• Title/Summary/Keyword: Agricultural activities

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Effects of reforestation approaches, agroforestry and woodlot, on plant community composition, diversity and soil properties in Madhupur Sal forest, Bangladesh

  • Hasan, Mohammad Kamrul;Islam, Md. Tariqul;Akter, Rojina;Roshni, Nasima Akther
    • Journal of Ecology and Environment
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    • v.46 no.3
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    • pp.204-217
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    • 2022
  • Background: Increasing land demands for food production have led to biodiversity loss and land degradation in the Madhupur Sal forest. Reforestation activities such as agroforestry and woodlot plantation support the conservation of diversity, restoration of forest and prevention of soil erosion in degraded natural Sal forest. Knowing about these reforestation activities, this study is needed to compare the species composition, richness, and soil nutrients of these two plantation activities to the natural Sal forest in the degraded Madhupur Sal forest in Bangladesh. Results: The analysis showed that in between the reforestation activities, the highest Shannon-Wiener index (1.79), evenness (0.60) and Simpson's index (0.79) were found in the agroforestry site compared to the woodlot plantation site. On the contrary, the highest species richness (n = 14), tree basal area (19.56 m2 ha-1), Margalef's index (1.96) were recorded in woodlot plantation than in the agroforestry site. We observed that at 0-15 cm depth, soil organic matter (2.39%), total nitrogen (0.14%), available phosphorous (62.67 ㎍ g-1) and exchangeable potassium (0.36 meq/100 g) in agroforestry plots were significantly higher compared to other forest sites. At topsoil (15-30 cm depth), soil organic matter (1.67%) and available phosphorous (21.09 ㎍ g-1) were found to be higher in agroforestry site. Conclusions: Both reforestation approaches improved soil function, although woodlot plantation had the higher species richness. Therefore, plantation activities by the sustainable implementation of these two practices are the best alternative to restore the biodiversity, richness and conserve soil fertility in the Madhupur Sal forest of Bangladesh.

Substitution of Wheat for Corn in Beef Cattle Diets: Digestibility, Digestive Enzyme Activities, Serum Metabolite Contents and Ruminal Fermentation

  • Liu, Y.F.;Zhao, H.B.;Liu, X.M.;You, W.;Cheng, H.J.;Wan, F.C.;Liu, G.F.;Tan, X.W.;Song, E.L.;Zhang, X.L.
    • Asian-Australasian Journal of Animal Sciences
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    • v.29 no.10
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    • pp.1424-1431
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    • 2016
  • The objective of this study was to evaluate the effect of diets containing different amounts of wheat, as a partial or whole substitute for corn, on digestibility, digestive enzyme activities, serum metabolite contents and ruminal fermentation in beef cattle. Four Limousin${\times}$LuXi crossbred cattle with a body weight ($400{\pm}10kg$), fitted with permanent ruminal, proximal duodenal and terminal ileal cannulas, were used in a $4{\times}4$ Latin square design with four treatments: Control (100% corn), 33% wheat (33% substitution for corn), 67% wheat (67% substitution for corn), and 100% wheat (100% substitution for corn) on a dry matter basis. The results showed that replacing corn with increasing amounts of wheat increased the apparent digestibility values of dry matter, organic matter, and crude protein (p<0.05). While the apparent digestibility of acid detergent fiber and neutral detergent fiber were lower with increasing amounts of wheat. Digestive enzyme activities of lipase, protease and amylase in the duodenum were higher with increasing wheat amounts (p<0.05), and showed similar results to those for the enzymes in the ileum except for amylase. Increased substitution of wheat for corn increased the serum alanine aminotransferase concentration (p<0.05). Ruminal pH was not different between those given only corn and those given 33% wheat. Increasing the substitution of wheat for corn increased the molar proportion of acetate and tended to increase the acetate-to-propionate ratio. Cattle fed 100% wheat tended to have the lowest ruminal $NH_3-N$ concentration compared with control (p<0.05), whereas no differences were observed among the cattle fed 33% and 67% wheat. These findings indicate that wheat can be effectively used to replace corn in moderate amounts to meet the energy and fiber requirements of beef cattle.

Spatial Characteristics by Physical Distribution System and Sales Activities of Agricultural Co-operation Chain Stores in Korea (농협 연쇄점의 물류체계와 판매활동의 공간적 특성)

  • 韓柱成
    • Journal of the Korean Geographical Society
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    • v.36 no.3
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    • pp.258-277
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    • 2001
  • Agricultural Co-operation chain stores were highly the utility of distribution rationalization for commercial distribution by informatisation and by multi-polarizied of large physical distribution center of Inventory intensive type consisted of intensive physical distribution. and transportation of commodities from physical distribution center have act by outsourcing. Therefore, the methods of distribution of commodities of life and agricultural products are distinguished from route distribution and regular time collective distribution. the method of distribution is formated the distribution field b\ulcorner characteristic of commodity. On the other hand, spatial characteristics by sales activities of commodities was clarified by types of stole commodity according to level of paddy agriculture development and level of service industrial employment. But manufactured foodstuffs and miscellaneous goods. that is commodities of life clarified the fact selling that is not influenced by regional type.

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Effects of Oxidative Stress on Growth Performance, Nutrient Digestibilities and Activities of Antioxidative Enzymes of Weanling Pigs

  • Yuan, Shi-bin;Chen, Dai-wen;Zhang, Ke-ying;Yu, Bing
    • Asian-Australasian Journal of Animal Sciences
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    • v.20 no.10
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    • pp.1600-1605
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    • 2007
  • This study was undertaken to investigate the effects of oxidative stress on growth performance, nutrient digestibilities and activities of antioxidant enzymes of weanling pigs. In the experiment, 24 male $Landrance{\times}Yorkshire $weanling pigs were allotted to three groups of 8 animals each. Pigs were fed individually. According to a single factorial arrangement, pigs received diets with 5% of either fresh (group 1 and group 3) or oxidized fish oil (peroxide value was 786.50 meq $O_2/kg$ before inclusion in the diet, group 2). At the beginning of the experiment, pigs in group 3 received an intraperitoneal injection of diquat at 12 mg/kg of body weight. The trial lasted for 26 d. A metabolism test was carried out during the last 4 days of the second week. The results showed that feeding diets containing oxidized fish oil or injection with diquat depressed the growth performance and nutrient digestibilities of weanling pigs, decreased activities of antioxidant enzymes and increased concentration of malondialdehyde in plasma and liver. Intraperitoneal injection of diquat would induce more serious oxidative stress than oral intake of oxidized fish oil in the diet. In conclusion, administration of oxidized fish oil or diquat could induce oxidative stress in weanling pigs, and oxidative stress could depress growth performance and impact anti-oxidative ability of young pigs.

Antimicrobial Property of honeybee (Apis mellifera L.) venom against Propionibacterium acnes and Aerobic Skin Flora (국내산 봉독의 여드름 유발균 및 피부 상재균 증식 억제 효과)

  • Han, Sang-Mi;Lee, Kwang-Gil;Yeo, Joo-Hong;Kim, Wan-Tae;Park, Kwan-Kyu
    • Korean Journal of Pharmacognosy
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    • v.40 no.3
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    • pp.173-177
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    • 2009
  • The in vitro antibacterial activities of honeybee(Apis mellifera. L) venom collected by a bee venom collector were investigated against several bacteria including antibiotic-susceptible and resistant Propionibacterium acnes. Honeybee venom was prepared with different concentrations and they showed strong antibacterial activites. Honeybee venom inhibited the growth of the tested antibiotic-resistant P. acnes at the concentration of 1 mg/ml. The inhibitory activities of the honeybee venom showed time-dependent manner. Honeybee venom did not influence the viability of human dermal fibroblast at the high concentration of less than 10 mg/ml. From these results, we expect that honeybee venom has strong antibacterial activities and has advantage for treating cure.

Analysis of the Healing Effects of a Flower Craft Activity Program - Focusing on Perceived Stress, Depression, and Self-Esteem - (꽃공예 활동 프로그램의 치유효과 분석 - 지각된 스트레스, 우울, 자아존중감을 중심으로 -)

  • Young-Do Shim;Dae-Koo Kang
    • Journal of Agricultural Extension & Community Development
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    • v.30 no.4
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    • pp.171-186
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    • 2023
  • This study aims to explore comprehensively the effects of a flower craft activity program focused on perceived stress, depression, and self-esteem of adult with mixed methods. The main results of this study are as follows. In the mixed analysis results, perceived stress was reduced by immersing oneself in completing one's own work through flower craft activities, as distracting thoughts in the head disappeared. In the case of depression, depression decreased in the relationship between group members who worked together to complete their own work through flower craft activities. In the case of self-esteem, it was analyzed that flower craft activities had the effect of increasing self-esteem through the satisfaction of the need for life and self-esteem. In future study, this suggests that the healing program applied based on this can be comprehensively reviewed, modified, and supplemented to reorganize it into a more effective flower craft activity program.

Nutritional Compositions and Physiological Activities of Chungbuk New Mulberry Cultivar 'Cheongsu' (충북 신품종 오디 '청수'의 영양성분 및 생리활성 분석)

  • Lee, A Reum;Park, Jae-Ho;Noh, Jae-Gwan;Kim, Youngho;Huh, Yoon Sun;Hong, Eui Yon;Eom, Hyun-Ju
    • The Korean Journal of Food And Nutrition
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    • v.29 no.1
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    • pp.19-26
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    • 2016
  • Mulberry (oddi) is one of the most popular functional foods with many physiological components. This study investigated and compared the nutritional compositions and physiological activities of four mulberry fruits from Morus albo L. including Cheongilppong, Iksuppong, Suwonppong and Cheongsuppong (a new cultivar from Chungcheongbuk-do). To analyze the nutrient contents, mulberry fruits were freeze-dried. The results showed that the proximate compositions of the four mulberry cultivars ranged from 9.61~14.11% for moisture, 8.28~11.90% for crude protein, 3.70~4.86% for crude ash, 4.28~5.54% for crude lipid and 7.46~10.78% for crude fiber. The above proximate contents of mulberry cultivars were not significantly different. However, Cheongsuppong had the highest content of reducing sugar, 74.7%. Chungsuppong and Iksuppong showed higher contents of total polyphenol and anthocyanin than other mulberry cultivars, while all mulberry cultivars showed high antioxidant activities. Hypoglycemic effect had a slightly higher level in Suwonppong and Cheongsuppong than in the other samples. Taken together, the new cultivar "Cheongsu" oddi can be suggested as a potential source of functional food.

Physicochemical characteristics of beer with rice nuruk

  • Kang, Sun-a;Kwon, Ye-seul;Jeong, Seok-tae;Choi, Han-seok;Im, Bo-ra;Yeo, Su-hwan;Kang, Ji-eun
    • Journal of Applied Biological Chemistry
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    • v.63 no.3
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    • pp.229-234
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    • 2020
  • Beer production with rice or other malt substitutes suffers from a lack of suitable enzymes for saccharification. For this reason, rice nuruk (fermentation starter) was tested as a starch replacement for malt in the saccharification process of beer production. The results of this study show that the enzyme activities of rice nuruk made with brewing fungi were higher than those of malt. Saccharification and glucoamylase activities were high in Aspergillus awamori KCCM 30790 and α-amylase activity was high in Aspergillus oryzae CF1003. Overall, malt beer had significantly higher alcohol, pH, total acid, volatile acids, amino acids, free amino nitrogen, bitterness unit and ΔE than rice nuruk beer. Where as Aspergillus awamori KCCM 30790 beer had significantly higher soluble solids, reducing sugar than malt beer. According to a sensory evaluation, malt beer was better color, flavor and Aspergillus oryzae CF1003 beer was better taste, texture, overall acceptability than other beer. Therefore Aspergillus awamori KCCM 30790 beer was suitable considering enzyme activities (saccharification, glucoalmylase) and physicochemical characteristics (soluble solids, reducing sugar). And then Aspergillus oryzae CF1003 beer was suitable considering sensory evaluation (taste, texture, overall acceptability). Therefore rice nuruk like Aspergillus awamori KCCM 30790 and Aspergillus oryzae CF1003 were suitable as a substitute material that can replace for malt in beer proceccing.

Effect of Climatic Conditions on Pollination Behavior of Honeybees (Apis mellifera L.) in the Greenhouse Cultivation of Watermelon (Citrullus lanatus L.)

  • Lee, Kyeong Yong;Lim, Jeonghyeon;Yoon, Hyung Joo;Ko, Hyeon-Jin
    • Journal of Apiculture
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    • v.33 no.4
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    • pp.239-250
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    • 2018
  • We investigated the pollination activity of honeybees (Apis mellifera L.) in terms of different climatic conditions in the greenhouse cultivation of watermelons (Citrullus lanatus L.) during winter. The aim of the study was to search a climatic condition which effectively can be use honeybees as pollinators during the flowering season of watermelons in winter or early spring. The average climatic conditions inside the greenhouse during the bee activity time (BAT)-between 10:00 and 16:00 in mid-Februarywere a temperature of $30.4^{\circ}C$, relative humidity of 53.7%, illuminance level of 22,728.4lx, and UV level of $0.233mW/cm^2$. Bee traffic and foraging activity were at their greatest at 10:00 and tended to decrease with time. Male watermelon flowers typically dehisced between 10:00 and 12:00. Climatic conditions were significantly correlated with bee activities, including bee traffic and foraging activity. Bee activities were positively correlated with temperature, illuminance level, and UV level but negatively correlated with relative humidity. Temperature had the greatest effect on honeybee behavior. Among the foraging honeybees, the number of high-flying bees that did not pollinate flowers showed a strong positive correlation with temperature, and the number of bees landing on the flowers showed a positive correlation with the UV level. The temperature range inside greenhouses at which the pollination activities of honeybees can be maintained efficiently during winter watermelon pollination was found to be $21{\sim}25^{\circ}C$.

A review of the immunomodulatory activities of polysaccharides isolated from Panax species

  • Hu, Yeye;He, Yang;Niu, Zhiqiang;Shen, Ting;Zhang, Ji;Wang, Xinfeng;Hu, Weicheng;Cho, Jae Youl
    • Journal of Ginseng Research
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    • v.46 no.1
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    • pp.23-32
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    • 2022
  • Panax polysaccharides are biopolymers that are isolated and purified from the roots, stems, leaves, flowers, and fruits of Panax L. plants, which have attracted considerable attention because of their immunomodulatory activities. In this paper, the composition and structural characteristics of purified polysaccharides are reviewed. Moreover, the immunomodulatory activities of polysaccharides are described both in vivo and in vitro. In vitro, Panax polysaccharides exert immunomodulatory functions mainly by activating macrophages, dendritic cells, and the complement system. In vivo, Panax polysaccharides can increase the immune organ indices and stimulate lymphocytes. In addition, this paper also discusses the membrane receptors and various signalling pathways of immune cells. Panax polysaccharides have many beneficial therapeutic effects, including enhancing or activating the immune response, and may be helpful in treating cancer, sepsis, osteoporosis, and other conditions. Panax polysaccharides have the potential for use in the development of novel therapeutic agents or adjuvants with beneficial immunomodulatory properties.