본 연구는 코칭연구의 다변화 및 경영학연구에서 코칭접근의 활성화를 도모 하기 위해 그동안의 연구 동향을 분석하고자 하였다. ‘경영학적’으로 접근한 전체 발간 논문의 수와 발간학회를 중심으로 빈도분석 한 결과, 2010년에 1편으로 시작하여 2023년에는 9편으로 점증하였다. ’코칭관련 학회에서 발간된 ‘경영학적 접근’의 연구 동향을 알기 위해 4개 학 회에서 발간된 전체 논문 493편을 대상으로 한국경영학회 편집위원회에서 구분 한 ①경영전략 ②경영정보 ③국제경영 ④마케팅 ⑤생산계량 ⑥인사조직 ⑦재무 관리 ⑧회계 ⑨융합에 준해 빈도분석하였다. 그 결과, 2006년부터∼2024년까지 발간된 논문 중, 동향은 인사조직, 융합, 경영전략, 경영정보의 순으로 나타났다. ‘경영학적 접근’에 따른 ‘주제어(keyword)’의 구성 동향을 알기 위해 개별 논 문의 초록에 제시된 ‘주제어’를 중심으로 빈도분석한 결과, 조직몰입, 코칭리더 십, 코칭, 직무만족, 직무스트레스, 혁신행동의 순위로 나타났다. 그리고 임파워 먼트, 자기효능감, 코칭역량,조직성과은 동일한 순위로 나타났다. 향후, 본 연구 결과를 바탕으로 학회의 설립 목적과 특성을 고려한 경영학적 연구를 강화할 필요성이 크며, 특히 ‘융합’적 연구가 확충되어야 한다.

With the birth of ChatGPT, it has had a strong impact on the education industry, and the education association research is also diverse. This study aims to provide reference and new ideas for academic research in the educational field by analyzing the current research status, research hotspots, and research trends of ChatGPT in the field of education, and to provide some suggestions and new initiatives for education regulatory authorities. This study mainly used literature analysis and bibliometric methods to conduct quantitative and statistical analysis on the selected 452 advanced literature. At the same time, with the help of research tools such as CiteSpace 2022, WORDART2024, and XLSX2024, the data of the literature was input to generate visual charts. Through the interpretation of the charts, conclusions were drawn. This study analyzes the main characteristics of the current research situation through the distribution of literature time, disciplinary specialties, research level, and academic journals. Secondly, the distribution of research hotspots is revealed through keyword frequency statistics and keyword co-occurrence analysis. By analyzing the author's research trends and publishing institutions, it aims to explore the development trends in this field. Finally, this study found that the number of publications on the association between ChatGPT and education showed a steady upward trend, with the main disciplines focused on educational theory and computer application technology, and the publication journals concentrated on university sponsored academic journals and Chinese core journals. The research hotspots revolve around artificial intelligence, with strong intersection between hotspots. The research authors have strong independence and weak correlation. But there is strong integration and correlation between research institutions.

This study utilizes association rule learning and clustering analysis to explore the co-occurrence and relationships within ecosystems, focusing on the endangered brackish-water snail Clithon retropictum, classified as Class II endangered wildlife in Korea. The goal is to analyze co-occurrence patterns between brackish-water snails and other species to better understand their roles within the ecosystem. By examining co-occurrence patterns and relationships among species in large datasets, association rule learning aids in identifying significant relationships. Meanwhile, K-means and hierarchical clustering analyses are employed to assess ecological similarities and differences among species, facilitating their classification based on ecological characteristics. The findings reveal a significant level of relationship and co-occurrence between brackish-water snails and other species. This research underscores the importance of understanding these relationships for the conservation of endangered species like C. retropictum and for developing effective ecosystem management strategies. By emphasizing the role of a data-driven approach, this study contributes to advancing our knowledge on biodiversity conservation and ecosystem health, proposing new directions for future research in ecosystem management and conservation strategies.

본 연구는 Yorkshire종, Landrace종 및 Duroc종에 대한 유전체자료를 이용하여 수퇘지의 웅취를 유발하는 세 가지 호르몬인 androstenone, indole 및 skatole 호르몬에 대한 유의적인 유전자영역, SNP 마커 및 후보유전자를 발굴하여 최종적으로 저웅취 종돈을 육종하는데 그 목적이 있다. Genomoe-Wide Association Study를 수행하기 위한 참조집단으로 수집한 유전체 정보는 Yorkshire, Landrace 및 Duroc종에서 각각 3,858 두, 472두 및 1,029두로 총 5,359두에 대한 유전체자료를 분석에 이용하였다. 추정되는 육종가의 정확도를 평가하기 위하여 REML방법을 ASREML 4.1 소프트웨어를 이용하여 분석하였고 세 가지 호르몬에 대하여 다형질 개체모형을 적용하였으며 추정된 육종가로부터 산출한 deregreessed DEBVincPA를 반응변수로 이용하여 연구를 수행하였다. 세 가지 호르몬에 대하여 BayesB와 C의 방법론을 통하여 분석한 결과 BayesB에서 세 가지 호르몬과 연관될 것으로 예상되는 SNP marker 9개, 즉 androstenone에서 3개, indole에서 1개 및 skatole에서 5개가 발굴되었다. BayesC에 서는 이보다 적은 SNP marker 3개가 발굴되었다. 수퇘지의 웅취 호르몬에 영향을 미칠 것으로 예상되는 후보유전자는 총 6개로 각각 LMAN2L, ABLI, NRG3, CDH12, TRAPPC9, MAN1A2로 나타났다

The association between the COMT rs4680 (G>A, Val-158-Met) polymorphism and the risk of fibromyalgia has been investigated in previous studies, but the results are controversial. Therefore, a meta-analysis has been performed to confirm the association between COMT rs4680 (G>A, Val-158-Met) polymorphism and the risk of fibromyalgia in this study. Our study includes eleven case-control studies with 2,909 individuals comprised of 1,365 fibromyalgia patients and 1,544 control subjects. The regression analysis was performed using the random effects model or the fixed effects model and OR with the corresponding 95 % CI was calculated for the allele, recessive, dominant, over-dominant, co-dominant 1, and co-dominant 2 model. No statistical significant associations were observed between COMT rs4680 (G>A, Val-158-Met) polymorphism and risk of fibromyalgia in allele model (P-value = 1.00), recessive model (P-value = 1.00), dominant model (P-value = 0.54), co-dominant 1 model (P-value = 1.00) and co-dominant 2 model (P-value = 1.00). In conclusion, our meta-analysis showed that the COMT rs4680(G>A, Val-158-Met) polymorphism might not be genetic risk factor for the fibromyalgia.

Since 1990s, despite the strong opposition of the international community, North Korea has frequently conducted nuclear weapons tests and missile tests, and the DPRK nuclear issue has become an important factor affecting the security and stability of the Asia-Pacific region. As an extremely important multilateral organization in the Asia-Pacific region, ASEAN has gradually increased its influence in the Asia-Pacific region with the advancement of integration in recent years. In order to further enhance its influence and enhance its participation in Asia-Pacific affairs, ASEAN has been trying to give its voice on the Korean nuclear issue. The ASEAN Regional Forum and ASEAN Summit are the most important platforms for ASEAN to express its position and views. Since the North Korean nuclear issue became prominent, the North Korean nuclear issue has been a key topic discussed in the ASEAN Regional Forum and ASEAN Summit. Judging from the conference documents produced by the conferences over the years, ASEAN's attitude towards the Korean nuclear issue is still being fine-tuned. Although the international community has repeatedly issued policies to condemn North Korea and impose economic sanctions, ASEAN is generally neutral and conservative in its attitude towards the DPRK nuclear issue, and it is also very cautious in its actions. Recently, with China and Russia following the United States, they began to impose severe economic sanctions on North Korea, and their words changed to severe condemnation, and ASEAN's attitude towards North Korea also changed subtly. To some extent, the changes of the Korean nuclear issue in ASEAN reflect the constant fine-tuning of ASEAN's foreign policy. This paper aims to find out the fine-tuning of ASEAN's foreign policy and its influence on ASEAN by combing the changes of ASEAN's Korean nuclear issue and the potential reasons behind the changes.

This study compared the lifestyle patterns, dietary patterns, and health care practices of Korean middle-aged people by household type, and ultimately analyzed their relationship with different risk factors for the prevalence and severity of metabolic syndrome. We analyzed the data from 4,755 subjects who were from 40 to 64 years old, and gathered our sample from participants of the Korea National Health and Nutrition Examination Survey from 2013 to 2015. Our results showed that single-person households had lower economic income levels, lower subjective health statuses, and higher levels of food instability than households with two or more individuals. The incidence of metabolic syndrome was 1.64 times higher in single-person households than in households with two or more individuals. After adjusting for potential confounding factors (sex, age, education, household income, smoking status, health status, and dietary factors), single-person households showed 1.75 times higher hypertriglyceridemia ORs than non-single-person households. In the conclusion of our study, we suggest that middle-aged people in single-person households may be at greater risk for metabolic syndrome and hypertriglyceridemia.

This systematic review and meta-analysis aimed to determine whether food intake is effective in preventing diseases related to cognitive impairment. We searched English databases namely MEDLINE, PubMed and ScienceDirect from 2000 to May 2020, and Korean databases namely RISS, KISS, and DBPIA from 1990 to May 2020. We divided the data into 15 groups using the food group classification of the Korean Nutrition Society (KNS). The effect size (Cohen’s d) was estimated using a random-effect model, and a 95% confidence interval was calculated for each study. We included 17 cross-sectional studies and 7 cohort studies which involved 45,115 participants. As a result of analyzing the subgroups in the Asian population of both sexes, it was observed that grain intake has a protective effect against cognitive impairment. For females, pulses and fish also have a protective role against cognitive impairment. In the case of seaweed, a negative relationship was found with a moderate protective effect against cognitive impairment (Cohen’s d:-0.533, 95% CI: -0.939, -0.126; p=0.010) in Korean studies. Dairy products are associated with an increased risk of cognitive impairment in the American and European population but drinking alcohol is associated with a lower impairment risk. These results provide a basis for formulating the dietary guidelines for preventing dementia for each country.

이 논문의 목적은 빅데이터 분석기법의 하나인 연관규칙 분석법을 이용하여 소비자가 구매하는 신선식품 간의 상호 연관성을 살펴보는 것이다. 농촌진흥청의 「농식품 소비자 패널조사」에서 가공식품을 제외한 신선식품의 구매내역 정보를 이용하여 전통시장, 대형마트, 기업형 슈퍼마켓에서 나타나는 연관규칙을 계절별로 분석하였다. 소비자를 2011년을 기준년도로 하여 30, 40, 50대로 구분한 후에, 연령대･구입장소별로 도출된 연관규칙 을 매년 등장한 규칙, 빈번하게 나타난 규칙, 새로 생성된 규칙 세 가지로 구분하였다. 또한 각 연도별로 나타난 공통된 연관규칙에서 향상도의 변화를 분석하여 장바구니에서 나타나는 연관 구매의 동태적인 변화 패턴을 살펴보았다. 분석결과는 소매점포가 묶음상품을 개발하거나 매대를 구성할 때 또는 소비자에게 발송할 상품 홍보용 전단지를 만들 때 유용하게 사용될 것이다.

암은 오랫동안 한국인의 주된 사망원인이었으며, 주로 환경적 요인이 암 발생에 영향을 주고 있다. 암으로 인한 높은 사망률에도 불구하고, 어떠한 지리적 및 환경적 요인이 암 발생에 영향을 주는지에 대한 국내 사례 연구는 부족한 실정이다. 본 연구의 목적은 공간적 관점에서 갑상선암, 대장암, 위암, 폐암, 간암, 전립선암, 유방암을 포함한 주요 암의 발생률이 지리･환경적 요인에 따라 어떻게 다르게 나타나는지를 파악하는 것이다. 이를 위하여, 시군구 수준에서 계산된 암 발생률을 종속변수로 활용하였고, 암 발병에 영향을 미칠 것으로 기대되는 13가지 독립변수를 선정하였다. 종속변수의 공간적 의존성 및 군집을 확인하기 위하여 전역적, 국지적 Moran ’ s I 통계량을 이용하였고, 암 발병에 영향을 미치는 요인을 파악하기 위하여 OLS 및 공간회귀모형들을 활용하였다. 전역적 Moran 통계량과 LISA Cluster map을 통하여 암 발생의 공간적 패턴에서 공간적 자기상관을 확인할 수 있었다. 다음 OLS 회귀 분석을 통하여 암 발생에 영향을 미치는 변수들을 파악하였다. 이때 대부분의 암에서 연령 효과가 강하게 나타났기 때문에 이를 통제하였다. OLS 모형의 잔차에서 공간적 의존성이 명확하게 나타남을 확인한 후, 공간적 의존성을 모형화하기 위하여 공간회귀분석을 수행하였다. 분석 결과 모든 유형 별 암에 대한 발생률을 설명하는데 있어 공간회귀분석이 적합한 것으로 나타났다. 특히 공간적 의존성을 고려할 경우 암별로 영향을 주는 요인이 OLS 분석 결과와 상이할 수 있음을 확인하였다. 본 연구 결과는 공간통계분석을 통하여 암 발생에 영향을 주는 지리 환경적 요인을 보다 정확하게 식별할 수 있음을 보여주었다. 이러한 결과는 암을 예방하기 위하여 지역의 환경을 요인을 어떻게 개선할 것인지에 대한 유용한 정보를 제공한다.

According to Livestock Inspection Standards, the piglets enter the feedlot at approximately 30 kg, and the inspection starts after the preliminary feeding period. The reason for applying the preliminary feeding period is to select inspection piglets with no diseases after the complete growth of the internal organs until 10 weeks of age. Furthermore, the age of 10 week is the time when the muscle fibers grow to their maximum size and the piglets are prepared for fat deposition at the later fattening period. In the study, a genome-wide association study (GWAS) was performed through the mlma command of the genome-wide complex trait analysis (GCTA) program with 703 purebred Landrace population, and the candidate genes associated with the weight of 10 week were searched. The GWAS identified 3 single nucleotide polymorphism (SNP) markers, which have a significant genome-wide suggestive level, on chromosome 6 (DIAS0002615; p-value=1.62×10-6, MARC0083933; p-value=4.94×10-6, ASGA0028717; p-value=5.40×10-6). The 2 genes (Ubiquitin protein ligase E3 component n-recognin 4; UBR4, WD and tetratricopeptide repeats 1; WDTC1) in which these 3 SNP markers are located are positional candidate genes of the weight of 10 week of the purebred Landrace population. 2 candidate genes have been reported to be associated with fattening. Therefore, the positional candidate genes in this study, UBR4 and WDTC1, are expected to be usable as genes for traits associated with the weight of 10 week weight and fattening through additional experimental research with other population.

This study was conducted aiming to figure out two things. First, knowledge of the change in spatial distribution of Tetranychus urticae depending on how to control it (using pesticide or natural enemy). Second, spatial association of T. urticae and Phytoseiulus persimilis in biocontrol plot (B.P). The data was analyzed by spatial analysis by distance indices (SADIE) using global aggregation index, Ia . Ia values were 0.77-1.37 in conventional plot (C.P) and 0.88-1.68 in B.P, respectively. However, the fluctuation level of Ia in B.P was higher than C.P. Therefore, the results indicated that there was a clear spatial pattern change in B.P, i.e. prey’s spatial distribution is affected by natural enemy. And spatial association analysis showed that T. urticae and P. persimilis have positively associated. It means that T. urticae is relatively low mobile prey, and P. persimilis is relatively high mobile predator.

Cryopreservation of boar semen is continually researched in reproductive technologies and genetic resource banking in breed conservation. For evaluating the boar semen quality, sperm motility (MOT) is an important parameter because the movement of spermatozoa indicates active metabolism, membrane integrity and fertilizing capacity. Recently, polymorphisms reported to be significant association with sperm MOT. This study was conducted to evaluate the SNP in the coding region of ESR1 (g.672C>T inexon 1) as a positional controlling for motility and kinematic characteristics of post-thawed boar semen. To results,The g.672C>T was significantly associated with frozen semen motility and kinematic characteristics. g.158 T>C SNP was high significantly associated with MOT, VCL, VSL and VAP Also, the SNP was low significantly associated with ALH.Therefore, we suggest that theSNP in the coding region of ESR1 (g.672C>T in exon 1) may be used as a molecular marker for Duroc boar Post-thawed semen quality.

본 연구는 한우의 전장유전체 내에 존재하는 단일염기 다형성(SNP)에 대해 DNA chip 분석을 통해 각 개체의 유 전자형을 파악하고, SNP 표지인자간 연관불평형의 크기를 알아보기 위해 실시하였다. 강원도에서 사육되고 있던 한 우 거세우 139두의 조직을 채취하여 DNA를 추출하였으 며, Bovine SNP50K BeadChip 분석을 이용하여 분석에 사 용 가능한 최종 35,769개의 SNP 표지인자를 얻어 연관성 분석을 실시하였다. 분석에 이용된 SNP 표지인자의 총 길 이는 2499.26Mb이었고, 전장 유전체에서 평균 대립유전자 빈도(MAF)는 0.273이었으며, SNP 표지인자간의 평균 거 리는 0.060과 0.082 사이에 분포하였다. 강원지역 내 한우 거세우를 이용하여 확인한 본 실험 결과는 기존의 전국의 한우를 대상으로 한 연구결과와 유사한 패턴을 보였다. 50Kb 이하로 인접한 거리를 갖는 SNP 표지인자들의 연관 불평형 값(r2)이 0.2 초과인 인자가 34%로 나타났다. 또한 SNP 표지인자간 거리가 멀수록 측정값이 떨어지는 지수형 식의 그래프를 보였다. 염색체별로 구분한 40kb 이하로 인 접한 SNP표지인자의 연관불평형 값(r2)은 0.2 이하로 나타 난 것이 총 7개(13, 15, 19, 23, 25, 28, 29번 염색체)였다. 종 합하여 볼 때, 본 연구 결과는 강원한우의 유전적 개량을 이 용한 기초자료로서 활용될 수 있을 것이며, 유전적 개량을 이용한 육종시스템에 도움을 줄 수 있을 것으로 기대된다.

Previously, we reported a quantitative trait locus (QTL) that affect total teat number (TTN) on pig chromosome 7 (SSC7) in a large F2 intercross population between Landrace and Korean native pigs. The aim of this study was to refine the QTL associated with TTN and to identify positional candidate gene(s) within the refined genomic region. TTN was recorded in 1,105 F2 progeny. All experimental animals were genotyped using 998 informative single nucleotide polymorphism (SNP) markers located on SSC7. A haplotype-based linkage and association analysis using the PHASEBOOK programme was applied to perform high-resolution QTL analysis. Additionally, linear mixed-effect models were used to assess the effect of a positional candidate gene on TTN and other economically important traits [i.e., thoracic vertebrae number (THO), carcass body length (CBL) and weight (CW), back fat thickness (BFT) and intramuscular fat content (IMF) in loin muscles]. Joint linkage and association analysis refined the critical region to a 1.07 Mb region that included a novel positional candidate gene, BRMS1L, that encodes the breast cancer metastasis-suppressor 1-like protein, which could possibly be implicated in normal mammary gland development. Significant association of an SNP marker (g.-1087 G>A) in the 5’-flanking region of BRMS1L with TTN (P=1.10x10-8), THO (P=5.80x10-4), and CBL (P=0.038) was observed. Based on these data, we propose BRMS1L as a positional candidate gene for TTN in pigs. After validation of the association in other independent populations and further functional studies, these results could be useful in optimizing breeding programmes that improve TTN and other economically important traits in swine

Thus far, there have been many studies focusing on meat quality improvement for Hanwoo (Korean cattle). It is considered that studies on meat quality have been actively conducted because beef consumption has changed from quantity to quality since early 1990's. Moreover, many studies on meat quality using maker assisted selection (MAS) have been conducted. However, there is a need to study quantity of meat in order to enhance the economic effect by genetic diversity and quantity of meat for Hanwoo. Therefore, in order to use a myostatin gene affecting meat quantity among quantitative genes for MAS, this study analyzed the association between genetic variation of myostatin gene in individuals of Hanwoo and carcass traits. Analysis between genotypes and individual phenotypic characteristics was performed by ANOVA using ASREML. Association analysis between these 10 SNPs and phenotypic characteristics (carcass weight, eye muscle area, backfat thickness, marbling score, yield index), and there were significant differences in 5 SNPs. As a result, there were five significant differences. Although all the SNPs did not show significant differences in each trait in this study, some SNPs showed significant differences in each trait. The diversity of myostatin gene was found in Hanwoo.

본 연구는 동시출현단어(co-word) 분석을 이용하여 기술경영 분야의 연구 주제 네트워크를 구축하고, 핵심 연구 주제 및 연구 주제 간 상호연관관계를 도출한다. 동시출현 빈도수의 정규화를 통해 키워드 간 유사성을 도출하여 무방향 네트워크를 분석하는 기존연구들과는 달리 본 연구는 연관규칙분석(association rule)을 통해 키워드 간 신뢰도(confidence)를 도출하여 유방향 네트워크 분석을 수행한다. 2011～2014년 기술경영 분야 9 개 국제 학술지에 게재된 2,456개의 논문의 저자키워드를 대상으로 빈도수 상위 200개 키워드를 추출하고, 주제(THEME), 방법(METHOD), 분야(FIELD)의 세 가지 유형으로 키워드를 분류한다. 각 유형별 일원(one-mode) 네트워크를 구축하여, 함께 많이 연구가 이루어진키워드들을 찾아내고, 핵심 키워드를 도출한다. 또한 두 가지 유형의 키워드 간의 이원(two-mode) 네트워크를 구축하여, 연구 주제별로 함께 많이 활용된 방법 및 대상 분야를 탐색한다. 본 연구 결과는 최근 성숙기에 접어든 기술경영 분야의 연구 흐름 및 지식 구조를 키워드 수준에서 구체적으로 제시함으로써, 기술경영 분야 연구자들의 연구 주제 탐색 및 연구방향 설계에 활용될 수 있을 것으로 기대된다.

For evaluating the boar semen quality, sperm motility (MOT) is an important parameter because the movement of spermatozoa indicates active metabolism, membrane integrity and fertilizing capacity. Phospholipase C zeta (PLCz) is important enzyme in spermatogenesis, but their effect has not been confirmed in pigs yet. Therefore, this study was aimed to analyze their association with sperm motility and kinematic characteristics. DNA samples from 124 Duroc pigs with records of sperm motility and kinematic characteristics [Total motile spermatozoa (MOT), Curvilinear velocity (VCL), Straight-line velocity (VSL), the ratio between VSL and VCL (LIN), Amplitude of Lateral Head displacement (ALH)] were subjected. A SNP in non-coding region of PLCz g.158 A > C was associated with MOT (p < 0.05), VCL (p < 0.01), LIN (p < 0.01) and ALH (p < 0.05) in Duroc population. Therefore, we suggest that the intron region of the porcine PLCz gene may be used as a molecular marker for Duroc boar semen quality, although its functional effect was not defined yet. Whether the association is due to the candidate gene or not require further verification. Thus, it will be of interest to continue association studies in the regions surrounding those genes.

Cluster-of-differentiation antigen 9 (CD9) gene expressed in the male germ line stem cells is crucial for sperm–egg fusion, and was therefore selected as candidate gene for boar semen motility and kinematic characteristics. This study was performed to investigatetheir association with semen motility and kinematic characteristics. DNA samples from 96 Duroc pigs with records of sperm motility and kinematic characteristics [Total motile spermatozoa (MOT), Curvilinear velocity(VCL), Straight-line velocity(VSL), the ratio between VSL and VCL(LIN), Amplitude of Lateral Head displacement(ALH)] were used in present study. A single nucleotide polymorphism (g.358A>T) in intron 6 was associated with MOT, VCL, VAP and ALH in Duroc population (p < 0.05). Therefore, we suggest that the porcine CD9 may be used as a molecular marker for Duroc boar semen quality, although its functional effect was not clear yet. These results will improve the understanding of the functions of the CD9 in spermatogenesis within the reproductive tracts, and will shed light on CD9 as a candidate gene in the selection of good sperm quality boars.

For evaluating the boar semen quality, sperm motility is an important parameter because the movement of sperm indicates active metabolism, membrane integrity and fertilizing capacity. Phospholipase C zeta (PLCz) is important enzyme in spermatogenesis, but the effect has not been confirmed in pigs yet. Therefore, this study was aimed to analyze their association with sperm motility and kinematic characteristics. DNA samples from 124 Duroc pigs with records of sperm motility and kinematic characteristics [total motile spermatozoa (MOT), curvilinear velocity (VCL), straight-line velocity (VSL), the ratio between VSL and VCL (LIN), amplitude of lateral head displacement (ALH)] were subjected. A SNP in non-coding region of PLCz g.158 A > C was associated with MOT (p < 0.05), VCL (p < 0.01), LIN (p < 0.01) and ALH (p < 0.05) in Duroc population. Therefore, we suggest that the intron region of the porcine PLCz gene may be used as a molecular marker for Duroc boar semen quality, although its functional effect was not defined yet. Whether the association is due to the candidate gene or not require further verification. Thus, it will be of interest to continue association studies in the regions surrounding those genes.