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Melamine Examination of meat, eggs and diary products sold in Incheon
라도경,홍성희,이정구,이성모 한국동물위생학회 2009 韓國家畜衛生學會誌 Vol.32 No.4
From Oct. 2008 to Oct. 2009, 619 livestock products sold in Incheon were examined for melamine contamination. HPLC was used to detect the melamine concentration of various products. C18 column (3.9× 150mm, 4μm) was applied with a phase composed of 10mM citric acid and 10mM sodium octane sulfonate : acetonitrile (90 : 10), pumped isocratically at 1.0ml/min. None of the products were detected with melamine at the level of LOD 0.03mg/kg and LOQ 0.08mg/kg, so no melamine contamination was ascertained in livestock products in Incheon area. However, the examination about melamine analogues should be done for evaluation of toxicity and safety in the future due to toxicity of melamine and cyanuric acid.
홍성희 ( Seong Hee Hong ),라도경 ( Do Kyung Ra ),윤가리 ( Ga Ri Yun ),정윤정 ( Yun Joung Joung ),남지현 ( Ji Hyeon Nam ),정은하 ( Eun Ha Cheong ),이정구 ( Jung Goo Lee ),이성모 ( Sung Mo Lee ) 한국동물위생학회 2012 韓國家畜衛生學會誌 Vol.35 No.2
This study was performed to investigate the freshness and nutritive components of eggs from Incheon area. The eggs of 64 brands collected from 7 hypermarkets and 6 brands collected from farms were examined to test the Haugh unit (HU), egg yolk index and specific gravity. HU and specific gravity were higher in farm eggs than in hypermarket eggs (P<0.05), and there was no difference in the egg yolk index. Among hypermarket eggs, HU and egg yolk index were higher in the graded eggs than in non-graded eggs (P<0.05), and specific gravity was not different between them. HU and egg yolk index of the eggs collected in March were higher than those in August (P<0.05). To monitor the bacterial contamination, total coliforms, total bacterial counts (TBC) and Salmonella enteritidis were examined. Salmonella enteritidis and total coliforms were not detected from all eggs. TBC of farm eggs were less than 101 CFU/mL in all samples and TBC of hypermarket eggs were less than 101 CFU/mL in 187 samples, 101∼102 CFU/mL in 3 samples and 103∼104 CFU/mL in 2 samples, respectively. Antimicrobial residues were not detected from all eggs tested. The vitamin E contents in the vitamin E enriched eggs from 6 brands hypermarket were 1.98∼22.96 mg/yolk100 g (14.04±8.81 mg/yolk100g), and those of 5 brands among them were higher than the average of ordinary eggs. In one brand egg, vitamin E content was lower than the average of ordinary eggs. The vitamin E contents of ordinary eggs were 1.75∼16.36 mg/yolk100 g (average 5.57±2.76 mg/yolk100 g) and there were no price differences between vitamin E enriched eggs and ordinary eggs. In the contents of vitamin E, docosahexaenoic acid (DHA) and cholesterol, there were no significant differences according to the price. These results suggests that egg production, distribution, and management system should be improved for supplying fresh eggs to consumers at reasonable prices.
인천지역 돼지 혈청형 A, C 로타바이러스 및 칼리시바이러스 감염증 실태조사
정철 ( Cheol Jeong ),라도경 ( Do Kyung Ra ),김경호 ( Kyoung Ho Kim ),한태호 ( Tea Ho Han ),이성모 ( Sung Mo Lee ) 한국가축위생학회 2011 韓國家畜衛生學會誌 Vol.34 No.2
The present study was aimed to investigate the prevalence of porcine group A rotavirus, group C rotavirus and calicivirus from the 46 pig farms located in Incheon area. Group A rotavirus was detected in 16 (5.3%) from 8 farms (17.4%), and group C rotavirus was determined in 17 samples (5.7%) from 6 farms (13.0%). Porcine calicivirus was also detected in fecal samples [11 samples (3.7%) from 2 farms (4.3%)]. Correlation analysis was carried out among porcine enteric viruses and clinical signs, herd size and temperature on the basis of these results. The occurrence of porcine group A rotavirus, group C rotavirus and calicivirus infections in Incheon area was not associated with season and temperature. Especially, group C rotavirus was also detected in the pigs without any clinical symptoms.
김곤섭,신선혜,김종수,라도경,Kim, Gon-sup,Shin, Sun-hye,Kim, Jong-su,Ra, Do-kyung 대한수의학회 2001 大韓獸醫學會誌 Vol.41 No.1
A simple and rapid analytical method for the determination of tylosin in chicken, pork and muscle was established by High-Performance Liquid Chromatography(HPLC). Chicken, pork and beef muscle(5 g) were fortified by adding the $0.2{\mu}g/ml$ of standard tylosin and the drug was extracted from meats with 70% acetonitrile(ACN) and followed by liquid-liquid partition for clean-up procedure. Then $20{\mu}l$ portion of ACN elution was directly analyzed by HPLC with spectra 100 variable wavelength detector, and unfortified blank control were treated similarly. The average recovery rate of tylosin added to chicken, pork and beef muscle were $83{\pm}2.3$, $96{\pm}3.3$ and $92{\pm}1.6$(%) at the level 0.2 ppm, respectively. No tylosin residues in marketing meats. These results suggested that HPLC methodology could be acceptable for the extraction, determination and screening of tylosin residues in edible meats.
정철 ( Cheol Jeong ),윤가리 ( Ga Ri Yun ),라도경 ( Do Kyung Ra ),김경미 ( Kyoung Mi Kim ),이정구 ( Jung Goo Lee ),김경호 ( Kyoung Ho Kim ),이성모 ( Sung Mo Lee ) 한국동물위생학회 2014 韓國家畜衛生學會誌 Vol.37 No.2
Thirteen diary cows were diagnosed as bovine tuberculosis (BTB) based on pathological findings and PCR method from 74 diary cows slaughtered in Incheon city. BTB was outbreaked 9 times in the farm from March 2010 to June 2013. The BTB confirmed cows were all negatives by intradermal test with PPD at 3 times. Recently, disagreement between BTB outbreak and intradermal test has been raised as a big problem. This phenomenon suggest that a new control programs are necessary at farm level as well as diagnostic level.
윤가리 ( Ga Ri Yun ),정은하 ( Eun Ha Jung ),라도경 ( Do Kyung Ra ),정철 ( Cheol Jeong ),이경민 ( Kyung Min Lee ),채현우 ( Hyun Woo Chae ),이정구 ( Jung Goo Lee ),이성모 ( Sung Mo Lee ) 한국동물위생학회 2014 韓國家畜衛生學會誌 Vol.37 No.4
Animals and disease frequency of the rescued dogs were investigated in Incheon Veterinary Medical Association Animal Shelter from January in 2012 to December in 2013. Three zoonoses (rabies, brucellosis, and dirofilariosis) and three infectious diseases (canine distemper, canine parvoviral enteritis, and canine influenza) were examined for stray dogs. Among 5,603 heads, 647 (11.5%) went back to their owner and 969 (17.3%) were adopted to new families. Prevalence of dirofilariosis, canine distemper and canine parvoviral enteritis were 2.2% (16/718), 6.0% (24/399) and 6.1% (24/396), respectively. Positive antibody rates against rabies, B. canis and canine influenza virus were 20.5% (41/200), 0.1% (1/718) and 2.0% (4/200), respectively. Protective antibody for canine distemper virus and canine parvovirus were shown in 47.0% (94/200). The data indicate that control measures including facility standards and disease control program are one of the important aspects of the shelter management because stray dogs are exposed to various infectious agents.
축산물 작업장에서 젖소 미경산 및 경산우 구별을 위한 비교 항목 평가
김경호 ( Kyoung Ho Kim ),이정구 ( Jung Goo Lee ),라도경 ( Do Kyung Ra ),김철완 ( Cheol Wan Kim ),변재원 ( Jae Won Byun ),이성모 ( Sung Mo Lee ) 한국가축위생학회 2007 韓國家畜衛生學會誌 Vol.30 No.1
In Korea, it is the one of controversial problems to distinguish heifer from cow in slaughtered Holstein cattle. This study was conducted to evaluate the several criterions which could be used to discriminate heifer from cow. Some criterions have shown significant differences between heifer and cow in ante and post-mortem inspections(p<0.01). Firstly, the numbers of milk teeth of heifer and cow were 6.12±1.92 (Mean±Standard deviation) and 0.03±0.39 respectively. The teat diameter(D) and length(L) of cow were 26.43±4.31㎜ and 47.76±6.89㎜ respectively. However, those of heifer were significantly smaller (D: 18.04±5.04㎜, L: 28.61±8.91㎜) than those of cow. The size of udder was 203.68±16.84㎜ in Holstein cow and 112.70±20.59㎜ in heifer. Secondly, the uterus size of cow was significantly bigger than that of heifer and caruncle in mucosa of uterus could be easy to be confirmed by necropsy inspection. It was also obvious that the folding and length of uterus body were significantly remarkable in cow. Lastly, the pelvic cavity was 196.33±10.01㎜ in heifer and 220.90±11.41㎜ in cow. The ossifying maturation of heifer was 2.64±0.82 and 6.71±1.81 in cow. As the results, this study can be helpful for meat inspectors to discriminate the non-delivery heifer from delivery cow in Holstein cattle.