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RISS 인기검색어
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- 저자 : 조헌조 ( M . D . Byun (검색결과 5 건)
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Estrogen 처리가 웅추의 발육과 장기중량에 미치는 영향
조헌조,변명대 ( H . J . Cho,M . D . Byun ) 한국축산학회 1977 한국축산학회지 Vol.19 No.1
To determin the practical level estrogen administration, 100 Demura lime cockerels of 5 weeks were used in this experiment and alloted. into 5 lots at complete random according to the level of estrogen injected. In order to study the effect of estrogen administrations on growth, dressing percentage and weight of organs in Demura male chicks, estrogen was administrated into breast muscle at the different levels of 5,000IU, 10,000IU, 15,000IU and 20,000IU for 35days. The results are summarized as follows: 1. Body weight at the end of experimental period in E₄ group was the most(10.78%) showing the significance with P$lt;0.01 and E₁ and E₂ group apparently lighter than control group statistical significance were P$lt;0.01 in body weight gain among the treatments used estrogen. 2. The weight of comb was significantly increased P$lt;0.01 in all treatments compared with the control. Testicle`s weights had no significant differences among treatments but in all treatments the weight of testicles compare with the control had decreased. 3. Liver weight showed significance with P$lt;0.01 among the groups. There was no significance among other groups except E₄ group. 4. There were no significant differences in the weight of heart and spleen. Weights of heart and spleen were slightly reduced by the hormone treatment. 5. In the weight of hypophsis, there was no difference in all tested groups. 6. Weight of gizzard showed the significance with P$lt;0.01 among the groups, and there was no significant differences among other groups except E₄ group. The weight of intestine was obviously increased P$lt;0.05 in all tested groups, and, its weight was increased in order of E₂ group, E₁ group, and E₄ group. 7. Dressing percentage showed the significance with P$lt;0.05 among the groups and were increased in order of E₂ group, E₃ group, E₁ group and E₄ group.
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조헌조 ( H J Cho ),변명대 ( M D Byun ) 한국축산학회 1973 한국축산학회지 Vol.15 No.2
The 1400 Korean cows raised in the Kyung-buk area were investigated for the purpose of considering the current status of breeding and the incidence of .reproductive disorders. An extensive research survey was carried out for two years from flay 1970 to April 1972. The results obtained in this study can be summarized as follows: 1. The incidence of breeding difficulties were found in 112 examinations (8.0%). 2. The five most common abnormalities as for their sterility were as follows; (a) anestrus (39.1%) ; (b) persistence corpus luteum (23.0%) ; (c) silent heat (17.6%); (d) endometritis (17.6%); (e) cystic ovaries (2.7%). 3. Endometritis was found in abundance by 45.0% upon 4 years of age, and cystic ovaries in 66.7% at 5 years of age. 4. The status of breeding, among Korean cows examined un this survey were; 59.0% of pregnancy, 19.0% of uncertain pregnancy, physiological vacancy 14.0% and the incidence of reproductive disorders 8.0%. 5. The conception rate on the first mating was 52.1%, on the second mating 24.4% and on the third mating 12.1%. 6. Classified by the history of delivery; 96.5% of 1400 heads had the history of 1-4 delivery.
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조헌조 ( Hean Jo Cho ),변명대 ( Myung Dae Byun ) 한국축산학회 1972 한국축산학회지 Vol.14 No.1
This experiment was an attempt to know whether surface water and ground water affect the growth rate of chicken. One hundred and twenty chicken were divided into two groups supplied with surface water and ground water, respectively, for 8 weeks. The results were summarized as follows: (1) The chicken supplied with ground water showed significantly higher growth rate than did another group. (2) The amounts of average daily consumption of water and feed were not significantly different from each other. (3) Neither the surface water nor the ground water affected the mortality rate.
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변명대,조헌조 ( M . D . Byun,H . J . Cho ) 한국축산학회 1974 한국축산학회지 Vol.16 No.3
The 1,042 Holstein cows raised in the Kyung-buk area were investigated for studying the incidence of anestrus and abnormalities associated with organic anestrus in dairy cattle. The research of extensive survey was carried out for two years from 1971 to 1972. The results obtained in this study can be summarized as follows: 1. In a study of 1,042 Cattle, 954 cases (40.9%) of preservice and postservice anestrus were recorded in 2328 reproductive cycles. 2. There were 107 cases of organic anestrus, representing 4.5% of total reproductive cycles and 11.1% of all recorded anestrus cases. 3. There were 847 cases of functional anestrus, accounting for 36.3% of total reproductive cycles and 88.7% of all recorded cases of anestrus. 4. There were 9.7% preservice and 26.6% postservice anestrus cases recorded in the category of functional anestrus. 5. Individual organic abnormalities causing or leading to anestrus were; (a) Luteal cysts (41.4%) ; Pyometra (28.9%) ; Follicular cysts (16.8%) ; Persistent corpus luteum (8.4%) ; White heifer disease (2.8%) ; Granulosa cell tumor (1.8%). 6. Pregnancy examination revealed that 21.3% were not pregnant. 7. In 1,042 cattle, total economic losses due to anestrus for a two year period were estimated at ￦3,690,000.
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Thiouracil , Thyroprotein 및 Diethylstilbestrol 의 병용처리가 웅추의 성장과 장기중량에 미치는 영향
배종하,조헌조,변명대 ( J . H . Bae . H . J . Cho,M . D . Byun ) 한국축산학회 1977 한국축산학회지 Vol.19 No.2
Eleven weeks old white leghorn male chicks with single comb were injected under the subcutaneous mear the neck with total 2㎖ of synthetic estrogen solution which contained 27㎎ of diethylstil bestrol (D.E.S.), and 3㎎ of euvestin, a derivative of D.E.S. in 1㎖ of aqueous suspension. In addition to the treatment with D.E.S., both thiouracil (0.01% in the ration) and thyroprotein (0.01% in the ration) were fed for 5 weeks, weight gains and the effect on each organs weight in these three group were compared with the control. The results are as follows 1. Statistical significance were P$lt;0.01 in body weight gains among the treatments. The hormone treatment caused growth stimulation about 20% in three injected groups but there were no significant differences between thiouracil group and thyroprotein group. 2. Weight of comb and testis was remarkably reduced (P$lt;0. Ol) by het treatment of hormone solution. Testis weight was showing no significance between neighbouring groups but comb weight showed significant differences between D.E.S. group and thyroprotein group. 3. Weight of liver showed significance with P$lt;0.01 among the each groups, and was showing no significance between the D.E.S. group and thyroprotein group. 4. The abdominal adipose leaf developed remarkably P$lt;0.01 between each group, it was the most ,striking in the D.E.S. group, followed by the thyrotein group, which was 6 times as much as the weight of the control. 5. The liver moisture content was reduced by injection of D.E.S. The liver fat content showed notable difference P$gt;0.01 among the groups and was increased in order, thiouracil, and thyroprotein group The liver fat content in the D.E.S. group was 2 times as much as the control In the muscle, fat content was Slightly increased in the D.E.S. group but no chance was shown in the other group.
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