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Effects of dietary supplementation with probiotic CS-A on performance in broiler chickens
Seong Soo Kang1*, Se Eun Kim, Ara Go, Kyung Mi Shim, Chun Sik Bae, Chang Jong Moon, Sung-Ho Kim, Jong-Choon Kim, Jin-Cheol Yoo, Seung Sik Cho 충북대학교 동물의학연구소 2012 Journal of Biomedical and Translational Research Vol.13 No.3
Probiotics, enzymes, organic acids, oligosaccharides, antioxidants, and other functional materials are actively being explored as alternatives to antibiotics. Probiotics include live beneficial microorganisms that colonize the intestinal tract and competitively inhibit attachment and growth of harmful microbes. Probiotics also increase feed efficiency by assisting in nutrient absorption and digestion. The current study was conducted in order to evaluate the effect of a new probiotic, CS-A, as a dietary supplement of a fermented product on growth performance, feed intake, and feed conversion efficiency in broiler chickens, and to evaluate its value as an alternative for antibiotics used as a feed additive. Antibacterial and anti-inflammatory effects of CS-A were investigated in vitro and the in vivo effects of a constant concentration of supplemented CS-A on growth rate and feed efficiency were evaluated. In addition, the safety of CS-A was assessed by examination of common symptoms and mortality. Determination of minimal inhibitory concentration revealed an excellent antibacterial effect of CS-A. Cytotoxicity was low and anti-inflammatory effects were achieved at the effective concentration of CS-A. Supplementation with 0.1% CS-A resulted in a feed efficiency score of 1.84 in broilers, compared to 2.00 in the control group. There were no adverse clinical findings, necropsy findings, hematology, and altered serum biochemistry parameters, and no mortality. Thus, it is concluded that CS-A is safe and effective as a feed additive.
Kyu-shik Jeong,정원일,Jae-yong Chung,Mi-young An,Chae-yong Jung,Gyoung-jae Lee,Jong-soo Kang,Byeong-cheol Kang,Young-heun Jee,Bruce H Williams,Young-oh Kwon,Da-hee Jeong 대한수의학회 2003 Journal of Veterinary Science Vol.4 No.2
Cirrhosis Occurring in a Young Woodchuck (Marmota monax) Due to Vertical Transmission of Woodchuck Hepatitis Virus (WHV)Da-hee Jeong, Won-il Jeong, Jae-yong Chung, Mi-young An, Chae-yong Jung, Gyoung-jae Lee1, Jong-soo Kang1, Byeong-cheol Kang2, Young-heun Jee3, Bruce H Williams4, Young-oh Kwon5 and Kyu-shik Jeong*College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, Korea1Shinwon Scientific Co., LTD, Research Institute, Suwon, Korea2Clinical Research Institute, Seoul National University, Seoul 110-744, Korea3College of Veterinary Medicine, Jeju National University, Jeju 690-756, Korea
강미정,윤경영,성종환,이광희,김광수 동아시아식생활학회 2004 동아시아식생활학회지 Vol.14 No.4
Studies on extraction and color stability of carotenoids from astringent persimmon(Diospyros kaki) were performed to provide the basic information for the utilization of persimmon pigment as a new source of natural food colorant. The major carotenoids in astringent persimmon were beta-cryptoxanthin, lycopene and beta-carotene. Beta-cryptoxanthin was the first major pigment and lycopene the next. Total carotenoid content in persimmon calculated as beta-carotene equivalent was 107.4 ㎍/g. The data indicated that the astringent persimmon was a good source of carotenoid pigment. The physical and chemical stabilities of carotenoid from astringent persimmon were investigated at various conditions of temperature, pH and antioxidant. The effects of oxygen and light on the stability of carotenoid pigment has been investigated. The factors that cause the discoloration were visible light, temperature above 60, pH below 5 and oxygen. Especially, the carotenoid pigment was very sensitive to light and oxygen. Carotenoid stability was much improved with increasing nitrogen concentration in the atmosphere. Persimmon pigments have been found to be most stable at 5~10. And tocopherol was the most effective inhibitor of the pigment discoloration.
강현중,왕종수 瑞逸大學 1998 論文集 Vol.16 No.-
We prove the efficient technique(SHUTTLE polling method) for management traffic generated by the polling method. Because generating rate of management traffic varies with management behavior, the problem of current polling method is inferred from the basis of real data. For the purpose of improving the high performance of shuttle method, we compare and analyze existing
강경수,이종호,우호길 충남대학교 공업교육연구소 2002 論文集 Vol.25 No.1
In this study, a shape optimization for a frame of a vehicle windshield wiper system is presented. This study investigated how to optimize a shape and minimize mass(volume) and the number of parts with sufficient strength of a frame instead of a conventional structure. The dffectiveness of this analysis procedure is expected to reduce development lead time &cost actually.
勤勞者의 離職意思에 企業福祉가 미치는 效果에 관한 硏究
姜聲浩,姜鍾秀 大邱大學校 社會科學硏究所 1998 社會科學硏究 Vol.4 No.3
본 연구는 생산성 향상의 저해요인이자 기업경영의 중요한 애로점으로 인식되고 있는 근로자의 이직의사에 기업복지가 미치는 효과를 분석한 것으로써, 다양한 이직의 접근방법과 선행연구의 분석결과 도출된 연구문제를 중심으로 실증적으로 검증하였다. 대구지역 869명의 근로자로부터 회수된 설문으로부터 이직의사에 영향을 미치는 변수들에 관한 다중회귀분석 결과 기업복지의 만족도/수준이 높을수록 근로자의 이직의사는 낮은 것으로 조사되어 연구가설을 지지하고 있다. 따라서 이러한 연구결과는 그동안 이직연구에서는 도외시되어온 기업복지의 효과성을 인정하는 것으로, 개별기업의 이직관리에 실질적인 도움이 될 것이며 또한 기업복지 활성화의 유용한 이론적 기초가 될 것이다.
강종봉,문종수,이수영 慶南大學校 附設 工業技術硏究所 1998 硏究論文集 Vol.15 No.3
Si 슬러지를 사용하여 반응결합 Si₃N₄성형체를 제조한 후 특성을 분석하였다. Si 슬러시에는 순수한 Si괴와 유기물이 포함되어 있으며 정제한 Si분말은 8∼10wt%의 산소를 함량하고 있어 질화를 방해하는 주원인이 됨을 알 수 있었다. 재소결 공정인 가스압 소결을 통하여 반응 소결한 Si₃N₄시편을 치밀화 시킬 수 있었으며 본 실험에서 제조한 SRBSN의 강도와 파괴인성 값은 각각 504MPa와 6.1MPa·m½이었다. Si₃N₄ were prepared by the reaction bonding process with Si sludge as a starting materials and the results shows as follows: Si powder contained 8∼10wt% of oxygen which prevented the nitridation of the Si. GPS process after nitridation promoted the densification of the RBSN to the 97% of theoretical density. The flexural strength and fracture toughness of the SRBSN samples were 500MPa and 6MPa·m½. respectively.
PFAPA (Periodic Fever, Aphthous Stomatitis, Pharyngitis, and Cervical Adentis) 증후군 1예
강혜련,김신우,배기범,박지현,강영모,이종명,김능수 대한감염학회 2001 감염 Vol.33 No.3
PFAPA (Periodic Fever, Aphthous stomatitis, Pharyngitis, and cervical Adenitis) syndrome has characteristic features of an early onset, periodicity (interval <4 weeks), and a brisk rising high fever (>39℃) of 3 to 6 days' duration without signs of infection. An 18-year-old male was admitted for high fever, sore throat, headache, and abdominal pain. He had suffered from periodic fevers associated with pharyngitis and cervical adenitis for 14 years without any evidence of infection. The fever recurred approximately every 4 weeks lasting 4 to 7 days with intervening asymptomatic periods. Physical examination was unremarkable except for slightly injected tonsils. Most laboratory tests including CBC were normal except for elevation of Creactive protein level (3.47 mg/dL). Bacteriologic and radiologic studies were negative. The fever was spontaneously subsided in 6 days. To our knowledge, this is the first case report of PFAPA syndrome in Korea. (Korean J Infect Dis 33:219∼222, 2001)