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RISS 인기검색어
- 검색키워드
- 저자 : 김영범 ( T . S . Koh (검색결과 3 건)
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김영범,남기택,고태송 ( Y . B . Kim,K . T . Nam,T . S . Koh ) 한국축산학회 1985 한국축산학회지 Vol.27 No.10
In order to investigate an effect of non-protein nitrogen (NPN) on the energy metabolism of chicks, hatched Single Comb White Leghorn male chicks were fed for the first 8 days on a commercial chick mash, followed by 6 days on protein-free diet and the subsequent 6 days on the protein-free diets and protein diets containing 10.59% of crude protein supplemented with 0, 0.5, 1.0 and 1.5% of urea, respectively. When birds were fed on protein-free diets during 6 days of experimental feeding period, protein and lipid retentions were in negative balance. Protein loss was least in birds fed 1.0% of urea and lipid loss decreased in the order of increasing level of urea in the diets. The rate (MEn/GE) of metabolizable energy (MEn) to the gross energy (GE) tended to decrease in birds fed urea and the rate (ER/MEn) of energy retention (GR) to the MEn were -19.5∼-22.0%. The MEn intake and heat production (FIP) per metabolic body size (㎏^(0.75)) was lowered in the order of the increasing level of urea in diets, and ER her ㎏^(0.75) of birds fed 1.0 and 1.5% of urea was increased. Birds fed protein diets containing urea deposited more protein and less lipids compared to those containing no urea. The MEn/GE of protein diets supplemented with the urea were higher and the ER or ER/MFn were lower than those without supplementation. The MGn intake per ㎏^(0.75) of birds fed protein diet containing 1.5% of urea was increased and the ER was lowered in birds fed diets contained urea, and the HP was increased in the order of the increasing levels of urea in the diets.
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병아리에서 단백질의 생물학적이용성에 미치는 비단백태질소의 영향
고태송,김영범,서인준,남기택 ( Tae Song Koh,Young Bum Kim,In June Suh,Ki Teag Nam ) 한국축산학회 1985 한국축산학회지 Vol.27 No.12
In order to investigate an effect of non-protein nitrogen (NPN) on the biological utilization of protein, hatched single comb White Leghorn male chicks were fed for the first 8 days on a commercial chick mash, followed by 6 days on protein-free diet and the subsequent 6 days on the protein-free diets and protein diets containing 10.59% of crude protein supplemented with 0, 0.5, I.0 and I.5% of urea, respectively. When chicks fed protein-free diets, feed intake was lowered gradually as urea contents of diets were increased, while body weight loss was not altered. Protein efficiency ratio (PER) and net protein ratio (NPR) were increased in the order of the increasing level of urea in diet. Nitrogen balance were in negative balance while the values were increased with the increasing urea vontents in diets. Digestibility of nitrogen were lowered along with the increasing contents of urea, but biological value (BV) and net protein utilization (NPU) was found a trend to be high in birds fed 1.5% of urea. When birds fed protein diets, body weight gain and feed intake were not different among birds fed the graded levels of urea although feed conversions were trended to be high along with the increasing urea contents. The PER and NPR were lowered in the order of the increasing level of urea. Nitrogen balance and urinary nitrogen excretion was highered as urea levels of diets increased while fecal nitrogen excretion were not altered. BV and NPU of protein were found a tendency to be high in birds fed protein diets added with 0.5% of urea.
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감귤가공부산물의 아세톤추출 및 초음파 처리가 가금의 에너지이용성에 미치는 영향
고태송,서인준,남기택,김영범 ( T . S . Koh,I . J . Suh,K . T . Nam,Y . B . Kim ) 한국축산학회 1985 한국축산학회지 Vol.27 No.10
In order to investigate an utilizability of citrus pulp, a byproduct of manufacturing juice or can from orange, as a possible feed resource, metabolizable energy (MEn) and productive energy (PE) of untreated citrus pulp were compared with those of wheat bran and citrus pulp extracted with acetone (citrus pulp-AE) or ultrasonically treated citrus pulp (citrus pulp-UT). Hatched single comb White Leghorn male chicken were raised for 8 days with a commercial diet and for next 3 days with basal (wheat bran) diet and for subsequent 10 days with experimental diets containing 17.0% of cellulose (cotton meal), wheat bran, untreated citrus pulp, citrus pulp-AE arid citrus pulp-UT, respectively. The MEn was measured by intake energy minus excreted energy in excreta and the PE was calculated by protein and lipid retention determined by carcass analysis of birds. Body weight gain or protein and lipid retention were not significantly different among buds fed experimental diets. But the body weight gain or protein and lipid retention of birds fed citrus pulp-AE and -UT were highering compared with that fed untreated citrus pulp, And feed conversions of birds fed citrus pulp-AE and -UT showed lowering tendency compared to that fed untreated citrus pulp. The rate of MEn to gross energy (GE), MEn/GE, was not significantly different between birds fed wheat bran diet and those fed citrus pulp-AE and -UT diets, which were higher than that fed untreated citrus pulp. But PE and PE/MEn were not significantly different among birds fed experimental diets.. MEn of citrus pulp-AE had shown 1.885 ㎉ per gram dry matter was similar with that of wheat bran, which was significantly higher than those of untreated citrus pulp and citrus pulp-UT. The MEn/GE of citrus pulp-AE had been 44.8% and was also similar with 43.2% oi` wheat bran, which was significantly higher than 21.8 and 29.1% of untreated citrus pulp and citrus pulp-UT, respectively. The PE of untreated citrus pulp, citrus pulp-AE and citrus pulp-UT reached to 0.906, 1.831 and 1.500 ㎉ per gram dry matter, respectively. The results seem to indicate that the energy utilization of citrus pulp extracted with acetone be similar with that of wheat bran and that the availability of citrus pulp would be improved by some proper treatment.
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