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조릿대 사일리지 급여가 육성기 흑염소 일당증체량, 소화율 및 질소축적에 미치는 영향
정상욱,장세영,윤영식,문상호 한국초지조사료학회 2021 한국초지조사료학회지 Vol.41 No.1
This study was conducted to evaluate the forage productivity and feed value of Sasa borealis (S. borealis) using growing black goats(S. borealis) in order to improve the utilization of S. borealis and to help mitigate the problem of reduced plant species diversity caused by S. borealis in Hanlla Mountain. One control and three treatments were made by the level of addition of S. borealis silage to the TMR feed. T1(10%), T2(20%), and T3(30%) treatments showed more daily weight gains than control group. Feed conversion ratio of T2 is 4.4g, which is significantly lower than control(P<0.05). The nitrogen retention in the control, which had relatively high dry matter intake, was 12.5g, which was significantly higher than that of T3. Sasa. borealis silage is considered to be able to use as a forage source for black goats, and if it is fed in an appropriate amount, it is considered that it will help improve livestock productivity, such as weight gain and feed conversion ratio.
정상욱,성혜진,윤영식,이가을,오영균,백열창,이슬,문상호,Chung, Sang Uk,Seong, Hye Jin,Yun, Yeong Sik,Lee, Ga Eul,Oh, Young Kyoon,Baek, Youl Chang,Lee, Seul,Moon, Sang Ho 한국초지조사료학회 2018 한국초지조사료학회지 Vol.38 No.2
본 연구는 제주조릿대의 사초생산성과 사료가치평가를 진행하여 조릿대의 활용도를 높임과 동시에 현재 한라산에서 발생하고 있는 조릿대로 인한 식물종 다양성 감소문제를 완화하는데 도움이 되고자 실시하였다. 조릿대의 사초생산성은 실험결과 5월과 6월기간에 비교적 우수한 재생력을 보였으나, 예취가 반복 될수록 재생능력이 감소하여 생산성이 떨어지는 경향을 나타내었다. 조릿대의 일반성분 분석결과 조단백질은 가을철 함량보다 봄철에서 비교적 높은 함량을 보였으며 6월에서 $8.64{\pm}0.20%$로 다른 기간에 비해 비교적 높은 함량을 나타내었으며 가장 낮은 NDF, ADF의 함량은 6월에서 각각 $77.90{\pm}0.25%$, $42.33{\pm}0.49%$로 나타나 섬유소 함량이 매우 높은 것으로 판단된다. 조릿대는 NDF와 ADF의 함량은 높으나, 볏짚에 비해 조단백질 함량은 비교적 높은 것으로 판단되며 가축의 특성에 맞추어 급여한다면 이용성이 있을 것으로 여겨진다. 조릿대를 사료원으로 이용하기 위해서는 섬유소 분해능력이 좋은 흑염소 같은 가축 또는, 조릿대에 대한 기호성이 우수하고, 소화율이 비교적 우수한 말에게 급여하는 것이 효율적일 것으로 여겨진다. 조릿대의 사료화를 위해서는 보다 다양한 축종을 대상으로 추가 연구가 진행되어야 할것으로 판단된다. This study was conducted to evaluate the forage production and feed value of Sasa borealis (S. borealis) in Jeju Island in order to improve the utilization of Sasa borealis and to help mitigate the problem of reduced plant species diversity caused by S. borealis in Hanlla Mountain. To investigate the forage production, three quadrat structures were installed in the S. borealis natural community in the middle part of Hanlla Mountain. From May to October 2017, S. borealis in quadrats was cut at a fixed time of each month, and then forage production and regenerated acidity per kg/ha were evaluated. For the evaluation of feed value, compositional analysis was performed on the monthly samples. In vitro digestion experiments were carried out using cannula mounted Hanwoo. In vitro neutral detergent fiber digestibility(IVNDFD) and in vitro acid detergent fiber digestibility(IVADFD) were measured after the experiment. Forage production of S. borealis showed relatively good regeneration ability in May and June, but the regeneration ability decreased as the cutting was repeated. In order to use S. borealis as a forage, it is considered efficient to feed black goats with good fiber decomposition or horses good palatability to S. borealis and relatively good digestibility.
국내 표고(Lentinula edodes) 주산지인 장흥지역에 적합한 국산 원목품종 선발
정상욱,장은경,장혜미,하늘이,최선규,반승언,Jeong, Sang-Wook,Jang, Eun-Kyoung,Jang, Hye-Mi,Ha, Neul-I,Choi, Sun-Gyu,Ban, Seung-Eon 한국버섯학회 2021 한국버섯학회지 Vol.19 No.4
본 연구에서는 원목재배용 표고(Lentinula edodes) 국산 품종에 대한 장흥지역에서 적합한 표고품종 선발을 위해 국내산 총 5개(천백고, 수향고, 백화향, 풍년고, 산조303호) 품종과 일본산 2개(모리290, 모리유지로) 품종을 선택하여 적합품종 선발을 위해 재배시험을 실시하였다. 생산량 조사결과 산조303호가 40.9 kg으로 모리290 39.2 kg, 모리유지로 37.7 kg 보다 우수한 생산량을 보였다. 표고의 품질은 백화향이 갓이 반구형으로 형태가 우수하였으며, 화고형으로 발생하는 특징을 가진 것으로 확인되었다. 기존 재배중인 일본산 품종과 발생특성이 유사하며 생산량이 우수한 산조303호와 고품질의 표고를 생산하는데 유리한 백화향이 장흥지역에서 적합한 국산 표고품종으로 선발하였다. In this study, to select suitable shiitake strains in Jangheung region for domestic strains of Lentinula edodes for log cultivation, a total of five different Korean strains(Chunbaegko, Sanjo 303ho, Poongnyunko, Baekhwahyang, Soohyangko) and two Japanese strains (Mori 290, Moriyujiro) were selected and a cultivation test was conducted to select suitable strains. As a result of the yield, Sanjo 303ho produced 40.9 kg, which was superior to 39.2 kg for Mori 290 and 37.7 kg for Moriyujiro. As for the quality characteristics, it was confirmed that Baekhwahyang had a hemispherical shape, and high quality fruit bodies. In conclusion, Sanjo 303ho, which has excellent production, and Baekhwahyang, which is advantageous for producing high-quality shiitake, were selected in Jangheung region for domestic strains.
Etiologies and Subtypes of Young Adult Stroke in Korea : Experience in 309 Patients
정상욱 대한뇌졸중학회 1999 Journal of stroke Vol.1 No.1
Background : In general, etiologies of stroke in the young are known to be different from those in older patients and it has been believed to be true also in Korea. However, there have been few studies on Korean and most studies on other races have focused on ischemic stroke. Recently possible differences in etiologies of young adult stroke between specific age groups were suggested. The objective of our study was to clarify the etiologies and subtypes of both ischemic and hemorrhagic strokes in young Korean adults and to analyze the difference of stroke etiologies between the age-specific subgroups. Methods : We retrospectively studied the patients aged 15 to 45 with first ever ischemic or hemorrhagic stroke, who were admitted to Seoul National University Hospital during 5 years. The potential causes of stroke were investigated and classified into 5 subgroups in each type of stroke. Results : Three hundred nine patients were aged 15-45(10.7% of stroke patients with all ages; 189 with cerebral infarctions(CIs) and 120 with intracerebral hemorrhages(ICHs)). The leading cause of CIs was cardioembolism(30.7%), followed by other determined etiologies(28.0%), undetermined etiology(19.0%), large-artery atherosclerosis(13.8%), and small-vessel disease(8.5%). Half of the patients with cardioembolism had rheumatic heart disease. Moyamoya disease comprised one-third of other determined etiologies. In ICHs, the most common cause was hypertension(30.8%) followed by arteriovenous malformation(AVM, 21.7%), unknown etiology(20.0%), other causes(15.8%), and blood dyscrasia(11.7%). Moyamoya disease occupied a majority of other causes(78.9%) and was also the most common cause of PIVH(78.6%), which consisted of 11.7% of ICH. The proportion of each cause in both types of stroke was compared between two age groups(group I; 15-29 years, group II; 30-45 years). The proportions of large-artery atherosclerosis and other determined etiologies in CI(2.2% vs. 17.4% and 46.7% vs. 22.2%, respectively) and those of all the subgroups except other causes in ICH were significantly different between two groups. Conclusions : The proportions of etiologies or subtypes in both types of stroke were presented. Cardioembolism was the leading cause in CIs and hypertension was in ICHs. Our study also suggested that there were differences in the distributions of etiologies according to age in young Korean adults. Therefore, age range should be considered when investigating young stroke patients in Korea. Korean Journal of Stroke 1999;1(1):28~34