• 해양환경안전학회지
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• 제13권1호
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• pp.61-67
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• 2007

본 논문에서는 어장에 침입하는 도적을 감시하기위한 어장보호 시스템의 구현절차와 구현결과를 기술하였다. 이 시스템은 사용자의 요구에 따라 저가부터 고가 및 단순 기능부터 복합 기능 등 다양한 형태로 구성할 수 있도록 설계하였다. 육상으로부터 0.5 마일 이내에 총 50개(가로 10열, 세로 5열)의 케이지가 밀집된 전라남도 진도군 소재 전복 양식장에서 구축한 시스템을 현장 실험하였다. 그 결과, 구축한 시스템이 양식장 전체는 물론 단위 케이지까지 세밀하게 감시할 수 있음을 확인하였다.

• 한국근적외분광분석학회:학술대회논문집
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• 한국근적외분광분석학회 2001년도 NIR-2001
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• pp.1610-1610
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• 2001

Microbiological examination of silage is of little value in gauging the outcome of silage, and so chemical analysis is more reliable and meaningful indicator of quality. On the other hand chemical assessments of the principal fermentation products provide an unequivocal basis on which to judge quality. Livestock require energy, protein, minerals and vitamins from their food. While fresh forages provide these essential items, conserved forages on the other hand may be deficient in one or more of them. The aim of the conservation process is to preserve as many of the original nutrients as possible, particularly energy and protein components (Woolford, 1984). Silage fermentation is important to preservation of forage with respect of feeding value and animal performance. Chemical and bacteriological changes in the silo during the fermentation process can affect adversely nutrient yield and quality (Moe and Carr, 1984). Many of the important chemical components of silage must be assayed in fresh or by extraction of the fresh material, since drying either by heat or lyophilisation, volatilises components such as acids or nitrogenous components, or effects conversion to other compounds (Abrams et al., 1987). Maize silage dorms the basis of winter rations for the vast majority of dairy and beef cattle production in Uruguay. Since nutrient intake, particularly energy, from forages is influenced by both voluntary dry matter intake and digestibility; there is a need for a rapid technique for predicting these parameters in farm advisory systems. Near Infrared Reflectance Spectroscopy (NIRS) is increasingly used as a rapid, accurate method of evaluating chemical constituents in cereals and dried forages. For many years NIRS was applied to assess chemical composition in dry materials (Norris et al., 1976, Flinn et al., 1992; Murray, 1993, De Boever et al., 1996, De la Roza et al., 1998). The objectives of this study were (1) to determine the potential of NIRS to assess the chemical composition of dried maize samples and (2) to attempt calibrations on undried samples either for farm advisory systems or for animal nutrition research purposes in Uruguay. NIRS were used to assess the chemical composition of whole - plant maize silage samples (Zea mays, L). A representative population of samples (n = 350) covering a wide distribution in chemical characteristics were used. Samples were scanned at 2 nm intervals over the wavelength range 400-2500 nm in a NIRS 6500 (NIRSystems, Silver Spring, MD, USA) in reflectance mode. Cross validation was used to avoid overfitting of the equations. The optimum calibrations were selected on the basis of minimizing the standard error of cross validation (SECV). The calibration statistics were R$^2$ 0. 86 (SECV: 11.4), 0.90 (SECV: 5.7), 0.90 (SECV: 16.9) for dry matter (DM), crude protein (CP), acid detergent fiber (ADF) in g kg$\^$-1/ on dry matter, respectively for maize silage samples. This work demonstrates the potential of NIRS to analyse whole - maize silage in a wide range of chemical characteristics for both advisory farm and nutritive evaluation.

• 벤처창업연구
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• 제18권3호
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• pp.61-79
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• 2023

본 연구는 해외 바나나 농장(Farm) 사례연구로서 지역적 한계를 벗어나, 업종에 대한 패러다임 변화측면에서 지금까지 거의 시도되지 못했던 글로벌농업스타트업을 대상으로 하였다. 현지에서 직접 참여·관찰하고 학습된 사업화 과정과 기업가정신, 경영관리 차원에서 '글로벌 농업스타트업' 성공요인을 밝히기 위한 목적으로 연구되었다. 글로벌농업스타트업을 연구하기 위해 글로벌스타트업(Global Startup)과 글로벌농업스타트업(Global Agricultural Startup)에 대한 비교 분석 또한 시도하였다. 실제 분석은 '정의', '구성요소', '성공요인'으로 이루어졌고, 구분 가능한 두개념의 차이를 확인하고자 하였다. 사례분석은 바나나 농장(Farm)을 직접 관찰·경험하는 참여행동연구(Participatory Action Research)의 장점을 최대한 살리고자 하였다. 바나나 농장 사례의 경우 농장개발을 위한 준비과정과 농장개발 및 관리과정으로 구분함으로써 농장관리의 전과정을 통한 방법론과 고려되어지는 다양한 변수까지도 설명하였다. 구체적인 실패사례를 극복하고 대응하는 과정을 통해 연구의 신뢰성과 타당성을 확보하고자 하였으며, 기업가정신과 경영관리 및 조직 관련 사례연구는 기존 선행연구에서 이론화되었던 구성요소와 경영관리에 속하는 이론적 분야들을 세분화해 적용하여 분석하였다. 본 연구는 해외농업 진출 시 자회사나 합작 또는 해외법인 형태로서 진출이 아닌 본사를 해외로 직접 이전하여 현지진출 사업을 일으키는 과정에 대한 거의 최초의 연구이다. 특히 지금까지 소개되지 않았던 글로벌농업스타트업으로서 지역적으로는 아프리카, 규모로는 스타트업, 업종은 농업에 해당하는 특이한 사례이다. 기업가정신(Entrepreneurship)에 있어서도 지금까지 시도되지 않았던 농업사례에서 기업가 정신 구성요소인 혁신성, 위험감수성, 진취성, 비전공유, 사회적기여, 리더십 등이 어떻게 발현되고 효과가 나타나는지도 구체적으로 사례화 했다. 경영관리 및 문화적 측면도 해외사업에서 단지 문화적 측면이 중요하다는 주장에서 더 나아가 채용·직무·임금·퇴직·개발·조직 구조 관리 등에서도 개별 실패사례와 이의 대응사례를 같이 확인하였다. 그 결과, 해외 농업스타트업 기업운영에서 '기업가정신', '영농관리', '경영관리' 측면에 대한 이론적 확인과 더불어 실무적, 대응적 토대를 제시했다는 점에 연구의 의의와 시사점이 존재한다.

• 농업과학연구
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• 제18권2호
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• pp.127-139
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• 1991

1. The purpose of this study was to recommend ways of more efficient pheasant farm business management and promoting the demand of pheasant foods by reviewing the current pheasant farm business management and the general pattern of consumption of pheasant foods. The study was conducted on the basis of the field survey covering 83 pheasant feeders and 283 consumers. 2. Majority of pheasant feeders, 86.8%(n=72), utilized broiler feed for pheasant rearing because of high price of exclusive pheasant feed. 3. In case of producing 1,000 heads of 5 month-old pheasant, the primary production cost per head was roughly calculated at about 5,530 Won. And 40.3% of primary production cost was consisted of feed cost and 12.9% was depreciation cost for facillities including artificial incubator equipments. 4. 81.1%(n=51) of whole surveyed feeders disposed of 1-4 week-old birds directly to the new feeders and 6%(n=6) sold them to the middlemen who were almost pioneering pheasant feeders. 5. 48.9%(n=138) of the surveyed consumer respondents have taken the pheasant foods once and several times, and the others never once. And 50.6%(n=69) of the respondents who had taken the pheasant foods were satisfied with the tastes. 6. The surveyed consumers were asked whether they knew the nutritional value of pheasant foods and 47.3(n=136) recognized it positively and 37.5%(n=106) negatively. 7. To increase the pheasant farm income and promote the demand of pheasant foods. followings are recommended. - Production cost should be reduced by cooperative utilization of facilities and equipments at farm level, and exclusive pheasant feed of good quility should be developed and supplied to the feeders at a low price. - Pheasant marketing and pricing system should be improved to prevent consumers from price disorder of retail shop including pheasant food reataurants and to popularize the pheasant foods. - Various type of menu of pheasant foods should be developed not only to satisfy consumers in tastes but also to solve the seasonality of pheasant supply. But it is preferable that this action is led by pheasant feeders and their cooperative organization, espectially through vertical intergration system owned by pheasant feeders. - Generic, pioneering advertisement and promotion should be carried out to promote primary demend of pheasant foods. It would be preferable that these primary demend advertising and promoting activities shuld be sponsored by pheasant feeders and government together. And their activities should be supported by institutional regulation.

• Asian-Australasian Journal of Animal Sciences
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• 제22권2호
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• pp.216-224
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• 2009

In Japan, since rice consumption has been decreasing with the westernization of Japanese eating habits, surplus paddy fields have been increasing. If these surplus paddy fields can be utilized for forage rice production as feed for animal production and excretions (feces and urine) from animal production can be applied to the paddy fields as manure, then the problems of surplus paddy fields and excretions from animal production may be solved, and the environment kept sustainable. The objectives of the present study were to apply a bio-economic model to dairy and forage rice integration systems in Japan and to examine the merit of introducing whole crop rice silage (WCRS), as well as economic and environmental effects of various economic and management options in the systems. Five simulations were conducted using this model. The use of WCRS as a home-grown feed increased environmental loads and decreased economic benefit because of the higher amount of purchased feed, when compared to the use of typical crops such as maize, alfalfa and timothy silage (simulation 1). Higher economic benefits from higher forage rice yields and higher milk production of a dairy cow were obtained (simulations 2, 3). There were no economic and environmental incentives for utilizing crude protein (CP) rich WCRS, because an increase in the CP content in WCRS led to the use of more chemical fertilizers, resulting in high production costs and nitrogen outputs (simulation 4). When evaluated under the situation of a fixed herd size, increasing forage rice yields decreased the total benefit of the production, in spite of the fact that the amount of subsidies per unit of land increased (simulation 5). It was indicated that excess subsidy support may not promote yield of forage rice. It was, however, observed in most cases that dairy and forage rice integration systems could not be economically established without subsidies.

• 한국유기농업학회지
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• 제22권2호
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• pp.321-334
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• 2014

국내 식물자원 및 약용식물들의 식물 생장촉진 효과를 조사하기 위하여 64종 65점의 추출물 시료를 조제하여 벼(Oryza sativa) 유묘 생장에 미치는 영향을 평가하였다. 그 결과, 11종 12점의 쑥(Artemisia princeps) 경엽, 엉겅퀴(Cirsium japonicum var. maackii) 전초, 진달래(Rhododendron mucronulatum) 가지와 잎, 갈대(Phragmites communis) 줄기, 율무(Coix lacrymajobi var. mayuen) 전초, 싸리(Lespedeza bicolor) 가지와 잎, 산수국(Hydrangea serrata f. acuminata) 전초, 속단(Phlomis umbrosa) 전초, 감초(Glycyrrhiza uralensis) 근경, 감초(G. uralensis) 경엽, 당귀(Angelica gigas) 뿌리 및 천궁(Cnidium officinale) 근경 추출물은 벼 유묘 생장을 촉진시키는 것으로 나타났다. 본 결과에 따라 상기 식물 종의 부위들은 식물 생장촉진용 농가 자가제조 액비 개발을 위한 소재로써 활용가능성이 있는 것으로 판명되었다.

• Animal Bioscience
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• 제37권3호
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• pp.461-470
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• 2024

Objective: The objective of this study was to investigate the genetic diversity, population structure and whole-genome selection signatures of Luxi cattle to reveal its genomic characteristics in terms of meat and carcass traits, skeletal muscle development, body size, and other traits. Methods: To further analyze the genomic characteristics of Luxi cattle, this study sequenced the whole-genome of 16 individuals from the core conservation farm in Shandong region, and collected 174 published genomes of cattle for conjoint analysis. Furthermore, three different statistics (pi, F_st, and XP-EHH) were used to detect potential positive selection signatures related to selection in Luxi cattle. Moreover, gene ontology and Kyoto encyclopedia of genes and genomes pathway enrichment analyses were performed to reveal the potential biological function of candidate genes harbored in selected regions. Results: The results showed that Luxi cattle had high genomic diversity and low inbreeding levels. Using three complementary methods (pi, F_st, and XP-EHH) to detect the signatures of selection in the Luxi cattle genome, there were 2,941, 2,221 and 1,304 potentially selected genes identified, respectively. Furthermore, there were 45 genes annotated in common overlapping genomic regions covered 0.723 Mb, including PLAG1 zinc finger (PLAG1), dedicator of cytokinesis 3 (DOCK3), ephrin A2 (EFNA2), DAZ associated protein 1 (DAZAP1), Ral GTPase activating protein catalytic subunit alpha 1 (RALGAPA1), mediator complex subunit 13 (MED13), and decaprenyl diphosphate synthase subunit 2 (PDSS2), most of which were enriched in pathways related to muscle growth and differentiation and immunity. Conclusion: In this study, we provided a series of genes associated with important economic traits were found in positive selection regions, and a scientific basis for the scientific conservation and genetic improvement of Luxi cattle.

• 한국유기농업학회지
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• 제10권3호
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• pp.25-39
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• 2002

This paper aims to provide quite recent information on the organic industry in the U.S. Major focuses are on the development of cultivation and marketing of fresh and processed organic produce and foods, newly enforced certification program, consumers' purchasing behaviors toward organic foods, and social survey results administered to the organic farmers in the U.S. The U.S. recorded 8 billion dollars' sale of organic foods in 2000, which was the largest in the world and showed 23% growth compared to the previous year. Yet the organic industry is still a niche market, occupying merely 1.5% of total food sale amount. The natural foods markets have not been so concentrated in the U.S., but it is changing and a few wholesale mart such as Whole Foods is emerging. Recent introduction of new certification program provide unified and sole standard at the federal level to which every certifier needs to adjust itself in order to be acceredited by the government. According to a social survey, consumers purchase organic foods because they concern about health, they stick to their own modes of life favoring natural foods, and so on. Another social survey shows that most organic farmers sell their produces to wholesalers, distributers, or producer coop, and direct sale to visitors at their own farm comprises of about 8 percent of their organic land.

• 한국작물학회지
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• 제43권2호
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• pp.95-100
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• 1998

Seedling establishment of soybean [Glycine mar (L.) Mer-rill] is an important factor for soybean production in the field. The objective of this study was to determine the distribution of chemical composition in the emerging organs during seedling development in soybeans. Three soybean cultivars (Hill, Paldalkong, and Jangyeobkong) were planted at the Research Farm of College of Natural Resources, Korea University, on May 26, June 5, and June 14. Protein, oil, sugar, and starch contents were measured in each organ at each developing stage. Mean dry weight of three soybean cultivars decreased until VE stage and increased after this stage. Protein content of whole seedling did not change significantly during the seedling growth stage, but the amount in cotyledons markedly decreased with each growth stage increment. About 88% of the cotyledon protein was translocated to the other parts of the seedling at the V2 stage. Oil content of cotyledons sharply decreased until the V1 stage. Sugar content of the seedling was not detected at VE stage and starch content of seedlings increased slightly at VE and VC stages. For the changes of each metabolic component, the amount for whole plants decreased until the V1 stage and started to increase after this stage. The results of this study provide evidence for the breakdown of carbohydrates and oil at the initial stage of seedling growth.

• 한국축산시설환경학회지
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• 제7권2호
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• pp.63-76
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• 2001

A survey was conducted for dairy farmer to manage efficiently of a milking machine and equipment. Labor hours, operation costs, and milking cares for each dairy farmer to estimate the expected numbers of machine and equipment on the basis of the desired dairy farm scale. Based on the results of this research the following conclusions were made: Those who possessed a herringborn system and a tandem parlour system were relatively small portion 2% and 25% respectively of the whole dairy farmer. To improve dairy farmer\`s life, or to reduce his hard labor hours. it was necessary for most of dairy farmers to possess a herringborn system and a tandem parlour system. However, it was difficult for most of farmers to purchase a herringborn system and a tadem parlour system, because these system were very expensive. Only 20% farmers of the whole farmers repaired their milking system, which needed to be repaired quickly enough so that it might was used everyday. Among the parts of milking system, pulsator was found to have the highest breakdown ratio 59%, and vacuum pump was the breakdown ratio 27%. It took more than 2 hours to be milked twice a cow per one day. It means that milking spend so much time. Therefore, the auto milking system should be supplied to decrease hard labor hour.