• Animal Bioscience
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• 제34권4호
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• pp.621-632
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• 2021

Objective: This study was conducted to investigate the effects of supplementation with rumen-protected γ-aminobutyric acid (GABA) on carcass characteristics and meat quality of Hanwoo steers. Methods: Eighteen Hanwoo steers with an average initial weight of 644.83±12.91 kg were randomly allocated into three different groups. Each group consisted of 6 animals that were treated with different diets formulated based on the animals' body weights. The control (C) group was fed a basal diet consisting of concentrate and rice straw with 74% total digestible nutrients (TDNs) and 12% crude protein (CP). The two other groups were treatment groups; one group was fed a basal diet (74% TDNs and 12% CP) supplemented with rumen-protected GABA at a dose of 150 mg/kg feed, and the other group was fed a basal diet (74% TDNs and 12% CP) supplemented with GABA at a dose of 300 mg/kg feed. Results: The GABA supplementation significantly contributed to better growth performance (p<0.05), especially the weight gain and average daily gain. It also contributed to the lower cooking loss (p<0.05), improvements in essential antioxidant enzymes and stable regulation of antioxidant activities in the longissimus lumborum of Hanwoo steers, as represented by the lower formation of malondialdehyde content within the meat, the inhibition of myoglobin oxidation indicated by the retention of the oxymyoglobin percentage, and the suppression of metmyoglobin percentage during cold storage (p<0.05). Conclusion: Higher doses of GABA may not significantly promote better animal performance and meat quality, suggesting that dietary supplementation with GABA at a dose of 100 ppm is sufficient to improve the meat quality of Hanwoo steers.

• 한국농공학회논문집
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• 제64권1호
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• pp.27-37
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• 2022

This study established a water supply network based on the operation case of Mandae Reservoir in Yanggu-gun, Gangwon-do, to analyze the efficient distribution and management of agricultural water supplied from the reservoir to irrigation areas using the hydraulic analysis model SWMM. In order to construct a model to analyze the water canal network, network conditions needs to be simplified, and in particular, excessive detail or simplification of the irrigation area can lead to errors in the analysis results. Therefore, the effect of the water canal network model was analyzed by simulating the appropriate simplification process step by step. The results of simplifying the actual block shape of the analysis target area using SWMM showed that there was no significant difference in the results even if 7 lots were simplified to 2. Also, it was found that the construction and analysis of a simplified network model were reliable when the excess quantity was 2% or more compared to the required quantity for each case of analysis of the paddy field.

• 한국농공학회논문집
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• 제63권3호
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• pp.87-95
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• 2021

The Doam Lake Watershed is one of Gangwon-do's non-point source management areas. This area has a lot of snowfall in winter, and it is expected that there will be a lot of soil erosion in early spring due to snow melting. In this study, snow melting was monitored in the Doam Lake watershed from February to 3, 2020. It was conducted to analyze the water quality changes by calculating the concentration of non-point source pollution caused by snowmelt, and to compare the concentration of water quality during snowmelt event with rainfall and non-rainfall event. As a result of water quality analysis, Event Mean Concentration (EMC) at the first monitoring was SS 33.9 mg/L, TP 0.13 mg/L, TN 4.33 mg/L, BOD 1.35 mg/L, TOC 1.84 mg/L. At the second monitoring, EMC were SS 81.3 mg/L, TP 0.15 mg/L, TN 3.12 mg/L, BOD 1.32 mg/L, TOC 3.46 mg/L. In parameter except SS, it showed good water quality. It is necessary to establish management measures through continuous monitoring.

• Weed & Turfgrass Science
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• 제6권1호
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• pp.11-20
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• 2017

우리나라 논에는 28과 90종의 논잡초가 발생하고 있다. 이것을 8개 지역별, 19개 농업기후지대별로 구분하여 잡초방제의 기초자료로 활용하고자 한다. 경기지역에는 20과 52종, 강원지역은 17과 37종. 충북지역은 15과 41종, 충남지역은 12과 21종, 전북지역은 13과 24종, 전남지역은 21과 54종, 경북지역은 20과 36종, 경남지역은 16과 32종이 발생하였다. 과별로 보면, 화본과 > 방동사니과 > 국화과 등으로 순이었고, 지역간에 차이는 있지만 대체로 피속류, 물달개비, 올챙이고랭이, 올방개, 벗풀 등이 우점하였다. 태백준고냉지대에서 14과 31종부터 동해안남부지대의 16과 25종까지 18개(태백고냉지대 제외) 기후지대별로 논에 발생하는 잡초는 다소 차이는 있지만, 피속류, 물달개비, 올챙이고랭이 순으로 발생되었다. 과별로는 방동사니과 > 화본과 > 국화과 등의 순으로 우점하였다. 지역별 및 기후지대별 잡초발생 상황의 차이는 지역적인 개념보다 여러 가지 기상요건에 의한 것이 크게 좌우되었고, 거기에 수반되는 재배양식 변화 그리고 제초제 사용에 따라 차이가 있을 것으로 판단되었다.

• Weed & Turfgrass Science
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• 제4권3호
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• pp.159-175
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• 2015

우리나라 밭에 발생하는 잡초를 조사하여 각 작목별 문제잡초의 현황을 파악하고 잡초방제의 기초자료로 활용하기 위하여 2014년 4~5월 및 7~8월에 2회 실시하였다. 밭에 발생하는 잡초는 총 50과 375종으로 국화과 73종, 화본과 44종, 마디풀과 25종, 십자화과 21종, 콩과 20종 등의 순이었다. 이들 잡초를 생활형으로 구분하면, 일년생 162종, 월년생 78종, 다년생 135종이었다. 보리, 마늘, 양파 등 동계작물 재배지에는 45과 287종, 고추, 콩, 옥수수 등 하계작물 재배지에는 47과 339종이 발생되었다. 우점도별 상위 10초종은 바랭이, 쇠비름, 깨풀, 흰명아주, 속속이풀, 돌피, 한련초, 중대가리풀, 냉이, 참방동사니 순이었다. 외래잡초는 25과 129종으로 흰명아주, 개비름, 망초, 좀명아주, 미국가막사리, 털별꽃아재비 등이었다. 밭잡초 발생정보는 향후 잡초발생 예측, 잡초군락 변화 그리고 밭잡초 방제의 기초자료로 유용하게 사용될 수 있을 것이다.

• Perspectives in Nursing Science
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• 제11권2호
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• pp.101-108
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• 2014

Purpose: The purpose of this study was to compare parenting stress between married migrant women and Korean women. Methods: Subjects were 68 married migrant women and 70 Korean women raising children aged seven years or younger, living in three different cities in Gangwon Do. To measure parenting stress, we used Kim's (1997) questionnaire that had been modified from Richard & Abidin's (1990) Parenting Stress Index (PSI). Results: There were significant differences between the two groups in age, academic credentials, job, monthly income, and achievement of maternal role. No statistically significant differences were found for parenting stress scores (p<.355), but there was a significant difference in the child characteristics of parenting stress (p<.007) between the two groups. There were no differences in the demographic variables influencing parenting stress between the two groups. Conclusion: The development of multi-cultural parenting and family support programs should consider the nationality and marital satisfaction of the family.

• Journal of Ecology and Environment
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• 제37권4호
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• pp.315-325
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• 2014

Aerial algae were sampled from 28 sites on rocks, tree barks, and mosses along the Hongcheon-river in Gangwon-do, Korea, from December 2011 to September 2012 and then cultivated. Seven genera and eight species of the order Chlorococcales were newly recorded in Korea. These were Spongiococcum tetrasporum, Tetracystis aggregata, Myrmecia bisecta, Coenocystis inconstans, Lobosphaeropsis pyrenoidosa, Pseudococcomyxa simplex, Coelastrella oocystiformis, and C. vacuolata. As a result, the known Korean flora of the order Chlorococcales now includes 12 families with 54 genera, 263 species, 76 varieties, and 27 forma, giving a total of 366 taxa.

• Animal Systematics, Evolution and Diversity
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• 제29권4호
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• pp.316-319
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• 2013

In Korea, 104 species of Notodontidae have been recorded. The genus Odontosia H$\ddot{u}$bner is characterized by the elongate and serrate margin of its forewing and the prominent harpe of valva and many spinular cornuti on the vesica of the male genitalia and the robust ductus bursae and large, ovate and sclerotized corpus bursae of the female genitalia. Only one species of Odontosia, O. patricia Stichel, 1918, has been reported from Korea. In this paper, Odontosia sieversii ($M\acute{e}n\acute{e}tri\grave{e}s$, 1856) is newly added to the Korean fauna based on three male specimens collected at Mt. Bangtaesan, Gangwon-do, Korea. Diagnosis for the species and photographs of adult and genitalia of the genus Odontosia are provided.

• Animal Systematics, Evolution and Diversity
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• 제27권3호
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• pp.213-219
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• 2011

Some echinoids were collected from the coast of Gangwon-do during the period from November 2008 to July 2011 and were identified on the basis of morphological characteristics and molecular analysis of cytochrome oxidase subunit I mitochondrial DNA. Among them, Strongylocentrotus pallidus (Sars, 1871) belonging to the family Strongylocentrotidae of the order Camarodonta is reported for the first time in Korea and is redescribed. The genetic differences ranged from 0.038 to 0.139 between S. pallidus and four other species of genus Strongylocentrotus, but ranged from 0.002 to 0.005 between Korean specimens and GenBank data of S. pallidus. This species is widely distributed in cold sea water along the western part of the North Pacific and the Northwest Atlantic.

• Journal of Forest and Environmental Science
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• 제29권1호
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• pp.90-98
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• 2013

The purpose of this study was to understand the geographical and environmental distribution of wild animals in Baekdudaegan region using field survey and GIS data. Crucial factors were selected and analyzed to understand the distributional characteristics of wild animals (7 species in 6 families) and rare endemic plants (14 species in 11 families). These crucial factors include stand factors (forest type, DBH class, and crown density), soil factors (bed rock, soil texture, and organic matter), geographical factors (elevation, slope, aspect) and climatic factors (temperature, rain fall, humidity). Finally, 10 factors were selected by statistical analysis and categorized for analyzing geographical and environmental features. Four families such as Muridae, Sciuridae, Suidae and Talpidea in wild animal showed the similar habitat characteristics with the 10 factors.