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감귤부산물의 사료화에 관한 연구 Ⅰ. 감귤부산물 Silage 의 품질 및 발효기간중 Nylon Bag DM 소화율에 관한 연구
양승주(S . J . Yang),정재준(J . J . Chung),정창조(C . J . Chung) 한국축산학회 1984 한국축산학회지 Vol.26 No.3
A study was made to evaluate the nutritive value of citrus canning by-product silage for animal feed. Chemical components of citrus peel, segment, juice pulp and mixture of canning wastes were analysed. These were ensiled and silage evaluation was made with following treatments: T1; segment peel silage, T2; citrus pulp silage, T3; peel silage, T4; segment + pulp silage, T5; mixture silage, and T6; TS + lime powder. Mean protein content of citrus byproducts ranged from 9.89% to 10.35% (DM base), 12.55-12.76% in crude fiber and 66-70% in N.F.E.. Fresh peel showed higher N.F.E. and protein content than other part of citrus canning byproducts. Overall chemical components of citrus byproducts were superior except C.P. content when it is compared with wheat bran. Fermentation process induced a decreasing N.F E. and increasing fiber and NDF content of silages, and PH ranged from 4.3 to 3.4. The rate of lactic acid per total acid ratio-(L.A./T.A.) were higher in T3 and T5(85%), and lowest in T2 and T6(55%). NBDMD of silages were in order of T5 $gt; T3 $gt; T1$gt; T4 $gt; T6 $gt; T2, and improved its digestibility according to the stage of fermentation. It was apparent that the moisture content of byproducts greatly influenced the silage quality, however, it was possible to utilized materials of moisture content of 73-83%. The fermentation process terminated with in 40 days after ensiling and rapid drops of L.A./T.A. ratio and NBDMD was observed on 20 days after ensiling. A significant correlationship was existed between L.A./T.A. ratio and diestibilities (Y=0.66X + 33.9, r=0.89**).
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인간 미성숙난자의 동결.융해후 체외 배양된 난자에 대한 염색체 분석
박성은,정창조,손원영,정형민,이숙환,이우식,고정재,윤태기,차광열,Park, S.E.,Chung, C.J.,Son, W.Y.,Chung, H.M.,Lee, S.H.,Lee, W.S.,Ko, J.J.,Yoon, T.K.,Cha, K.Y. 대한생식의학회 1997 Clinical and Experimental Reproductive Medicine Vol.24 No.2
Objective: To investigate effects of cryoprotectant and cryopreservation on the chromosome of the human immature oocytes. Design: Intact cumulus-enclosed immature oocytes were collected from unstimulated ovaries and divided into three groups, such as no treatment as control (group 1), only 1,2-propanediol (PROH)-treated (group 2), and cryopreserved oocytes (group 3). Oocytes in group 1, 2, and survived oocytes after cryopreservation in group 3 were cultured for 48 hours. Setting: Infertility Medical Center at the CHA General Hospital, Seoul, Korea. Patients: Oocytes were obtained from Patients undergoing gynecological surgery. Main Outcome Measures: Maturation rate, abnormality in chromosomes by fluorescence in situ hybridization (FISH). Results: There was no effect of PROH only treatment on the chromosomal abnormalities in group 2 compared to control oocytes (41.4% and 31.8%, respectively). Whereas significantly increased abnormalities in chromosome (77.8%) were found in group 3. Conclusions: Human oocytes matured in vitro after cryopreservation at the germinal vesicle (GV) stage showed increased incidence of chromosomal abnormalities. These abnormalities may impair the capacity for further development of the embryos derived from frozen-thawed oocytes.
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감귤부산물의 사료화에 관한 연구 Ⅱ. Broiler 에 대한 감귤부산물의 사료가치에 관한 연구
양승주(S . J . Yang),정창조(C . J . Chung) 한국축산학회 1984 한국축산학회지 Vol.26 No.3
Dried Citrus peel and pulp were fed to broiler chicks at substitution level of 5 and 10%. Feed intake, conversion ratio and liveweight gain when fed this mixture was evaluated. Average broiler liveweight gain at 6 weeks of age was control (To); 1835.1g, 5% dried peel (T1); 1795.5g, 10% dried peel (T2); 1709.4g and 10% mixture (peel and pulp) (T3); 1614.9g, respectively. Feed intake was greatest in To (4350.1g) and lowest in T3 (4048.4g) and feed conversion ratio was in the order of To T1 T2 T3. Both weight gain and conversion ratio were reduced according to level of citrus waste added. Utilization of nutrients varied between different components, with the lowest value in crude fiver (To; 31.6%, T1; 44.52%, T2; 37.78%, T3; 36.64%) and highest in NFE (To; 88.90%, T1; 88.98% T2; 86.64%, T3; 86.21%). Digestibility of protein between treatments was superior in the control and decreased according to the level of citrus byproduct added (To; 70.37%, T1; 62.0%, T2; 59.65%, T3; 58.19%). However, the opposite was true in the case of the other nutrients. A higher protein digestibility exist at the starting period and lower in the finishing period. It was suggested that the substitution level of dried citrus peel and pulp to broiler feed is maximum 10% and best result of 5%. Red intake, conversion ratio and weight gain was affected by 10% substitution level of peel and pulp miture.
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유익종(I . J . Yoo),박병성(B . S . Park),정창조(C . J . Chung),김규일(K . I . Kim) 한국축산학회 1993 한국축산학회지 Vol.35 No.2
This study was carried out to examine the nutritive value of horse meat by analyzing the proximate composition, mineral contents, amino acid composition and fatty acid composition. The proximate composition of horse meat was affected by the breeds and carcass parts. Especially, fat contents of native horse meat were higher than those of racing horse meat. Mineral contents of horse meat were not significantly different with the breeds and carcass parts. The ratio of essential amino acids(EAA) to total amino acids was not significantly different with carcass parts within the same breeds, but was different between breeds. The contents of arginine, phenylalanine, leucine and lysine have shown to be higher, while those of methionine, isoleucine and valine were lower in horse meat than those of other meats. The amounts of glutamic acid, one of nonessential amino acids, was the highest and cystine was the lowest. The limiting amino acids appeared to be methionine and cystine. In terms of fatty acid composition, it was greatly affected by breeds and carcass parts. Linoleic acid(18:2ω6) of the racing horse meat was in the highestamount, while the content of oleic acid was the highest in the nonfattened native horse meat. Linolenic acid among ω3 fatty acids was present considerably high; 7.9% in loin and 10.4% in round. In addition, the ratio of ω3 fatty acid to ω6 fatty acid was quite larger, ranged from 0.48 to 0.54.
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