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정광화,김원호,김맹중,서성,최기춘,조영무,김영근,Jeong, K.H.,Kim, W.H,Kim, M.J.,Seo, S.,Choi, G.C.,Cho, Y.M.,Kim, Y.K. 한국축산환경학회 2000 축산시설환경학회지 Vol.6 No.2
In general, livestock wastewater consists of many pollutants such as nitrogen, phosphorus, carbonic compounds and inorganic substances. Most carbonic and organic compounds are sufficiently removed by conventional secondary processes, but nitrogen, phosphorus and soluble inorganic compounds are little removed by traditional clarification process. These remained substances in wastewater, for instances, phosphorus and nitrogen are efficiently eliminated by advanced wastewater treatment or botanical removing process. Concentrations of $BOD_s$, SS, T-N and T-P in influent livestock wastewater used in this study were 126mg/l, 115mg/l, 45mg/l and 13mg/l, respectively. The hydraulic retention time(HRT) of wastewater was about 10 days in the pond packed with aquatic plants. A water-hyacinth and a water-dropwort were used as an experimental stuff plant. The removal ratios of nitrogen was 44.3% for the water-hyacinth and 40.2% for the water-dropwort. The removal efficiency of phosphorus in experimental ponds reached by 57.9% for the water-hyacinth and 58.5% for the water-dropwort for 10 days, respectively. Removal ratios of BODs and SS of livestock wastewater for 10 days were reached by 80.1%, 91.0% for he water-hyacinth, respectively. At the same condition, the removal ratios of BODs and SS were reached by 75.0%, 87.6% for the water-dropwort, respectively.
중부 평야지에서 사일리지용 옥수수 품종 선발에 관한 연구 - 파종시기가 사일리지용 옥수수의 생육특성 및 수량에 미치는 영향 -
김원호,김원영,김영진,한학석,김준식,김맹중 ( W . H . Kim,Y . W . Kim,Y . J . Kim,H . S . Han,J . S . Kim,M . J . Kim ) 한국축산학회 1998 한국축산학회지 Vol.40 No.1
This experiment was conducted at theForage Research Farm of the Beef and Dairy Cattle Division, National Livestock Research Institute, Songhwan in 1992 and 1995 to investigate the effects of planting time (April 15, May 11, June 5) on the growth and yield of silage com(Zea mat`s L.). In the plant height, P3144W and DK729 were taller than the others, as 301.6, and 296.3cm, respectively, and P3282 was the shortest as 247.7㎝ at the first planting time. P3144W and DK729 were taller than the others, as 303.6㎝, 281.7㎝, respectively, and P3282 was the shortest as 249.6㎝ at the second planting time. P3144W was the tallest as 276.9㎝. DK689 was the shortest as 246.1㎝ at the third planting time. The ear heights of P3144W and P3282 were 137.3 and 132.7㎝, respectively, and Suweon 19 was the shortest as 116.4㎝ at the first planting time. Those of P3144W and P3282 were as 135.9, 134.4㎝, respectively, and Suwoen 19 was the shortest as 112.1㎝ at the second planting time. P3144W was the tallest as 111.0㎝ and Suweon 19 was the shortest as 94.2㎝ at the third planting time. In the dry matter yield per ha, P3352, DK729 and P3144W were higher than the others as 18,957, 18,840, 18,743㎏, respectively, and P3282 was the lowest as 13,863㎏ at the first planting time. 64743 and P3352 were 18,183 and 17,874㎏, respectively, and Suwoen 19 was the lowest as 15,007㎏ at the second planting time. P3144W was the highest as 19,112㎏ and Suwnen 19 was the lowest as 14,793㎏ at the third planting time. The TDN yield per ha, of P3352, P3144W and DK729 were 13,552, 13,281 and 13,252㎏, respectively, and P3282 was the lowest as 9,793㎏ at the first planting time. 64743 and P3352 were higher than the others as 13,149 and 13,009kg, respectively, and Suwoen 19 was the lowest as 10,872㎏ at the second planting time. P3144W was the highest as 13,521㎏ and Suwven 19 was the lowest as 10,392㎏ at the third planting time.
임용우(Y. W. Rim),김기용(K. Y. Kim),김맹중(M. J. Kim),성병렬(B. R. Sung),임영철(Y. C. Lim),정의수(E. S. Chung),신홍균(H. K. Shin),김용선(Y. S. Kim) 한국잡초학회·한국잔디학회 2003 Weed & Turfgrass Science Vol.17 No.2,3
2001년 수집된 한국잔디 133계통들 중에서 우수한 계통들을 선발하기위하여 밀도(품질),<br/> 피복성, 녹색기간, 내병성, 출수유무(종자수) 등의 주요특성과 그 외 생육특성들이 조사되었다. 생육특성이 우수한 6계통이 선발되었으며 그 결과를 요약하면 다음과 같다.<br/> 수집된 133계통들 중에서 가장 녹색기간이긴 계통은 J01067으로 11월초까지 녹색도를 유지하였다. J01106 및 J01129 계통들은 엽폭이 각각 1.5mm 및 2mm 정도로 매우 좁으며, 밀도가 높고, 피복성도 좋은 것으로 나타났으며, 내병성도 강하였다. J01122 계통은 들잔디 계통들 중에서 유일하게 내병성이 강한 계통으로 선발되었다. J01128 계통은 엽폭이 3.2mm로 중엽에 속하였으며, 대비품종인 Sunburst 와 비슷하였다. 이 계통의 경우도J01106, J01129 계통들과 마찬가지로 밀도가 높고 내병성이 강한 것으로 나타났다.<br/> 수집된 133계통들의 형태적 분류를 위하여 5가지의 생육특성을 사용하여 크게 세가지 군집<br/> 으로 분류하였으며, 그 중에서 대비품종으로 사용된 6품종들과 선발된 우수 6계통의 분류는<br/> 다음과 같다. 제 1군집에 속하는 품종 및 계통은 Belare, Meyer, 안양중지(Anyang-jungji), J01067, J01112 등이 포함되었으며, 제 2군집으로는 S-94, J01105가 포함되었고, 제 3군집에는 Sunburst, 건희(Konhee), J01106, J01128, J01129 등이 포함되었다. Growth characteristics such as density(quality), covering speed, green period, disease resistance, heading existence(number of seeds) and other characteristics were examined for selection of superior lines among the 133 zoysiagrass lines collected in 2001. Six superior lines were selected and the results were summarized as follows.<br/> Superior line, J01067 was longest for green period among the 133 zoysiagrasses and stayed green until the beginning of November. Leaf width of J01106 and J01129 lines was very narrow as 1.5㎜ and 2㎜, respectively and superior for density(quality), covering speed and disease resistance. J01122 line was selected for strongest disease resistance among the lines of Zoysia japonica. Leaf width of J01128 was 3.2㎜ showing midium type and similar to standard cultivar, Sunburst. This line also showed higher density and strong disease resistance like J01106 and J01129.<br/> Five growth characteristics for morphological classification of 133 zoysiagrass lines<br/> was used and divided into 3 cluster groups. Of 133 lines, 6 standard cultivars and 6 superior lines were classified as follows. First cluster group contained Belare, Meyer, Anyang-jungji, J01067, J01122, and second group contained S-94 and J01105, and third group contained Sunburst, Konhee, J01106, J01128 and J01129.<br/> <br/>
흑염소의 거세 및 사향선제거가 성장 및 육질에 미치는 영향
최순호,김맹중,조영무,채현석,이지웅,김영근 한국동물자원과학회 2000 한국축산학회지 Vol.42 No.6
This study was conducted to examine the effect of castration and searing of musk gland on growth performance and meat quality of Korean native goats. Thirty-two males of Korean native goats were divided into four groups ; castration, searing of musk gland, both castration and searing of musk gland, and control, respectively. Daily gain of Korean native goats was 54.7g for searing of musk gland, 52.8g for control, and 51.8g for castration, respectively. These results trended to grow faster than those treated with castration and searing of musk gland (38.7g). Feed intakes(㎏/day) were 0.3㎏ for concentrated feed and 0.5㎏ for hay, respectively. Meat percentage was 62.7% for control and 61.7% for searing of musk gland. The results were significantly greater than those with castration and castration and searing of musk gland (P $lt; 0.05). Fat percentage of carcass for castration to be 11.1% was significantly greater than those for control (P $lt; 0.05). The results of sensory evaluation for physical properties of meat trended to be better for castration and castration and searing of musk gland than those for control.