http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
암흰쥐에서 합성 Gonadotrophin releasing hormone 의 투여가 혈청 Luteinizing hormone 의 수준 및 자궁중량에 미치는 영향
정영채,김창근,김형태,정영호,양광식 ( Yung Chai Chung,Chang Keun Kim,Hyung Tae Kim,Yung Ho Chung,Kwang Sik Yang ) 한국축산학회 1982 한국축산학회지 Vol.24 No.2
The purpose of this experiment was to investigate the effects of synthetic gonadotropin releasing hormone (GnRH) administration on serum LH level and uterine weight in mature female rats. The rats were given a intraperitoneal injection of synthetic GnRH at 1:00 PM of proestrus, and were sacrificed immediately after administration, at 2:00, 3:00, 4:00, 5:00, 6:00, 7:00, 8:00 PM to investigate the changes of serum LH level and uterine weight. 1. In control group, the serum LH level increased from 4.35±0.84 mIU/㎖ at 1:00 PM to a preovulatory LH surge about 11.05±1.4 mIu/㎖ at 5:00 PM and then decreased gradually. The serum LH level in group treated with synthetic GnRH remarkably increased from 4.20±0.30 mIU/㎖ at 1:00 PM to a peak level, 13.17±0.17 mIU/㎖ at 2:00 PM, 1 hour after administration. The time required up to the preovulatory LH surge in treated group was shortened about 3 hours as compared to that of control group. 2. The weights of uterus in group treated with synthetic GnRH were slightly heavier than those of control group at 1, 2 and 3 hour after administration, but there were no significant differences between the control and treated group.
소의 다두분만에 관한 연구 2 . 우유의 Hormone 분석법에 의한 소의 조기임신진단에 관한 연구
정영채,김창근 ( Yung Chai Chung,Chang Keun Kim ) 한국축산학회 1980 한국축산학회지 Vol.22 No.1
This experiment was carried out to determine the progesterone and oestradiol level in milk during the estrous cycle of dairy cows by radioimmunoassay and to apply it to early pregnancy diagnosis and control of infertility. Whole milk samples were collected at afternoon milking from 61 cows in the Korea-Germany Dairy Farm, National Agricultural Cooperative Federation in An-Seong. Nine cows were sampled 5 times at intervals of 5days during a single estrous cycle to establish the pattern of progesterone and oestradiol levels and 52 cows were sampled twice on day of estrus and day 23 to 26 after artificial insemination to diagnose the pregnancy and infertility. 1. The progesterone levels in milk during a single estrous cycle were the highest on day 15 with a mean of 3.2±0.4 ng/㎖ and were the lowest on day 0 and next estrus. The levels of progesterone on day 5 and day 10 Here found especially to be variable among individuals. There were no significant differences in progesterone levels between the length of estrous cycle. The oestradiol levels in milk were raised at the estrus with a mean of 34.5 to 37.0pg/㎖ and the levels of oestradiol during the luteal phase (day 5 to day 15) were not variable at level of 17.5 to 19.2pg/㎖. 2. The progesterone level, 4.2±0.5ng/㎖, of pregnant cows on day 23 to 26 after insemination was significantly higher than 1.6±0.9ng/㎖ of non-pregnant cows on same days. These levels in milk were significantly higher in pregnant cows that showed the first estrus within 51 to 80 days after calving and conceived within 60 to 90 days after calving and although there were no significant differences, the levels progesterone in milk were also higher in pregnant cows that showed the conception at the 1st insemination and was within the 3rd calving.
소의 다두분만에 관한 연구 1 . 소의 조기임신진단 방법에 관한 연구
정영채,김창근 ( Yung Chai Chung,Chang Keun Kim ) 한국축산학회 1978 한국축산학회지 Vol.20 No.4
Objectives of this study were to (1) determine the progesterone and oestradiol levels in peripheral plasma daring the estrous cycle in dairy and Korean native cows by radio-immunoassay and (2) apply it to early diagnosis of pregnancy and to hormonal infertility control. Jugular venous blood plasma of 21 dairy and 8 Korean native cows were sampled 11 times each cow at intervals of 2∼4 days from day 11 proestrus to day 25 postestrus and stored at -20℃ until prepared for assay. 1. The levels of progesterone during the estrous cycle in non-pregnant cows began to decline rapidly 5 days before estrus, remained below 1.2ng/㎖ for 1∼2 days before and after estrus, and increased thereafter from day 5 after estrus to a peak of 5∼6ng/㎖ on day 11 to 15. The levels during the luteal phase(day 2 to 15) in dairy cows were 19% higher than those of Korean native cows. 2. The changes in progesterone level of the pregnant cows were similar patterns to those of non-pregnant cows up to 12 days after estrus, but high levels were maintained until day 25 of pregnancy without differences of levels in two breeds. The progesterone levels from day 17 to 25 of pregnancy were about 4∼5 times higher than those of non-pregnant. 3. In changes of oestradiol, non-pregnant cows showed a sharp peak of 12.3∼13.5pg/㎖ at 1∼3 days before estrus and a small ranges of 3.0∼4.5pg/㎖ during the luteal phase of the cycle. The oestradiol levels in pregnant cows approximated that during the luteal phase of non-pregnant, although a little higher than those of non-pregnant cows after day 14 of pregnancy. 4. The progesterone levels on day 24 to 25 of pregnancy averaged 5.93±2.01ng/㎖ ($gt; 5ng/㎖ in 72.7% of cows) in 11 pregnant cows and 1.23±1.21ng/㎖ ($lt;2.5ng/㎖ in 77.8% of cows) in 9 non-pregnant cows. Fused upon the levels 3.4 (non-pregnancy) and 3.9ng/㎖ (pregnancy) on day 24 to 25 after breeding, the average accuracy of forecasting pregnant and non-pregnant was 89.5%.
정영채,심상칠,이흥식,Chung, Yung Chai,Shim, Sang Chil,Lee, Heung Shik 대한수의학회 1966 大韓獸醫學會誌 Vol.6 No.1
In order to observe the effect of the injected radioactive iodine-$I^{131}$ on the uptake in thyroid of normal male guinea pigs and P.B.$I^{131}$ conversion ratio of $I^{131}$ in serum, 24 matured male guinea pigs were divided in 4 groups and $35{\mu}c$, $70{\mu}c$, $140{\mu}c$ and $280{\mu}c$ per kg of body weight respectively were injected subcutaneously. 1. The uptake rates of radioactveiodine-$I^{131}$ by external counts of thyroidal uptake reached the maximum level of uptake in 24 hours after injection. 2. As the injected amount increases, the uptake rates of maximum levels and release rate were increased. 3. Uptake rate in the removed thyroid have shown no statistical in the $35{\mu}c$ and $70{\mu}c$ groups of injected guinea pigs. 4. There was no statistical significance in $140{\mu}c$ and $280{\mu}c$ groups of injected guinea pigs. 5. P.B.$I^{131}$ conversion ratio of $I^{131}$ in serum was not in proportion to injected amounts: 61.0%(35), 70.2%(70), 75.3%(140) and 64.8%(280).
시내요식업소 식품 및 환경위생학적조사 -주로 대장균이 검출을 위하여-
정영채,CHUNG YUNG CHAI 대한수의사회 1963 대한수의사회지 Vol.7 No.1
During the period starting November 8th to 26th, 1960, 160 restaurunts located in Seoul area were inspected with special emphasis on the sanitary aspect of food and environment of each restaurant. The inspection was concerned with bacteriological test for