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한우의 조정기능발달에 관한 연구 1 . 한우와 교잡종의 전반기 고환발육과 조정기능
이용빈,김창근,신원집,박충생 ( Y . B . Lee,C . K . Kim,W . J . Shin,C . S . Park ) 한국축산학회 1973 한국축산학회지 Vol.15 No.2
In order to study on the development of the spermatogenic function and the sexual maturity between the Korean purebred and three-way crossbred ((Angus × Korean purebred) × Holstein), this experiment was conducted to investigate the testicular development and the spermatogenetic function by means of repeating biopsy at one month intervals from one to 9 months of age with 6 Korean purebreds and 3 three-way crossbreds. 1. In the testicular development, the scrotum circumference of the Korean purebred and three-way crossbred increased steadily with increasing age. The scrotum circumferences of the Korean purebred and three-way crossbred were 19.4 ㎝ and 28.9 ㎝ at 9 months of age, respectively, and doubled to one month of age. The testicular width and length increased rapidly from 6-7 months of age, but the differences between two groups were not statistically significant. 2. The seminiferous tubules in the testis of two groups, solid at 3 months of age, increased appearently in diameter at 5 to 6 months of age, but were not reached mature size. 3. Only gonocytes and indifferent supporting cells were present in the tubules at 3 months of age and spermatogonia appeared from 5 months of age, spermatocytes increased rapidly from 6 months of age and spermatid were seen for the first time in the 7 months old Korean purebred and three-way crossbred. On the basis of the above results it is concluded that sexual maturity of three-way cross bulls was somewhat earlier than the Korean bulls, but the difference of two groups was not significant.
김창근 ( C K Kim ),김상철 ( S C Kim ),이용빈 ( Y B Lee ),설동섭 ( D S Sul ),오연각 ( Y K Oh ),서국성 ( G S Suh ),김중계 ( J K Kim ) 한국축산학회 1972 한국축산학회지 Vol.14 No.2
The ovulation rate and follicle development were observed in 18 goats by laparotomy on the third day after injection of 500, 750 or 1,000 I.U. PMS. Fecundity was also observed in other 17 goats treated with 500, 750 or 1,000 I.U. PMS and mated naturally on the 17th day of the estrous cycle. The ovulation rate was 1.5 (1∼3), 2.5 (1∼4) and 3.2 (2∼5) in the goats receiving 500, 750 or 1,000 I.U. PMS, respectively, and it was found significantly (P$lt;0.05) mare in 1,000 I.U. PMS than in 500 I.U. PMS. However, there were no significant differences in the number of follicles with 5mm or larger diameter and hemorrhagic follicles between the groups. Fecundity was 2.0, 2.25 and 2.0 in the goats receiving 500, 750 and 1,000 I.U. PMS, respectively. The single, twin, triplet and quadruplet births were 23.5%, 52.7%, 17.7% and 5.9%, respectively. One still birth and 2 premature births were observed. The shorter gestation period of goats and the lighter birth weight of kids resulted from the higher fecundity.
Propylthiouracil 과 Diethylstilbestrol 이 성장웅추의 성선 및 제2차 성미에 미치는 영향
이용빈 ( Y B Lee ),오봉국 ( B K Ohh ),김재홍 ( C H Kim ) 한국축산학회 1969 한국축산학회지 Vol.11 No.4
This experiment was conducted to investigate the influence of Diethylstilbestrol and Propylthiouracil upon the gonad and secondary sex characters of growing cockerels. This trial was alloted four treatments; Control, Diethylstilbestrol, Diethylstilbestrol plus Propylthiouracil, Propylthiouracil. Each lot had 13 growing cockerels which were five weeks old. At the day of testing, three cockerels were randomly sampled from every lot on each week by third week. And at the fourth week, seven cockerels were sampled from each lot. The results obtained were as follow; 1. Testicles weights had no significant differences among treatments by third week. But in fourth week, all the treatments had decreased the weight of testicles compared to control. 2. At fourth week after treatment, diameters of seminiferous tubules of treated individuals were significantly decreased from control. (p$lt;0.01) 3. Comb and wattle areas were significantly decreased in all treatments compared to control.
가금의 인 및 칼슘 대사에 관한 연구 ; 제5보 : 초생추 각장기에 있어서 이중투여에 의한 P32 및 Ca45 분포에 관한 실험적 연구
이용빈 ( Yong Bin Lee ),정영채 ( Yang Chai Chung ),김영묵 ( Yong Mook Kim ),성재기 ( Jae Ki Sung ),권종국 ( Jong Kuk Kwun ) 한국축산학회 1967 한국축산학회지 Vol.9 No.1
The distribution of double labeled P^(32) and Ca^(45) in the various tissues were investigated in fourty chicken. The results obtained were as follows: 1) The highest differences were observed in the thyroid gland between the sex in 24 hrs. after double administration of P^(32) and Ca^(45). 2) Generally, the distribution of double administrated P^(32) and Ca^(45) were higher in 24 hours than in one hour. 3) The sequence of the distribution of P^(32) and Ca^(45) in Various tissue were, thyroid gland, femur, adrenal, genital organs, pituitary, kidney, liver, spleen, brain, and G-muscle.
이용빈 ( Y B Lee ),김재홍 ( C H Kim ),한방근 ( B G Hann ) 한국축산학회 1970 한국축산학회지 Vol.12 No.2
The primary objectives of this study were to observe (1) the variation of functional activity between the right and left ovaries in the dairy cows, and (2) the effect of age to the variation of functional activity and (3) environmental effects around the ovary uterine horn to the rate of fertilization. Data were obtained from 1218 mature follicles and 155 pregnant cows. The result obtained were as follows; 1. The right ovary was more active than the left. And the frequencies of follicle maturation in the right and left ovaries were 763(62.46%) and 455(37.36%) follicles respectively. The variation of this two frequency is significant at 1% level. 2. Under the 6 years the frequencies of follicle maturation in the right and left ovaries were not affected by the age. As compared over the 7 years with under the 6 years, the age did not significantly affect the variation of ovulation frequency between the right and left ovary. 3. The environments around the left ovary and uterine horn did not significantly affect the rate of fertilization and implantation of fertilized egg.
이용빈(Y . B . Lee),송계원(K . W . Song),강종천(G . C . Kang),김명진(M . G . Kim) 한국축산학회 1988 한국축산학회지 Vol.30 No.4
This experiment was carried out with growing-finishing swine to investigate the effects of Selenium on the growth rate, feed efficiency and carcass qualities. Fifty heads of weaned piglets were allotted to following three groups. 1. Twenty heads for selmix which was produced by Jung Ang Chemical (Pharmaceutical Co.). 2. Ten heads for natural selenite which was produced by Hyochang Mineral Research Center. 3. Twenty heads for control group. Selmix and Selenite were added to supply 0.3 ppm. of Selenium to basal ration which was formulated by Won-Kang Co. Ltd. This study had been lasted for 108 days from May 27, 87 to September 12. 87. and the results were obtained as follows a) The daily body gain: The best result was obtained in Sehnix group, ave, daily gain, 708.6 gr. (P$lt;0.05) compared to Selenite group, 674.7 gr. and control group, 663.6 gr. b) Feed efficiency: There were no significant differences in the feed consumed and feed conversion. c) Carcass qualities: There were no significant differences in the carcass qualities; backfat thickness, carcass length, carcass weight and melting point of leaf fat, except significant differences in the eye muscle area (P$lt;0.05) and backfat thickness (P$lt;0.05).
초생추 각장기에 있어서 이중투여에 의한 P32 및 Ca45 분포에 관한 실험적 연구
이용빈 ( Yong Bin Lee ),정영채 ( Yang Chai Chung ),김영묵 ( Yong Mook Kim ),성재기 ( Jae Ki Sung ),권종국 ( Jong Kuk Kwun ) 한국축산학회 1967 한국축산학회지 Vol.9 No.1
The distribution of double labeled P^(32) and Ca^(45) in the various tissues were investigated in fourty chicken. The results obtained were as follows: 1) The highest differences were observed in the thyroid gland between the sex in 24 hrs. after double administration of P^(32) and Ca^(45). 2) Generally, the distribution of double administrated P^(32) and Ca^(45) were higher in 24 hours than in one hour. 3) The sequence of the distribution of P^(32) and Ca^(45) in Various tissue were, thyroid gland, femur, adrenal, genital organs, pituitary, kidney, liver, spleen, brain, and G-muscle.