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면양의 제1위내 미생물 단백질 함량에 미치는 요인과 소장에서 아미노산이용에 관한 연구 1 . 제1위 미생물 단백질합성
이남형,암스트롱 ( Nam Hyung Lee,D . G . Armstrong ) 한국축산학회 1985 한국축산학회지 Vol.27 No.7
This experiment was conducted to examine the effects of different carbohydrate source (barley and maize) and nitrogen source (soyabean meal and meat and bone meal) upon rumen microbial protein synthesis as well as nitrogen flow in the small intestine of sheep given diets containing grains and alkali treated barley straw (approximately 74:26). The results obtained are as follows: 1) No significant differences (p$gt;0.05) between diets were observed in the mean values obtained for pH, VFA concentrations and the molar proportions of acetic, propionic, and butyric acids. NH³-N concentration in rumen fluid were non significantly lower (p$gt;0.05) for the maize-soya diet than the other diets. 2) No significant differences (p$gt;0.05) between diets were observed in the mean values obtained for rumen volume, rumen dilution rate, and rumen retention time. Rumen dilution rate (h^(-1)) for the barley-meat and bone, barley-soya, maize-meat and bone, and maize-soya diets were estimated as 0.043, 0.046, 0.036 and 0.048 respectively. 3) There were significant differences between diets in the quantities of DM and OM passing at the proximal duodenum and terminal ileum (p$lt;0.05) and in the faeces (p$lt;0.01 for DM and p$lt;0.05 for OM). However, there were no significant differences (p$gt;0.05) between diets in the apparently digested DM and OM disappearing before the small intestine and the whole digestive tract. The mean values for apparent OM digestibility and the proportion of the apparently digested OM disappearing prior to and within the small intestine for four diets were 0.8246±0.0168, 0.6717±0.238, and 0.2351±0.0247 respectively. 4) No significant differences (p$gt;0.05) between diets were observed for the total N and NAN entering the small intestine, total N in the urine, retained N, and proportionate disappearance apparently digested N within the small intestine and the whole digestive tract. It was non significant net gain in the quantity of total N in the passage of the digesta through the stomach for all diets (1.107±0.035 of mean values). But there were significant differences between diets in the quantities of total N leaving the small intestine (p$lt;0.01) and N absorbed in the whole digestive tract (p$lt;0.01). 5) Proportion of microbial N entering the small intestine estimated by using S^(35) infusion techniques were 0.4998 for barley-meat and bone meal diet, 0.5269 for barley-Soya diet, 0.4512 for maize-meat and bone diet, and 0.5384 for maize-Soya diet. The dietary N degradation in the rumen for the diet containing meat and bone meal was non significantly lower (p$gt;0.05) than the value for the diet with soyabean meal. 6) The efficiencies of microbial N synthesis within the rumen, expressed as 9 microbial N per ㎏ organic matter apparently digested in the rumen (OMAPDR) or organic matter truly digested in the rumen (OMTDR), were shown no significant differences between diets. The efficiencies of microbial N synthesis for barley-meat and bone diet, barley-Soya diet, maize-meat and bone diet, and maize-soya diet were estimated as 16.79, 16.30, 15.37 and 17.58 gN/㎏ OMTDR respectively or 22.71, 21.21, 20.36 and 24.21 gN/㎏ OMAPDR respectively.
부로일러 초생추에 있어서 박류의 대사에너지 측정에 관한 연구 ( 2 )
이남형,김춘수 ( N . H . Lee,C . S . Kim ) 한국축산학회 1973 한국축산학회지 Vol.15 No.2
To determine metabolizable energy values for domestic fish meal, silk warm pupae, linseed oil meal, cotton seed oil meal, corn gluten meal, single cell protein by chromic oxide indicator method, 105 irds of a commercial broiler at 4 weeks age were employed in this experiment. The results obtained are summarized as follows: 1. The linear standard curve of chromic oxide at 430mμ has the equation form of Y=0.395X. 2. It was shown that corrected metabolizable energy per gram of domestic fish meal, linseed oil meal, cotton seed oil meal, silk warm pupae, corn gluten, single cell protein were, respectively, 2,776 ㎉, 1,081 ㎉, 1,471 ㎉, 5,550 ㎉, 3,106 ㎉, 2,246 ㎉. 3. In body weight gain and feed efficiency, corn gluten group was superior to the ethers and linseed oil meal group was significantly lower than the others.
부로일러 초생추에 있어서 곡류사료의 대사에너지 측정에 관한 연구;제3보
이남형,김춘수 한국축산학회 1974 한국축산학회지 Vol.16 No.1
To Study the metabolizable energy values of white corn, yellow corn, barley, naked barley, wheat, milo, barley crumble, barley screenings, and wheat shorts (I, II) by chromic oxide indicator technique, 165 birds of a broiler type at 4 weeks of age were employed for this experiment. The substitution level of test ingredients was 30% on the basis of air dry matter. The results obtained are summarized as follows; 1. It was obtained that corrected metabolizable energy values of white corn, yellow corn, barley, naked barley, wheat, milo, barley crumble, barley screenings, wheat shorts (I) and wheat shorts (II) were 3475 ㎉, 3496 ㎉, 3241 ㎉, 3598 ㎉, 3345 ㎉, 3514 ㎉, 3152 ㎉, 2451 ㎉, 2518 ㎉, 2521 ㎉ per kilogram, respectively. 2. In the body weight gain and feed efficiency, barley crumble group was superior to the others. The groups received naked barley, wheat shorts (II) or barley screenings gained poorly.
부로일러 초생추에 있어서 강부류사료의 대사에너지 측정에 관한 연구 ( 제4보 )
이남형,김춘수 ( Nam H . Lee,Chun S . Kim ) 한국축산학회 1975 한국축산학회지 Vol.17 No.3
This experiment was conducted to study the ME values of rice bran, wheat bran, barley bran, sweet potato meal (include leaf and stem), sweet potato meal (expressed processing) by chromic oxide indicator technique in broiler chickens. The substitution level of test ingredients was 30% on the basis of air dry matter. The N-corrected ME values of rice bran, wheat bran and barley bran were 1,600, 1,489 and 2,315 ㎉/㎏ respectively. The sweet potato meal including leaf and stem and mechanically expressed sweet potato meal gave the ME values of 2,406 and 2,528 ㎉/㎏ respectively.
소맥부 대신 옥수수와 생미강을 첨가시 볏짚 - 계분싸일레지의 질에 미치는 영향
이남형,김춘수 ( Nam Hyung Lee,Chun Su Kim ) 한국축산학회 1980 한국축산학회지 Vol.22 No.5
This experiment was carried out to study the effect of rice straw-manure silage containing the Association of Official Analytical Chemists dry matter digestibility as well as the effects of two different moisture levels (46% and 66%) upon the silage-making. The results obtained are as follows : 1. In vivo dry matter digestibility of silage products ranged from 57 to 60% but failed to show significant differences among the different silage products. 2. Response to the different moisture contents (46% vs 66%) was not evident, and little statistical differences were noted on neither the chemical composition nor the digestibility.
이남형,오스코푸,김춘수 ( Nam H . Lee,E . R . OrsKov,Chun S . Kim ) 한국축산학회 1982 한국축산학회지 Vol.24 No.4
This experiment was carried out to estimate the rate of degradation of soyabean meal and fish meal when they were incubated in nylon bags in the rumens of dairy cows receiving roughage. The rate of disappearance of dry matter and nitrogen from the vegetable source of protein was greater than the rate of disappearance from animal source of protein. The dry matter and protein disappearance of protected soyabean meal was lower than those of non-protected soyabean meal.
여러가지 산란계 사료 첨가제가 계란의 IgY 수준과 산란율에 미치는 영향
이남형,노정해,한찬규,성기승 한국축산학회 1999 한국축산학회지 Vol.41 No.2
Breeding tests were performed in order to obtain high IgY eggs from laying hens by producing 5 specially formulated feeds(supplemented with 4% garlic powder, 2% or 4% Kelp meal, 2% sea tangle powder or Se(0.5 ppm) + Vit. E(300% NRC standard). Supplemients tended to decrease laying rates. The result of average IgY contents in the whole experimental period showed that the 4% kelp meal treated group had much higher IgY value than the other groups. Especially, the result of the last week revealed that only the 4% kelp meal treated group and 2% sea tangle treated group had higher values than the control group. The IgY value of the 4% kelp treated group was higher than that of the control group by 10%, and the increase was presumed to be manifested by extending the experimental period. To increase the total IgY content, another breeding test was performed with three supplements(2% ginger, 0.5% cinnamon, or 2% mint). A high IgY content was detected for cinnamon and mint-added groups without decreasing the of laying rates.