• Journal of Animal Science and Technology
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• v.49 no.3
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• pp.321-328
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• 2007

Two pig trials were conducted to test Herb MixⓇ, a mixture of Rehmannia glutinosa, Angelica gigas, Discorea japonica, Glycyrrhiza uralensis, Schisandra chinensis and Ligusticum jeholense, as a herbal additive to weaning pig diet. Exp. 1 was conducted with 45 three-way cross-bred(Y×L×D) weaning pigs randomly allocated to 3 treatments; control, Herb MixⓇ 0.15% and Herb MixⓇ Gold(Plellidendron amurense fortified Herb MixⓇ) 0.15%. Exp. 2 was conducted with 48 weaning pigs randomly allocated to 4 treatments; control, 0.1%, 0.2% and 0.3% Herb MixⓇ. There was a significant(p=0.05) difference between the control and herbal additive groups, however, no significant difference was found between Herb MixⓇ and Herb MixⓇ Gold in growth performance of Exp. 1. In Ex. 2, supplementation of Herb MixⓇ at all level(0.1%, 0.2% and 0.3%) significantly(P<0.05) improved average daily gain and feed intake, however, there were no significant differences among supplemented groups. Among the blood parameters, serum IgG level and WBC numbers were significantly lowered by Herb Mix supplementation in both experiments. Stress indicator(SI) was significantly lower in herbal additive groups in Exp. 1. Nutrient digestibility of DM and NFE in supplemented groups was lower than the control in Exp. 1. Howener, it was not significantly different among treatments in Exp. 2. Number(cfu) of fecal E.coli decreased while that of Lactobacilli increased in treated groups. It was concluded that fortifying Herb MixⓇ with Plellidendron amurense was not effective in improving the efficacy of Herb MixⓇ and supplementation of Herb MixⓇ at 0.1~0.2% level improves growth performance of weaning pigs. Blood parameters especially immunity related ones(IgG, WBC and SI) were significantly influenced.

• Journal of Environmental Impact Assessment
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• v.29 no.3
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• pp.157-181
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• 2020

Sediments from rivers, lakes and marine ports serve as end points for pollutants discharged into the water, and at the same time serve as sources of pollutants that are continuously released into the water. Until now, the contaminated sediments have been landfilled or dumped at sea. Landfilling, however, was expensive and dumping at sea was completely banned due to the London Convention. Therefore, this study applied contaminated sedimentation soil of 'Royal Palace Livestock Complex' as soil purification method. Soil remediation methods were applied to pretreatment, composting, soil washing, electrokinetics, and thermal desorption by selecting overseas application cases and domestically applicable application technologies. As a result of surveying the site for pollutant characteristics, Disolved Oxigen (DO), Suspended Solid (SS), Chemical Oxygen Demand (COD), Total Nitrogen (TN), and Total Phosphorus (TP) exceeded the discharged water quality standard, and especially SS, COD, TN, and TP exceeded the standard several tens to several hundred times. Soil showed high concentrations of copper and zinc, which promote the growth of pig feed, and cadmium exceeded 1 standard of Soil Environment Conservation Act. In the pretreatment technology, hydrocyclone was used for particle size separation, and the fine soil was separated by more than 80%. Composting was performed on organic and Total Petroleum Hydrocarbon (TPH) contaminated soils. TPH was treated within the standard of concern, and E. coli was analyzed to be high in organic matter, and the fertilizer specification was satisfied by applying the optimum composting conditions at 70℃, but the organic matter content was lower than the fertilizer specification. As a result of continuous washing test, Cd has 5 levels of residual material in fine soil. Cu and Zn were mostly composed of ion exchange properties (stage 1), carbonates (stage 2), and iron / manganese oxides (stage 3), which facilitate easy separation of contamination. As a result of applying acid dissolution and multi-stage washing step by step, hydrochloric acid, 1.0M, 1: 3, 200rpm, 60min was analyzed as the optimal washing factor. Most of the contaminated sediments were found to satisfy the Soil Environmental Conservation Act's standards. Therefore, as a result of the applicability test of this study, soil with high heavy metal contamination was used as aggregate by applying soil cleaning after pre-treatment. It was possible to verify that it was efficient to use organic and oil-contaminated soil as compost Maturity after exterminating contaminants and E. coli by applying composting.