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RISS 인기검색어
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- 저자 : 정근기 ( Chil Surk Yoon (검색결과 4 건)
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면양에서 조대두 ( 粗大豆 ) 레시친 첨가시 소화율 , 제1위 및 혈액지질의 지방산조성에 미치는 영향
윤칠석,정근기,배동호 ( Chil Surk Yoon,Keun Ki Jung,Dong Ho Bae ) 한국축산학회 1986 한국축산학회지 Vol.28 No.7
This experiment was carried out to study effects of crude soybean lecithin addition on digestibility of ration components, ruminal characteristics, fermentation of long-chain fatty acids in the rumen, and composition of fatty acids in blood lipid. The results obtained are summarized as follows: 1. The digestibility of OM, protein, ether extract, fiber, ADF, NDF and energy were improved with 4% lecithin, and especially ether extract was significantly (P$lt;.01) more digested than the control. 2. The digestibilities of major fatty acids were not greatly affected by the inclusion of lecithin. However, the unsatutated fatty acids were more digestible than the saturated fatty acids regardless of the treatments. 3. The ruminal pH at the 8% level was slightly lower than at the 0 or 4% levels. The ruminal viscosity was greatly influenced by the addition of lecithin. The ruminal viscosity was much lower at the 4 and 8% levels (6.0-9.0 cp) compared to the control (13.0-16.0 cp). 4. The total VFA concentration tended to be slightly declined with increasing lecithin. In the molar proportions of individual VFAs, the addition of lecithin resulted in a high increase in proportion of propionic acid and n-valeric acid. The acetic acid production declined greatly as the crude soybean lecithin increased. 5. The ruminal ammonia concentration was increased with lecithin supplementation. 6. The stearic acid in the rumen fluid was quantitatively the most important fatty acid, followed by palmitic and oleic acids although the difference in the proportions among treatments existed. The fatty acids in the faeces ware predominated stearic acid followed by palmitic acid, and unsaturated fatty acids were at low percentage. 7. The concentration of free fatty acid in blood lipid increased with lecithin addition. In the fatty acid composition of blood, the stearic acid was quantitatively the most proportion, followed by oleic acid and palmitic acid. 8. The above results indicate that the inclusion of crude lecithin can be well utilized by ruminants in view of the. profitable effects in the digestibility and the production of individual VFAs.
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대두박과 요소를 첨가한 옥수수 및 보리 급여시 면양의 소화관내 아미노산 이용에 관한 연구
윤칠석,이남형,정근기 ( Chil Surk Yoon,Nam Hyung Lee,Keun Ki Jung ) 한국축산학회 1986 한국축산학회지 Vol.28 No.9
This experiment was designed to study the effect of carbohydrate sources with some different processes on the utilization of amino acids in the intestine as well as amino acid flow at the abomasum. The carbohydrate sources were cracked corn, whole barley, rolled barley and steamrolled barley, and the 20% of total nitrogen was replaced by the urea. The results obtained are as follows; 1) For the quantities of TAA-N, EAA-N and NEAA-N passing the abomasum, it resulted not significantly in increased for the steamrolled barley diet. The amounts of TAA-N and NEAAN digested postruminally were significantly lower at the feeding of cracked corn diet (P$lt;.05). The mean values for the proportionate disappearance of apparently digested TAA-N, EAAN, and NEAA-N within the intestine for four diets were 79.74±2.53, 79.23±2.40, and 80.62±2.91, respectively. 2) There were no significant differences (P$lt;0.5) for individual amino acid composition (g/100g DM digesta) in abomasum. There were significant differences for the quantities of amino acid passing abomasum on the GLU, PRO, VAL, LEU, PHE, LYS, and ARG at the feeding of steamrolled barley (P$lt;.05). The amounts of each amino acid in abomasal digesta, expressed as a proportion of the amounts ingested for the diets, showed that there were net gains of EAA with exception of cystine and NEAA. 3) Within the intestine of sheep, there was significant loss of amino acids, such as SER, GLU, GLY, ISL, LEU, PHE, LYS (P$lt;.05), and PRO, VAL, and ARG (P$lt;.01). The mean values of the proportionate losses of methionine and phenylalanine were 0.748±0.015, and 0.805±0.032.
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대두박과 요소를 첨가한 옥수수 및 보리급여시 면양의 제1위내 미생물 단백질함성에 관한 연구
윤칠석,이남형,정근기 ( Chil Surk Yoon,Nam Hyung Lee,Keun Ki Jung ) 한국축산학회 1986 한국축산학회지 Vol.28 No.9
This experiment was conducted to examine the effects of carbohydrate source with some different process on the rumen microbial protein synthesis as well as nitrogen flow at the abomasum. The carbohydrate sources were cracked corn, whole barley, rolled barley and steamrolled barley, and the 20% of total nitrogen was replaced by the urea. The used forage was wild grass hay and the feeding ratio of concentrate to forage was about 77: 23. The results obtained are as follows; 1) No significant difference (P$gt;.05) between diets was observed from the mean values of pH and total VFA of rolled and steamrolled barly diets. The molar proportions of propionate, iso-butyrate and butyrate were significant (P$lt;.05). The released ammonia contents for cracked corn and steamrolled barley were lower than those of other diets. 2) The dilution rates of rumen liquid and particulate and rumen volume were not significant between the diets. And the outflow of liquid from the rumen was higher at steamrolled barley by 284㎖/hr. 3) Flow of OM at the abomasum and the faeces resulted in a little decrease when sheep was fed corn diet. There was a significant difference for apparent OM digestibility (P$lt;.05). 4) The nitrogen passing abomasum (P$lt;.05) and NAN at abomasum were increased for the steamrolled barley diet. The ratio of bacterial N to NAN at abomasum was 0.7980, 0.7059, 0.7612 and 0.7323 for the cracked corn, whole barley, rolled barley and steamrolled barley, respectively. The efficiencies of microbial protein synthesis (g N/㎏ OMTDR) microbial were 25.01, 24.04, 24.90, and 28.41 g-N, respectively.
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李順福,尹七石,鄭槿基,韓在淑,鄭在洪 영남대학교 자원문제연구소 1987 資源問題硏究 Vol.6 No.-
This experiment was undertaken to determine the effect of feeding crude soybean lecithin and crude mutton fat on the chemical composition and long-chain fatty acid contents of broiler carcasses. The level of each lipid addition was O(control), 3 and 6%, and the rations were prepared to obtain isoproteineous and isocaloric formulation. The rations were fed to broilers for a period of 8 weeks. The content of crude protein in males and of crude fat in females was higher as compared to the content in females and males, respectively, although no significant difference was observed in carcass composition by all treatments. With ages, the crude protein content tended to be increased by all treatments, and also the crude fat content was increased markedly except the crude soybean lecithin. The linoleic acid and linolenic acid in carcass was significantly accumulated and the oleic acid was decreased by the crude soybean lecithin treatment. However, the myristic acid, stearic acid, and oleic acid was markedly increased by the crude mutton fat treatment. The fatty acid composition between sex did not show consistent influences by the treatments.
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