단위동물에 있어서 칼슘 및 인의 영양에 관한 연구 3 . 사료내의 칼슘 , 인 및 소금 수준간의 상호작용이 브로일러의 골격과 혈액의 조성에 미치는 영향에 대한 연구

김성겸,한인규 ( S . K . Kim,I . K . Han ) 한국축산학회 1982 한국축산학회지 Vol.24 No.3

In order to study the effects of various levels of dietary Ca (0.45, 0.90, and 1.80%), ), P (0.40, 0.70, and 1.40%), and NaCl (0.25 and 1.05%) on the bone and blood compositions of the growing broilers chicks, 3 x 3 x 2 factorial experiments were conducted. Serum Ca, factorial experiments were conducted, Serum Ca, P and Na contents on the day 1, 3, 7, 14 and were examined. 1. Bone ash content was highly significantly affected by the 3 dietary factors (p $lt; 0.001), and was increased as the level of dietary factor increased. Ca x P, P x NaCl, and Ca x P x NaCl interactions on this parameter 28 were highly significant (p $lt; 0.001); that of Na x P was antagonism and that of Ca x NaCl was sparing action. 2. Dietary Ca and P levels showed positive correlationship with bone Ca content (p $lt; 0.005). This was modified by dietary NaCl levels (p $lt; 0.05); with higher NaCl, the highest Ca retention at medium Ca. Ca x NaCl and P x NaC) interactions on this parameter were fashions of sparing action (p $lt; 0.001). 3. Bone P contents was highly significantly (p $lt; 0.001) increased as the dietary NaCl and P levels increased, however, dietary Ca did not influence the bone P content (p $lt; 0.05). But Ca x NaCl interaction was slightly apparent (p $lt; 0.10), and P x NaCl showed significant (p $lt; 0.05) sparing correlationship. 4. Serum Na level was not affected by dietary Ca and P levels, but was slightly (p $lt; 0.10) reduced with higher dietary NaCl by the significant (p $lt;0.05)Ca x NaCl interaction. 5. Serum Ca concentration was not affected by dietary NaCl levels. However, it was increased (p $lt; 0.001) as the dietary Ca level increased or as the dietary P level decreased, 6. Serum P concentration was significantly (p $lt; 0.001) increased as the dietary P level increased or as the dietary Ca level decreased. On this parameter NaCl x Ca effect was of sparing action, although dietary NaCl effect was not significant. In conclusion, it might be suggested that the dietary NaCl levels affect the bone composition, although the effect in the serum is not significant.

단위동물에 있어서 칼슘 및 인의 영양에 관한 연구 2 . 브로일러의 성장에 미치는 칼슘 , 인 및 소금의 상호작용에 대한 연구

김성겸,한인규 ( S . K . Kim,I . K . Han ) 한국축산학회 1982 한국축산학회지 Vol.24 No.3

In order to examine the interactions of dietary calicium, phosphorus and salt levels, 972 chicks of meat-breed (Hibro-Hisex) were fed 18 kinds of diet formulated to contain the various level of dietary calcium (0.45, 0.90, 1.80%), phosphorus (0.40, 0.70, 1.40%) and salt (0.25, 1.05%) according to 3 x 3 x 2 factorial design. The results of the present study were summarized as follow. 1. Body weight gain was significantly affected by dietary calcium (p$lt;0.025) and phosphorus (p$lt;0.001) levels, but was not affected by dietary salt levels. Dietary calcium levels x phosphorus levels showed significant p$lt;0.05) antagonistic interaction on the body weight gain. Dietary calcium levels x salt levels interaction was not found to be significant, but showed the trend for antagonism. 2. Feed intake was significantly influenced by dietary calcium (p$lt;0.01) and phosphorus (p$lt;0.01) levels, however, was not altered by dietary salt levels. Dietary calcium levels x salt levels failed to show significant interaction on this parameter, but the trend was of sparing manner. Dietary salt levels x phosphorus levels showed significant (p$lt;0.05) antagonistic interaction in this parameter. 3. Feed efficiency was significantly affected by only dietary calcium levels (p$lt;0.001). Dietary salt levels x phosphorus levels and dietary salt levels x calcium levels showed the trends of sparing manner and antagonism, respectively, in this parameter although the relationships were not found to be significant. 4. Mortality was significantly affected by dietary calcium levels (p$lt;0.05) and phosphorus levels (p$lt;0.01), contrary to dietary salt levels. And the results produced by different calcium levels x phosphorus levels were slightly affected by dietary salt levels. From the results summarized as above, it could be inferred that dietary salt levels affected calcium and phosphorus nutrition, and that antagonism and sparing interaction were involved in the effects of dietary phosphorus levels x salt levels and dietary calcium levels x salt levels, respectively, on the performance of meat-type chicks.

거세 및 출하월령이 한우와 홀스타인 비육우의 도체구성과 부분육량에 미치는 영향

성삼경(S . K . Sung),정근기(K . K . Jung),최창본(C . B . Choi),김대곤(D . G . Kim),김성겸(S . G . Kim),김덕영(D . Y . Kim),최봉재(B . J . Choi) 한국축산학회 1996 한국축산학회지 Vol.38 No.3

The purpose of this study was to investigate the effects of breed, sex, and age on carcass composition and retail yield percentage of Hanwoo and Holstein steers and bulls reared under the same feed and feeding conditions. Lower percentages of bone and higher percentages of fat were observed in Hanwoo and steers compared with Holsteins and bulls, respectively. There were no differences in muscle percentage between breeds, whereas bulls showed higher muscle percentage than steers. The ratio of muscle to bone was higher in Hanwoo and bulls than in Holsteins and steers, respectively. The percentages of ribloin, brisket and flank, and rib with bone and fat were higher in Hanwoo, whereas the percentages of round, top round, and shank were higher in Holsteins. In Hanwoo, steers yielded more tenderloin, rib and shank than bulls. As age progressed, bone percentage decreased in Hanwoo, while no apparent changes were observed in Holsteins and fat percentage increased regardless of breeds. As age advanced, the percentages of ribloin and sirloin increased in Hanwoo steers, whereas those of sirloin and top round tended to decrease and brisket and flank increased in Holstein steers.

한우 및 홀스타인 거세우의 출하월령에 따른 도체의 이화학적 특성변화

김대곤(D . G . Kim),정근기(K . K . Jung),성삼경(S . K . Sung),최창본(C . B . Choi),김성겸(S . K . Kim),김덕영(D . Y . Kim),최봉재(B . J . Choi) 한국축산학회 1996 한국축산학회지 Vol.38 No.3

The current study was conducted to evaulate the effect of age on physico-chemical properties of carcasses obtained from Hanwoo and Holstien steers reared under the same feed and feeding conditions. Hanwoo and Holstien were sacrificed at 20, 22 and 24 months of age, and at 17, 18 and 19 months of age, respectively. In Hanwoo steers, moisture content of the carcass was decreased, while contents of crude fat; water holding capacity (WHC) and collagen increased as age increased. The degree of carcass hardness and chewiness decreased with age. In Holsteins, contents of moisture and crude fat were not influenced by age, whereas a and b values in meat color increased with age. Like the carcass of Hanwoo, the carcass of Holsteins showed in markedly decreased hardness and chewiness as age progressed. When considering the composition of fatty acids, the carcass of Hanwoo showed significantly increased oleic acid, linoleic acid and unsaturated fatty acids and decreased palmitic acid, stearic acid and saturated fatty acids as age increased. But in the carcasses of Holstein, palmitic acid, stearic acid and saturated fatty acids increased, and linolenic acid and unsaturated fatty acids decreased with age.

MgB₂ 마그넷의 영구전류모드 운전을 위한 무저항 접합 기술 개발

김영균(Y. G. Kim),송정빈(J. B. Song),최윤혁(Y. H. Choi),양동규(D. G. Yang),김성겸(S. G. Kim),정설희(S. H. Jeong),김지만(J. M. Kim),황덕영(D. Y. Hwang),이해근(H. G. Lee) 한국소성가공학회 2016 한국소성가공학회 학술대회 논문집 Vol.2016 No.10

거세가 한우 및 홀스타인 비육우의 도체등급에 미치는 영향

정근기(K . K . Jung),김대곤(D . G . Kim),성삼경(S . K . Sung),최창본(C . B . Choi),김성겸(S . G . Kim),김덕영(D . Y . Kim),최봉재(B . J . Choi),윤영탁(Y . T . Yun) 한국축산학회 1996 한국축산학회지 Vol.38 No.3

The study was conducted to investigate the effect of castration on the carcass grade of Hanwoo and Holsteins reared under the same feed and feeding condition. The carcass grading scores were measured by the Korean and Japanese carcass grading standards. The results were compared with respect to Hanwoo and Holstein by sex and Hanwoo and Holstein steers by age. In both grading systems, backfat and lougissimus dorsi of Hanwoo were thicker and larger than those of Holsteins. Steers of both breeds showed thicker backfat and smaller longissinaus dorsi area compared to bulls. Much better carcass yield grade was obtained from Hanwoo than from Holstein, and from bulls than from steers. Hanwoo steers showed significantly higher marbling degree than Hanwoo bulls. As Hanwoo steers aged, backfat thickness and longissimus dorsi area increased. Carcass quality grade of Hanwoo steers increased as age advanced but no apparent changes were found in Holstein steers. When Korean carcass grading standard was applied to judging carcass grade, the steep of Hanwoo resulted in better grade quality of carcasses but a lower quantity of carcass as age increased. Especially, Japanese carcass standard gave better grades with respect to carcass quantity a regardless of breeds and age compared with the Korean standard. In conclusion, the results presented indicate that castration and extended feeding periods (at least 17 months in Holstein and 24 months in Hanwoo) are essential to produce high quality beef, and modification of the current Korean carcass grading standard is necessary to fit carcass characteristics of Hanwoo steers.

육성돈에 대한 발효유 제조부산물과 생균제의 성장촉진 및 하이방지효과 ( 下痢防止效果 ) 에 관한 연구

한인규,채병조,김성겸 ( I . K . Han,B . J . Chae,S . K . Kim ) 한국축산학회 1983 한국축산학회지 Vol.25 No.2

An experiment was conducted to study the effects of feeding milk fermentation by-product (MFBP) and probiotics on the growing performance and prevention of diarrhea of the growing pigs. In this experiment 144 heads of three-way crossbred (Landrace x Large White x Duroc) growing pigs weighing approximately 11 ㎏ were employed into six treatment groups consisted of control. MFBP-A, MFBP-B, Streptococcus faecium, bacillus toyoi and antibioties (colitracin) for about 7 weeks of experimental period. The results from the present study were summarized as follows. 1. Average daily gain (P $lt; 0.01) and feed efficiency (P $lt; 0.05) of MFBP-A, MFBP-B, probiotics and antibiotics fed groups were significantly better than those of control group. However, it was found that there were no significant differences among the experimental groups, The amount of feed consumed per pig a day was not altered by the addition of MFBP, probiotics and antibiotics. 2. Incidence of diarrhea, although without significant difference, was slightly reduced by supplementing MFBP, probiotics and antibiotics in the young growing pigs. 3. Pigs fed MFBP and probiotics utilized the dietary protein and fat more efficiently, although statistical significance was not detected. In conclusion, it may be suggested firstly that probiotics and milk fermentation by-product can improve the growth rate and feed efficiency of pigs, and secondly that these effects are possible through (1) improvements in nutrient utilizability and nitrogen retention and (2) diarrhea prevention. Therefore, it could be inferred that the milk fermentation by-product can be used as a feed additive for growth promotion and diarrhea control in the young growing pigs as have been probiotics already marketed.

브로일러 초생추에 있어서 피틴태린이 칼슘과 인의 이용성에 미치는 영향

이기웅,한인규,하종규,김성겸,곽종형 ( K . U . Lee,In K . Han,J . K . Ha,S . K . Kim,C . H . Kwack ) 한국축산학회 1986 한국축산학회지 Vol.28 No.2

Present study was conducted to investigate the availabilities of the phytic acid phosphorus and tricalcium phosphate as dietary phosphorus sources in starting broiler chicks. The phytic acid phosphorus and tricalcium phosphate were of almost equal availabilities to the chicks for growth, although low body weight gain and feed intake were obtained from the chicks fed a diet containing 1.5% calcium and 0.4% supplemental phytic acid phosphorus, which might be caused by the wide Ca/P ratio. The two dietary phosphorus sources had almost equal availabilities for the bone formation. Bone ash and bone phosphorus, however, decreased when chicks were fed a diet containing 0.7% calcium and 0.4% phytic acid phosphorus. It might be attributed to the low level of dietary calcium. Mortality and feed efficiency were not affected by any of the two phosphorus sources.

사료내 구리및 유황의 공급원이 브로일러의 생산성에 미치는 효과

고영길,한인규,하종규,김성겸 ( Y . G . Ko,In K . Han,J . K . Han,S . K . Kim ) 한국축산학회 1985 한국축산학회지 Vol.27 No.10

As a preliminary study to clarify whether growth promotion effect of dietary copper sulfate is due to either copper canon, sulfate, or to the whole copper sulfate salt, 3 day old broiler chicks were fed the experimental diets containing graded levels of DL-methionine, copper sulfate, copper carbonate and sodium sulfate for 3 weeks. Chicks fed copper carbonate failed to show normal performance and showed significantly higher mortality. Although statistics did not show any significance, chicks fed higher levels of the three other materials showed slightly improved performances eventhough they were fed together with antibiotics. It could be inferred that dietary copper alone or copper without being combined to sulfate cannot stimulat chick`s growth at all.

아미노산 첨가수준에 따른 산란계용 사료의 단백질 절약효과

곽종형,강대진,고영두,하정기,한인규,김성겸 ( C . H . Kwack,D . J . Kang,Y . D . Ko,J . K . Ha,In K . Han,S . K . Kim ) 한국축산학회 1981 한국축산학회지 Vol.23 No.6

To investigate the protein sparing effect of DL-methionine and L-lysin on the laying hen ration, the present experiment with a total of 288 hens (Hi-sex commercial hens) was carried out for a period of 14 weeks (23-36 weeks). In this experiment 8 treatments ((1) control, CP 16%; (2) basal, CP 14% (3)basal +L-lysine 0.1% ; (4) basal+L-lysine 0.2% ; (5) basal+DL-methionine 0.1 % ; (6) basal+DL-methionine 0.2%; (7) basal+L-lysine 0.1%+DL-methionine 0.1 %; and (8) basal+L-lysine 0.2%+DL-methionine 0.2%) were employed. Metabolism trial was conducted at the end of feeling trial. The results obtained are summarized as follows; 1. The highest egg production was obtained from the group of basal+L-lysine 0.2%+DL-methionine 0.2% and the lowest from the group of basil +L-lysine 0.2%. But no statistically significant difference was found among all the treatments. 2. The heaviest egg weight was obtained from the group of basal+L-lysine 0.2%+DL-methionine 0.2% and the lightest was obtained from basal+L-lysine 0. 1%. But no significant difference was found among all the treatments. 3 . In feed intake, significant (p$lt;0.05) differences were found among treatment groups. Higher feed consumptions were generally resulted from the groups supplemented with L-lysine and/or DL-methionine. 4. Best, feed efficiency was obtained from control group, and the worst from the group of basal+L-lysine 0.1%+DL-methionine 0.1%. But no significant difference was found among all the treatments. 5. Nutrient utilization was not affected by supplementation with L-lysine and/or DL-methionine. 6. Feed cost per Kg egg mass production was in order of basal, basal +L-lysine 0.1%, basal+L-methionine 0.1%, basal+L-lysine 0.2%+DL-methionine 0.2%, control, basal+L-lysine 0.2%, basal+L-lysine 0.1%+DLmethionine 0.1%, and basal+DL-methionine 0.2%. Therefore, based on the results of this experiment, it is concluded that supplementation of L-Lysine and DL -Methionine at the level of 0.2% respectively with the basal ration(14% protein) would be able to spare 2% dietary protein.