• 한국가금학회지
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• 제43권3호
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• pp.169-176
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• 2016

An experiment was conducted to evaluate the growth performance and meat quality traits of broilers fed a diet supplemented with dry-ground curry leaves (Murraya koenigii). A total of 750 one-day-old broiler chicks (Cobbs 500) were arranged in the experiment with a completely randomized design and allotted to one of five treatments, with $T_1-Control$ and $T_2-T_5$ curry leaves powder levels (i.e., 0.3%, 0.6%, 0.9% and 1.2%, respectively). The initial body weights, final body weights and daily feed intake were measured over an experimental period of 32 days. At the conclusion of the experiment, the carcass weights and meat quality parameters were measured. The birds fed diets supplemented with curry leaves powder had a higher weight gain (P<0.05; ADG), improved feed conversion ratio (P<0.05; FCR) and lower mortality (P<0.05) rates compared to the birds in the control group. Nonetheless, there was no difference (P>0.05) in feed intake among the dietary treatments. Similarly, supplementation of curry leaves powder had no effect (P>0.05) on the proportions of the carcass, leg meat and drumstick. No differences were (P>0.05) observed in cooking loss or the pH of meat from broilers fed the curry leaves supplemented diet. However, curry leaf supplementation affected (P<0.05) the meat water holding capacity. A sensory evaluation showed higher levels of taste and tenderness in meat from broilers fed with curry leaves powder. In conclusion, our results suggested that curry leaves powder improved the growth performance of broilers, with a lower incidence of mortality and improvement of some meat qualities.

• Journal of Animal Science and Technology
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• 제54권3호
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• pp.185-190
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• 2012

A total of 800 one-day-old chickens (Cobb 500) were obtained from a local hatchery and allocated randomly to five dietary treatments. This study conducted for 42 d. Treatment groups included 1) CON (control), 2) T0.3 (0.3% of thyme extract), 3) T0.6 (0.6% of thyme extract), 4) G0.3 (0.3% of garlic extract) and 5) G0.6 (0.6% of garlic extract). Thyme extract included $90{\mu}g/ml$ Carvacrol and 400 mg/ml thymol while garlic extract included 100 mg/ml elastin. There were no significant effects among the treatments on weight gain, feed intake and feed conversion ratio over the entire trial. Also, no significant differences were observed between CON group and other treatments in plasma parameters (cholesterol, triglyceride and HDL) and hematocrit. Sex of chickens had no effect on blood parameters. Supplementation of herb extracts did not affect carcass characteristics including carcass yield, breast, thigh and abdominal fat. There were no significant differences observed in carcass characteristics between males and females fed with different levels of herb extracts. In conclusion, supplementation of garlic and thyme extracts as feed additives at two levels of 3 and 6% in the present study did not improve performance and carcass traits of broiler chicks.

• Journal of Animal Science and Technology
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• 제62권2호
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• pp.187-197
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• 2020

The present study was conducted to evaluate the effects of black soldier fly larvae oil (BSFLO) from the black soldier fly larvae (BSFL) as a partial or total replacement of soybean oil (SBO) on growth performance, fatty acid (FA) profile, and meat quality of broiler chickens from 1 to 5 wk of age. A total of 210 male broiler chickens (Ross 308) at one-day of age were randomly allotted to 3 dietary treatments (10 replicates and 7 birds/group): a basal control diet (CON), the basal diet in which the SBO was replaced by 50% (50 BSFLO) or 100% (100 BSFLO) of BSFLO. The growth performance, physical measurements and chemical traits of leg meat, and sensory analysis of breast meat were not influenced by diets. However, the relative weight (g/kg) of gizzard of CON was significantly higher (14.85, 12.52, and 13.02 for CON, 50 BSFLO, and 100 BSFLO; p < 0.05) than that of other treatments. As expected, the FA profile of breast meat was affected by BSFLO inclusion. The proportion (%) of saturated fatty acid (SFA) was increased (27.16, 27.58, and 28.72 for CON, 50 BSFLO, and 100 BSFLO; p < 0.05) by BSFLO inclusion and the percentage (%) of MUFA was also increased (43.36, 44.58, and 48.55 for CON, 50 BSFLO, and 100 BSFLO; p < 0.01). On the contrary, the proportion (%) of PUFA was decreased (29.49, 27.84, and 22.74 for CON, 50 BSFLO, and 100 BSFLO; p < 0.01). In conclusion, the present study suggests that the replacement of BSFLO did not show an adverse effect on growth performance and it could be an ingredient as a dietary fat source for a broiler diet.

• 가정과삶의질연구
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• 제31권6호
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• pp.97-112
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• 2013

This study was conducted to investigate the effect of sandplay therapy for couples on the self-differentiation, and heterosexual relationship satisfaction, of couples who are college students'. The subjects were four couples who are college students living in Seoul with low self-differentiation and heterosexual relationship satisfaction. I carried out sandplay therapy on four couples for once a week for 10 weeks, and each session was 70 minutes long. In this study, the self-differentiation scale was modified for Korea on the basis of Bowen's family systems theory (1976), and it was used as a research tool. Yu (2000) and Lee (2000) made a scale to measure heterosexual relationship satisfaction after they adjusted the Korea Marital Satisfaction Inventory (K-MSI). The scale was also used in order to compare pre-therapy and post-therapy traits and identify any changes. In addition, the group's behavior and interactions were observed and recorded in each session throughout the process of sandplay therapy with the couples, and the behanior and interactions were analyzed along with the change flow in the sand trays. The study's outcomes are summed up as follows. First, sandplay therapy with couples advances the level of self-differentiation in college students. Second, sandplay therapy with couples improves the heterosexual relationship satisfaction on college students. Third, the trays used in sandplay therapy with couples showed positive changes as the therapy progressed. As the sessions continued, negative factors in the trays decreased and the trays converged into one. As the sessions proceeded, it was observed that the couples became closer, felt more comfortable with each other, compromised and reflected on their relationship. The study's results show that sandplay therapy with couples increased the level of self-differentiation in college students and heterosexual relationship satisfaction, thus proving the therapy's effectiveness.

• Journal of Microbiology
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• 제45권5호
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• pp.466-472
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• 2007

A total of 98 vancomycin-resistant Enterococcus faecium (VREF) isolates (58 isolates from patients and 40 isolates from poultry) were compared based on their antimicrobial susceptibility, Tn1546 element organization, and pulsed-field gel electrophoresis (PFGE) patterns. This comparison aided in determining the relationships between the groups of isolates. All the VREF isolates harbored the vanA gene; however, 29 (29.6%) of the isolates exhibited the VanB phenotype-vanA genotype. Furthermore, the VREF isolates from humans and poultry exhibited distinct antimicrobial resistance patterns. The PCR mapping of the Tn1546 elements exhibited 12 different transposon types (A to L). The VREF isolates of poultry were classified into types A to D, whereas the human isolates were classified into types E to L. A PFGE analysis demonstrated a high degree of clonal heterogeneity in both groups of isolates; however, the distinct VREF clones appeared in each group of isolates. The deletion of the vanX-vanY genes or insertion of IS1216V in the intergenic region from the vanX-vanY genes is directly associated with the incongruence of the VanB phenotype-vanA genotype in human VREF isolates. These data suggest that the VREF isolates exhibit distinct phenotypic and genotypic traits according to their origins, which suggests that no evidence exists to substantiate the clonal spread or transfer of vancomycin resistance determinants between humans and poultry.

• 가정과삶의질연구
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• 제33권5호
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• pp.55-70
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• 2015

The purpose of the study is to examine the effect of personality style and emotional dysregulation on female adolescents' eating attitude, and the mediating effect of emotional dysregulation on the relationship between personality style and eating attitude. For this research, questionnaires on personality style, emotional dysregulation and eating attitude were administered to 1370 female high school students based in Seoul. Among 1370 questionnaires collected, 1239 were selected and statistically analyzed by frequency analysis, Pearson's correlation analysis, multiple regression analysis, and stepwise multiple regression analysis using SPSS Win 21.0. The main findings of the study are as follows: First, according to female adolescents' BMI, the level of their eating attitude differed significantly. Second, according to female adolescents' BMI, female adolescents' personality style and emotional dysregulation were found to affect their eating attitude significantly. Third, emotional dysregulation had a mediating effect on the relationship between female adolescents' personality style and eating attitude. To be more specific, for the normal weight group of female adolescents, emotional dysregulation was found to have a partial mediating effect on the relationship between sociotropy and eating attitude, and a full mediating effect on the relationship between autonomy and eating attitude. On the contrary, for the overweight and obese groups of female adolescents, emotional dysregulation was found to have a full mediating effect on the relationship between sociotropy and eating attitude, and a partial mediating effect on the relationship between autonomy and eating attitude. The results of the study show the ways in which personality and emotional traits contribute to female adolescents' eating attitude according to their BMI, and provide useful information for treatment of adolescents' eating disorder in clinical settings.

• 디지털융복합연구
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• 제16권7호
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• pp.79-88
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• 2018

기업의 내부 고객인 사원들의 사기(Morale)에 대한 연구들은 많이 발표되어 있지만, 군대에서 전투력 향상과 밀접한 역할을 하고 있는 군사기에 관련된 연구들은 많이 부족한 상황이다. 따라서 본 논문은 SNS의 특성을 통해 커뮤니케이션 만족이 군의 사기에 어떻게 영향을 미치는 지에 관해 알아보고자 연구하였다. 실증적인 검증을 위하여 본 연구에서는 군인 240명을 대상으로 설문을 진행하여 수집된 결과를 분석하였다. 분석방법은 구조방정식(SEM)을 사용하여 각 변수들 간의 상관관계에 대하여 알아보고자 하였다. 본 논문의 연구 결과, SNS 특성이 조직 커뮤니케이션 만족에 관련된 전체모형에 대해 정(+)의 영향을 미치는 결과가 나타났다. 그리고 조직 커뮤니케이션 만족은 군의 사기에 대해 정(+)의 영향을 미치는 것으로 검증되었으며, 조직 커뮤니케이션 만족은 군사기와 SNS특성 간에 매개역할을 하는 것으로 증명되었다. 본 연구를 통해 적당한 수준에서의 SNS를 활용한 군내 조직원들의 커뮤니케이션의 활성화를 통해 장병들의 사기를 증진을 도모하고자 한다.

• 한국정보통신학회논문지
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• 제22권10호
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• pp.1340-1346
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• 2018

게임 고객의 충성도 혹은 재구매 의도를 경영학의 고객 충성도 이론을 적용해 보는 거시적 분석이 있었지만 게임 시스템이 복잡해지면서 흥행에 성공한 특정 게임의 장기 충성 사용자의 행동 패턴을 분석함으로써 실증적으로 그 게임에 대한 애착과 성공의 원인을 알아보는 것도 의미가 있다. 본 논문에서는 2012년 출시되어 초창기에 흥행에 큰 성공을 거두고 지금도 점유율 10위권에 자리하고 있는 판타지 퓨전 무협 MMORPG 블레이드 앤 소울의 3년 이상 장기충성 사용자들의 행동 패턴이 1년 미만의 캐주얼 집단, 플레이 경력 1~3년 사이의 집단과 어떻게 다른 지 222명의 피험자에 대해 설문을 통해 살펴보았다. 그 결과 그 게임의 강점으로 알려진 던전 활동, 비무, 전장의 전투 방식과 내용보다는 그 게임 커뮤니티에의 끈끈한 애착이 더 중요했다. 심지어 전투 밸런스의 만족도는 5점 척도에서 모든 그룹이 1점대를 기록하기도 하고 초심자와 장기사용자가 1~3년 사용자보다 전투 레벨이 높은 U-커브를 나타내기도 했다. 이에 다시 148명의 장기 사용자의 설문 분석을 통해 커뮤니티 내 인간관계 형성 요인과 패턴을 조사하였다.

• 미생물학회지
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• 제53권4호
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• pp.320-322
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• 2017

그람 음성이며 긴 막대 모양의 betaproteobacteria에 속하는 GR16-43을 한강 발원지 검룡소에서 분리하였다. GR16-43 균주에 대한 유전체분석을 실시하였으며, G + C 비율이 67.12%인 4,806,848 bp 크기의 염기서열을 얻었다. 유전체 특징은 황산화와 관련된 다량의 유전자를 보유하고 있어 균주의 잠재적 중요성을 보여준다. 이러한 결과는 GR16-43 균주가 빈영양 담수 환경에서의 적응 연구를 위한 유전체 정보를 제공한다.

• 융합정보논문지
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• 제9권11호
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• pp.247-253
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• 2019

본 연구는 피부미용사를 대상으로 한 직무 스트레스와 소진 및 공감만족을 조사한 연구이다. 자료 수집을 위해 서울지역과 경기도 지역의 268명 피부미용사를 대상으로 설문조사를 실시하였다. 설문지 구성은 KOSS의 24개 항목과 ProQOL의 소진과 공감만족 각 10개 항목으로 구성되어 있다. 이 결과 한국의 직업적 스트레스 척도와 비교했을 때 상위 75%에 포함되었으며, 일반적인 특성에 따라 피부미용사들의 직무스트레스 및 소진과 공감만족이 보통 수준 이상으로 나타났다. 피부미용사들의 소진이 결코 적지 않음을 알 수 있었다. 본 연구는 피부미용사들의 직무스트레스와 소진을 줄이는 방법을 찾는 데 있어 기초자료로 사용될 수 있을 것으로 기대된다.