• Journal of Animal Science and Technology
• /
• v.54 no.1
• /
• pp.9-14
• /
• 2012

The purpose of this study was to estimate heritabilities and genetic correlations for reproductive and productive traits and to apply their estimates to selection strategies in a swine population. Reproductive and productive traits considered in this study were number of born alive piglet (NBA), number of weaned piglet (NW), loin eye area (LEA), days to 90 kg (D90KG), back fat thickness (BF), and lean meat content (LEAN). Data were collected from 9,886 litters on 2,447 sows for reproductive traits and 10,181 gilts and boars for productive traits from Jan. 2000 to Dec. 2008 in a swine GGP farm. The statistical model to estimate genetic parameters for considering traits was a multiple traits animal model with including animal and maternal additive effects and litter effects on reproductive traits and animal additive effects on productive traits as random as well as some of fixed effects. For estimating (co) variance components of several random effects, restricted maximum likelihood methodology was used on this assumed model. The estimated heritabilities by animal additive effects and maternal effects were 0.07 and 0.02 for NBA and 0.03 and 0.02 for NW, respectively. Genetic correlation estimate for direct genetic effects between NBA and NW was 0.14. Heritability estimates for direct genetic effects were 0.19, 0.39, 0.36, and 0.43 for LEA, D90KG, BF and LEAN, respectively. The genetic correlation of LEA with LEAN was 0.35. Productive traits were antagonistically correlated with reproductive traits. From these results it is concluded that, if selection is done for strong positive effects of reproductive traits, then this would decline productive performance.

• Korean Journal of Plant Resources
• /
• v.33 no.5
• /
• pp.536-549
• /
• 2020

Soybean (Glycine max (L.) Merrill) is one of the most important crops of the world. With the completion of the soybean genome sequence, the Korean soybean core collection consisted of 430 accessions with genetic and phenotypic diversity was constructed in recent year. The availability of genome sequences and core collection will result in the crop improvement by molecular breeding using the various accessions and genome editing approaches. Efficient tissue culture techniques, such as haploid production, protoplast culture and plant regeneration from various organs are essential for the successful molecular biological approach and crop improvement. However, soybean is still considered to be recalcitrant in tissue culture because of the low frequency of regeneration and limitation of available responsive cultivars. In this study, we discuss the recent studies of tissue culture technology and methodology for efficient tissue culture to genetic improvement and application of molecular biotechnology in soybean.

• Journal of the Korean Applied Science and Technology
• /
• v.35 no.1
• /
• pp.223-234
• /
• 2018

The purpose of this study was to analyze the parent-related factors affecting obesity and overweight in school-aged children. The subjects of this study were 408 students of 4th~6th grade and their parents and examined the degree of obesity, obesity-related characteristics, eating habits and exercise habits of children and their parents. The data were analyzed using $x^2-test$, t-test, ANOVA and multiple logistic regression analysis. The results of this study were as follows: father's BMI OR=1.265(95% CI: 1.133-1.412, p<.001), mother's BMI OR=1.214(95% CI: 1.077-1.368, CI: 1.113-1.725, p= .001), the child's eating habit OR=0.953(95% CI: .909- .998, p= .042), the TV watching time OR=1.385(95% CI: 1.113-1.725, p= .004), the economic state OR=0.132(95% CI: .026- .676, p= .015) were factors related affecting obesity and overweight in school-aged children. Children's obesity was influenced by parent's genetic factors, eating habits and living environment factors. Therefore, it is important to motivate the children as well as the their parents and induce the active participation of the program in order to manage the child's obesity.

• Journal of Food Hygiene and Safety
• /
• v.20 no.1
• /
• pp.22-35
• /
• 2005

A survey was conducted to investigate the perception of food sanitation officers toward the Genetically Modified Foods. They were mainly from Regional Agencies of KFDA, City/Province office, and National quarantine station. Some of them were professors of university and researchers of research institute. Most of respondents had experiences of hearing or reading GM foods (over $95\%$) and over $90\%$ of respondents much needed the label of GM foods. Although some of officers of city/province office and national quarantine station showed less knowledge than other respondent groups, most of respondents had basic knowledge about biology. The frequency of respondents worked over 20 years and worked in the general administration was higher than that of other groups in the question of unsafe of GM foods. The answer frequency of careless treatment of foods was highest in the question of risk factor, and the frequency of GM foods was lowest ($4.4\%$). It was concluded that food sanitation officers had positive opinion about GM foods, but there were some differences in the knowledge among agencies. Therefore, it is necessary more educations and informations are needed for food sanitation officers.

• Korean journal of applied entomology
• /
• v.55 no.4
• /
• pp.523-528
• /
• 2016

The migratory locust Locusta migratoria, one of the world's most notorious insect pests, has polyphenic (gregarious or solitarious) characteristics. Although this species is known to have several morphological variants, it is genetically divided into two different lineages using mitochondrial genome analysis: Southern (Africa, Southern Europe, Southern Asia, and Australia) and Northern (East Asia and the Eurasian continent). In 2014, a large number of orange black-colored gregarious L. migratoria nymphs suddenly appeared at Haenamgun, Jeollanamdo in the south of Korea. This is the first report of gregarious phase locusts occurring in Korea. In this study, mitochondrial COI sequences of one nymph and 11 adults of L. migratoria were analyzed to examine the genetic lineage of the gregarious nymphs of L. migratoria. Our results showed that all 12 individuals belong to the Northern linage and have low intraspecific genetic divergences (0.0% - 0.9%).

• Journal of Gifted/Talented Education
• /
• v.17 no.2
• /
• pp.280-306
• /
• 2007

The purpose of this study is to investigate the two assertions of hereditarianism and environmentalism in the intellectual abilities, which is one of the most important factors of giftedness, and thus to discuss and understand giftedness. As the result of various investigations about the two opposing opinions, it is general view that about 50% of the intellectual abilities are endowed by genetic factors, but they are not fixed life long but changed and developed by posterior experiences. In other word, it is said that giftedness itself of which an important factor is intellectual abilities is determined by heredity, but the degree of revelation of the potential faculty is determined by environmental factors. Therefore, the recent major concerns in this field seem to be on how to make unfold most the children's giftedness rather than arguments about the degree of genetic and environmental factors. It can be said that giftedness is sprung up and accelerated only when an excellent genetic factor and a special environmental factor are transacted dynamically and amplified exquisitely.

• The Journal of the Korea Contents Association
• /
• v.11 no.5
• /
• pp.308-316
• /
• 2011

Familial concordance of vascular risk factors is well understood and there are many studies about inter-spouse concordance of the risk factors for coronary heart disease. However, there are no studies for inter-spousal relation of the risk factors in cerebrovascular disease patients. We analysed inter-spouse correlation of cerebrovascular risk factors in patients admitted our hospital due to stroke and their spouses. There was statistically significant inter-spouse concordance in the presence of hypertension(p=0.025) and carotid IMT(r=0.479, p=0.001). However, the further age-adjusted analysis revealed no significant result. Differently from the results of previous studie,, the present study shows no significant spousal concordance. Althought there are tendencies of spousal concordance in some risk factors, the age is major determinant.

• The Korean Nurse
• /
• v.19 no.1 s.104
• /
• pp.68-84
• /
• 1980

간호사업은 1970년대 후반부터 이제까지의 병원중심-환자중심의 간호사업을 수행해 오다가 지역사회에 기반을 둔 간호사업인 건강간호사업으로 전환되기 시작하였다. 세계보건기구에서도 지역사회에 기반을 둔 간호사업인 일차건강관리사업을 중점적으로 지원하기 시작한 것이다. 이러한 역사적 전환의 배경과 실태에 관하여 문헌고찰을 하여 앞으로 국민건강사업 체계에 대한 논의에 참고자료가 되게 하고자 본 논문을 시도하였다. 본 논문에서 얻어진 결과를 다음과 같이 요약한다. 고도의 과학문명의 발달과 물질적 풍요로 특징짓는 현대사회속에서도 인류의 건강문제는 영원히 충족되지 못한 상태로 대두되고 있는 실정이다. 전통적으로 60년대 중반까지는 의료지식 및 기계공업의 발달과 이를 뒷받침할 재정적 지원속에 세계적으로 치료의학분야에 획기적인 발전을 가져왔다. 다른 한편으로는 건강을 태생의 권리라고 규정하여 여러나라에서 사회보장제대로써 의료시해의 균점을 위한 각가지 방도를 마련하기에 이르렀다. 그리하여 60년대말기부터 70년대로 넘어오면서 치료의학의 발달만으로는 의료수가가 앙등되어 모든 국민이 이용할 수 없을 뿐만 아니라 나아가서는 모든 국민의 건강문제를 해결하기는 어렵다는 사실을 발견하기 시작하였다. 또한 지역사회의 건강문제를 요인별로 따져보면 복잡하여 사회경제적, 문화적, 환경적, 유전적 제요인과도 밀접한 관계를 맺고 있기 때문에 신체적인 질병의 치료만이 지역사회 건강문제를 해결하는 길이 아님을 알게 되었다 그리고 지역사회의 건강문제를 해결하기 위해서는 일차보건의료사업에 중점을 두어 노력하는 것이 가장 합리적인 개선방안이라는 의견이 경험적으로 이론적으로 뒷받침되기 시작하였다. 이러한 사조는 지역사회 건강문제가 복잡한 것과 같이 그 접근방법에 있어서도 여러보건요원이 팀이 되어 임해야만 하며 그중에서도 간호팀의 활동이 중추적인 역할을 담당해야 한다고 여러 전문가들은 주장하고 있다. 따라서 앞으로의 간호사업의 방향은 지역 사회에 기반을 둔 간호사업이 실시되어야만 국민건강문제 해결에 기여하게 될 것으로 고찰되었다.

• Korean Journal of Agricultural and Forest Meteorology
• /
• v.16 no.4
• /
• pp.368-383
• /
• 2014

Climate change is expected to affect population density, phenology, distribution, morphological traits, reproduction and genetics of insects, and even in the extinction of insects. To develop novel research subjects for predicting climate change effect, basic information about biological and ecological data on insect species should be compiled and reviewed. For this reason, this study was conducted to collect the biological information on insect pests that are essential for predicting potential damage caused by insect pests in future environment. In addition, we compared domestic and foreign research trends regarding climate change effect and suggested future research subjects. Domestic researchers were rather narrow in the subject, and were mostly conducted based on short-term monitoring data to determine relationship between insects and environmental variables. On the other hand, foreign researches studied on various subjects to analyze the effect of climate change, such as changes in distribution of insect using long-term monitoring data or their prediction using population parameters and models, and monitoring of the change of the insect community structure. To determine change of the phenology, distribution, overwintering characteristics, and genetic structures of insects under climate change through development of monitoring technique, in conclusion, further researches are needed. Also, development of population models for major or potential pests is important for prediction of climate change effects.

• The Korean Journal of Applied Statistics
• /
• v.29 no.7
• /
• pp.1247-1255
• /
• 2016

Kim and Lee (2015) identified a superior FABP4 gene that improves the grade and fatty acid of Korean cattle. This study selects a superior genotype by expanding genes that influence the economic traits of Korean cattle. Expanded genes are FABP4, SCD, FASN and SREBPs that are related to grade and fatty acid (Oh, 2014). We use the adjusted economic-trait values with environmental factors excluded. We also applied multifactor dimensionality reduction(MDR) method to data of the adjusted economic-trait values. As a result, we identified superior genes and genotypes which improved the grade and fatty acid of Korean cattle.