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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 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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녹색성장정책에 대한 인지 및 행태 : 대경권 사례를 중심으로
윤칠석 한국자치행정학회 2012 한국자치행정학보 Vol.26 No.1
본 연구는 대경권을 사례지역으로 환경문제와 녹색성장정책에 대한 시민들의 인지 및 친환경적 행태분석을 기반으로 정책적 시사점을 도출해 보고자 시도되었다. 주된 자료는 대경권의 일반시민을 대상으로 실시한 설문조사의 결과이다. 환경문제 관심도는 친환경적 실천행태에 정(+)의 영향을 미치는 것으로 나타났다. 표본 특성으로 보면, 여성은 남성에 비해 환경에 대한 관심도와 인지도는 낮으나 실천적 참여는 높게 나타났다. 학력별로는 대학생들의 낮은 관심도와 참여행태가 특징적이었으며, 연령과 소득수준이 높을수록 환경친화적 인식과 행태도 함께 높아지고 있다. 환경정책 및 계획 수립을 위한 정책시사점으로, 환경문제 일반에 대한 관심도 제고를 위해 대학생을 포함한 20대 연령층에 대한 체계적 접근과 녹색성장개념에 대한 올바른 이해와 인지도 제고를 위한 노력이 필요하다. 환경문제와 녹색성장에 대한 높은 관심도와 긍정적 평가를 친환경적 행태로 연계할 수 있는 제도적 장치의 마련이 요구되며, NGO·NPO 등 시민들의 조직적 환경활동 참여 활성화가 필요하다. 또한 구성원별 사회경제적 특성에 기반한 대응방안 마련과 함께 중앙정부와 지자체의 환경정책적 리더십이 요구된다.
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볏짚 - 계분 발효사료 급여시 비유효과에 미치는 영향 및 발효사료의 안전성에 관한 연구
윤칠석,박전홍,오태광,이남형,김춘수,지설하,오대균,김준식 ( C . S . Yoon,J . H . Park,T . K . Oh,N . H . Lee,Chu S . Kim,S . H . Chee,D . K . Ohh,J . S . Kim ) 한국축산학회 1985 한국축산학회지 Vol.27 No.8
This experiment was carried out to evaluate the effects of feeding straw-manure silage compared with corn silage, and were consisted of trial I by Holstein cows and trial II by sheep with change-over feeding. And trial II was used to evaluate the digestibility and ruminal characteristics. The ratio of formula feed to each silage during experimental period was maintained at 40: 60 (w/w) as DM basis. Data from trial I on corn and straw-manure silage group, respectively, were; daily milk yield 17.23, 17.05㎏; milk fat 4.06, 4.19%; milk protein 3.89, 3.92%; milk lactose 5.27, 5.17%; SNF 10.36, 10.38%. These values were not significantly different between treatments. The digestibility of ration components on trial II showed that the digestibility of proximate composition of corn silage group tended to be slightly increased. But the fibrous matetial digestibility of straw-manure silage showed more increased results (p$lt;.05). Ruminal parameters on pH and VFA concentration were similar with two silage group. However, straw-manure silage resulted in stepwise increase in propionate and valerate throughout the sampling time. Blood parameters and parasites were observed to elucidate the possible harzardness of straw-manure silage feeding in dairy cattle. No difference was observed in PCV, Hb, plasma prote in, and BUN. Cholesterol and ALT were appeared slightly high value in straw-manure silage feeding group, however, plasma glucose was neverse. Nematodes survived up to 40 fermentaton days, and mites up to 30 days. Protozoa died within 10 fermentation days.
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