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안길호 ( Gil Ho Ahn ),배진규 ( Jin Gyu Bae ),정광 ( Kwang Jung ),왕영일 ( Young Il Wang ),정준용 ( Jun Yong Jung ),강순근 ( Soon Keun Kang ),권혁무 ( Hyuk Moo Kwon ) 한국동물위생학회 2013 韓國家畜衛生學會誌 Vol.36 No.1
Three serotypes (O+A+Asia1 type) of the foot-and-mouth disease (FMD) vaccine were injected into cloven-hoofed animals in Korea after the nationwide spread of FMD at the end of 2010. This study was conducted to investigate FMD antibody development after FMD vaccination, and to determine whether there was a significant correlation between the antibody titer of the sow and the antibody titer of the growing pigs. The antibody titer (percentage inhibition [PI] titer) of the sow (gilt) after FMD vaccination was maintained at a level higher than 50 (P<0.05) for 5 months. A higher PI titer for the 1-month-old growing pigs corresponded with greater inhibition of the PI titer of the vaccinated growing pigs (P<0.05). A negative correlation (P<0.05) between the PI titer of the 1-month-old growing pigs and the PI titer of 3-month-old growing pigs, 4-month-old growing pigs after FMD vaccination at 2 months, 3months was identified, with a coefficient of determination (R2) of 0.274. Thus the PI titer of the growing pigs was inhibited to a greater degree when vaccination was performed at 2 months of age than at 3 months. However, many other factors likely influence growing pigs` PI titer in addition to the PI titer of the sow and age at vaccination, given that the coefficient of determination was somewhat lower.
육계에서 깃털을 이용한 플루오르퀴놀론계 잔류 모니터링 가능성 조사
김재호 ( Jae-ho Kim ),김미희 ( Mi-hee Kim ),안길호 ( Gil-ho Ahn ) 한국동물위생학회(구 한국가축위생학회) 2020 韓國家畜衛生學會誌 Vol.43 No.3
This study was conducted to analyze feasibility of monitoring of fluoroquinolnes residual through feather analysis in broilers. The calibration curve showed good linearity (r <sup>2</sup>≥0.99) within the concentration range of 1∼100 μg/kg. The limit of detection (LOD) and limit of quantification (LOQ) were validated at ≤0.66 and ≤1.99 μg/kg in broiler feather, respectively. The recoveries in feather samples ranged from 94.6 to 114.4% (5.1-15.8% RSD) at the 5 to 20 μg/kg spiking levels. The proposed new analytical method proved to be suitable and effective for fluoroquinolnes determination. We also monitored fluoroquinolones residue in 36 samples (broiler that were slaughtered in Gyonggi-do) using this method. Among tested feather samples, enrofloxacin and ciprofloxacin were detected in all samples. In muscle samples, enrofloxacin was detected in 20 (55.6%) samples and ciprofloxacin was not detected.
경기도 북부지역 야생멧돼지(Sus scrofa) 전염성 질병 감염 실태 조사
주동욱 ( Dong-uk Ju ),정광 ( Kwang Jung ),옥천석 ( Cheon-seok Ohk ),김성식 ( Sung-sik Kim ),안길호 ( Gil-ho Ahn ) 한국동물위생학회(구 한국가축위생학회) 2020 韓國家畜衛生學會誌 Vol.43 No.3
This study was conducted to investigate the infection of livestock diseases using 500 blood samples from wild boars captured in six cities and one county in northern Gyeonggi province, South Korea. We examined 239 cases of classical swine fever virus (CSFV), and each of 500 cases of foot and mouth disease virus (FMDV), porcine reproductive and respiratory syndrome virus (PRRSV), porcine circovirus type 2 (PCV2), Mycoplasma hyopneumoniae (MH), Actinobacillus pleuropneumoniae (APP), Pasteurella multocida type A (PMA), Hemophilus parasuis (HP), Salmonella (Sal.) spp. infections. Antibodies were detected against CSFV (23.4%), PRRSV (4.0%), PCV2 (60.4%), MH (3.0%), APP (69.2%), PMA (52.8%), HP (11.8%), and Sal. spp. infections (37.2%). No antibodies were detected against FMDV. As a result of antigenic analysis of 68 positive cases (13.6%) out of 500 PRRS antigen tests, 61 North American cases, 6 European cases, 1 North American-European complex case. PCV2 has 158 positive cases (31.6%) out of 500 antigen tests, and the results indicate that a considerable number of individuals are infected. To our knowledge, this is the first seroprevalence report of MH, APP, PMA, HP, and Sal. spp. infections in wild boars in South Korea.