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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.
이남형,오스코푸 ( N . H . Lee,E . R . OrsKov ) 한국축산학회 1982 한국축산학회지 Vol.24 No.3
This experiment was carried out to study on the rumen outflow rate of chromium mordant barley straw and fish meal in sheep. All the animals were fed on ammonia treated barley straw diet libitum. Chromium mordant straw or fish meal was poured into the rumen. The feces were sampled for 5 days. The results obtained are as follows; 1. Chromium treatment rendered the fish meal or straw both undigestible and undegradable in the rumen. 2. The rate of outflow of fish meal from the reticulo-rumen was found to be faster than that of barley straw by 2.3 times. The rumen retention time of fish meal was varied from 23.8 to 33.3 hours with a mean of 27.0 hours while the rumen retention time of barley straw was varied from 47.6 to 100 hours with a mean of 62.5 hours.
이남형,김춘수,육종융 ( N . H . Lee,C . S . Kim,C . Y . Yuk ) 한국축산학회 1979 한국축산학회지 Vol.21 No.1
In an attempt to enhance the nutritive value of barley straw a series of experiments were carried out to study the effects of 1) alkali treatment on the in vivo dry matter digestibility, 2) ensiling barley straw on palatability and 3) barley straw silage on the digestibility of goat. The results are summarized as follows: 1. The effect of alkali treatment on the in vivo dry matter digestibility of barley straw. (1) The in vivo dry matter digestibility of the alkali treated barley straw tended to improve with increasing level of NaOH(0, 3, 6, 12%). No significant difference was found between 6% and 12%, or 3% and 6% NaOH level, but i t was found significant difference between 3% and 12% NaOH level. The in vivo dry matter digestibility of barley straw in 12% NaOH level was higher than 3% NaOH level(P$lt;0.05).Also, the in vivo dry matter digestibility of alkali treated straw was. higher than the untreated straw(P$lt;0.05) . (2) Neither reaction time (0, 2, 4, 6 day) of NaOH in the room temperature nor reaction temperature(5℃ and 20℃) in 3% level of sodium hydroxide influenced the in vivo dry matter digestibility of barley straw. (3) The amount of neutral detergent fiber(NDF) and hemicellulose of barley straw, barley hull and rice straw decreased with increasing level of sodium hydroxide. (4) Silica contents of rice straw, barley hull and barley straw were 7.53%, 5.91% and 2.03%, respectively. Solubility of silica increased with higher level of NaOH and the effect was especially pronounced when NaOH level exceeded 6%. 2. Ensiling of barley straw and digestion trial with goat. The silage was prepared in combination of alkali treated barley straw with wet poultry manure and wheat bran for the attempt of improving the silage quality and palatability for cattle feeding. (1) Proximate composition of barley straw silage was not different between the trench silage and the vinyl bag silage. (2) Hemicellulose content of silage after 60 days of ensiling was lower than the initial stage. The effect was more pronounced with the vinyl bag silo than the trench silo. (3) Total nitrogen of silage did not change during the 60 days of ensiling. However, amino acids of silage decreased 22 percent and non protein nitrogen increased compared to the initial stage. (4) Total organic acid of the silage ensiled in the vinyl bag silo was higher than the trench silo. The silage was characterized as heterolactic fermentation, producing approximately equal amounts of lactic and acetic acid. (5) Total digestible nutrients (TDN) value of the barley straw silage was estimated as 60.70% in the trench silo and 61.93% in the vinyl bag silo on the dry matter basis. Based upon above results, it is concluded that the barley straw silage can partly replace milling by-products (bran) on the TDN basis.
김춘수,이남형 ( C . S . Kim,N . H . Lee ) 한국축산학회 1974 한국축산학회지 Vol.16 No.2
To determine the effects of dietary levels of hydrocarbon grown yeasts on the growth, feed efficiency, blood uric acid content of broiler chicks and also on the metabolizability of the yeast. tile feeding experiments were ran for a period of 14 weeks. The results obtained are summarized as follows: 1. In the body weight gain, feed intake and feed efficiency n-paraffin-grown yeast (wash) group was superior to that oP either gas oil or n-paraffin grown yeast (solvent) group in the preliminary trial. 2. It was observed that neither the weight gain nor the feed efficiency was significantly different among the experimental groups including the control. 3. The metabolizable energy of both gas oil and n-paraffin grown yeast were determined as 2374 ㎉/㎏ and 2742 ㎉/㎏ respectively. 4. The differences in nutrient availability and the results of carcass analysis were not statisticaly significant among the experimental groups. 5. Serum uric acid was shown to be higher as to increase the level of yeast but differences were not significant up to 12% level compared to that of control, but the group receiving 15% level resulted in twice of that control value. Red blood cell was lower as to increase the level of yeast added in the ration.
회장에 (回腸) Cannula 를 설치한 돼지에서 아미노산의 생체내 이용성
박병성(B . S . Park),윤칠석(C . S . Yoon),이남형(N . H . Lee),지규만(K . M . Chee) 한국축산학회 1989 한국축산학회지 Vol.31 No.10
Bioavailability of dietary amino acids were measured in swine fitted with ileal T-cannula. Three swine with average body weight 50± 1.7kg were fed diets containing soybean meal or fish meal as the only N sources. After 5 days of preliminary feeding period, ileal digesta and anal excreta were collected for two consecutive days. N-free diet composed of glucose, corn oil, α-cellulose and vitamin-mineral premix were also fed to evlauate amount of endogenous amino acids. Amount of amino acids disappeared were generally larger in fecal excreta than in ileal digesta with a significant difference(p $lt;0.05) for fish meal. Apparent availabilities of amino acids in soybean meal and fish meal were 86.7 and 83.4% for ileal digesta, and 91.7 and 91.1% for feces, respectively. True availabilities of amino acids in soybean meal and fish meal were 89.5 and 86.5% for ileal diegesta, and 92.7 and 92.2% for fecal excreta, respectively. Amount of amino acids in soybean meal appeared better utilized than those in fish meal evaluated in ileal digesta. No such trend, however, was observed in fecal excreta. It appeared that in vivo bioavailability of dietary amino acids in swine should be studied with ileal digesta rather than fecal material.