 주와 건강, 즉, 인류가 지속적인 삶을 유지하는데 끊임없이 이용되는 생물종은 다양한 곳에 분포되어 있다. 이를 보호하고 자원으로써의 가치를 높이기 위해 전 세계 많은 국가에서는 자원발굴, Database구축 등 다양한 노력을 하고 있으며 그 결과 생물다양성협약이 만들어졌다. 이를 지키기 위해 각 국은 자생생물을 보호하고 주권확립을 위해 최소한의 노력인 DB 구축을 진행하고 있다. 본 연구에서는 이러한 노력의 일환으로 기 수집된 국립공원 지역 일대의 전통지식 자원의 데이터 양식을 통일화 시키고 자연어의 표준화 작업을 통해 자생생물자원의 DB를 구축하였다. 이를 기반으로 전통지식의 분포, 이용방법, 종의 종류 등을 분석해 보았다. 그 결과, 대부분 '식(食)'에 많이 이용되고 있었으며 다양한 질병치료 및 증상호전을 위해서 여러 생물이 다양한 형태로 사용되고 있음을 확인할 수 있었다.