• Title, Summary, Keyword: earthworm

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A Study of Treatment of Cattle Manure and Food Waste by Vermicomposting (Vermicomposting에 의한 우분과 음식물쓰레기의 처리에 관한 연구)

  • Jo, Ik-Hwan;Lee, Ju-Sam
    • Korean Journal of Organic Agriculture
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    • v.11 no.4
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    • pp.93-102
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    • 2003
  • This research was made to determine the optimum mixing ratio cattle manure and food waste investigating the effect that gets the growth and reproductive efficiency of earthworm and productivity of earthworm casts at processing process when handled cattle manure and food waste by vermicomposting, in order to establish the treatment system of organic wastes by vermicomposting. Survival ratio of earthworm was highest in the mixing ratio 80~100% : 20~0% of cattle manure and food Waste, and the increasing ratio was highest in cattle manure 100%, and the number of young worms, the weight of young worms and the productivity of earthworm casts in plots more than the mixing ratio 60% of cattle manure were significantly higher than in the other treatment plots(p<0.05). Total nitrogen and carbon contents in earthworm cast were decreased when rearing time of earthworm was increased. Carbon and nitrogen rate(C/N) of earthworm cast in plots more than the mixing ratio 80% of cattle manure was significantly higher than in the other treatment plots(p<0.05). pH in earthworm cast was higher than that in residual matter. The contents of electrolytic conductivity in the higher mixing ratio of food waste were significantly higher than those in the other treatment plots(p<0.05).

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Effect of Earthworm Flour Supplemented Diet on the Liver Damage in CCl4-treated Rats (흰쥐에 있어서 간손상(肝損傷)에 미치는 토룡분(土龍粉) 첨가식이의 영향)

  • 윤종국;반재태;신중규
    • Journal of the East Asian Society of Dietary Life
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    • v.4 no.1
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    • pp.105-112
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    • 1994
  • To evaluate the role of dietary earthworm flour in liver injury by CCl4 treatment, the rats were fed 5% earthworm flour supplemented diet for 53 days and control rats were fed standard diet without earthworm supplementation. Liver damage was induced both in earthworm flour supplemented diet and control groups by two intraperitoneal injections of CCl4 at the level of 0.1$m\ell$/100g body weight(50% in olive oil) at intervals of 16 hours the increasing rate of lover weight/body weight(%) and serum levels of alanine aminotransferase activity to the control group were higher in CCl4-treated rats fed earthworm flour supplemented diet than those fed standard diet. The decreasing rate of hepatic microsomal aniline hydroxylase activity was also higher in rats fed earthworm supplemented rats by the CCl4 treatment, Hepatic glutathione S-transferase activity was sinificantly higher in rats fed earthworm supplemented diet than those fed standard diet. It is concluded that a dietary earthworm flour argument the metabolic rate of CCl in rats.

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Interaction between Earthworm and Dung Beetles on Cattle Dung Decomposition (우분 분해에 대한 지렁이와 소똥구리의 상호작용)

  • Bang, Hea-Son;Na, Young-Eun;Jung, Myung-Pyo;Kim, Myung-Hyun;Han, Min-Su;Kang, Kee-Kyung;Lee, Deog-Bae
    • Korean Journal of Environmental Agriculture
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    • v.28 no.3
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    • pp.238-242
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    • 2009
  • The effect of earthworm and dung beetle on cattle dung pat decomposition was assessed by combining quantification of earthworm density and with or without dung beetle in pats and measurements of the decomposition rate of these pats. Cattle dung decomposition rate was higher in the pots treated with both earthworm and dung beetle than in the pots with either earthworm or beetle alone. After dung beetle and earthworm activity, the growth of oat in earthworm with dung beetle treatment was similar effect with fertilizer treatment. Dung beetle was responsible for dung decomposition until 78% moisture content in the dung, earthworm was responsible for up to 30% moisture of dung, and two group were not shown any activity for decomposition less 30% moisture content of dung. Therefore dung in the different periods could be broken down by each group. The disappearance and conveyance of dung by earthworm and dung beetle was 72% of the initial dung amount. 10.2% of 72% dung was used making brood balls by dung beetle. Earthworm activity was not an impediment on making brood balls by dung beetles. The interaction of earthworm and dung beetle may have a complementary cooperation rather than competition in the same dung pat. Indeed, development of earthworm accelerate to coexist with dung beetles instead without dung beetles. From this result, maximum benefits of the effective earthworm and dung beetle can be achieved, it is needed to preserve population of earthworm and dung beetles in pasture to sustainable agricultural environment.

Effect of Earthworms on Collembola Abundance in Temperate Forest Soil Ecosystem (온대 숲 토양 생태계에서 지렁이가 톡토기류 개체수에 미치는 영향)

  • Lee, Ju-Hyung;Park, Ji-Hyun;Yoo, Ji-Yeon;Han, Su-Hyun;Nam, Bo-Eun;Kim, Jae-Geun
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.13 no.6
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    • pp.97-106
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    • 2010
  • Earthworm, a prominent ecosystem engineer within many terrestrial ecosystems, can exert profound influences on various abiotic/biotic environments through bioturbation processes such as burrowing, casting and mixing of litter and soil. In this study, we investigated how the presence or absence of earthworm (Oligochaeta) can alter the soil physico-chemical conditions and ultimately the distribution and abundance of Collembola which constitutes a large proportion of the soil fauna. During September 2010, soil organisms along with soil samples were collected from randomly installed 20 plots in Mt. Gwan-ak. We examined the differences in the abundance of Collembola among plot samples in respect to the presence/absence of earthworm and soil physico-chemical conditions (i.e., pH, $PO_4^{3-}$, $NO_3^{2-}$, organic matter (OM), electrical conductance and water content). Analysis of soil physico-chemical environment revealed a significantly higher organic matter content and electrical conductance in plots with earthworm compared to plots without earthworm. Abundance of Collembola were not only higher in plots with earthworm than in plots without earthworm, but were also positively correlated with availability of OM present in the environment. The results suggest that positive impacts of earthworm on the abundance of Collembola in this study may have been due to their ability to effectively modify soil physico-chemical conditions favored by Collembola. Such conspicuous influence of earthworm's activity on below-ground community suggests their potential significance in forest restoration or revegetation process.

Modeling and Experimental Validation of Earthworm-like Robot (지렁이 모사 로봇의 모델링 및 실험 검증)

  • Park Suk-Ho;Kim Byung-Kyu;Kwon Ji-Woon
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.30 no.3
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    • pp.287-294
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    • 2006
  • In recent years, capsule endoscope is highlighted for the patient's convenience and the possibility of the application in the small intestine. However, the capsule endoscope has some limitations to get the image of the digestive organ because its movement only depends on the peristaltic motion. In order to solve these problems, locomotion of capsule endoscope is necessary. In this paper, we analyze the locomotive mechanism of earthworm-like robot proposed as locomotive device of capsule endoscope and derive the condition which can Judge the possibility of its mobility using theoretical analysis. Based on a biomechanical modeling and simulation, the critical stroke, that is minimum stroke of the earthworm-like robot to perform motion inside small intestine, is obtained. Also, this derived critical stroke can be validated by the moving test of fabricated earthworm-like robot. Consequently, it is expected that this study can supply useful information to design of earthworm-like robot for mobility of capsule endoscope.

Effects of Earthworm Meal Supplementation on the Performance of Broiler Chickens (사료 내 지렁이 분말의 첨가가 육계의 생산성에 미치는 영향)

  • 손장호;조익환
    • Korean Journal of Organic Agriculture
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    • v.11 no.2
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    • pp.79-89
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    • 2003
  • A study was conducted to investigate the effect of supplementing earthworm meal on the growth performance and nutrient digestibility of feed in broiler chicks. A total of 120 broiler chicks at 7 days of age were fed the experimental diets containing 0%(Control), 0.2% and 0.4% of earthworm meal for 6 weeks. When fed on both starter and finisher diets, the body weight gain and amount of feed intake were significantly higher (P<0.05) in the chicks fed 0.4% of earthworm meal than those fed 0% and 0.2% of earthworm meal. There were no significantly differences in feed. conversion ratio and mortality among the treatments. When fed on both starter and finisher diets, digestibility of dry matter of feed was not affected by the dietary treatment, but crude fat and crude ash digestibilities of feed were tend to increased in chicks fed earthworm meal Digestibility of crude protein of feed in chicks fed 0.4% of earthworm meal was significantly(P<0.05) improved as compared with those in 0.2% or control group. These results indicated that the dietary supplementations of 0.4% earthworm meal were effective in improve digestibility of crude protein of diet resulted improved broiler performance if.. broiler chicks.

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Utilization of Earthworm Cast as a Component of Plant Growth Medium for Tomato (채소용 육묘 상토로서 지렁이분립의 이용)

  • 조익환;전하준;이주삼
    • Korean Journal of Organic Agriculture
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    • v.11 no.1
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    • pp.55-66
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    • 2003
  • This study was carried out to investigate the effects of different plant growth media on the growth of tomato(Lycopersicum esculentum Mill.) seedlings during growth stages. The media were commercial plant growth medium 100%, earthworm cast (that was produced by vermicomposting of food waste and cattle manure) 100%, earthworm cast 50% + vermiculite 50%, earthworm cast 50% + perlite 50%, earthworm cast 40% + vermiculite 30% + perlite 30%. Plant length(mm), number of leaves, leaf area($\textrm{cm}^2$), stem diameter(mm), plant dry mater were greatest till the 2nd week growth stages in the commercial plant growth medium plots, but those were higher in the earthworm cast than those in the other plant growth media at the later stages of this study(P<0.05). And relative growth rate of biological yield, relative growth rate of shoot and relative growth rate of root were highest in the earthworm cast till the 4th week growth stage. Therefore it can be implied that there is the possibility of potential utilization of earthworm cast, which was produced by vermicomposting of food waste and cattle manure, as vegetable growth medium.

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Effects of Feeding Earthworm Meal on the Meat Safety and Performance of Broiler Chicks (지렁이 분말의 급여가 계육의 안전성 및 육계의 생산성에 미치는 영향)

  • Son, Jang-Ho
    • Korean Journal of Organic Agriculture
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    • v.15 no.2
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    • pp.185-194
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    • 2007
  • This study was conducted to evaluate effects of feeding earthworm meal on the meat safety and performance of broiler chicks. A total of 60 broiler chicks at 7 days of age were fed the commercial diet and water until 47 days of age, earthworm meal divided into three treatments, 0% (control), 0.4% (treatment-1) and 0.6% (treatment-2) of dry earthworm meal. The body weight gain and feed/gain tend to be increase fed a 0.4 to 0.6% than 0% of earthworm meal. The effects tended to be higher in 0.4% than 0.6% of earthworm meal. As, Cd, Cr, Hg and Pb were detected at level of 4.41, 1.23, 1.18, 0.00 and 3.39ppm in earthworm meal, respectively, but those were not detected in the chicken meat (breast and thigh meat). It was assumed that supplementing 0.4% of earthworm meal in the broiler diet, improved the performance of broiler chicks and it still did not affect meat safety.

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Earthworm harvesting efficiency of earthworm(Eisenia fetida) attracting trap in the vermicomposting bed (지렁이 사육상에서 지렁이 유인장치에 의한 줄지렁이(Eisenia fetida) 유인효과)

  • Bae, Yoon-Hwan;Park, Kwang-Ill
    • Journal of the Korea Organic Resources Recycling Association
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    • v.13 no.2
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    • pp.98-106
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    • 2005
  • Population dynamics in the vermicomposting bed was investigated. And harvesting efficiencies of earthworm attracting traps with different attractants, mesh sizes of net and covering materials was evaluated. Peak density of earthworm population was $5kg/m^2$ and therafter its desity kept $4.4{\sim}5.0kg/m^2$. It was evaluated that suitable mesh size of the net was 7mm and proper covering materials of the earthworm attracting trap was cotton quilt. The earthworm harvesting efficiency of trap with attractant was much higher than that of trap without attractant. With more amount of attractant in the trap and with longer setting period of trap onto the vermicomposting bed, the earthworm attracting trap harvested more earthworms. Crushed pear-peel attracted much more earthworms than paper mill sludge, but it was difficult to supply enough amount of crushed pear-peel for practical need. Sugar solution(10%) with tab water was proven to be an alternative to crushed pear-peel because its attracting effect on earthworm was as high as crushed pear-peel and it was easy to prepare and supply in large quantity.

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The potential of earthworm and its components as a therapeutic agent for neuronal damage

  • Moon, Byeong Cheol;Kim, Joong Sun
    • Journal of Biomedical and Translational Research
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    • v.19 no.3
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    • pp.58-64
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    • 2018
  • Earthworms have been employed in traditional oriental medicine for the treatment of neurological disorders, as anticonvulsants, analgesics, and sedatives. In fact, earthworms are currently used as a medicinal agent in China, South Korea, Japan, Taiwan and North Korea. However, both the species and the genus of the earthworms registered in the pharmacopoeia of each country are different. Neural injury is induced by oxidative stress, inflammation, and apoptosis. The role of various synthetic chemicals of earthworms as antioxidant and anti-inflammatory agents have been studied and earthworm extract and its components have been shown to protect nerve cells and restore nerve function in various preclinical neuronal damage models. We employed earthworm extracts to provide prevention and treatment strategies for many neurodegenerative disorders including Parkinson's disease, mild cognitive impairment, cerebral infarction, and peripheral nerve damage. In this study, we investigated the effects of earthworm extracts and its components to explore their prophylactic and therapeutic effects in various neuropathic models. We used earthworm resources to provide prevention and treatment strategies for many neurodegenerative disorders including Parkinson's disease, mild cognitive impairment, cerebral infarction, and peripheral nerve damage. We summarized the protective effects of both earthworms and their extracts on neuropathies. The current study identified some earthworm components to be used in treatment and prevention strategies for nerve disorders and could be helpful for the development of new therapies for intractable diseases.