• Animal Bioscience
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• 제37권7호
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• pp.1213-1224
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• 2024

Objective: Enterotypes (ETs) are the clustering of gut microbial community structures, which could serve as indicators of growth performance and carcass traits. However, ETs have been sparsely investigated in waterfowl. The objective of this study was to identify the ileal ETs and explore the correlation of the ETs with growth performance and carcass traits in Muscovy ducks. Methods: A total of 200 Muscovy ducks were randomly selected from a population of 5,000 ducks at 70-day old, weighed and slaughtered. The growth performance and carcass traits, including body weight, dressed weight and evidenced weight, dressed percentage, percentage of apparent yield, breast muscle weight, leg muscle weight, percentage of leg muscle and percentage of breast muscle, were determined. The contents of ileum were collected for the isolation of DNA and 16S rRNA gene sequencing. The ETs were identified based on the 16S rRNA gene sequencing data and the correlation of the ETs with growth performance and carcass traits was performed by Spearman correlation analysis. Results: Three ETs (ET1, ET2, and ET3) were observed in the ileal microbiota of Muscovy ducks with significant differences in number of features and α-diversity among these ETs (p<0.05). Streptococcus, Candida Arthritis, and Bacteroidetes were the presentative genus in ET1 to ET3, respectively. Correlation analysis revealed that Lactococcus and Bradyrhizobium were significantly correlated with percentage of eviscerated yield and leg muscle weight (p<0.05) while ETs were found to have a close association with percentage of eviscerated yield, leg muscle weight, and percentage of leg muscle in Muscovy ducks. However, the growth performance of ducks with different ETs did not show significant difference (p>0.05). Lactococcus were found to be significantly correlated with leg muscle weight, dressed weight, and percentage of eviscerated yield. Conclusion: Our findings revealed a substantial variation in carcass traits associated with ETs in Muscovy ducks. It is implied that ETs might have the potential to serve as a valuable biomarker for assessing duck carcass traits. It would provide novel insights into the interaction of gut microbiota with growth performance and carcass traits of ducks.

• 한국농업기계학회:학술대회논문집
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• 한국농업기계학회 1996년도 International Conference on Agricultural Machinery Engineering Proceedings
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• pp.293-304
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• 1996

Historical interest in dielectric properties of agricultural products and definitions of dielectric terms and basic principles governing their influence on elelctromagnetic energy are presented briefly . The nature of dielectric properties variation with frequency, temperature , and product density is discussed, Graphical data on the dielectric properties of products are presented that illustrate the dependence of these properties on moisture content, frequency, temperature, and density. Applications microwave dielectric properties of agricultural products are cited that include radio-frequency (RF) and microwave heating for seed treatment, improvement of nutritional and keeping qualities of some products, and controlling insects in grain. Uses of dielectric properties for product quality measurement and the rapid determination of moisture content are described. Principle of moisture determination in bulk grain by RF and microwave measurements are briefly presented.

• Agricultural and Biosystems Engineering
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• 제4권1호
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• pp.1-7
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• 2003

Internal defects such as browning of the flesh and blackening and rot of the ovary of pear can be easily developed because of the inadequate environmental conditions during the storage and distribution of fruit. The quality assurance system for the agricultural product is to be settled in Korea. All defected agricultural products should be excluded prior to the distribution to enhance the commercial values. However, early stage on-line defect detection of agricultural product is very difficult and even more difficult in a case of the internal defects. The goal of this research is to develop a system that can detect and classify internal defects of agricultural produce on-line using VIS/NIR transmittance spectroscopy. And Shingo pear, which is one of the famous species of Korean pear, was used for the experiment. Soft independence modeling of class analogy (SIMCA) algorithm was employed to analyze the transmittance spectroscopic data qualitatively. On-line classification system was constructed and classification model was developed and validated. As a result, the correct classification rate (CCR) using the developed classification model was 96.1 ％.

• 농업생명과학연구
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• 제43권2호
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• pp.65-78
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• 2009

본 연구는 농산물인터넷 쇼핑몰을 이용하는 소비자들의 만족도에 영향을 미치는 요인들을 조사분석하고, 그 만족요인과 구전(추천)의도와의 관계를 규명하는데 목적을 두었다. 실증적 분석결과를 요약하면 인터넷 쇼핑몰 구매동기는 신뢰성보다 편리성이 가장 큰 요인으로 나타났다. 고객만족요인은 신뢰성, 상품의 다양성, 배송 및 고객지원, 보안성 등으로 조사되었으며, 이에 대한 만족도는 배송 및 고객지원이 가장 높고, 상품의 다양성은 다소 낮았다. 인터넷 쇼핑몰 활성화를 위한 개선과제는 반품, 환불 및 고객불만 사항의 신속한 처리가 가장 요구되고 있으며, 안전하고 다양한 결제시스템의 구축, 다양한 이벤트 및 고객서비스, 물량조달체계의 구축 등이 필요한 것으로 나타났다. 특히 서비스품질에 있어서 신뢰성과 보안성에 대한 소비자만족이 구전의도에 크게 영향을 미치며, 시스템 품질에 대한 만족도 구전의도에 비교적 큰 영향을 미치는 것으로 나타남으로써 이에 대한 개선이 시급한 것으로 판단된다.

• 한국지역사회생활과학회지
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• 제20권3호
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• pp.397-411
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• 2009

The use of local product foods and fresh-cut products, the dietitian's recognition, the required items and the quality for school foodservice was investigated to increase the consumption of high-quality agricultural products. Data from 578 elementary schools, 228 middle schools and 116 high schools were collected by school foodservice personnels in each regional Education Administration in Gyeong-gi province. The first criteria of buying food materials was reliability/safety for all school foodservice. The second criteria were the origin of the product and freshness/ripeness for elementary and middle schools and high school, respectively. The most important consideration for selecting a supplier was the quality of the material. The appearance/status of the food was the first factor for buying food materials. The origin and the seasonality were very important for buying farm products. Dietitians in Gyeong-gi province recognized the local products, and used them weekly. The advantages of using local products were the quick supply, freshness and safety. On the other hand, the disadvantages were the lack of information and the uncertainty of supply. Sixty eight percent of the subjects had experienced the high-quality agricultural products in school meals, but the frequency was low. The main reasons for not servicing high-quality agricultural products were the high cost and the lack of trust on the quality. Among fresh-cut products, seasonings and root vegetables were purchased most frequently, but leaf vegetables was 5.7% only. The purchase of fresh-cut products was not frequent, but usually satisfied. The advantages of fresh-cut products were the reduced workload and waste, but the reason for not using them were poor hygiene and the high price. The diverse supply system and the promotion of the local product foods would be necessary since the most food materials were purchased through suppliers. In addition, the problems related to the high cost and distrust should be resolved to expand the consumption of the high-quality agricultural products and the fresh-cut vegetables. The institutions for certifying the quality should be needed to increase the confidence of these products.

• 한국산학기술학회논문지
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• 제17권11호
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• pp.682-690
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• 2016

농산물 브랜드는 양적인 성장은 이루었지만 질적인 성장이 미미한 현실에 대안을 제시하기 위해 본 논문에서는 농산물 브랜드자산의 구성요인을 발굴하고, 구성요인들이 브랜드자산에 미치는 영향을 계량적으로 분석하였다. 분석을 위해 소비자들에 대한 구조화된 설문지를 활용하여 통계분석에 사용하였으며, 주요 분석결과를 요약하면 다음과 같다. 첫째, 브랜드 및 브랜드자산 관련 다양한 선행연구들을 중심으로 농산물 브랜드자산 구성요인에 대한 이론적 검토를 진행하였으며, 농산물 브랜드자산의 구성요인을 인지도, 품질력, 충성도로 설정하였다. 둘째, 농산물 브랜드자산의 세부 구성요인에 대해 요인분석 결과 인지도는 친숙도, 최초상기도, 일반적 인지도, 보조인지도, 회자정도, 로고기억정도, 품질력은 품질 지속성, 품질 신뢰성, 품질 안전성, 전반적 품질정도, 가격대비 품질 우수성, 충성도는 주위권유, 구매의도 가격프리미엄, 재구매의향이 선정되었다. 셋째, 농산물 브랜드자산에 미치는 요인에 대한 영향력을 분석한 결과 인지도, 품질력, 충성도 수준 모두 1% 유의수준에서 통계적으로 유의하게 나타나 해당 수준이 높아질수록 브랜드자산이 증가하는 것으로 분석되었다. 넷째, 표준화계수를 활용한 브랜드자산에 가장 큰 영향을 주는 구성요인은 쌀과 조미채소는 품질력의 표준화계수가 각각 0.486와 0.581로 제일 높에 나타났고, 과수와 과채는 충성도가 각각 0.536과 0.490으로 가장 높게 분석되었다. 최종적으로 작목에 따른 브랜드 육성정책에 있어서 인지도, 품질력 및 충성도 측면으로부터 접근한 다양한 정책을 개발하는 것이 효과적인 결과를 유발할 수 있으며, 쌀과 조미채소는 정책적 주안점을 품질력제고 관련 정책에 집중하고, 과수와 과채는 충성도제고 관련 정책에 보다 집중하는 것이 제한된 자원을 효율적으로 활용할 수 있는 방향이라고 할 수 있다.

• Journal of Biosystems Engineering
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• 제41권4호
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• pp.389-395
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• 2016

Purpose: Drying is one of the most widely used methods for preserving agricultural products or food. The main purpose of drying agricultural products is to reduce their water content for minimizing microbial spoilage and deterioration reaction during storage. Methods: Although numerous drying methods are successfully applied to dehydrate various agricultural products with little drying time, the final quality of dried samples in terms of appearance and shape cannot be guaranteed. Therefore, based on published literature, this review was conducted to study the drying characteristics of various agricultural products when different drying methods were applied. Results: An increase in the drying power of sources-for example, increase in hot air temperature or velocity, infrared or microwave power-and the combination of drying power levels can reduce the drying time of various agricultural products. In addition, energy efficiency in drying significantly relies on the compositions of the dried samples and drying conditions. Conclusions: The drying power source is the key factor to control entire drying process of different samples and final product quality. In addition, an appropriate drying method should be selected depending on the compositions of the agricultural products.

• 고려인삼연구와산업
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• 제14권1호
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• pp.2-8
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• 2020

• 한국농공학회논문집
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• 제65권1호
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• pp.51-59
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• 2023

The study is to evaluate the effect of bank protection concrete block products to streams and soils. The effect on three types of bank protection concrete blocks was evaluated.. The first type was manufactured using fly ash, and the second and third type products used fine blast furnace slag powder. The laboratory and field Experiments test results showed the pHs of 9 or less. Also, any heavy metals were not detected in the heavy metal leaching tests. Although some iron (Fe) was partially detected, it still met the water quality standards. In addition, heavy metal was detected from all blocks by the US drinking water evaluation standards method. An on-site water quality and soil contamination tests were performed at the places that the blocks were implemented in practice. The test results showed that the application of the bank protection concrete block product did not lead to the water and soil quality degradation. Therefore, it was found that the hardened bank protection concrete block product did not elute harmful substances such as heavy metals that affect water and soil quality degradation.

• 한국농공학회논문집
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• 제61권2호
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• pp.75-83
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• 2019

Using geographical indication, a type of source identification, can effectively promote local specialty agricultural products of superior quality, by identifying the specific geographic location or origin of the produce. Agricultural products can be registered using the geographical indication by describing the product's relation to its geographical origin including the reputation and quality. However, this indication has no objective standards to qualify goods as agricultural specialty products. The purpose of this study is to suggest basic criteria to define the characteristics and criteria of agricultural specialties based on a quantitative evaluation method. To propose this basic standard, we used the proportion of arable land to denote the major production areas and the location quotient (LQ) index to grasp the extent of the specialty of a product. The results show that the average LQ values of registered agricultural products, particularly apples, pears, and garlic, are 3.26, 8.01, and 2.82, respectively. This indicates that they are more specialized than produce from other areas that have not registered for a geographical indication. Low LQ values were found in some areas with registered rice geographical indications, which are also more focused on their historical reputation as the main rice producing areas. Considering the agricultural specialty of products, the recommendation is that the producing proportion should be over 1% of the national scale and over 10% of the province scale, and the LQ value should be over 2.0. This recommendation is not a requirement, but the criteria can prove to be useful in identifying a higher range of specialized agricultural products.