계란의 콜레스테롤 함량과 지방산의 조절 - 현재와 전망

지규만 한국가금학회 2004 韓國家禽學會誌 Vol.31 No.1

현대인이 섭취하고 있는 식품 중에서 계란의 콜레스테롤처럼 많은 연구자의 관심을 끌었던 성분도 많지 않을 것이다. 콜레스테롤 섭취와 심장혈관계 질환과의 연관성에 대한 우려는 계란이 영양적으로 매우 우수한 식품임에도 불구하고 그 소비에 막대한 지장을 주고 있다.(중략)

사료자원개발과 이용에 관한 연구 -임박의 사료적 가치-

지규만,김춘수 대한양계협회 1971 월간 양계 Vol.3 No.6

가금생화학의 최근의 발전 : 지방간 및 신장비대증

지규만,Donald W. Bannister 한국가금학회 1980 韓國家禽學會誌 Vol.7 No.2

가금의 생화학적기전에 대한 연구는 아직도 다른 분야의 연구에 비해 많이 뒤떨어져 있지만, 중간대사의 주요과정들이 포유동물의 것과 본질적으로 매우 유사하다는 정도는 알려져 있다. 가금과 포유동물 사이의 중요한 생화학적 차이점들에 대해서 최근의 총설(Pearce, 1977)에서 자세히 다뤄졌으며 여기서는 그중 두 가지에 대해서만 간단히 언급코자한다. (중략)

채종박의 물리적처리가 초생추성장에 미치는 영향

지규만,김춘수 대한양계협회 1971 월간 양계 Vol.3 No.7

초생추에 대한 닭불가식 내장 싸이레지 급여시험

지규만,김춘수 대한양계협회 1971 월간 양계 Vol.3 No.8

단백질 수준 및 DL - Methionine 첨가가 초생추의 성장율 및 혈액 Cholesterol 함량에 미치는 효과

지규만,육종융,이영상 한국축산학회 1969 한국축산학회지 Vol.11 No.2

This experiment was carried out to investigate the effects of protein levels and DI-methionine supplementation on the plasma cholesterol levels and the growth rate of chicks fed semi-purified diets containing soybean oil meal and perilla oil meal as dietary protein sources. One hundred male chicks of 10 day old S.C.W. Leghorn were alloted into 10 lots. The treatments imposed were three different levels of protein (15, 20 and 25%) and three levels of DL-methionine supplementation (0, 0.1 and 0.2%) as 3×3 factorial design. Fish meal was added at the level of 12% to compare its effect on various items with vegetable protein source only at optimal protein level (20%). The experimental results obtained were as follows: 1) The growth rate was highly significantly (P$lt;0.01) improved as the level of protein was increased. But there was no significant difference between the levels of methionine. Also, highly significant improvement was appeared in growth rate by fish meal fed chickens. 2) Highly significant difference was observed in the amount of feed-intake by the chicks fed the diet containing different level of dietary protein. Chicks fed 15% protein consumed significantly (P$lt;0.05) less amounts of diet than those fed 20 or 25% protein level S. Dietary protein level of either 20 or 25% did not result any significant difference in the feed consumption, 3) Feed efficiency was significantly (P$lt;0.01) improved as the level of protein was increased and also by supplementing excess amount of DL-methionine. Fish meal increased not only feed consumption amount but also improved feed efficiency as 2.47 compared with 3.11 of 0.1% DL-methionine supplementation group. 4) Plasma cholesterol levels were significantly (P$lt;0.01) increased when chicks were fed diets containing 15% protein level. Chicks fed the diet of 25% protein level showed the lowest level of plasma cholesterol. In comparison with 0.1% and 0.2% of DL-methionine supplementation groups in each protein level, feeding of the excess amount of methionine significantly (P$lt;0.01) depressed cholesterol levels in chicks fed 15 and 20% protein diet. No difference was found in plasma cholesterol level in fish meal lot. 5) Although, no significant difference was observed in metabolizability of energy between chicks of 0.1 and 0.2% DL-methionine supplementation groups, the former showed higher values than those of the latter. Chicks fed 25% protein diet showed the lowest value of metabolizable energy (M.E.) (P$lt;0.01). Fish meal increased the valve of M.E. with no significance. 6) The percentages of Nitrogen retention was the lowest in groups of 25% protein level (P$lt;0.01) but showed no difference between each level of methionine supplementation or between each treatment of 20% protein diet.

L - Tyrosine 및 Thiosemicarbazide 급여가 메추리의 근육연도 ( 筋肉軟度 ) 와 Collagen 함량에 미치는 효과

지규만,강면희,지해성 ( K . M . Chee,M . H . Kang,H . S . Jee ) 한국축산학회 1982 한국축산학회지 Vol.24 No.6

Effects of administration of thiosemicarbazide (TSC) and L-tyrosine supplemented to the diets on tenderness and intramuscular collagen levels in muscles of 10 months old female quails (Cortunix cortunix j.) were studied. Forty birds were alloted into 4 dietary treatments, i.e. Basal diet, B.D.+tyrosine (1.5%), B.D. + TSC (0.03%) and B.D. + tyrosine (1.5%)+TSC (0.03%). All diets fed for 18 days were made isocaloric and isonitrogenous by supplementing tyrosine at the expense of L-glycine. The semipurified basal diet was composed of soybean oil meal as the only source of nitrogen, glucose and corn oil as major ingredients. Birds fed the diets containing TSC alone or along with tyrosine consumed significantly less feed and showed severe body weight loss compared to the birds fed the other diets (p$lt;0.05). Administration of either TSC or tyrosine, however, did not induce significant changes in weight of organs such as liver, heart, spleen and thyroid gland expressed as % of body weight. No statistical differences were observed in plasma ascorbic acid contents, collagen levels in thigh muscle (biceps femoris) and levels of thermal labile collagen in breast muscle (pectoralis superficialis) among the birds fed the various diets. Shear values measured by an Instron tended to be higher in the order of control $lt; tyrosine $lt; TSC Tyrosine + TSC groups without significance. Collagen content in breast muscle appeared significantly higher in birds fed the diets with TSC or tyrosine + TSC (P$lt;0.05). Percentage of thermal labile collagen of total collagen was reduced by administration of TSC alone. The tendencies appeared here are partly not in agreement with those observed in chicken. It is not clear whether the results observed in present experiments were due to the severe weight loss caused by TSC or to species differences.

Casein 단백질과 어유의 섭취가 병아리의 혈액 Cholesterol 함량에 미치는 영향

지규만,최인숙 한국축산학회 1995 한국축산학회지 Vol.37 No.2

This study was designed to investigate any possible interactions between the mechanisms for the hypercholesterolemic effect of dietary casein and the hypocholesterolemic effect of dietary fish oil(Marinol containing EPA 24.8% and DHA 10.1%) in young chicks. Two feeding trials were conducted using a strain of Single Comb White Leghorn male chicks of about one-week old. The diets in Exp. 1 and 2 were fed ad libitum for 28 and 14 days, respectively. Consumption of casein, compared to that of soy protein, led to a remarkable reduction in feed intake and body weight gain. However, no significant differences were observed between performances of chicks fed the diets containing fish oil or com oil. Consumption of the casein diet caused a significant increase in total plasma cholesterol levels, and that was primarily due to the increased level of lipoprotein cholesterol rather than high density lipoprotein cholesterol. In Exp. 2 where casein was the only protein source, ingestion of the diets with added cholesterol led to a severe hypercholesterolemia mainly because of the increase in the level of plasma low density lipoprotein cholesterol. This response was most remarkable in the chicks fed the com oil diets with added cholesterol. An interesting observation was that chicks fed the fish oil diet appeared to have significantly lower plasma cholesterol levels compared to those of the com oil group(P$lt;0.05). However, fish oil intake was not quite effective in preventing hypercholesterolemia in chicks fed the diet without supplemental cholesterol. These results seem to suggest that the control mechanisms for plasma cholesterol levels by fish oil and casein might not be interrelated.

원료사료의 유효 Biotin 함량

지규만 대한양계협회 1985 월간 양계 Vol.17 No.1

단속점등(Intermittant Lighting)의 효과

지규만 대한양계협회 1985 월간 양계 Vol.17 No.7