잣송이 부산물의 정유성분 추출 및 항균활성

김창혁,이선엽,박재인 강원대학교 동물생명과학연구소(구 강원대학교 동물자원공동연구소) 2008 동물자원연구 Vol.19 No.-

키토산 및 녹차 첨가가 산란계의 생산성, 소화율 및 혈액과 계란의 콜레스테롤 함량에 미치는 영향

김창혁,오덕환,채병조 한국가금학회 2001 韓國家禽學會誌 Vol.28 No.3

본 시험은 키토산 및 녹차의 급여가 산란계의 사양성적 및 혈액과 난황의 콜레스테롤 수준에 미치는 영향을 관찰하기 위하여 실시하였다. 시험은 옥수수-밀기울 위주 사료로 처리당 3반복 반복당 30수씩 60주령 갈색 산란계를 총 360수 공시하여 8주간에 걸쳐 키토산을 0.15%를 첨가(T1), 녹차잎을 0.15% 첨가 (T2) 및 키토산과 녹차잎을 각각 0.15% 첨가 (T3)하여 수행하였다. 사료섭취량은 대조구가 약 830g으로 가장 낮았고, 처리구에서는 T2구가 낮은 경향을 보였으나, 산란율은 대조구의 52.6%에 비하여 T1구가 55.7%로 높은 경향을 보였으며, T2(59.3%) 및 T3구 (58.4%)는 유의적 (P<0.05)으로 높았다. 난중은 대조구가 63.8g으로 T1구의 62.3g에 비하여 높은 경향이었으나, T2및 T3구의 65g에 비하여 낮은 경향을 나타냈다. 혈중 콜레스테롤 함량은 시험 개시 시에 비하여 8주후에 처리구 (T1, T2 및 T3)에서 114∼123mg/dl로 유의적으로 감소하였으며 (P<0.05), 처리간 혈중 콜레스테롤 함량은 T2가 다른 처리구에 비하여 낮은 경향을 보였다. 그러나 난황 콜레스테롤 농도에는 키토산과 녹차의 첨가가 영향을 미치지 못하였다. The objective of this study was to investigate the effect of chitosan and green tea supplementation on laying performance and cholesterol concentrations of serum and egg yolk in laying hens. Total 360 laying hens were divided into four groups for feeding trials with three replication : control, T1 (0.15% chitosan), T2(0.15% green tea) and T3 (0.15% chitosan + 0.15% green tea) group. Feed intake was lower in control group (830g/week) than other treatment groups, but T2 of treatment group shows a tendency to decrease. The egg production and egg weight was significantly higher in T2 and T3 group than control. The cholesterol concentrations of serum with chitosan or green tea supplementation were significantly decreased after 8 week than starting trial, and especially those of T2 was lower than other treatment groups. The cholesterol concentrations of egg yolk were no effect of supplement with chitosan and green tea.

Soft X-ray radiolysis를 활용한 공기 중의 분자 오염(AMC) 측정 기술과 응용

김창혁 대한기계학회 2021 기계저널 Vol.61 No.7

해조부산물 추출 Fucoidan 및 미역의 첨가가 브로일러 초기의 육성성적 및 생리적 변화에 미치는 영향

김창혁,정현식,박재인 강원대학교 동물생명과학연구소(구 강원대학교 동물자원공동연구소) 2005 동물자원연구 Vol.16 No.-

This study was carried out to determine the effect of dietary crude fucoidans extracted from brown algae and brown seaweed powder supplementation on performance and bacterial count on feed additives of early broiler chicks. A total 180 broiler chicks were assigned to 4 treatments. Each treatment had 15 chicks with 3 replications. The supplementation levels of fucoidan and brown seaweed powder in the experimental diets were 0.5% (fucoidan), 3.0% (brown seaweed). The results obtained summarized as follows: The body weight gain and weight of chicks fed fucoidan (0.5%) was heavy compared with control. Feed efficiency of chicks fed fucoidan (0.5%) slightly improved compare with control. But also not significantly different among treatments. Gizzard weight, length of small intestine and weight of small intestine were not significantly different among treatments. The villi height of chicks fed fucoidan (0.5%) was long compared with control. According to these data, this trial proves the fucoidan could be successfully used as the dietary supplement.

소맥단백질에 LYSINE 첨가수준이 성장중인 흰쥐에서 14C - LYSINE , 14C - THREONINE 및 14C - LEUCINE의 체내대사에 미치는 영향

김창혁,이영철,전중수행 ( C . H . Kim,Y . C . Rhee,H . Tanaka ) 한국영양사료학회 1998 韓國營養飼料學會誌 Vol.22 No.1

돈분 - 남은음식물 혼합 Extrusion 사료의 급여가 브로일러의 사양성적 , 체조성 및 섭식행동에 미치는 영향

김창혁,송영환,채병조,이영철 한국동물자원과학회 2001 한국축산학회지 Vol.43 No.1

This study was conducted to investigate the feeding effects of extruded swine manure-food waste(ESF) mixture on growth performance, body composition and feeding behaviour in broiler chicks. The ESF mixture was composed of 40% swine manure, 40% food waste and 20% corn. Crude protein content in diets was 21% for starter and 18% for finisher, but energy content was same(3,100 ㎉/㎏). Feeding trial was done for 6 weeks with 5 treatment groups; control, 10% ESF, 20% ESF, 30% ESF and 40% ESF. There was no significant difference(P$gt;0.05) in body weight gain among treatments, but feed conversion ratio was poor(P$lt;0.05) when the ESF was added 30% or 40% in diets as compared to control and ESF 10% group. Abdominal fat pad was significantly higher(P$lt;0.05) in control than in ESF groups. The contents of crude protein and crude fat in carcass were not significantly difference(P$gt;0.05) among treatments. Liver, crop and gizzard weights were significantly(P$lt;0.05) increased as ESF level increased, but the other organ were not influenced by dietary regimens. Feeding behaviour was greater in day times than in the night and was peaked at before and after draw feeds. Cumulative feeding behaviour was increased with fed higher ESF ratios. In summery, it is concluded that the ESF could he added up to 40% in broiler diets in trials of growth performance.

Ridge Filter Design For a Particle Therapy Line

김창혁,한가람,이화련,김현용,장홍석,김정환,박동욱,Sea Duk Jang,황원택,김근범,양태건 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.64 No.9

The beam irradiation system for particle therapy can use a passive or an active beam irradiationmethod. In the case of an active beam irradiation, using a ridge filter would be appropriate togenerate a spread-out Bragg peak (SOBP) through a large scanning area. For this study, a ridgefilter was designed as an energy modulation device for a prototype active scanning system at MC-50in Korea Institute of Radiological And Medical Science (KIRAMS). The ridge filter was designed tocreate a 10 mm of SOBP for a 45-MeV proton beam. To reduce the distal penumbra and the initialdose, [DM] determined the weighting factor for Bragg Peak by applying an in-house iteration codeand the Minuit Fit package of Root. A single ridge bar shape and its corresponding thickness wereobtained through 21 weighting factors. Also, a ridge filter was fabricated to cover a large scanningarea (300 × 300 mm2) by Polymethyl Methacrylate (PMMA). The fabricated ridge filter was testedat the prototype active beamline of MC-50. The SOBP and the incident beam distribution wereobtained by using HD-810 GaF chromatic film placed at a right triangle to the PMMA block. Thedepth dose profile for the SOBP can be obtained precisely by using the flat field correction andmeasuring the 2-dimensional distribution of the incoming beam. After the flat field correction isused, the experimental results show that the SOBP region matches with design requirement well,with 0.62% uniformity.

삼국시대(三國時代)

김창혁,Kim, Chang-Hyeok 한국인삼전략화협의회 2006 인삼·약초 Vol.4 No.2

한국 외교, 이젠 國格을 고민해야 한다

김창혁 관훈클럽 2007 관훈저널 Vol.- No.105

Lysine 결핍에 따른 섭식반응과 뇌의 역할

김창혁 한국동물자원과학회 2002 한국축산학회지 Vol.44 No.2

본 시험은 사료내 필수아미노산 결핍이 rat의 사료섭취량과 혈액 및 뇌내 전이상엽피질(PPC)의 유리아미노산 농도 변화에 미치는 영향을 조사하여 뇌내 섭식조절 메카니즘을 규명하고자 하였다. 시험에 이용된 모든 사료의 질소원은 순수 아미노산 혼합물을 이용하였으며, 질소수준은 15%로 하였다. 사료는 하루 6시간 동안 섭취하도록 훈련을 시켰으며(17:00∼21:00, meal feeding method), 사료섭취량과 증체량은 사료급여 7일째부터 매시간 측정하였다. 실험 1에서 사료섭취량과 증체량을 사료급여 후 매시간 측정하였으며, 혈액 및 PPC의 아미노산 농도는 사료급여 11일째의 0, 1, 2, 3, 6시간 후에 관찰하였다. 실험 2에서는 complete diet에서 11일째에 lysine 결핍사료로 교체하여 사료섭취량, 증체량 및 혈액 및 PPC의 아미노산 농도는 실험 1과 동일하게 측정하였다. 실험 1에서 complete diet 급여에 따른 사료섭취량은 7일째부터 일일섭취량(15g/day)을 충족하였다. 또한 11일째의 혈액 및 뇌의 유리 아미노산 농도는 사료급여 한시간 후에 증가하였으나, 그 후에는 일정한 수준을 유지하였다. 반면, 실험 2에서는 complete diet에서 lysine 결핍사료로 교체함에 따른 사료섭취량은 급격하게 감소하였고 (P<0.05), 혈액 및 PPC의 유리 lysine 농도는 lysine 결핍사료 급여 2시간 후에 유의적(P<0.05)으로 감소하였으며, 누적 사료섭취량은 사료급여 4시간째 유의적으로 감소하였다(P<0.05). 따라서 이상의 결과로 보아 아미노산 결핍사료 섭취에 따른 혈액과 PPC의 해당 아미노산의 농도 감소는 사료섭취량의 감소에 비하여 빠르게 반응하였고, 이러한 결과로 미루어 사료중 아미노산 결핍에 반응하는 부위의 일부분으로 뇌내 PPC가 직접적인 관여를 한다고 판단된다. This study was conducted to investigate the effects of deficiency of essential amino acid in diet on feed intake and concentrations of free amino acid in plasma and brain(prepyriform cortex, PPC), and thereby th know the brain area engaged in the mechanism of feed intake regulation. In all trials, experimental diets were formulated with pure amino acid mixture to level of 15% nitrogen. Rats were trained to eat a single meal for 6 hours daily(meal feeding, 17:00∼21:00). Feed intake and body weight were measured hourly on and after 7th day of feeding. In Exp. 1, feed intake and body weight were measured every hour, and the free amino acid concentrations of plasma and PPC were analysed at 0, 1, 2, 3 and 6 h on the 11th day of feeding. In Exp. 2, the complete diet was replaced with lysine devoid diet at the 11th day, and feed intake, body weight and free amino acid concentrations in plasma and PPC were samely measured on Exp.1. In Exp. 1, feed intake on complete diet was self-sufficiented to daily feed intake level(15g/day) from the 7the day. Free amino acid concentrations of plasma and PPC at the 11th day were plateau at 1 hour after feeding. In Exp. 2, feed intake was quickly reduced by the diet replacement(P<0.05), and the free lysine concentration of plasma and PPC was also significantly decreased at 2 hour after feeding. However, cumulative feed intake was significantly decreased at 4 hour after feeding. These results may indicate that the concentrations of free lysine in plasma and PPC, under the condition of devoided lysine in diet, were more quickly droped than the reduction of feed intake rate. Hence, it is expected that PPC in brain might be a part of response area for limited amino acid.