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.

영양 , 사료 브로일러의 피틴태린 이용성에 관한 연구 1 . 인공급제 ( 燐供給劑 ) 종류및 유기태린 ( 有機態燐 ) 의 첨가수준이 브로일러의 성장과 영양소의 이용에 미치는 영향

이기웅,하종규,한인규,김명곤 ( K . U . Lee,J . K . Ha,I . K . Han,M . K . Kim ) 한국축산학회 1986 한국축산학회지 Vol.28 No.3

A total of 252 three days old broiler chicks were used in a feeding trial and a metabolic study. Birds were fed DCP, three levels of phytic acid and three levels of Ca-Mg-phytate to investigate the effects of phosphorus supplementation on the growing preformance of broiler chicks and nutrient utilization. The results obtained are summarized as follows; 1. Adding incremental levels of phytic acid to basal diet improved body weight gain and the improvement was greater in magnitude than adding DCP or Ca-Mg-phytate. 2. Feeding Ca-Mg-phytate improved body wt. gain and supplemental effect was similar to that of DCP. 3. No significant differences in mortality were noticed in all treatment groups. 4. Phosphorus levels and sources did not influence DM digestibility, but chicks fed phytic acid digested crude protein better than those fed other diets. 5. Apparent absorbability of Ca in Ca-Mg-phytate was higher than other sources, but when apparent amount of absorbed Ca was calculated, phytic acid was better than others. 6. Higher absorption of Ca and P generally resulted in improved growth performance of broiler chicks. It may be concluded from present results that supplementary phytic acid can improve the growth performance of chicks, and phytate may have some, although less, supplemental effect. Although the effects of DCP and Ca-Mg-Phytate supplementation were not significantly different, this may not necessarily indicate that phytate phosphorus was well utilized by chicks. The results should be interpreted in such a way that DCP used in the present study was poorly utilized. The exact reason is not apparent, but DCP used in present study might be anhydrous form, which is generally regarded as poor source of phosphorus.

한 · 중 영양사료 세미나 : 육성돈에서의 아미노산 이용효율이 아미노산 요구량 결정에 미치는 영향

이기웅(K . U . Lee),딘 보이드(R . D . Boyd) 한국영양사료학회 1995 95 학술발표회 및 한.중 세미나 Vol.- No.-

무기태린 공급제의 이용성에 관한 연구 2 . 사료용 제2인산 칼슘제의 첨가수준이 육계의 성장 , 영양소이용율 , 혈액 및 경골성분에 미치는 영향

한인규,하종규,이기웅,고종열,이돈우 ( In K . Han,J . K . Ha,K . U . Lee,J . Y . Ko,D . W . Lee ) 한국축산학회 1986 한국축산학회지 Vol.28 No.12

This study was carried out to assess effects of various levels of dietary phosphorus on the growth of broiler chicks, nutrient digestion and blood and bone parameters. Various levels of dietary phosphorus were added to experimental dits with dicalcium phosphate. Five treatments (LL; lower, L; low, O; optimum, H; high, HH; higher) having various dicalcium phosphate levels were involved in this trial. Feeding trials as well as metabolic trials and determination of bone and blood parameters were conducted. Of the various levels of phosphorus, a level (Optimum level in present trial) recommended. by NRC resulted in the best performance of chicks regardless of experimental period and modification of dietary ingredients. Parameters of bone, blood and digestibility and utilizability of nutrients were interrelated each other, but had little correlation with growth rate with a few exception.

무기태린 공급제의 이용성에 관한 연구 4 . MAP 의 첨가수준이 면양의 성장 , 영양소이용율 , 혈액성분에 미치는 영향

한인규(I . K . Han),하종규(J . K . Ha),고종열(J . Y . Ko),이기웅(K . U . Lee),이돈우(D . W . Lee) 한국축산학회 1987 한국축산학회지 Vol.29 No.1

Present study was conducted to compare effects of various levels of monoammonium phosphate (MAP) in promoting the growth of lambs, to determine nutrient digestion influenced by MAP levels, and to examine the effect of MAP levels on blood parameters. Various levels of dietary phosphorus were added to experimental diet with monoammonium phosphate. Four levels of MAP used in lamb trial were 0%, 0.4%, 0.8% and 1.2%. Feeding trial as well as metabolic trial and determination of blood parameters were conducted. Results obtained are summarized as follows. 1. Of the four MAP levels used in lambs studies, 0.4% MAP resulted in the best body weight gain. 2. Total feed intake and feed efficiency in sheep fed 0.4% MAP appeared to be higher than those fed 0%, 0.8%o and 1.2%, but differences were not significant. 3. Values of blood Ca, P and urea were erratic and no consistent trends were observed. 4. Increasing MAP levels in sheep diets did not significantly influence nutrient digestibilities and nitrogen retention.

고강도 알루미늄 튜브의 온간 하이드로포밍 특성

이문용(M. Y. Lee),손성만(S. M. Sohn),류성지(S. J. Ryu),이기웅(K. W. Lee),이상용(S. Y. Lee) 한국소성가공학회 2002 한국소성가공학회 학술대회 논문집 Vol.2002 No.10

SRF 시험시설 내 극저온 설비용 제어시스템 구축 및 시운전

윤성운(S. Yoon),신재희(J. H. Shin),이기웅(K. Lee),이상일(S. Lee),양근수(K. S. Yang),최철진(C. J. Choi),장현만(H. M. Jang),안원(W. Ahn) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12

The SRF(Superconducting Radio Frequency) test facility was constructed in Daejeon and a cryogenic system, which includes a helium liquefier, a distribution box, transfer lines, and a 2K-system, was also set up for the cryogenic temperature. To control the cryogenic system, an Allen-Bradley PLC and a Siemens PLC were used. The Siemens PLC for the helium liquefier was delivered by its maker and tested by them. The AB PLC hardware, draft automatic control logics, and interlocks for others, such as the distribution box, the transfer lines and the 2K-system, were designed by us. A Korean vendor made the hardware, programmed logics, and some GUIs. We and the vendor, together, have had some commissioning for the cryogenic control system. Some hardware which had problems were changed and some programs which had bugs were modified.

주석 함유 폐자원의 공정부산물 전처리 기술

진연호,장대환,정항철,이기웅,Jin, Y.H.,Jang, D.H.,Jung, H.C.,Lee, K.W. 한국분말야금학회 2014 한국분말재료학회지 (KPMI) Vol.21 No.2

Fundamental experiences have been studied for development of pre-treatment process of Sn by-products such as solders. Dry and wet separation/recovery processes were considered by the differences of physical properties. The by-products, which are analyzed by solder metal and oxides. The metal and oxide were simply separated by dry ball-milling process for 12 hours, after that recovery metal powder might be reusable as lead or lead-free solders. In terms of wet separation process, samples were dissolved in $HNO_3+H_2O_2$ and the precipitation were analyzed by $SnO_2$. Overall efficiency of recovery might be increasing via developing simple pre-treatment process.

14 일령 이유자돈을 위한 적정 LACTOSE : SUCROSE 비율 SUCROSE RATIO FOR THE PIGS WEANED AT 14 DAYS OF AGE

한인규,김진동,조원탁,한영근,이찬호,이기웅,박향숙 한국영양사료학회 1999 韓國營養飼料學會誌 Vol.23 No.6

본 실험은 lactose에 대한 sucrose 대체가 14일령 조기 이유자돈의 성장에 미치는 영향을 알아보기 위하여 수행하였다. lactose와 sucrose의 적정비율을 결정하기 위해 평균체중 5.02±0.18 ㎏인 14일령 이유자돈 80두를 4처리 4반복, 반복당 5두씩 완전임의로 배치 하였으며, 처리구별 lactose와 sucrose의 비율은 각각 100:0(처리구 A), 75:25 (처리구 B), 50:50 (처리구 C), 25:75 (처리구 D) 및 0:100 (처리구 E)이었다. 이유초기 7일동안 뿐 아니라 시험 전 기간에 걸친 자돈의 일당중체량 및 일당사료섭취량은 처리 평균간 통계적인 유의차를 나타내지 않았으며, 다만 시험 전기간에 걸친 사료요구율에 있어서만 유의차가 인정되었으며, B와 D 처리구가 특히 우수한 것으로 나타났다 (p<0.05). 이유 1주동안 (Phase I)의 영양소 소화율은 DM과 CP를 제외하고는 처리 평균간 유의차가 인정되지 않았으며, A 처리구의 CP소화율은 다른 처리구에 비해 유의적으로 높았다 (P<0.05).그러나 B, C, D 그리고 E 처리구간에는 유의적인 차이가 보이지 않았다. 이유 14∼21일령 (Phase II)의 영양소 소화율은 처리평균간 유의차가 인정되지 않았으며, 이유 3주간에 걸친 건물, 질소 및 인의 배출량 역시 처리 평균간 유의차를 나타내지 않았다. 본 실험결과에서 나타난 바와 같이 14일령 이유자돈에 대한 탄수화물 공급원으로서의 lactose에 대한 sucrose의 대체는 자돈의 생산성 감소 및 영양소의 배출량 증가와 같은 불리함이 없이 이루어질 수 있음을 의미한다. This experiment was conducted to determine the optimum ratio of lactose to sucrose for nursery pigs weaned at 14 days of age. A total of 80 weaned pigs (BW 5.02±0.18 ㎏) were allotted into one of five treatments using a completely randomized block design. Treatments were 100:0 (A), 75:25 (B), 50:50 (C), 25:75 (D) and 0 :100 (E) in lactose : sucrose ratio. For the first week after weaning, no significant differences were found in average daily gain (ADG), average daily feed intake (ADFI) and feed conversion ratio (FCR, feed/gain). There were also no significant differences in ADG, ADFI and FCR among treatments during the second and third week after weaning. During overall experimental period, FCR was significantly influenced by dietary treatment, especially B and D treatments showed better FCR than other treatments (p<0.05). During the initial 7 day postweaning (Phase I), the nutrient digestibility was not influenced by the lactose: sucrose ratio except for dry matter (DM) and crude protein (CP). CP digestibility of diet A was significantly higher than those of other diets (p<0.05), but no significant.differences were found among diets B, C, D and E. During the second and third week postweaning (phase II), no significant differences were found in digestibilities of GE, DM, CA and P among treatments. There were no significant differences in nutrients excretion among treatments. These results indicate that sucrose can be well utilized by baby pigs as the source of carbohydrate after 15 days of age. It implies that lactose added in weaner diets could be partially replaced with sucrose.

생약제제의 첨가가 브로일러의 성장에 미치는 영향

한인규,류연선,박재환,이진희,이기웅,여태현 한국축산학회 1984 한국축산학회지 Vol.26 No.8

It has been indicated by several researchers that prolonged use of antibiotics for livestock feed caused several problems such as accumulation of antibiotics in animal body, outbreak of antibiotics-resistant microbes, etc. It would be very meaningful to find out new growth stimulating agents which not only have the same growth promoting effect as antibiotics but also do not reveal the adverse effect of antibiotics mentioned above. In these aspects, the present study was conducted to examine the growth promoting effect of herba on broiler chicks. Three-day old 240 Hibro-Hisex strain male commercial broiler chicks were distributed to 5 treatments (hot water extracted herba solution A; Kwackhyangjungkisan, B; Sanghwatang, C; Aeyeop, antibiotics, and control), and 6 replicates were allowed to a treatment with 8 birds per replicate. The results of present experiment continued for 6 weeks are as follows. 1. Body weight gain of 6 treatments were in order of herbs A, herbs B, antibiotics, control and herbs C, but there were no significant differences among 6 treatments. Herbs A and B groups improved body weight gain 2.5% and 2.0% respectively as compared to control group. 2. Herbs groups A and B showed slightly higher feed consumption as compared to control group, but antibiotics and herbs C groups revealed lower results than that of control group. There were no significant differences among treatments. 3. Feed conversion rates were in order of antibiotics, herbs A, herbs B, herbs C and control, and any of 6 treatments showed no significant difference. It was indicatable that although antibiotics group showed relatively lower feed consumption than other groups, showed a little better results in feed conversion rate as compared to other treatment groups. 4. In mortality, there were no significant differences among treatments. According to the above results, it could be said that although herbs A and B did not show remarkable improvement in body weight gain, feed consumption and feed convection rate, they have growth stimulating effect in a little.