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버뮤다그래스 페어웨이에 퍼레니얼라이그래스 오버시딩에 따른 두 초종의 밀도 및 품질 변화와 Trifloxysulfuron-sodium 처리에 의한 전이시기 조정
김대근,전재만,오상익,심규열,Kim, Dae-Gun,Jen, Jae-Man,Oh, Sang-Ik,Shim, Gyu-Yul 한국잔디학회 2012 한국잔디학회지 Vol.26 No.2
When perennial ryegrass was overseeded in bermudagrass fairway, shoot density of perennial ryegrass was gradually increased to $88,000/m^2$ at the end of May, however dramatically decreased to 0 in September over the rainy season. On the other hand, that of bermudagrass increased from $2,000/m^2$ in March to $20,000/m^2$ in early June, and then decreased to $4,000/m^2$ at the end of July, after the rainy season, rapidly increased to $50,000/m^2$ in early September. Overseeding bermudagrass fairway with perennial ryegrass was maintained a good quality from mid-April to mid-June and decreased the quality over the rainy season from late June to July, and then turf quality was decrease to the worst level at the end of July. After the rainy season fairway quality was improved gradually and was the highest-level during September and early October. Trifloxysulfuron-sodium was treated to minimize the deterioration in turf quality due to early bermudgrass transition time in spring. Consequently, transition was started in mid-May and shoot density of bermudagrass treated by trifloxysulfuron-sodium was $70,000/m^2$ in mid-June. Even in the rainy season it was sustained as $30,000/m^2$, approximately three times higher than that of untreated overseeding fairway. 버뮤다그래스에 퍼레니얼라이그래스를 오버시딩 했을 때 퍼레니얼라이그래스의 밀도는 3월부터 점차적으로 증가하여 5월 말에는 88,000주/$m^2$를 유지하였다. 그러나 장마기를 거치면서 급격히 줄어들어 9월 초순경에는 0주/$m^2$가 되었다. 반면에 버뮤다그래스의 밀도는 3월경에 2,000주/$m^2$에서 온도가 증가함에 따라 점차 증가하여 5월 중순경에 10,000주/$m^2$, 6월 초순경에는 20,000주/$m^2$로 증가하였으며, 장마기를 거치면서 일조량 부족으로 7월 중순경에는 4,000주/$m^2$로 떨어졌다. 장마 후에는 밀도가 급격히 증가하여 9월 초순경에는 50,000주/$m^2$ 정도를 유지하였다. 퍼레니얼라이그래스로 오버시딩한 버뮤래스 페어웨이의 품질은 4월 중순부터 6월 중순까지 좋은 품질이 유지되다가 장마기이후 7월말에 가장 나빴으나 이후 점차 향상되어 9월 초순부터 10월 초순까지 좋은 품질을 나타내었다. 봄철 버뮤다그래스의 전이시기를 앞당겨 장마기의 품질저하를 최소화하기 위하여 trifloxysulfuron-sodium을 처리한 결과, 5월중순경부터 버뮤다그래스로 전이가 이루어져 6월 중순경에는 70,000주/$m^2$ 정도의 밀도를 보였으며 장마기에도 약 30,000주/$m^2$를 유지하여 무처리구에 비하여 약 3배 이상의 높은 밀도를 유지하였다.
돼지에서 생체 분해 금속성 전달체를 활용한 구제역 백신의 적용 연구
조아라 ( Ara Cho ),오상익 ( Sang-ik Oh ),최창용 ( Changyong Choe ),정영훈 ( Young-hun Jung ),도윤정 ( Yoon Jung Do ),김수희 ( Suhee Kim ),추현욱 ( Hyun Wook Choo ),구종수 ( Jong Su Gu ),정우진 ( Woo-jin Chung ),조성윤 ( Sung Youn 한국동물위생학회 2020 한국동물위생학회지 (KOJVS) Vol.43 No.3
In this study, we applied biodegradable drug delivery carries (BDDC) for food-and-mouth (FMD) vaccination. After FMD vaccination using BDDC, we estimated the percentage inhibition (PI) of antibody, decomposed patterns, and histopathologic features of BDDC. PI of antibody was higher than 50 at two weeks after injection and sustained positive PI until 10 weeks after injection. BBDC injection group showed significantly an increased pattern of blood monocyte at two and three weeks after injection. According to the Micro CT, micro-cracks were observed at two weeks after injection and the morphology of BDDC was lost at four weeks after injection. For histopathological examination, acute inflammation with neutrophil infiltration and micro-metallic residues were observed around BDDC until four weeks after injection and inflammatory responses gradually decreased at 10 weeks. Based on our experiment, BDDC is considered as an alternative way to vaccine injection for veterinary applications. Our study can be used as basic data for the drug delivery system using biodegradable metals in the future.
봉독의 젖소 유방염 유래 그람 양성 및 음성 세균별 항균효과 분석
정숙한 ( Sukhan Jung ),오상익 ( Sang-ik Oh ),이한규 ( Han-gyu Lee ),정영훈 ( Young-hun Jung ),허태영 ( Tai-young Hur ),한상미 ( Sangmi Han ),백귀정 ( Kui-jeong Baek ),조아라 ( Ara Cho ) 한국동물위생학회 2021 한국동물위생학회지 (KOJVS) Vol.44 No.3
Mastitis is an inflammatory condition of the mammary gland, most often caused by bacterial infections, resulting in significant economic losses to the dairy industry. Antimicrobial resistance has been of great concern because of the extensive clinical use of antibiotics. For this reason, the development of new compounds as an alternative treatment to bovine mastitis is needed. Bee venom has been widely used as an oriental treatment for several inflammatory diseases and bacterial infections. The aim of the present study was to evaluate the antimicrobial activity of bee venom on bacteria isolated from bovine mastitis. A total of 107 isolates from bovine mastitic milk samples collected in 2019 and 2020 in Jeonbuk province. All bacterial isolates were tested for susceptibility to bee venom of the honey bee (Apis mellifera). In order to obtain comprehensive antibacterial activities of the bee venom, we measured the minimal inhibitory concentration (MIC) of the bee venom against bacterial strains. Bee venom showed significant inhibition of bacterial growth of Gram-negative bacteria Citrobacter spp., Escherchia coli, Klebsiella spp., Pseudomonas spp., Serratia spp. and Raoultella with MIC values of 96, 81, 72, 230, and 85 μg/mL, respectively, and Gram-positive bacterial Enterococcus spp., Staphylococcus spp. and Streptococcus spp. with MIC values of 29, 21 and 16 μg/mL, respectively. The results indicated that the MIC values were different depending on the bacterial strains, and those of Gram-positive bacteria were lower than those of Gram-negative bacteria for bee venom. These findings suggested that bee venom could be an effective antimicrobial treatment for bovine mastitis; however, further research is necessary to evaluate the mechanism underlying the antimicrobial action, its effectiveness/safety in vivo and effective application for therapeutic use.
조세지,김종완,김하영,오상익,정소정,정지아,조아라,이명헌,조호성,변재원,Cho, Se-Ji,Kim, Jong Wan,Kim, Ha-Young,Oh, Sang-Ik,Jeong, So Jeong,Jung, Ji-A,Cho, Ara,Lee, Myoung-Heon,Cho, Ho-Seong,Byun, Jae-Won 대한수의학회 2015 大韓獸醫學會誌 Vol.55 No.1
Brachyspira (B.) hyodysenteriae is a causative agent of swine dysentery that is responsible for death and economic losses in the pig industry. It is imperative that clinical samples be delivered fresh for accurate diagnosis. The viability and DNA detection of B. hyodysenteriae using lab-made (phosphate buffered saline and modified tryptic soy broth) or commercial transport media (C, D, and E) were compared by culturing and real-time PCR at $4^{\circ}C$ or room temperature (RT), respectively. B. hyodysenteriae grown in D (Anaerobe Systems, USA) and E (Starplex Scientific, Canada) media was viable for 4 days at $4^{\circ}C$ and RT. However, B. hyodysenteriae in A, B, and C (culture swab; BD Biosciences, USA) media were not recovered after 2 days at RT. Ct values for real-time PCR at $4^{\circ}C$ and RT ranged from $27.2{\pm}2.1$ (C) to $29.6{\pm}0.5$ (B), and $28.0{\pm}0.9$ (E) to $30.2{\pm}1.5$ (B), respectively. Considering the field conditions, it is important that transport media is used for specimen isolation and PCR to obtain an accurate diagnosis of swine dysentery.
면역 크로마토그래피법을 이용한 국내 반려견의 Dog erythrocyte antigen 1 분포도 조사 연구
김은주,최창용,류재규,오상익,정영훈,조아라,김수희,도윤정,Kim, Eunju,Choe, Changyong,Yoo, Jae Gyu,Oh, Sang-Ik,Jung, Younghun,Cho, Ara,Kim, Suhee,Do, Yoon Jung 대한수의학회 2018 大韓獸醫學會誌 Vol.58 No.2
Blood group determination in dogs is an important factor in transfusion medicine to minimize immediate or delayed adverse reactions after red blood cells transfusion in small animal clinics. Dog erythrocyte antigen (DEA) 1 is the most important blood type due to its high degree of antigenicity causing acute transfusion adverse reactions. The aim of this study was to investigate the prevalence of DEA 1 in various dog breeds in Korea. As a result of testing 592 blood samples from more than 35 dog breeds, DEA 1 blood typing for each breed showed that 57.8% of Malteses, 63.3% of Poodles, 76.2% of Mastiff-like dogs, 72.5% of Pomeranians, 47.7% of Shih Tzus, 70.3% of mixed breeds, 60.0% of Yorkshire Terriers, and 71.4% of Beagles were DEA 1-positive. Miniature Schnauzers and Jindo breeds had a significantly high prevalence (100%) of DEA 1-positive dogs compared to that in other small breed dogs. This is the first report of immunochromatography-detected DEA 1 prevalence in various domestic dog breeds. Although additional studies need clarifying the potential blood transfusion risks in domestic breed dogs with DEA 1, the results of this study may be useful when selecting a blood donor.
최근 10년간 국내 소 질병 원인체에 관한 문헌적 고찰
이한규 ( Han Gyu Lee ),조아라 ( Ara Cho ),오상익 ( Sang-ik Oh ),노재희 ( Jae-hee Roh ),정영훈 ( Yong Hoon Jung ),최창용 ( Changyong Choe ),도윤정 ( Yoon Jung Do ),엄재구 ( Jae Ku Oem ),손동수 ( Dong-soo Son ),류재규 ( Jae Gyu Yoo 한국동물위생학회 2020 한국동물위생학회지 (KOJVS) Vol.43 No.3
For estimating the prevalence of bovine infectious disease agents, the pathogens were classified as follows: the digestive disease agents, respiratory disease agents, reproductive disease agents, and tick-borne disease agents. This study covered 81 published papers regarding bovine infectious diseases in Korea that determined the presence of diverse pathogens or the antibodies elicited by the infectious agents in cattle from 2010 to 2019. In total, 59,504 cows were involved in the papers reporting the causative agents in their cases. The disease prevalence for the digestive, respiratory, reproductive, and tick-borne cases was 9.0%, 13.4%, 10.4%, and 7.8%, respectively. Bovine viral diarrhea virus, Escherichia coli, Mycobacterium avium subsp. paratuberculosis, and Eimeria spp were more significantly prevalent in the cows under one-year age than over one-year age. Bovine viral diarrhea virus, Escherichia coli, Mycobacterium avium subsp. paratuberculosis, and Anaplasma spp. were more significantly prevalent in Hanwoo than dairy cattle. Coxiella burnetii, Neospora caninum, and Theilieria spp. were more significantly prevalent in dairy cattle than Hanwoo. Tick-borne disease agents were more prevalent in cows grazing than the case in housing. Our analytic data obtained from this study emphasize the need for more studies on the occurrence of these pathogens according to the breed, age, and the region, to come up with bovine infectious disease control measures in Korea.
전라북도 지역 동물병원에 내원한 반려견의 주요 품종별 질환 양상 조사
김은주 ( Eunju Kim ),최창용 ( Changyong Choe ),류재규 ( Jae Gyu Yoo ),오상익 ( Sang-ik Oh ),정영훈 ( Younghun Jung ),조아라 ( Ara Cho ),김수희 ( Suhee Kim ),도윤정 ( Yoon Jung Do ) 한국동물위생학회 2018 한국동물위생학회지 (KOJVS) Vol.41 No.2
Recently, demographic studies of veterinary medical database have been conducted to understand patterns of disease occurrence. Understanding incidence of breed-related disease would provide appropriate guidance for future health care strategies and offer useful information for early diagnosis of disease. However, in veterinary medicine, theses research has not yet been investigated in the Republic of Korea. The purpose of this study was to investigate the prevalence of common medical disorders among dog breeds examined at primary-care veterinary clinics in Jeollabuk-Do, Republic of Korea. The data were analyzed based on World Health Organization’s International Classification of Disease. A total 13,176 medical records of canine patients were analyzed from six primary veterinary clinics in Jeollabuk-Do from January to December 2016. Results showed that the most common health problems were ‘disease of skin’ (17.7%); followed by ‘diseases of digestive system’ (12.26%), ‘preventive medicine’ (10.08%), and ‘diseases of ear and mastoid process’ (10.4%). In seven out of ten breeds, the most common medical disorder was skin disease. For poodle such as Pomeranian and Chihuahua, digestive system disease was most prevalent. On the other hand, respiratory system disease was found to be higher in Pomeranian than other breeds; while ear and mastoid process disease was most common for Maltese and Poodle. This study can help owners, breeders, and veterinarians prevent and manage various diseases of popular breeds in Jeollabuk-Do in the future.
도축 젖소에서 Trueperella pyogenes 감염에 의한 턱 밑 화농육아종 증례보고
정지열 ( Ji-youl Jung ),정재훈 ( Jae-hun Jeong ),김하영 ( Ha-young Kim ),오상익 ( Sang-ik O ),류대열 ( Dae Yeol Ryu ),윤형록 ( Hyoung Lok Yoon ),소병재 ( Byung Jae So ),윤순식 ( Soon-seek Yoon ) 한국동물위생학회 2016 한국동물위생학회지 (KOJVS) Vol.39 No.1
Multiple enlarged submandibular nodules were discovered during a routine antimortem examination at slaughter in 3 dairy cows of 20-month-old. Grossly, submandibular nodules were firm, reddish, and oval in shape. On cut surface, multiple yellowish abscesses in the parenchyma were observed. Histopathologically, the nodules were characterized by severe diffuse pyogranulomatous inflammation and chronic fibrosis with multiple eosinophilic clubs of Splendore-Hoeppli material containing central bacterial colonies. Trueperella pyogenes was isolated from the lesions. This case was diagnosed as submandibular pyogranuloma caused by Trueperella pyogenes in slaughtered dairy cows in Korea.
김제 지역 한우 송아지의 크립토스포리듐, 지알디아 발생 현황
이한경 ( Han-kyoung Lee ),소경민 ( Kyoung-min So ),오상익 ( Sang-ik Oh ),노재희 ( Jae-hee Roh ),김미숙 ( Mi-suk Kim ),강명금 ( Myoung-geum Kang ),정숙한 ( Suk-han Jung ),정영훈 ( Young-hun Jung ),조아라 ( Ara Cho ),이한규 ( Han Gy 한국동물위생학회 2021 한국동물위생학회지 (KOJVS) Vol.44 No.2
This study was performed to identify the prevalence of cryptosporidiosis and giardiasis in diarrhea feces of Korean native calves raised in Gimje, Jeollabuk-do, with a rapid diagnostic kit. The prevalence of both diseases were classified according to the age of calf, season of sampling period, and sampled farm where diarrheic calf is commonly observed. In diarrhea feces of 431 calves, cryptosporidiosis had a high incidence rate between 1 and 3 weeks of age, whereas giardiasis showed a high incidence between 4 and 6 weeks of age. It is thought that the incidence of protozoan diseases is markedly influenced by the calf’s postnatal age. Regarding with the sampling season, the prevalence of cryptosporidiosis and giardiasis in calves was significantly higher in spring and summer than in autumn and winter (P<0.05). Among the sampled farms where both diseases are commonly observed, cryptosporidiosis was more frequently detected than giardiasis in calves. Particularly, in farms where cryptosporidiosis is common, it tends to be a disease that is difficult to eradicate as it occurs continuously throughout the year. Hygiene management such as regular cleaning and disinfection of the livestock and the surrounding environments is considered necessary to reduce and prevent damage from these protozoal diseases.
지능형 무선 센서네트워크 구현을 위한 USN/RFID 모듈의 설계 및 제작에 관한 연구
강이구,정헌석,이준환,현득창,황성일,송봉섭,이상훈,김영진,오상익,주숭호,이세창,Kang Ey Goo,Chung Hun-Suk,Lee Jun-Hwan,Hyun Deuk Chang,Hwang Sung-Il,Song Bong-Seob,Lee Sang-Hun,Kim Young-Jin,Oh Sang-Ik,Ju Seung-Ho,Lee Se-Chang 한국전기전자재료학회 2006 전기전자재료학회논문지 Vol.19 No.3
This paper was proposed Intelligent and wireless USN/RFID module system that can overcome disadvantage of existing RFID system with no sensing module and wire communication. The proposed USN/RFID system was designed and fabricated. After fabricating new system, we analyzed the characteristics of USN/RFID module. After design VCO block that is point circuit to develop next generation system one chip of RFID system, we were carried out simulation and verified the validity. this paper was showed that VCO system was enough usable in wireless network module. USN/RFID Reader module shows superior result that validity awareness distance corresponds to 30 M in the case of USN and to 5 M in RFID Reader's case and 900 MHz of commercial frequency does practical use enoughly in range of high frequency. The USN/RFID Reader module is considered to act big role to Ubiqitous industry offering computing surrounding of new concept that is intelligence type service and that was associated to real time location system(RTLS), environment improvement/supervision, national defense, traffic administration etc.