• Title/Summary/Keyword: Ryegrass

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Effect of Sugar-Beet Pulp Supplementation on Fiber Degradation of Grass Hay in the Rumen of Goats

  • Masuda, Y.;Kondo, S.;Shimojo, M.;Goto, I.
    • Asian-Australasian Journal of Animal Sciences
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    • v.12 no.2
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    • pp.186-188
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    • 1999
  • This study was conducted to investigate the effects of four levels (0, 10, 20, 40 %) of sugar-beet pulp (SB pulp) supplementation to Italian ryegrass hay (IRG hay) on the fiber degradability of IRG hay in the rumen of goats. The following results were obtained: Degradabilities of DM, NDF, ADF and hemicellulose of IRG hay in the rumen increased significantly (p<0.05) by 10 % level supplementation of SB pulp to IRG hay. This was probably due to the increased numbers (p<0.05) of total viable bacteria, pectin-fermenting, xylan-fermenting and cellulolytic bacteria in the rumen in the increased supply of degradable pectic substances and hemicellulose at 10% level supplementation of SB pulp pectin. In 40% supplementation of SB pulp, ruminal pH was lowered by the fermentation of increased amount of molasses from SB pulp, resulting in the depression of growth of fiber fermenting bacteria and hence the decrease in degradabilities of cell wall fractions. It was suggested from this study that the sugar-beet pulp supplementation to forages at the level of 10% in the total diet increased fiber degradation of forage in the rumen of goats.

Effect of Monensin or Salinomycin Supplementation in a 50% Concentrate Diet on Mineral Utilization of Growing Goats

  • Toharmat, T.;Tanabe, S.;Kume, S.;Kameoka, K.
    • Asian-Australasian Journal of Animal Sciences
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    • v.10 no.1
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    • pp.15-19
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    • 1997
  • An experiment was conducted to clarify the effects of dietary supplementation of monensin or salinomycin on mineral utilization of growing goats. Six goats weighing 10.54 kg initially were randomly assigned to treatments in a replicated $3{\times}3$ Latin square design. Treatments were a basal diet, basal plus 30 ppm monensin and basal plus 20 ppm salinomycin on a DM basis. The basal diet was a mixture of Italian ryegrass wafer, soybean meal, ground maize and $CaCO_3$ with DM proportions of 50, 13.76, 36 and 0.24%, respectively. Each period lasted for 21 days, and the apparent absorption and retention of minerals were measured during the last 7 days of each period. Salinomycin supplementation improved NDF digestibility and plasma glucose. The apparent absorption and retention of Ca, P, Mg, Na and K were not influenced by the treatments. The concentrations of plasma Ca, P, Mg, Na, K and Cl were similar in all treatments. The ionophore supplementation had no significant effect on acid excretion. The results suggest that 30 ppm monensin or 20 ppm salinomycin supplementation is not effective in improving the utilization of Ca, P, Mg, Na and K in growing goats fed a diet composed of the 50% concentrate.

Thermophilic Anaerobic Biodegradability of Agro-industrial Biomasses (농축산바이오매스의 고온 혐기성 생분해도 평가)

  • Heo, Nam-Hyo;Kang, Ho;Jeong, Ji-Hyun;Lee, Seung-Heon
    • 한국신재생에너지학회:학술대회논문집
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    • 2009.11a
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    • pp.514-517
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    • 2009
  • Anaerobic biodegradability(AB), which can be determined with the ultimate methane yield by the decomposition of organic materials, is one of the important parameters for the design and the operation of anaerobic digestion plant. In this study, Biochemical Methane Potential(BMP) test has been carried out to evaluate the methane yield of agro-industrial biomasses such as cattle manure, Italian ryegrass(IRG), Oats, Rye and Barley as the forage crops, Rush, the sludges produced from milling and slaughterhouse wastewater treatment plant(SMWTP, SSWTP). In the condition of thermophilic anaerobic digestion, the ultimate methane yield and anaerobic biodegradability of forage crops ranged from 0.367 to $0.452LCH_4$/gVS of methane yield with AB having the range of about 77.0 to 87.3%. On the other hand, that of other substrate showed low figures compared with the forage crops because of low VS content and C/N ratio. Therefore, the forage crops could be used as a good substrate to produce much more the methane in anaerobic digestion.

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Biochemical Methane Potential of Animal Manure and Cultivated Forage Crops at the Reclaimed Tideland (가축분뇨와 간척지 사료작물의 메탄발생량)

  • Heo, Nam-Hyo;Lee, Seung-Heon;Kim, Byeong-Ki
    • 한국신재생에너지학회:학술대회논문집
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    • 2008.10a
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    • pp.79-82
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    • 2008
  • Anaerobic biodegradability(AB), which can be determined with the ultimate methane yield by the decomposition of organic materials, is one of the important parameters for the design and the operation of anaerobic digestion plant. In this study, Biochemical Methane Potential(BMP) test has been carried out to evaluate the methane yield of animal manures, such as pig and cattle slurries, and different forage crops cultivated at the reclaimed tideland, such as maize, sorghum, barley, rye, Italian ryegrass(IRG), rape, rush and sludge produced from slaughterhouse wastewater treatment plant(SWTP). In the ultimate methane yield of animal manure, that of pig slurry(no used a EM) was 407 $mlCH_4/gVS_{fed}$ higher than 242 $mlCH_4/gVS_{fed}$ of cattle slurry. The ultimate methane yield of spike-crop rye was 442.36 $mlCH_4/gVS_{fed}$ the highest among different forage crops, the other showed the value above a methane yield of 300 $mlCH_4/gVS_{fed}$. The forage crop could be used as a good substrate to improve the methane production in anaerobic co-digestion together with animal manure.

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Effects of Sowing Methods after Herbicide Application on Forage Production and Botanical Composition in the Pasture Dominated Hypochoeris radicata (서양금혼초(Hypochoeris radicata) 우점 초지에서 제초제 처리 및 파종방법이 목초의 수량 및 식생에 미치는 영향)

  • 박남건;고서봉;이종언;진신흠
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.21 no.3
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    • pp.123-128
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    • 2001
  • This study was carried out to determine the effects of sowing methods after herbicide application on botanical composition, forage yield and chemical contents in the pasture dominated Hypochoeris radicata in Jeju area over two years. It was arranged as a randomized block design with five treatrnents(contro1: none, TI : herbicide application, T2 : herbicide application + oversowing, T3 : herbicide application + overdrilling, T4 : herbicide application + cultivation). In the pasture dominated Hypochoeris radicata, the herbicide (dicamba) treatments improved grass rate with orchardgrass and perennial ryegrass by 97%. The DM yield per ha were much higher(p<0.05) in T2(7,152kg), T3(7,608kg) and T4(8,010kg) than that of control. The chemical compositions of grass (% of DM basis) were not different among treatments, but the overdrilling and cultivation treatments tended to increase the forage crude protein(CP). These results indicate that oversowing or overdrilling after herbicide application can efficiently improve botanical compositions and forage productivity in the pasture dominated Hypochoeris radicata. (Key words : Herbicide, Sowing methods, Botanical composition, Forage production)

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A Study on the Revegetation Structural Analysis for Environment Factor of Road Slope (도로비탈면의 환경인자를 고려한 식생구조분석에 관한 연구)

  • Jeon, Gi-Seong
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.7 no.2
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    • pp.12-20
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    • 2004
  • This study was carried out from January 1998 to December 1999 to report the revegetation of cutting-rock slopes and a design standard in the highway cut-slopes. The field data was collected from the 67 sites cutting-rock slopes of highways, local roads, and field test. As the result of analyze, cutting-rock slopes revegetation measures were 16 types. There were Vine planting(3 types), Hydroseeding measures with seed-fertilizer-soil materials(5 types), Vegetaion-base spraying measures(5 types), and Stability measures(3 types). The factors affecting the plant coverage rates of cutting-rock slopes were the slope gradient, the slope width and direction. The plant coverage rate decreases in the condition of steep slope and long slope width and length(height). In addition, the plant coverage rates of the westward and southward were lower than that of the northward and eastward. Most dominant species were Zoysia japonica, Lespedeza cyrtobotrya, Lespedeza cuneata, Rubus crataegifolius, Miscanthus sinensis, Arrundinella hirta, Themeda triandra, and Oenothera odorata. Exotic species were Eragrostis curvula(Weeping lovegrass), Dactylis glomerata Orchardgrass), Lolium perenne(Perennial ryegrass), and Festuca arundinacea(Tall fescue). It is recommended to adjust the proposed factor as environment, topsoil, classification of rock, field condition and characteristic related with revegetation measures on slopes for the presentation of revegetation standard.

Functional Mechanism of Plant Growth Retardation by Bacillus subtilis IJ-31 and Its Allelochemicals

  • Kim, Won-Chan;Rhee, In-Koo
    • Journal of Microbiology and Biotechnology
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    • v.22 no.10
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    • pp.1375-1380
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    • 2012
  • We previously isolated a rhizobacterium (Bacillus subtilis IJ-31) and demonstrated that its associated allelochemicals could indicate plant growth retardation. However, little is known about how the growth of plants is regulated by B. subtilis IJ-31 and its allelochemicals. In this study, we investigated whether plant growth retardation in this relationship occurred through the inhibition of gibberellin (GA) biosynthesis. GA $3{\beta}$-hydroxylase activity was found to be inhibited by B. subtilis IJ-31 and hydrocinnamic acid (HCA), which is one of the allelochemicals produced by B. subtilis IJ-31. Additionally, thin layer chromatography (TLC) demonstrated that B. subtilis IJ-31 culture broth and HCA both inhibit GA $3{\beta}$-hydroxylase (MBP-GA4) activity. The retardation of plants by HCA was then confirmed in vivo and in vitro using a Ryegrass and Arabidopsis growth retardation assay. Furthermore, treatment with either B. subtilis IJ-31 culture extract or its allelochemicals resulted in significant down-regulation of XTR9 gene expression in Arabidopsis. Overall, we identified the functional mechanism of plant growth retardation by B. subtilis IJ-31 and its allelochemicals.

Siccanol: Sesterterpene Isolated from Pathogenic Fungus Drechslera Siccans (식물 병원균 Drechslera siccans로 부터 분리한 세스터테르펜류 Siccanol의 구조)

  • Lim, Chi-Hwan;Miyagawa, Hissahi;Ueno, Tamio;Takenaka, Hideyuki;Sung, Nack-Do
    • Applied Biological Chemistry
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    • v.39 no.3
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    • pp.241-244
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    • 1996
  • A bicyclic sesterterpene from Drechslera siccans was purified and structurally characterized. During the isolation procedure, the toxic component was monitored by the assay using Italian ryegrass (Lolium multiflorum Lam.), one of the host plants of the pathogen. Siccanol (1) named arbitrarily was shown to have a molecular formula of $C_{25}H_{38}_{4}$. Siccanol completely inhibited the root growth of the Italian regrass seedlings at a level of 100 ppm.

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Studies on Seed Mixtures for Slope Revegetation of the Road (도로사면녹화를 위한 식생배합에 관한 연구)

  • 이재필;김남춘;홍성관
    • Journal of the Korean Institute of Landscape Architecture
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    • v.23 no.2
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    • pp.113-123
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    • 1995
  • This study was conducted to find out appropriate rates of seed mixture of both native and foreign plants in order for stabilization of early afforestation and proper vegetation on road slope. The results are summarized as follows: 1. Characteristics of germination : After seeding, 2 weeks for both Lespedeza bicolor and Lespedeza cuneata, and 4 weeks for both Arundinella hirta and Zoysia japonica were needed for vigorous germination, and 1-4 wee17s for 3 cool-season grasses were spent for gradual germination. 2. Plant height : There was no difference between Lespedeza cuneata and Lespedeza bicolor in plant height by 7 treatments. As mixture rates of cool-season grasses were lowered, plant height of Arundinella hirta became longer. Descending order of co81-season grasses for plant height was Tall fescue, Perennial ryegrass and Creeping redfescue. 3. Number of tillers : The number of tillers tended to increase in the experimental plots where competition was low. 4 Ground cover rate : Ground cover rate was the highest in Mixture IV (96.7%) and was fluctuated from 13.3% on Sept. 13 to 45% on Nev. 3 in Mixture III. Descending order of gronud cover rates in 7 treaments was Mixture IV, Mixture III. Mixture II, Mixture Ⅶ, Mixture V, Mixture Ⅵ, Mixture I, and Mixtur III when measured on Oct. 13 5. Visual assessment: High preferences were observed on Mixture IV and Ⅶ In sun the best seed mixtures were Mixture IV and Ⅶ. It meant that (1) either mixture of 70% the native plants with 30% cool-season graaes or (2) mixture of 80% the native plants with 20% cool-season glasses was best for this study.

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Effects of legume mixture on nitrogen fixation and transfer to grasses in spring paddy field

  • Lee, H.
    • Korean Journal of Organic Agriculture
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    • v.19 no.spc
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    • pp.161-164
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    • 2011
  • Nitrogen fixation by legumes can be valuable sources for organic farming. This study was to investigate the effect of different legume mixtures on nitrogen fixation and transfer to grasses on spring paddy field. Three different mixtures were used (rye+hairy vetch, Italian ryegrass+crimson clover, oat+pea) in a randomized complete block design with three replications and sowed in pots with different sowing rate (5:5 rye:hairy vetch,7:3=Italian:crimson, 6:4=oat:pea) on early March. $(^{15}NH_4)SO_4$ solution at. 99.8 atom%$^{15}N$ was applied to the each pot at the rate of 2kg N $ha^{-1}$ on $16^{th}$ April. Forage were harvested at ground level in heading stage and separated into legume and grass. Total N content and $^{15}N$ value were determined using a continuous flow stable isotope ratio mass spectrometry. DM yield of rye+vetch, Italian+crimson and oat+pea were 6,607, 3,213 and 4,312kg/ha, respectively. Proportion of N from fixation was 0.73(rye+vetch), 0.42(Italian+crimson) and 0.93(oat+pea). The percentages of N transfer from legume to grass were from 61% to 24% in different method by treatments and -35% to 21% in isotope dilution method.