李在根博士의 功績을 稱頌함

李基萬 한국동물생명공학회(구 한국동물번식학회) 1979 Reproductive & developmental biology Vol.3 No.2

濟州馬의 毛色의 在來名稱 및 分布에 관한 硏究

李基萬 건국대학교 1971 學術誌 Vol.12 No.1

In order to define traditional term for coat color in the Cheju Horse and to determine the grades of coloring(by kind) as well as frequency of coat color, this study was conducted in three replications i.e., during January 1960, December 1968 and July 1969, at Cheju-do and other major cities. The investigation consisted of : (1) hearing the testimony of breeders, dealers and connaisseurs of the horses about traditional terms for coat color, their significance and grades of coat coloring (by kind) ; (2) actual joint confirmation of coat color on the horse; (3) determination of frequency of coat color by kind on 2,430 Cheju Horses and the following results were obtained. 1.Number of terms for coat color found is as numerous as in any other country which is indicative of a long history of our horse breeding. 2.The definition of terms for coat color by kind was, from the view point of hippology, well classified. 3.Traditional terms for coat color corresponding to Black, Bay, Chestnut, Fallow, Sorrel, Cremello, Gray, Roan, Spotting (Pinto), Piebald and Tiger spotting are Gara, Yuma, Zuekda, Gora, Gonggolmal, Baegma, Chongma, Buru, Zaheul, Wolla and Buemma in the same order. III-defined dilutes~intensities is called Guehul. 4.Each coat color is sub-divided and the total terms amount more than 40. 5.In grading the coat coloring, first is called 'Mueggara'; second, 'Chuengburu'; third, 'Gochizuegda'; forth, Garawolla; fifth, 'Jinzalyu' and those grades lower than sixth very widely according toindividual testifiers except those grades called 'Baeggora, 'Chuengburu', 'Baegzaheul' and 'Baegma'. There fore, according to the Cheju dialects, When they Grade the coloring "GAra" as first (IL-Gara), "Chongchong" as second (Ie-Chong chong), "Zerkda" as third (Sam-zerkda)' They do not melon that all "gara" (black) are classified to first grade but that only "mueggara" (deep black) is. 6.Even though the traditional grades of coat color orally passed down is still existing, they are not practiced in today's horse breeding. 7.Determination of frequency of coat color by kind shows that Black accounts 7.31% ; Gray, 13.04% ; Chestnut, 30.56% , Piebald, 0.33% ; Bay, 42.76% ; Fallow, 2.20% ; Roan, 2.21% ; Spotting, 0.89% and Dilutes, 0.37% . Chestnut was most numerous whereas neither Sorrel nor Tiger spotting was found.

렌드레이스種 돼지의 生時 및 離乳時 産仔數와 體重에 미치는 要因에 關한 硏究

李基萬 건국대학교 1981 學術誌 Vol.25 No.1

The present study was carried out to study of litter productivity in landrace pigs farrowed in 255 sows from 1975 to 1978. The results obtained are as follows. 1.Average number born alive per litter was 7.31. The effects of year and season were not significant, but the effect of parity was statistically significant. The pigs in the 3rd-6th parities had larger litter size at brith than those in other parities. 2.Average birth weight of pig was 1.25kg. The effects of year, season and parity were not significant. 3.Litter size at weaning was 7.79. The effects of year, season and parity were not significant. The pigs in the 4th-5th parities had larger litter size at weaning than those in other parities. 4.The average weaning weight of pig at 4 weeks was 7.46kg. The effects of year and parity were not significant, but the effects of season was significant. The pigs farrowed in the summer and fall were heavier than those farrowed in the spring and winter.

大家畜의 受精卵 移植에 關한 硏究

李基萬,鄭吉生,高光斗 건국대학교 1982 學術誌 Vol.26 No.2

This study was carried out in order to induce multiple birth following egg transfer in Korean native cattle, and composed of three experiments ; induction of multiple birth following GTH single administration, Ovarian response to the administration of GTH in combination with Prostaglandin F2α and non-surgical egg transfer following superovulation and non-surgical recovery of fertilized eggs. The results obtained in three experiments were summarized as followings: Experiment I. Induction of multiple birth following GTH single administration. (1) Average duration from PMS administration to the onset of estrus was 3.8 to 4.7 days and no difference due to dosage and administration site of PMS were observed. (2) Duration of induced estrus was ranged from 3.1 to 4.6 days and that of induced estrous cycle was shortened by the length of induced estrus. (3) The most slowed follicles (5.3- 5.5) were observed in the cattle administrated with 2,000 IU of PMS and 1,000 IU of PMS was considered to be the optimum dosage for the limited ovulation. (4) Ovulation rate was declined when the PMS dosage was increased more than, 1000 IU (5) Highest rate of twin birth (35.7%) was obtained from the cattle treated with 1,000 IU of PMS and the next was the catties treated with 500 IU and 2,000 IU of PMS, respectively. Experiment II. Ovarian response to the administration of GTH in combination with Prostaglandin F2α. (1) Average duration from PMS administration to the onset of estrus was 5 days and the duration was shortened with the increasing dosage of PMS. (2) Duration of induced estrus was ranged from 2.3 to 4.5 days and the duration of estrus was shortened with the decreasing dosage of PMS. (3) Number of follicle obtained from the cattle treated with 4,000, 3,000, 2,000, 1,000 and 500 IU of PMS were clarified to be 11.4, 11.5,7,2.3 and 2.5, respectively, after 4.8-5.2 days of PMS administration. (4) Observing the results of slaughter, ovulation rates of the cattle treated with 4,000, 3,000, 2,000, 1,000, and 500 Iu of FMS were 16.3, 35.6, 60.0, 65 and 75%, respectively. (5) The numbers of degenerated, or bled follicle were increased with the increase of PMS dosage. Experiment III. Non-surgical egg transfer following superovulation and non-surgical egg transfer. (1) Average six eggs per donor were ovulated and 65% of them were recovered by non-surgical technique. (2) Eighty two percent of eggs recovered were found to be normal morphologically and were at 4-32 cell stage, respectively. (3) Seventy five percent of cattle treated with prostaglandin F2α were synchronized in their estrus within 4 days of administration. (4) No twin fetation was obtained from the five recipients received fertilized eggs.

韓牛 改良을 위한 屠體重 推定에 관한 硏究

李基萬,李黃田,鄭吉生 건국대학교 1977 學術誌 Vol.21 No.2

A total of 1627 Korean cattle were studied to measure live weight, withers height, body length, chest girth, belly girth, carcass weight and to calculate correlation coefficients among traits studied as well as to make linear regression equation. Among traits studied, the highest correlation coefficient was the correlation of chest girth with carcass weight. At interval of 10cm of chest girth, every regression equation was calculated, and according to this equation estimated carcass weights were tabled. 1.All average values of traits studied over 3 year cattle, the male values were higher than the female one. The larger variation of belly girth in female will be due to the cause of pregnant cows. 2.The correlation of chest girth with carcass weight was the highest of all traits studied, except for the trait of live weight. The correlation coefficients of chest girth with carcass weights were r = 0.693, r = 0.806 in both sexes, respectively. 3.The linear regression equations of live weight, withers height, body length, chest girth, belly girth on carcass weight were calculated. 4.Instead of complicated formulae, the simple regression equations of chest girth on carcass weight were calculated at intervals of 10cm chest girth and estimated carcass weight was tabled.

烏骨鷄의 遺傳形質에 關한 硏究

李基萬,鄭吉生,韓相基 건국대학교 1981 學術誌 Vol.25 No.1

This study was conducted to research on hereditary characters of Korean native Ogolgyes, which mean black bone chickens, with 1080 adults and young chicks, body weight, body colors, colors of feathers, farms of body parts, blood types and reproducibility were investigated. The results obtained were summarized as follows; 1.Native Ogolgyes, as contour featherings, were a different kind of breed from western silkies, that is to say, silky feathering chickens. 2.Native ogologyes were not uniform in colors of feather, body colors, and forms of body parts and various characters were existed confusedly. 3.As for the domestic distribution of Ogolgyes, total 6.513 chickens were distributed in seven provinces, and of which the number of native Ogologyes was 3,728, western Ogolgyes 1,136, and these hybrids 1,649. 4.Native Ogolgyes body sizes were large and weighed 2.62 ± 0.24 kg in cocks, and 2.25 ± 0.30kg in hens. 5.Native Ogolgyes, haying eye color with black, expressed Ogolgyes' characteristics well, but parts of them (1.4%) had brown-black eye color. 6.Skin color was grayish blue, Comb, wattle, ear lobe, and face were nearly the same color, grayish black or mulberry approaching black. Shank and toe color was black or light black. Beak and toe-nail color was black, but these points were light horny yellow. But these varieties of colors were numerous. 7.The feather colors of Native Ogologyes were observed to be most diverse ; black color was dominating (95.2%), white was next (3.0%), and black confused with white were reserved to existed(1.9%). Young chick feathers were yellowish gray color or yellowish white color. 8.The percentage of crest was 24.6%, and crests were small sizes, crest of birds with beard was 14.6%, crest with only wattle beards was 3.2%, crest with muffs was 1.6% and nonbearded chickens were 80.6%. 9.In combs, the distribution of single comb was 89.9%, mulberry comb was 10.1%. Cock's single comb was erected and hen's was that the erect was 70% and the lopped was 30%. Shape and size of these combs were not uniform largely. Wattles were various type in size. 10.All the Ogologyes had four toes. 11.Color of tongue was gray. The peritoneum and pleura of body sides and out side membrane of gizzard were grayish black color. Muscle was a little gray, and periosteum was grayish blach, but when boiled, the color was changed to deep black. 12.The present study revealed 52 of Alb BB type and 1 of Alb BC type. The Alb AA homozygote phenotype has not been recognized in Korean Ogolgyes. The following gene frequencies were calculated; AlbA = 0.000 AlbB = 0.991 AlbC = 0.001. The distribution of Tf and Amy Phenotypes corresponds to the following gene frequencies: TfA = 0.000 TfB = 0.964 TfC = 0.036, AmyA = 0.937 AmyB = 0.045 AmyC = 0.018 Alleles TfB and AmyA had the highest frequencies in Ogolgyes, whereas TfA, AmyB and AmyC occur very rarely and the TfA was not recognized. 13.As for the reproducibility, the first egg laying age in month was six in average. The broodiness was steady. The numbers of laying eggs vearly were about 100. Fertility was 80.6 percent. Hatchability was 83.4 percent. Rearing rates were 30-50 percent. As for the eggs layed by hens, eggs weighed 49.18 ± 4.09 gram, 5.42 ± 0.26 cm in length, 3.90 ± 0.24 cm in width. Colors of egg shells were light brown largely, but showed great difference between thick and light respectively. According to these results, the Korean Native Ogolgyes were various in character and wanted in breeds' uniformity. Ogolgyes could be fixed four varieties of black feather's chickens, white feathers' by the color of feathers, of non-bearded and bearded chickens by the existence of beard. Of which, it is necessary to fix bearded black variety rapidly for commercial value.

金善煥博士의 功績을 稱頌함

李基萬 한국동물생명공학회(구 한국동물번식학회) 1981 Reproductive & developmental biology Vol.5 No.2

韓牛의 形質과 그 相關에 관한 硏究

李基萬 건국대학교 1970 學術誌 Vol.11 No.1

For the purpose of collecting the data for Han-uh breeding through determination of frequency and kinds of body demension and qualitative characters of Han-uh cattle such as coat color, spotting, horning and whirl, the present studies were conducted during the period of 7 months from Jully 1969 to Junuary 1970. In the investigation of perfection, 12 parts including withers height and body length were pleasured in 77 cattle, 65 cows and 41 fattening cattle regarded as best ones among Han-uh cattle as they were either breeders at Livestock Experiment Station or candidates for championship at National Han-uh Cattle Exhibition in 1969 and those Of Choong-Nam Province in 1964. For the determination of horning, 7,610 cattle were checked ; 7, 973 cattle for the frequency arid kinds of whirl,6,385 cattle for those of coat color and 8,340 cattle, for the distribution of kinds of spotting. The studies on these qualitative charaacters were conducted at major cattle markets of cities as well as Provinces including Cheju-do and resulted as follows 1.Boby measurement obtained at National Han-uh Exhibition is as follows ; ◁표 삽입▷ (원문을 참조하세요) 2.Body type of good Han-uh Cattle still retains the type of draft cattle and differs little from the previous standard body measurement of Han-uh Cattle. However, in terms withers height index, the candidates to National Cattle Exhibition were smaller than their forebearers for cattle and 1,8% in body length and 1.2% in hip width for cows. 3.When considered from the view point of meat type, the body type of good Han-uh Cattle is graded far lower than the breeding aim of Japanese Black Cattle, good example of meat type. Registered figures at National Han-uh Cattle Show are lower than those of breeding aim for Jepanese Black Cattle by 20.7% for chest girth, 10.8% for chest width, 9.7% for body length and 6.8% for thurl width. In the case of cows, the corresponding figures are 9,6%, 5.9%, 4.2%, and 3.8% in the same order. Therefore, it is urgent to Han-uh Cattle particularly on its improved chest girth, chest width, body length, thurl width. and hip width 4.Live weight of good Han-uh Cattle is highly correlated to chest girth, chest depth and thurl width; the highest being with chest girth. 5.Even though the provincial differences in the conformation of Han-uh Cattle are existing the conformation in breeding aim should be set on a nation-wide base as it is not genetically fixed and separated It is recommended that standard withers height with range should be set to 137.0∼138.0 ± 3.0cm for cattle and 126.0∼127.0士 3.0cm for cow and all previous local standards be discarded. 6.Registered figures for fattening cattle at National Han-uh Show were in average 129.0 ± 5.38 cm for withers height and 515.3 ± 35.84kg for live weight. However, due to the limited qualification in live weight between 400 and 500 kg, not only live weight thus but also withers height were decreased and the true fattening capacity of Han-uh Cattle could not be figured out. No limitation should be put on live weight of candidates in future. 7.As the correlation coeficiencies between live weight and chest girth, in the case of perfection correlation, are 0.65 for A1 lot, 0.92 for A2 lot and 0.86 for A3 lot, Han-uh Cattle with greater chest girth should selected be for breeding if to improve Han-uh Cattle as a meat type. 8.Foreward or upward directing horn and bar-type horn are predominant in Han-uh Cattle. For easier management upward horning cattle should be given priority in the selection. 9.In the case of whirl, 56.64% had it at centre; 13.95%, upper; 13.52%, lower; 9.63 %, no whirl and 3.91% in stream form, the others extremely seldom. 10.Coat colors in Han-uh Cattle could be classified into 6 major color namely; yellow, brown, black, white, piebald and brindle. Brown was predominant whereas white, exceptional and roan, nonexistant. Standard coat color for Han-uh Cattle should be set to brown and deep brown, the most frequent ones. Coat coloration was relatively uniform and simple in the cattle of main land but was highly variable in those of Cheju-do 11.Piebald in Han-uh Cattle could be classified into head white spot, body white spot, black spot and partial brindle. Frequency of spotting is relatively low in the mainland cattle but is extremely high in Cheju-do cattle.

濟州島馬 體型에 關한 生物統計學的 硏究

李基萬 忠南大學校 1962 論文集 Vol.2 No.-

This study was conducted to determined the conformation of the Cheju Horses in Quel-part, and another purpose of the experiment was to compare the conformation of the Cheju Horses with that of other breeds, during the period of December 1959 to December 1960. Methods and Materials Used 1. Horses employed in this study were Cheju Horses aged five or more which had been feeding in Cheju Island. They were 102 females and 69 males, selected after general examination of the appearance. Horses in a state of a bad form and type were excluded from this study. physical characters in each horse were measured by the author, with special attention to the error of measurement. 2. By sex distinction, the biostatistic constants of measurements and the index numbers of withers height, the variation curve and its fitted normal curve, correlation coefficients, coefficients of regression, regression equations, were obtained, and then the fitting degree of regessions equations for withers height to body length and thurl width were tested. The ratios of the difference (D.) between each mean both males and females to the probable error (P.E.), the ratios of means of meals to those of females, indexes of conformation, and a normal type were obtained. On the other hand, Pearson's coeffiicients of racial likeness, Morant's reduced coefficient of racial likeness, Poniatowski's type difference were obtained, and then those were applied to compare Cheju Horses with other breeds. Results Obtained 1. In the biostatistic constant both males and females, it was withers height that was the smallest of coefficients of variability, next hip height. Generally speaking, coefficients of variability of the characters indicating the heights of a body were small. The largest coefficient of variability was that of thigh length, next forepastern length, upperarm length, which are charaeters it is difficult to seize the measurement point. In the mean, each character was very small beginnig with which withers height of females is 113. 18 ㎝., for males 111. 68 ㎝. 2. In the biostatistic constant of index numbers of withers heigt, coefficients of variability and those of measurements generally showed the same tendency. On the other hand, both coefficients of variability in the measurement and in the index number of withers height of Cheju Horses were larger than those of other breeds. These facts show that the form of Cheju Horses are not comparatively unified. 3. When variation curves of each character were compared with the normal curve, as a whole, variation curves were proper, showed nothing particular to be rough. The skewness of forequarter length(+), thigh length(+), forearm length(+), hip height(-), hindshin length(+) and rump length(-) were significant. The kurtosis of foreshin length(+), hip height(+), rump length(+), shoulder length(+), upperarm length(+), thigh lengsh(+) and chest depth(+) were significant. 4. Correlations between withers height, body length, chest depth, chest width, thurl width, chest girth, forearm circum or foreshin circum representing the hight, length, depth, width or circum and the other characters, and between the charcters of one anothers were positive, with exception of a few characters such as between chest depth and upperarm length, thigh length of cubit; chest depth and coupling length, chest girth and loin length or forearm length. In most cases, the degrees of correlation between withers height or body length and the other parts were high. In order to obtain the increasing or decreasing ratio of the mating character according to the increasing and decreasing of one unit of a character, the coefficient of regression equation were obtained. 5. When means of measurements, index numbers of means of males to females, D/P.E. were compared males with females, it was proved that females were larger than males, but it is the result which is concerned in only the Cheju Horse fed at Cheju Island, not the result which is considered all native horses distribubuted in all over Korea to be population. 6. Though the conformation of Cheju Horses was made clear by the above-mentioned biostatistic constants, when Cheju Horses were inquired into index numbers of withers height, in order to investigate a horse's appearance, a kind of work applied, and the working performance, it was proved that Cheju Horses have the typical form of work horses because they were low in foresection, high in hindsection, low square, long middlesection, large chest girth and large foreshin circum. It was proved that Cheju Horses are narrow in the width of the body, long in the cubit, and have the destiuguised type much combined a type of light horses. 7. The nomal types were made of the horses included iin M±σ of withers height. Though the normal type of females is worth applying to breeding, it is unreasonable that the normal type of males was applied to the improving base, for many a superior sire transfered from Cheju Island to Korea proper. 8. In order to understand relations of racial likeness theoretically, calculating C.R.L., R.C.R.L., Td., between Cheju Horses and Mongolians, Arabians, Thoroughbreds or Anglo-Normans, Cheju Horses wer concluded to be relatively closer to the Mongolian than the other breeds in the conformation. Conclussions For the conformation of the Cheju Horses, the biostatistic constants were obtained and the Normal types wee made. Applying Pearson's coefficients of racial likeness, Morant's reduced coefficients of racial likeness and Poniatowski's type difference, Cheju Horses were compared with other breeds.

豚卵巢의 活動狀態에 關한 組織學的 硏究

李基萬 忠南大學校 1959 論文集 Vol.1 No.-

1. Granulosa cells which were composed of more than 7 layers are increasing its number according as the follicle grows. When the follicle matures, the interval of granulosa cells becoming sparse one another, the granulosa cell is separated from theca interna. and degenesated gradually. Most of them are discharged with follicula liquid at the ovulation. The rests of them, which are remained at the wall of the follicle, disappear gradually. 2. As the follicle grows, the cell of the theca interna, getting big too, increase its cytoplasm. Its nucleus seems to be put many points in itself. Nucleoli are one or two. 3. The big cell of the outermost theca interna at which the outer one or two layers of the theca interna are interrupted in several places is connected naturally at the beginning of the formation of the corpora lutea. In sows, a homogenous hyaline memberane could not be found on the outer layers of the theca interna. 4. We consider that in the sow the corpus luteum is made of the cell of the theca interna. 5. The corpus luteum at the beginning of the formation is filled with a clot of blood in its cavity. The young corpus luteum grows from the inner wall of the theca interna to the center. The corpus luteum froms the perfect lutein cell on the 7th day after the heat finished