http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Salmonella 방제에 대한 한방사료첨가제의 야외적용 효과
강호조,김용환,이후장,김종수,김도경,김은희,박미림,김곤섭,Kang, Ho-jo,Kim, Young-hwan,Lee, Hu-jang,Kim, Jong-shu,Kim, Toh-gyong,Kim, Eun-hee,Park, Mi-rim,Kim, Gon-sup 대한수의학회 2003 大韓獸醫學會誌 Vol.43 No.2
The present study was conducted to investigate the preventive effect of feed supplemented with 1.0% oriental herbal medicine feed additives (OHMFA) on the colonization of Salmonella spp. and incidence of death in broiler chickens. The frequency of Salmonella spp. in feces samples treated with OHMFA (25/239; 10.5%) was significantly reduced (p<0.05) than that of control group (83/347; 23.9%). A total of 108 Salmonella spp, belonging to four different serotypes, were isolated from three broiler farms. Among the serotypes isolated, Salmonella typhimurium was the moot prevalent (60.2%), followed by S. enteritidis (20.4%), S. gallinarum (13.0%) and S. pullorum (6.4%). In incidence of death in chickens during experiment, the mortality of rate OHMFA group (3.9%) was significantly lower (p<0.01) than that of control group (5.7%). These results show that the administration of OHMFA may prevent the colonization of Salmonella in chickens.
한방사료첨가제를 이용한 육계의 Salmonella 방제효과 - 항균성 및 장관정착 억제 -
강호조,김용환,이후장,김종수,김종섭,김도경,김은희,박미림,김곤섭,Kang, Ho-Jo,Kim, Young-Hwan,Lee, Hu-Jang,Kim, Jong-Su,Kim, Chong-Sup,Kim, Toh-Gyong,Kim, Eun-Hee,Park, Mi-Rim,Kim, Gon-Sup 대한수의학회 2003 大韓獸醫學會誌 Vol.43 No.1
In this study, antibacterial activity on the chicken feed supplemented with different concentrations of oriental herbal medicine feed additives (OHMFA) extract was tested for some organisms and their preventive effects on the colonization of Salmonella enteritidis (SE) in broiler chickens were examined. The growth of Bacillus cereus, listeria monocytogenes and Staphylococcus aureus was inhibited on the feed of 0.25% OHMFA and Salmonella spp. and Escherichia coli O157:H7 were inhibited on the feed containing 2.0% level. The broiler chickens fed a forage additived 1.0% level of OHMFA after inoculation of a $10^7CFU/ml$ of SE were increased in weight than the chicken fed forage without OHMFA. The incidence of SE in liver, spleen and cecum of the chickens fed forage with OHMFA was decreased on the 7th days of postinfection and SE was not isolated from the organs of the chickens after the 14th days of postinfection. Serum antibody titers of the chickens were lowered than the control group.
지표수 및 해수로부터 Listeria monocytogenes의 분리 및 생존성
양주,김도경,강호조,Yang, Ju,Kim, Toh-Gyong,Kang, Ho-Jo 대한수의학회 2002 大韓獸醫學會誌 Vol.42 No.3
The study was carried out to examine the distribution and survival rate of Listeria monocytogenes (L monocytogenes) from various source of waters using improved isolation method. In comparision of enrichment media for isolation of L monocytogenes from water, the isolation rate and 50% detection limit of the pathogen were higher in UVM modified Listeria enrichment broth (UVM) than Listeria enrichment broth (LEB). On the other hand, when compared the selective media for isolation of the pathogen from water, the isolation rate was highest in culture at Oxford agar followed by Fraser agar, and LEB agar. In order to improve enrichment method, 100 ml of water samples with 0.1 CFU/ml of L monocytogenes was inoculated into 10 ml of UVM concentrated at 10-fold, and incubated for 24 h at $36^{\circ}C$. Isolated frequency of the pathogens in improved enrichment method completely corresponded with common (filter) method. Of a total mumber of 147 water samples from river, lake and sea, the pathogen was isolated from 1 of 39 (2.6%) river water samples and 1 of 75 (1.3%) sea water samples, but no pathogen was isolated from 33 lake water samples. Serotypes of 2 isolates were identified as type 1. L monocytogenes decreased in number from 7.2-7.4 to 4.2-4.7 log CFU/ml for 1 week poststorage (5 and $20^{\circ}C$), but the pathogens were able to be detected in river and sea water until 8 weeks after storage. However, in tap water, L monocytogenes were decreased to undetectable level after 2 weeks of storage.
강호조,이후장,정태성,김도경,어용준,김재황 한국수의공중보건학회 2003 예방수의학회지 Vol.27 No.3
Feather waste, generated in large quantities as a byproduct of commercial poultry processing, is almost pure keratin, which is not easily degradable by common proteolytic enzymes. Several feather-degrading bacterial isolates were isolated from feather waste and soil. These isolates were able to degrade chicken feather, when grown on basal medium containing 1.0% native feather as a source of energy, carbon, and nitrogen. The isolates were characterized according to morphological characteristics and biochemical tests, and Vitek and API kit system. belonging to the Acinetobacter calcoaceticus complex, Bacillus thuringiensis, Bacillus circulans, Bacillus cereus. It was observed that aerobic growth by the isolate on single whole chicken feather, resulted in complete degradation of the keratin protein after 5-6 days of incubation at 37℃. The production of protein by the organism was decreased with cultivation time, with the maximum activity coinciding with the start of the stationary phase. The kerationolytic activity increased with cultivation time.