• Title/Summary/Keyword: animal health

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Seroprevalence of Q-fever in Korean native cattle (국내 서식 한우에서 큐열 항체 양성율 조사)

  • Kim, Ji-Yeon;Sung, So-Ra;Pyun, Ji-In;Her, Moon;Kang, Sung-Il;Lee, Hyang-Keun;Jung, Suk Chan
    • Korean Journal of Veterinary Research
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    • v.54 no.3
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    • pp.147-150
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    • 2014

  • Q-fever is a vector-borne (Coxiella [C.] burnetii) zoonotic disease that is an increasing public health concern. To date, some research about Q-fever prevalence in dairy herds and human patients has been reported in Korea, but information about Korean native cattle is scarce. To measure the prevalence rates of C. burnetii in Korean native cattle, a total of 1,095 bovine serum samples collected during 2010~2013 were analyzed with an enzyme-linked immunosorbent assay. Sixty-eight heads of cattle were diagnosed as positive and while 19 heads were suspected (positive rate = 6.2%). Interestingly, Jeju province had a seropositivity rate six times greater than that of other provinces (18.9% vs. 3.2%). High seroprevalence might be caused by wide distribution of ticks in Jeju province compared to other regions. Based on these data, extensive monitoring of C. burnetii infection in cattle, tick distribution, and climate changes is required.

  • https://doi.org/10.14405/kjvr.2014.54.3.147 인용 PDF KSCI

Application of biodegradable metal based drug delivery carrier on Foot and Mouth Disease vaccination in pigs (돼지에서 생체 분해 금속성 전달체를 활용한 구제역 백신의 적용 연구)

  • Cho, Ara;Oh, Sang-Ik;Choe, Changyong;Jung, Young-Hun;Do, Yoon Jung;Kim, Suhee;Choo, Hyun Wook;Gu, Jong Su;Chung, Woo-Jin;Cho, Sung Youn;Yoo, Jae Gyu
    • Korean Journal of Veterinary Service
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    • v.43 no.3
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    • pp.129-137
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    • 2020

  • 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.

  • https://doi.org/10.7853/kjvs.2020.43.3.129 인용 PDF KSCI

A sampling and estimation method for monitoring poultry red mite (Dermanyssus gallinae) infestation on caged-layer poultry farms

  • Oh, Sang-Ik;Park, Ki-Tae;Jung, Younghun;Do, Yoon Jung;Choe, Changyong;Cho, Ara;Kim, Suhee;Yoo, Jae Gyu
    • Journal of Veterinary Science
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    • v.21 no.3
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    • pp.41.1-41.12
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    • 2020

  • Background: The poultry red mite, Dermanyssus gallinae, is a serious problem in the laying hen industry worldwide. Currently, the foremost control method for D. gallinae is the implementation of integrated pest management, the effective application of which necessitates a precise monitoring method. Objectives: The aim of the study was to propose an accurate monitoring method with a reliable protocol for caged-layer poultry farms, and to suggest an objective classification for assessing D. gallinae infestation on caged-layer poultry farms according to the number of mites collected using the developed monitoring method. Methods: We compared the numbers of mites collected from corrugated cardboard traps, regarding with length of sampling periods, sampling sites on cage, and sampling positions in farm buildings. The study also compared the mean numbers of mites collected by the developed method with the infestation levels using by the conventional monitoring methods in 37 caged-layer farm buildings. Results: The statistical validation provided the suitable monitoring method that the traps were installed for 2 days on feed boxes at 27 sampling points which included three vertical levels across nine equally divided zones of farms. Using this monitoring method, the D. gallinae infestation level can be assessed objectively on caged-layer poultry farms. Moreover, the method is more sensitive than the conventional method in detecting very small populations of mites. Conclusions: This method can be used to identify the initial stages of D. gallinae infestation in the caged-layer poultry farms, and therefore, will contribute to establishment of effective control strategies for this mite.

  • https://doi.org/10.4142/jvs.2020.21.e41 인용 PDF