• Journal of Animal Science and Technology
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• v.47 no.6
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• pp.1081-1086
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• 2005

This study was conducted to investigate the effect of mixture types which consist of different species on the dry matter(DM) yield, botanical composition and forage quality. The experimental design includes three mixture types: Conventional mixtures(orchardgrass 50% + tall fescue 20% + perennial ryegrass 10% + Kentucky bluegrass 10% + white clover 10%), complex mixtures(orchardgrass 40% + tall fescue 20% + perennial ryegrass 10% + Kentucky bluegrass 10% + redtop 10% + alfalfa 5% + red clover 5%) and simple mixtures(orchardgrass 80% + red clover 20%). The DM yield was higher in conventional mixtures(13,070kg/ha) than in other mixtures(p<0.05). In the chemical composition and dry matter digestibility, there was significant difference among mixtures. Crude protein content and dry matter digestibility were higher in complex mixtures than in other mixtures(p<0.05). But, the content of fibrous constituents was higher in conventional mixtures than in other mixtures. The yield of crude protein dry matter(CPDM) and digestible dry matter(DDM) were higher in complex mixtures than in other mixtures. In this experiment, DM yields and quality of mixture types were observed significant difference. therefore, the complex mixtures which combined various species were more effective in enhancing the dry matter digestibility(DMD) and digestible dry matter(DDM) yield.

• Journal of The Korean Society of Grassland and Forage Science
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• v.18 no.4
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• pp.337-344
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• 1998

This study was conducted to find out the vegetational succession in abandoned hilly pasture, in Yeoju, Kyonggi Province from April, 1993 to October, 1996. The experiment was arranged as vegetation survey (Pflanzenaufuahme) with two different pastures((1) with forkcrane planed pasture and (2) forest pasture). After the abandoned management of pasture, the botanical composition of planed pasture and forest pasture was greatly changed into the type of natural vegetation in the first year and in the second years, respectively. The biomass of life forms of hemicryptophytes, geophytes and chamaephytes was greatly decreased, on the other hand, that of therophytes and nanophanerophytes after abandoned management of planed and forest pasture in three years was slightly increased than those of the vegetation with pasture management. The similarity coefficients among vegetation groups during the survey were greatly affected by botanical composition. The clustering analysis was showed that the communities of relatively similar botanical composition were grouped closely, and the other communities were clustered farther to the same group although the degree of similarity between communities was low. The communities of hilly pasture after abandoned management were gradually successive into the type of natural grassland or forest community in three years.

• Proceedings of the Korean Society of Grassland Science Conference
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• 2001.06a
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• pp.98.2-99
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• 2001

• Proceedings of the Korean Society of Crop Science Conference
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• 2018.10a
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• pp.189-189
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• 2018

• Journal of The Korean Society of Grassland and Forage Science
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• v.24 no.4
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• pp.293-300
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• 2004

This study was carried out to investigate the ecological behaviour forage value and similarity among the plant communities of the grazing pasture near Witzenhausen in middle part of Germany. Sixteen plant communities of the different grazing pasture were mostly the Molinio-Arrhenatheretea and Festuco-Brometea, and those were named the class of plant sociological nomenclature. The ecological behaviour and forage value of the communities except mesobromion(half dry grassland community) were relatively good for forage production. The correlation coefficient between class No. 14 and 12 of plant communities was highest, and the similarity among the communities were greatly affected by botanical composition. The resemblance measure of the cluster-analysis by complete-linkage-method for the similarity among plant communities was better the euclidean distance than those of others. The clustering analysis showed that the communities of relatively similar botanical composition were closely grouped.

• Journal of The Korean Society of Grassland and Forage Science
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• v.12 no.3
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• pp.116-121
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• 1992

지난 20년간 방목 초지관리에 관해 국내 대학과 연구기관에서 발표된 성적을 간략히 고찰해 보는 것은 지금까지의 시험연구를 종합정리하고 앞으로의 연구방향을 제시하는데 나름대로 커다란 의미를 부여할 수 있을 것이다. 채초관리에 있어서는 그간 괄목할만한 성과가 거양되었으나 방목관리분야에 관한 시험연구는 전반적인 체계없이 단편적인 결과보고에 치우친 감이 많다. 초지의 방목관리와 관련되어 발표된 주요 연구로는 예취와 방목이용비교, 초기 방목관리, 방목시기, 방목강도, 휴목기간, 시비관리, 임간방목지 관리, 방목체계 확립 이용방법과 가축생산성, 혼파조합과 가축생산성, 초지 형태와 가축생산성 등이 있다. 최근 노동력 부족과 인건비 상승 및 수입개방 등 국내외적인 어려운 여건으로 볼 때 초지관리의 연구목표는 생력관리와 생산비 절감에 두어져야 하며, 특히 앞으로의 초지개발이 산지에서 이루어지고 우리나라 산지의 특수성에 미루어 방목관리 이용에 관해서는 다각적인 연구검토가 요망된다. 앞으로의 연구과제로서는 가족 노동중심의 방목관리, 농가규모의 적정방목시스템, 방목지에서의 적정 질소시비수준, 경사지 방목시 유지년한 연장과 토양유실 방지, 가축 분뇨의 초지환원과 환경오염 방지, 임간지에서 목초와 토양 및 나무피해와 방목효율증진, 전기목책 등 간이목책시설 및 기타 초지생산과 방목가축 생산 효율 증진방안 등을 들 수 있다.

• Journal of The Korean Society of Grassland and Forage Science
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• v.12 no.3
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• pp.48-55
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• 1992

자연초원(natural grassland)은 연간 강수량이 $250\sim1000mm$, 기온이 $0\sim26^{\circ}C$인 지역에서 형성되는 기후극상의 식생으로써 초본식물, 특히 벼과식물이 우점되어 있다. 이 자연초원은 세계에 널리 분포되어 있는데 지역에 따라 온대초원 열대초원, steppe, prairie, pampa등으로, 식물의 초고에 따라 장초형 초원 단초형초원으로 분류한다. 한국에는 연간 강수량이 많고 연평균기온이 높아서 기후 극상의 자연초원은 성립되지 못하고 식생천이의 도중상으로 소규모의 초본식물군락이 나타난다. 이들은 주로 방치된 경작지나 경작지주변의 인간간섭이 많은곳, 해수나 강물의 영향으로 나무가 생장할 수 없는 곳에 식생천이의 도중상으로 나타나거나, 산림이 산불이나 벌목으로 파괴된 곳에서 제2차천이의 과정으로 초본식물군락이 출현하는데 이것을 야초지(native grassland)라고 한다. 특히 야초지에 가축을 사육할 목적으로 목초를 재배하여 이용할 때는 초지라고 한다. 한국의 야초지식생을 구성하는 주요 우점초종은 억새, 새, 솔새, 잔디, 갈대, 쑥 등이며 건조하고 기온이 높은 여름에는 C-4형 식물이, 수분이 많고 서늘한 봄과 가을에는 C-3형 식물이 높은 생산성을 나타낸다. 야초지는 지표면을 피복하여 바람이나 빗물에 의한 토양침식을 방지할 뿐만아니라 초식동물의 먹이를 생산하고 자연경관을 아름답게 가꾸어 주는 중요한 역활을 하고 있으나 공장부지 주택지 농업용지등으로 개발되어 없어지고 관리가 이루어지지 않아 황폐화 되고 있다. 야초지를 효과적으로 보전하고 이용하기 위해서는 생장이 빠르고 생산성이 높은 우수한 목초를 재배하는 것이 바람직한데 그 방법으로는 겉뿌림초지조성법, 제경법, 시비법이 이용된다.

• Proceedings of the Korean Society of Grassland Science Conference
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• 1999.06a
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• pp.80-80
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• 1999

본 연구는 목초지 및 야초지에 자생하는 주요초종에 대해 생태적 반응(생태가)를 부여하여 식생구성에 의한 초지의 토양 환경생태를 평가하는데 기여코자 하였다. 각 초종에 대한 생태가는 수분가 1-12, 토양반응가 및 질소가를 각각 1-9 등급으로 구분하였으며 먼저 우리나라의 초지 및 산지초지에서 발생빈도가 높은 141 초종에 대해서 생태가를 부여하였다.(중략)

• Journal of The Korean Society of Grassland and Forage Science
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• v.23 no.2
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• pp.129-134
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• 2003

This study was conducted to investigate the effect of tall type mixtures(TM) and tall + short type mixtures(TSM) on nutritive utilization. DM intake, digestibility and utilization of nitrogen and energy of herbages from pastures by Korean native goats were determined. This experiment was conducted by total collection method in laboratory, 2000. The experimental herbage included two treatments: Tall type mixtures(orchardgrass, Potomac 40+tall fescue, Fawn 20+Festulolium braunii, Paulita 10+perennial ryegrass. Reveille 10+timothy, Climax 10+red clover, Kenblue 5+alfalfa, Vernal 5%), Tall+short type mixtures {orchardgrass, Potomac 40+tall fescue, Fawn 20+Kentucky bluegrass, New port(turf type) 10+redtop, Barricuda(turf type) 10+perennial ryegrass, Palmer III(turf type) 10+red fescue, Flyer II(turf type) 5+white clover, Regal 5%}. The voluntary dry matter(DM) intake of Korean native goats fed with herbages from tall+short type mixtures(TSM) was slightly higher than that of tall type mixtures(TM), but no difference was observed between TSM and TM(p > 0.05). The digestibility of DM, neutral detergent fiber, cellular contents and acid detergent fiber of herbage from TSM was slightly higher than that of TM, but no difference was detected between TSM and TM(p > 0.05). The utilization of nitrogen and energy by Korean native goats did not showed any difference in herbages from TSM and TM(p > 0.05). In conclusion, the herbage utilization by Korean native goats did not showed any significant difference. Thus, there is a possibility that turf grasses in mixtures can be used as a forage sources.

• Journal of The Korean Society of Grassland and Forage Science
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• v.25 no.3
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• pp.185-190
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• 2005

The objective of this experiment was to compare the dry matter intake, nutrients digestibility and nitrogen and energy utilization of herbages from mixtures types; conventional mixtures(orchardgrass 50+ tall fescue 20+perennial ryegrass 10+Kentucky bluegrass 10+white clover $10\%$), complex mixtures (orchardgrass 40+ tall fescue 20+perennial ryegrass 10+Kentucky bluegrass 10+redtop 10+alfalfa 5+red clover $5\%$) and simple mixtures(orchardgrass 80+red clover $20\%$) by Korean native goats. This experiment was conducted by total collection method in laboratory, 2000. The voluntary DM intake per body weight was slightly higher f3r complex mixtures (30.2g) than those of other mixtures. but there was no significant difference. The digestibility of dry matter and cellular constituents were slightly higher for complex mixtures than those of other mixtures (p<0.05), but NDF and ADF digestibilities did not differ among mixtures. The retained nitrogen percent (apparently biological value) was slightly higher fer complex mixtures $(55.1\%)$ than those of other mixtures, but there was no significant difference among mixtures. Apparently retained digestible energy was slightly higher for complex mixtures $(60.2\%)$ than those of other mixtures (p<0.05). Based on the results, the nitrogen and energy utilization of herbage by Korean native goats were slightly higher for complex mixtures than those of other mixtures.