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맹원재,Maeng, Won-Jae 한국과학기술단체총연합회 1996 과학과 기술 Vol.29 No.10
지난 7월23일부터 3일간 미국 남다코타주의 래피드시에서 열린 '제88차 미국 축산학회'는 각국에서 1천7백여명의 회원과 대학원생들이 참석해 성황을 이루었다. 이번 학회에 참석하고 돌아온 건국대 맹원재교수의 참관기를 싣는다.
조사료의 발효율 및 발효속도 측정 3 . 옥수수대와 옥수수 속대
맹원재,정태영 ( Won J . Maeng,Tae Y . Chung ) 한국축산학회 1981 한국축산학회지 Vol.23 No.6
Chemical composition, amount of potentially digestible dry matter (DM), cell wall constituents (CWC), acid detergent fiber (ADF) and cellulose, and fermentation rates of corn stover and corn cob were estimated in in vitro methods. Corn cob had higher CWC but lower lignin content than corn stover. Both potentially digestible fractions and fermentation rates were much higher in corn cob than in corn stover. Potentially digestible dry matter, CWC, ADF and cellulose of corn stover were 68.8%, 57.1 %, 48.1 % and 63.8% and that of corn cob were 80.5%, 72.6%, 59.4% and 80.1%, respectively. Fermentation rate (0 - 72 hours) of dry matter, CWC, ADF and cellulose of corn stover were 0.3267, 0.02695, 0.01715 and 0.03842 hr^(-1) and that of corn cob were 0.03134, 0.03167, 0.04413 and 0.03848 hr^(-1), respectively, but the fermentation rate of potentially digestible fractions were not much difference between two roughages.
맹원재 한국축산학회 1986 한국축산학회지 Vol.28 No.5
At the year of 2000, average GNP per capita year will exceed 45,000 and comsumptions of rice, barley and potatoes which expect to self-sufficiency in Korea will be on the decrease, and consumptions of wheat and beans which rely upon importation will be on the increase, thus the total food self-sufficiency will turn serious in future. Average consumption of rice per capita/year was 129.8㎏ in 1984 and will decrease in 104.6㎏ which is 19.4% less in 2000, but average consumption of wheat and beans were 43.0㎏ and 24.7㎏ in 1984 and will increase 38.4% and 149.5%, respectively in 2000. A rapid increases of animal product consumption will give rise to increase importation of feed grains which are heavily dependant upon from foreign supply. Meat consumption per capita/year was 13.9㎏ in 1984 and will be 30.0㎏ in 2000 which is 2.2 times higher than that of 1984. Egg and market milk consumption were 6.7㎏ and 20.5㎏ at present and expect to increase in 11.4㎏ and 134.0㎏ respectively, in 2000. Vegetables and fruit consumption per capita/year were 102.8㎏ and 22.5㎏ in 1984 and expect to increase in 377.9㎏ and 63.4㎏, respectively in 2000. Of the proper energy supply of 2,680Kcal per capita/day, 61% will be supplied with food grains and 18.4% with animal products, and of the proper protein supply of 82g per capita/day, 48.8% will be supplied with food grains and 34.1% with animal products in 2000 year. It is strongly suggested that maximum utilization of our own domestic food resources and development of our own food consumption patterns are important.
맹원재 건국대학교 동물자원연구센터 1990 국제 심포지움 Vol.- No.1
Studies should be focused on development and entention of feed resourse, improved digestion and absorption of feed nutrients, enhanced feed utilization and production efficiency through the bodily metabolic control of nutrients, and quality improvement of animal products high in consumer's prevention of the environment pollution caused by modern intensive livestock production system. The development and entension of feed resources may include efficient utilization of agricultural by-products, feed value enhancements, and efficient production of single cell protein such as algae, yeast and bacteria. Techniques for the improved digestion and absorption of feed nutrients may be proper processing of feed grains, development of blending technology, manipulation of rumen fermentation patterns and prevalence of a variety of additives, Modern biotechnological engineering can be applied for improved quality of feed, elimination of potentially harmful residues, improved digestion of single and non-structural carbohydrate, recombination of various digestive enzymes, and manipulation of rumen microbial species an population. Bovine somatotropin produced by modern genetic engineering makes possible the increased productivity through the metabolic control. Also, it should be stressed that animal biomass, which is a major pollutant in water quality, can be reutilized as feed, energy through biogass production, and plant nutrients. Finally, high technology of feeding is required for the development of animal products high is consumer 5 preference.
사료자원 개발에 관한 연구 1 . 보리짚의 사료가치개선
맹원재,윤광로,신형태 ( Won J . Maeng,Kwang R . Yun,Hyung T . Shin ) 한국축산학회 1979 한국축산학회지 Vol.21 No.2
The most effective chemicals on a weight basis in increasing in vitro dry matter digestibility of barley straw were NaOH followed by KOH and N₂CO₃, and Ca(OH)₂ or NH₄OH was least effective. The in vitro dry matter digestibility of barley straw increased with increasing concentration of chemicals, but the response of Ca(OH)₂ and NH₄OH treatment were very small extent. Increasing temperature increased significantly the digestibility of barley straw except Ca(OH)₂ which slightly decreased the digestibility of barley straw. The solubility of barley straw increased and cell wall constituent of barley straw decreased by increasing concentration of NaOH, but acid detergent fiber, cellulose and lignin content of barley straw were not changed The moisture content of barley straw which was treated with 5 % NaOH markedly influenced on the solubility and digestibility of barley straw. The solubility and in vitro dry matter digestibility of barley straw increased by increasing moisture content.