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한우(韓牛)의 혈청(血淸) alkaline phosphatase 활성도(活性度)에 관(關)하여
용만중,남치주,정창국,Yong, Mahn J.,Nam, Tchi C.,Cheong, Chang K. 대한수의학회 1971 大韓獸醫學會誌 Vol.11 No.2
The serum alkaline phosphatase activity was determined with 64 Korean cattles in different sexe and age groups, using p-nitrophenylphosphate as the substrate. The results obtained were as follows: 1. The mean value of serum alkaline phosphatase activity in Korean cattle was $1.78{\pm}0.21$ Bessey-Lowry units/ml, and $1.71{\pm}0.21$ units/ml. in female and $1.86{\pm}0.21$ units/ml. in male, respectively. 2. The serum alkaline phosphatase activity decreased with age from 4 years group. 3. No statistical significance was recognized among the sexes, but difference among the age groups was found to be highly significant.
임신유우(姙娠乳牛)의 혈청중(血淸中) Vitamin E 농도(濃度)
용만중,Yong, Mahn Joong 대한수의학회 1974 大韓獸醫學會誌 Vol.14 No.2
Blood serum from 30 pregnant cows, 6 non-Pregnant cows (one month after delivery), 6 sterile cows (ovarian cyst), and 6 heifers (16 months old) were analyzed for total vitamin E concentration by the ferric chloride-bipyridyl reaction. The pregnant group was determined periodically throughout pregnancy. The results obtained were as follows: 1. The mean value of serum vitamin E level in pregnant group was $0.651{\pm}0.068(SE)mg/100ml$, in non-pregnant group $0.647{\pm}0.119(SE)mg/100ml$, in sterile group $0.488{\pm}0.053(SE)mg/100ml$, and in heifer group $0.083{\pm}0.016(SE)mg/100ml$. Samples below 0.19mg/100ml were net observed and most of the pregnants (83.3%) showed the values of 0.40 to 0.99mg/100ml during pregnancy 2. The difference of vitamin E level between pregnant group and non-pregnant group was net significant, but these trio groups showed a significantly higher value than that of sterile group. On the other hand, in heifer group was recognized significantly lower value compared with adult groups. 3. The change of serum vitamin E level in pregnant group revealed the tendency of decrease as gestation progresses and significantly dropped at the eighth month, thereafter, the value was rose slightly at the tenth month of gestation but no differences were observed. The coefficient of correlation between months and serum vitamin E levels during pregnancy was r=-0.956(p<0.01), and a regression equation was Y (serum vitamin E levels, mg/100ml)=1.034-0.063x(month).
돈(豚)콜레라 바이러스 감염조직(感染組織)의 유리(遊離)아미노산(酸)에 관(關)한 비교연구(比較硏究)
용만중,Yong, Mahn Joong 대한수의학회 1966 大韓獸醫學會誌 Vol.6 No.1
The free amino acid contents in several tissues of swine were analyzed qualitatively by means of two dimentional paper chromatography. The tissues used were liver, kidney and spleen that were obtained from normal, immunized and hog cholera infected swines. The results obtained are as follows: 1. Liver: 20 amino acids were detected in normal, 17 in immunized and 15 in infected swines. 2. Kidney: 16 amino acids were detected in normal, 13 in immunized and infected swines. 3. Spleen: 15 amino acids were detected in normal in immunized and 13 in infected swines. 4. Glutamic acid, leucine, serine and threonine were present in high concentration in all of the cases examined. 5. The free amino acids were appeard to be decreased in the infected tissues with hog cholera virus.
용만중(Mahn Joong Yong),최병현(Byung Hyun Choi),박재주(Jae Joo Park),이배함(Bae Ham Lee) 한국생약학회 1979 생약학회지 Vol.10 No.3
21 herbal drugs registered in K.P. III were tested for contamination of fungi and isolation of aflatoxin producible strains. Initially contaminated fungi were Aspergillus group (41.28%) and Penicillium (47.26%) and the other fungi were contaminated somewhat. The most frequent isolation of Aspergillus group was Cnidii Rhizoma and that of Penicillium was Piperis Fructus nigri. Cnidii Rhizoma was the most contaminated drug and Cassiae Cortex was the least among them. Aspergillus flavus was isolated from 10 samples and Aspergillus parasiticus was detected in Glycyrrhizae Radix, Phellodendri Cortex. Aspergillus ochraceus was isolated from only Scutelariae Radix, and Fusarium nivale was isolated from Cnidii Rhizoma and Torreya Semen. None of Aspergillus and Penicillium was detected in only Coptidis Rhizoma. No strains of Aspergillus flavus and Aspergillus parasiticus isolated from were produced aflatoxin.
용만중(Mahn-Joong Yong),최병현(Byung-Hyun Choi),박재주(Chae-Joo Park),이배함(Bae-Ham Lee) 한국생약학회 1980 생약학회지 Vol.11 No.1
생약제는 천연물로서 생산과정, 저장 조건 등에 의하여 진균의 오염이 가능하며 품질관리 및 국민보건상 문제가 될 수 있다. 이에 따라 본연자들은 대한 약전수재 생약 21종을 취하여 진균의 분류 및 aflatoxin 생성유무를 검색할 목적으로 연구하였으며 현미경상에 목측하여 Raper and Fennell, 小田, 坂口의 방법에 의해 동정하였으며 Showell 방법에 준하여 aflatoxin analysis를 한 바 다음과 같은 결론을 얻었다. 1) 본 실험에서 광범위하게 분리된 진균은 Aspergillus group과 Penicillium이었으며 전체의 88.5%를 차지하였다. 또한 Mucor, Rhizopus, Alternaria sp., Fusalium sp. 등이 약간 분리되었다. 2) Aspergillus group이 가장 많이 분리된 생약은 후수였으며 Penicillium이 가장 많이 분리된 생약은 천궁이었다. 3) Aspergillus group과 Penicillium이 전혀 분리되지 않은 생약은 황련이었으며 겨자에서는 Aspergillus group이 계피, 길경, 건강에서는 Penicillium이 분리되지 않았다. 4) Aflatoxin 생성가능균주인 Aspergillus flavus는 10종의 생약에서 분리되었으며 Aspergillus parasiticus는 감초, 황백에서만 분리되었다. 5) Ochratoxin 생성가능균주인 Aspergillusochraceus는 황금에서만 분리되었으며 fusariogenin 생성가능균주인 fusarium nivale은 천궁과 비자에서만 분리되었다. 6) 공시 생약에서 분리한 Aspergillus flavus 22주, Aspergillus parasiticus 2주를 random sampling하여 aflatoxin분리 실험하였던 바 aflatoxin을 분리할 수가 없었다.
임신유우(姙娠乳牛) 혈청(血淸)의 총(總) Calcium 및 무기인(無機燐) 농도(濃度)에 관하여
조충호,용만중,Jo, Chung Ho,Yong, Mahn Joong 대한수의학회 1975 大韓獸醫學會誌 Vol.15 No.2
The experiment was carried out to determine the concentrations of total calcium and inorganic phosphorus of thirty rera obtained from pregnant Holitein cows, six sera from normal non-pregnant cows with one month after delivery, six sera from cows with ovarian cyst and six sera from heifer of sixteen months old. The changes of total calcium and inorganic phosphorus were observed on the 2nd, 4th, 6th, 8th, and l0th month of gestation. The results obtained in this work were summarized as follows: 1. The mean values of total serum calcium obtained from the pregnant group were $9.59{\pm}0.34mg/100ml$, from the non-pregnant group $10.23{\pm}0.47mg/100ml$, from the infertility grou $10.37{\pm}0.27mg/100ml$, and from the heifer group $10.07{\pm}0.20mg/ml$. The change of total serum calcium values in the pregnant group revealed the tendency of decrease as gestation progresses and the lowest value appeared on the sixth month. The mean value of total serum calcium in the pregnant group was lower than those of the other groups, but the differences were not statistically significant. 2. The mean values of serum inorganic phosphorus obtained from the pregnant group were $5.82{\pm}0.31mg/100ml$, from the non-pregnant group $5.92{\pm}0.44mg/100ml$, from the infertility group $5.80{\pm}0.49mg/100ml$, and from the heifer group $5.10{\pm}0.32mg/100ml$. The change during pregnancy showed a slight fall and the lowest value appeared on the sixth month. The differences of serum inorganic phosphorus values between the pregnant group and the other adult groups were not significant, but these adult groups showed a significantly higher value than that of heifer group (p<0.05).
유우(乳牛)의 번식능률(繁殖能率)에 관한 연구(硏究) 1. 분만후(分娩後) 수태시(受胎時)까지의 소요일수(所要日數)
조충호,용만중,이철우,Jo, Chung Ho,Yong, Mahn Joong,Lee, ChuI Woo 대한수의학회 1976 大韓獸醫學會誌 Vol.16 No.2
The survey was carried out to investigate the average number of days from parturition to conception to 349 calving cases out of Holstein cows in total 154 heads observed. The results were as follows: 1. The average number of days from parturition to conception was $97.41{\pm}8.22$ and it's similar during the period from primipara to 4th calving order, and irregular during on and after 5th. 2. The average number of days from parturition to conception in calving month was observed all through the year: the prolongation among on April and July, and the brief duration among on January and March. 3. In the cases under 50 and 150 days after delivery, the distribution showed 53.56% and 83.91%, respectively, and it's about 20% between 70 and 90 days after delivery.