• Title, Summary, Keyword: Mudfish

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A Study on the Mudfish Raising using of Raw Hens Excreta (생(生)계분을 이용한 미꾸리 양식에 관한 연구)

  • Son, Jang-Ho
    • Korean Journal of Organic Agriculture
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    • v.13 no.1
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    • pp.113-122
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    • 2005
  • for 50% of Rash water every week during experimental period. Eight of 100L of aquarium, eight kg of mudfish and four of female korean native chicken were used this study. This study are divided according to the mudfish fed on commercial mudfish diet in the four of control group and fed on raw hens excreta in the four treatment group. The chemical composition was compared with commercial mudfish diet and hens excreta. In the both sample, crude protein contents was almost same. The crude fat and crude ash were higher in hens excreta than commercial mudfish diet. The growth performance of mudfish tend to high when fed hens excreta. There were no differences in contents of E. Coli and Salmonella and pH of water in aquariums between the groups. Mortality of mudfish tend to decrease when fed hens excreta. No problem with mudfish health was observed during the experimental period of 35 days. These results indicated that it is possible to raising mudfish fed on hens excreta only.

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A Study on the Mudfish Raising Use of Hens Excreta (계분을 이용한 미꾸리 양식에 관한 연구)

  • 손장호;조익환
    • Korean Journal of Organic Agriculture
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    • v.11 no.1
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    • pp.89-97
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    • 2003
  • The mudfish(Misgurnus anguillicaudatus) raising fed on hens excreta in order to study effects on production of animal feed resource. The raw hens excreta used for 2 years old mudfish diet during the 35 days and water in aquarium for mudfish was never exchanged during experimental period. Eight of 100L of aquarium. eight kg of mudfish and four of female korean native chicken were used this study. This study are divided according to the mudfish fed on commercial mudfish diet in the four of control group and fed on hens excreta in the four treatment group. The chemical composition was compared with commercial mudfish diet and hens excreta. In the both sample, crude protein contents was almost same. The crude fat and crude ash were higher in hens excreta than commercial mudfish diet. The growth performance of mudfish tend to high when fed hens excreta. There were no differences in contents of E. Coli and Salmonella and pH of water in aquariums between the groups. Mortality of mudfish tend to decrease when fed hens excreta. No problem with mudfish health was observed during the experimental period of 35 days. These results indicated that it is possible to raising mudfish fed on hens excreta only.

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Functional Evaluation of Small-scale Pond at Paddy Field as a Shelter for Mudfish during Midsummer Drainage Period (논 중간 낙수기에 미꾸라지 피난처로서 둠벙의 기능 평가)

  • Kim, Jae-Ok;Shin, Hyun-Sang;Yoo, Ji-Hyun;Lee, Seung-Heon;Jang, Kyu-Sang;Kim, Bom-Chul
    • Korean Journal of Environmental Agriculture
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    • v.30 no.1
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    • pp.37-42
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    • 2011
  • BACKGROUND: The purpose of this study was to evaluate ecological function of small-scale pond and movement characteristics of mudfish (Misgurnus mizolepis) during midsummer drainage period. METHODS AND RESULTS: In situ experiments were performed in the paddy field with mudfish under the condition of midsummer drainage from 13 July to 29 July 2010. The mudfish used in this experiment is approximately 1,000 individuals with a cut tail. Mudfishs were released in the rice field before midsummer drainage and caught again in the small-scale pond and the paddy field after midsummer drainage. Results showed that the abundance of mudfish was higher in drainage canal than small-scale pond at the early stage of midsummer drainage, because flow was formed toward the drainage canal. In that time, 3% of the total marked mudfish were captured at outlet of drainage canal. As the paddy was drying, 5% of total marked mudfish moved to the small-scale pond during midsummer drainage period. Contrary to the general hypothesis, the marked mudfish was not found in holes in paddy field.of total caught in the small-scale pond ingested mainly animal prey, and it's frequency of empcy stomach was 10%.oOn the other hand, all m total collected in the paddy field showed empcy stomach. It was apparent from the experiment that m total are eeldng normally in the small-scale pond, while m total are not eat properly in paddy field. CONCLUSION(s): As the paddy was drying, mudfish moved to the small-scale pond during midsummer drainage period but mudfish was not found in holes in paddy field. It can be concluded that small-scale provides a shelter and prey to mudfish in the midsummer drainage period.

Variation in Population Size of Mudfish by Agricultural Practices in Paddy Fields (논 생태계에서 영농방법에 따른 미꾸라지개체군의 변동 요인 분석)

  • Han, Min-Su;Cho, Kwang-Jin;Nam, Hyung-Kyu;Kang, Kee-Kyung;Na, Young-Eun;Kim, Miran;Kim, Myung-Hyun
    • Korean Journal of Environmental Agriculture
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    • v.32 no.1
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    • pp.24-34
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    • 2013
  • BACKGROUND: This study was carried out to compare population size of mudfish (Misgurnus mizolepis) between the agricultural practices and to investigate the causes of its differences. We also provided basic information for sustainable use of mudfish population in paddy fields. METHODS AND RESULTS: Mudfish and benthic invertebrates which are diet of mudifish were investigated from 8 sites of organic and conventional rice paddy fields in South Korea. Total number of mudfish were 1,882 individuals in survey sites. Mudfish population were 2.4 times larger in organic paddy fields (1,333 individuals) than in conventional paddy fields (549 individuals). The population size of mudfish was larger in Mungyeong-si, Gyeongsangbuk-do and Anseong-si, Gyeonggi-do with relatively better environmental conditions than the other 5 sites including Suwon-si, Gyeonggi-do, Cheongyang-gun, Chungcheongnam-do, Gunsan-si, Jeollabuk-do, Gimje-si, Jeollabuk-do, Hwasun-gun, Jeollanam-do, Hamyang-gun, Gyeongsangnam-do. Benthic invertebrates collected from survey sites were 74 species, 68 genera, 46 families, 19 orders, 6 classes and 3 phyla. According to agricultural practices, benthic invertebrates were identified 66 species, 62 genera, 41 families, 17 orders, 6 classes and 3 phyla in organic paddy fields while there were 66 species, 60 genera, 42 families, 18 orders, 6 classes and 3 phyla in conventional paddy fields. Dominant invertebrates were Chironomidae sp., Branchiopoda sp., Ostracoda sp., and Copepoda sp. There were no differences in dominant species between organic and conventional paddy fields. Population size of mudfish tended to increase with the population size of Chironomidae sp., Branchiopoda sp., Ostracoda sp., and Copepoda sp. But, only population of Chironomidae sp. and Copepoda sp. statistically related to population size of mudfish. The number of individuals of mudfish (Misgurnus mizolepis) was higher at the low rate of urban area than any other surveyed region and was affected by appearance ratio of main preys such as Chironomidae sp. and Ostracoda sp. CONCLUSION(S): The population size of mudfish in rice paddy fields could be affected by environmental conditions and agricultural practices such as organic and conventional methods.

Isolation of Chryseobacterium meningosepticum Producing $\beta$-Mannosidase from a Mudfish (미꾸라지로부터 $\beta$-Mannosidase를 생산하는 Chryseobacterium meningosepticum의 분리)

  • Kim, Hyeon-Suk;Yun, Gi-Hong
    • Microbiology and Biotechnology Letters
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    • v.32 no.4
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    • pp.371-374
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    • 2004
  • A bacterium producing the $\beta$-mannosidase was isolated from intestine of fresh fish. The isolate YB-29 has been identified as Chryseomeningosepticum on the basis on its 16S rRNA sequence, morphology and biochemical proper The $\beta$-mannosdiase activity was detected in both the culture filtrate and the cell extract of C. meningosepticum YB-29. The $\beta$-mannosidase of culture filtrate showed the maximum activity for hydrolysis of para-nitrophenyl-$\beta$-D-mannopyranoside at pH 5.0-6.0 and 55-$60^{\circ}C$. The enzyme was able to hydrolyze the oligomeric substrates such as mannobiose and mannotriose with higher activity for mannotriose than mannobiose.

Effect of Steram Distillate from Some Medicinal Plants on Acetylcholinesterase Activity Following Intoxication by Organophosphate Pesticides in Animals (수종 생약 수증기 증류물이 유기인제 농약에 의하여 저해된 Acetylcholinesterase 활성에 미치는 효과)

  • Shin, Kuk-Hyun;Lee, Eun-Bang;Song, Young-Jin;Kim, Oon-Ja
    • Korean Journal of Pharmacognosy
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    • v.23 no.2
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    • pp.106-114
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    • 1992
  • The acute toxicity and the effect of steam distillate obtained from several plant mixtures (G-3) on the reactivation of brain, lung, and blood acetylcholinesterase (AChE) activity, and recovery from other toxic symptoms following intoxication by organophosphate pesticides were investigated in mice and mudfish. Administration of G-3 $(50{\sim}100\;ml/kg,\;i.p.)$ immediately or 30 min prior to Diazinon or Sumithion treatments, respectively, resulted in a significant reactivation of AChE activity in brain, lung, and blood, their potencies being almost equipotent to those of 2-PAM, one of well-known antidotes. G-3 itself exhibited almost no acute toxicity even at the highest dose employed, and without effect on the inhibition of hepatic drug metabolism function following organophosphate administrations. G-3 showed a significant diminution of the death rate in mudfish as well as in mice intoxicated by Diazinon.

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Estimating Volumes and Expenditures of Inland Water Fish Consumption (내수면어종 소비시장 분석)

  • Lee, Hee-Chan
    • The Journal of Fisheries Business Administration
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    • v.40 no.1
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    • pp.75-96
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    • 2009
  • The objective of this research was to estimate the size of consumption market for inland water fishes. Volumes and expenditures of a total of sixteen fishes consumed in 2007 were estimated based on a module developed. Data were collected through sample surveys of 3,081 households and 291 restaurants dealing with inland water fishes. On the basis of the results, people consumed an estimated 39.5 thousand ton as a whole on inland water fishes. An average person consumed 5.961 times and 1.136kg per year. An annual expenditure of 1,609.7 billion won was estimated. The total was divided 1,450.1 billion won on fishes(90%) and 1,595 billion won on shellfishes(10%). A typical consumer spent 41,668 won on fishes and 4,584 won on shellfishes, averaging about 46,300 won overall. Water eel was top in volumes and expenditure, while mudfish in consumption frequency.

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A study of Korean traditional Food in Kang Won Do (I) (강원 지역 농촌 주부들의 전통 식생활 관리 현황에 관한 실태 조사(I) -식생활에 대한 태도와 일반적 현황을 중심으로-)

  • 김은실
    • Korean journal of food and cookery science
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    • v.11 no.4
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    • pp.342-350
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    • 1995
  • The purpose of this study was to improve and hand down traditional dining habits. Questionnaires were distributed to rural house wives in Kangwon-do. The results were as follows; 1. 30.8% of the respondents was 40 to 49 years old. 35.2% of their education was primary school. 49.5% of them had husbands and children. 44.2% of them had 3 to 4 family members. 26.9% of them earned 8 to 11 millon won yearly. 2. Their housing environment showed that 52.5% of housing was a Korean traditional house or Hanok. 72.1% of kitchen was a stand-up one. 66% of fuel was oil. 3. 99.3% of the respondents had refrigerators. 66.3% electronic range, 95.9% electronic rice cooker, 97.2% gas range, 59.6% mixer, 62% electronic fry pan respectively. 4. 73.5% of the respondents got information about Korean traditional food from seniors or friends. 36.6% of them learned new recipe from TV, newspapers and magazines. 43.3% of them thought their concern about meals was average. 48.4% of them paid much attention to prepare meals for themselves. 52.7% of them spent a half to one hour for preparing dinner. 48.3% of them ate processed foodstaffs often. 31.5% of them dined out once every two or three months. 5. 79.5% of them had rice for breakfast, 74.5% for lunch, and 98.4% for dinner respectively. 96.2% of the respondents made Kimchi and 55% among them had two kinds of Kimchi. 91.1% of them had two to three kinds of dishes except Kimchi for breakfast. 68% of them used a synthetic flavoring. 6. 16.2% of the respondents ate beef once a week, 40% pork, 23% chicken, 3% dog meat respectively. 37% of them ate mackerel pike, 25.5% mackerel once a week, 11.6% hairtail, 25.5% mackerel pike, 25.6% yeemunshu, 13.7% tuna respectively. Freshwater fishes such as mudfish, trout and Israel carp were their favorite onces.

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Allochthonous Organic Matter Contribution to Foodweb in Shingu Agricultural Researvoir after Rainfall Period (강우기 후 신구 농업용 저수지 먹이망에 미치는 외부기원 유기물의 영향 - 안정동위원소비 활용 -)

  • Kim, Min-Seob;Lee, Yeon-Jung;An, Kwang-Guk;Kim, Baik-Ho;Hwang, Soon-Jin;Shin, Kyung-Hoon
    • Korean Journal of Ecology and Environment
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    • v.47 no.1
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    • pp.53-61
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    • 2014
  • The origin of particulate organic matter (POM) and food web structure were investigated in Shingu reservoir based on stable isotope analysis from pre-monsoon (July) to post-monsoon (September) 2007. According to the depth in Shingu reservoir, the $^{13}C$ and $^{15}N$ values of POM for pre-monsoon period were nonsignificant distinction, while it was significant variation after rainfall period. The ${\delta}^{13}C$ values of POM in premonsoon period ranged from -25.1‰ to -26.1‰ in whole water column, but the ${\delta}^{13}C$ values of POM in post-monsoon period showed relatively wide range between -23.2‰ and -27.5‰. The apparently lighter values (average -27.5‰) in near bottom water (7 m water depth) demonstrate that POM in high turbid water in post-monsoon period may be derived from the outside terrestrial plants (allochthonous) through heavy rainfall during the summer monsoon period. After rainfall period, $^{13}C$ and $^{15}N$ values of D. brachyurum showed -23.3‰ and 12.2‰, respectively, while B. longirostris showed -27.1% and 8.7%, respectively. It suggested that D. brachyurum mainly feed on POM in autochthonous organic matter pool, but B. longirostris mainly consumed POM in allochthonous organic matter pool after rainfall period. Carbon and nitrogen stable isotope ratios were markedly different among secondary consumers. The carp (C. carpio) and catfish (S. asotus) were in the higher trophic level and crucian carp (C. auratus) and mudfish (M. mizolepis) were in the lower trophic level. $^{13}C$ and $^{15}N$ values of Z. platypus didn't significantly changed between before and after rainfall period. But P. parva and C. auratus apparently changed the $^{13}C$ and $^{15}N$ values after rainfall period. It is suggested that P. parva and C. auratus seem to feed allochthonous food source while Z. platypus depend on autochthonous food source.