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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Animal Environmental Science
Journal Basic Information
Journal DOI :
Korean Association for Livestock Housing and Environment
Editor in Chief :
Volume & Issues
Volume 17, Issue sup - Dec 2011
Volume 17, Issue 3 - Dec 2011
Volume 17, Issue 2 - Aug 2011
Volume 17, Issue 1 - Apr 2011
Selecting the target year
Evaluation of Greenhouse Gas Emissions from Animal Manure Treatment Systems with Life Cycle Assessment : A Case Study
Park, K.H. ; Choi, D.Y. ; Cho, S.B. ; Yang, S.H. ; Hwang, O.H. ;
Journal of Animal Environmental Science, volume 17, issue sup, 2011, Pages 1~6
Korean Government announced 'The Roadmap to realize a low carbon green society on year 2020' on July 12, 2011 in order to mitigate greenhouse gas (GHG) emissions. Non-energy category of Food, Agriculture, Forestry and Fishery (FAFF) should mitigate 1,349 kilo
-eq.) tonnes which is 7.1% of Business-As-Usual on year 2020. The mitigation from animal manure treatment system (AMTS) comprises ca. 45% of the total mitigated amount of Non-energy category of FAFF. Hence, the precise evaluation of GHG emissions from AMTS is important to find effective mitigation measures. Life cycle assessment was used to evaluate GHG emissions from AMTS. The most GHG emitter was a composting/liquid fertilizer/activated sludge system (1,649.45 kg
-eq./head/year) and the least GHG emitter was a activated liquid fertilizer system (1,024.46 kg
-eq./head/year). Thermophilic oxic process showed the highest ratio (34.9%) of GHG emissions by the use of electricity to total GHG emissions from systems. Energy efficiency should be considered to mitigate GHG emissions from AMTS.
Studies on Feed Formulation to Reduce Methane Emission and Optimal Rearing Density for Environmental-Friendly Hanwoo Production
Shin, Jong-Suh ; Choi, Byoung-Yang ; Kim, Mi-Jung ; Kim, Sung-Gi ; Ra, Changsix ;
Journal of Animal Environmental Science, volume 17, issue sup, 2011, Pages 7~20
This study was conducted to analyze the mixing ratio of raw feed materials for the methane mitigation and also to identify the minimum rearing density for improving the productivity of beef calves as eco-friendly fodder. Raw materials used in this study for the formulation of feed for methane reduction were crushed corn and alfalfa along with other 21 species. In addition, to investigate the appropriate rearing density, 12 Hanwoo calves with average weight of 150 kg was selected and experiment was conducted for four months. Methane gas emission (Bo) is about 3-4 times less in TMR 4 compared to TMR 1, 2 and 3. Feed price calculated for TMR 4 ration was also affordable. In addition, all TMRs showed a normal ruminal pH. Disappearance rate was observed to be lower in TMR 4 as compared to TMR 1, 2 and 3, but methane production decreased by 24 to 37%. The result showed improved total body weight, average daily gain and feed conversion ratio in rearing low-density (
), and general treatment (
) compared to overcrowding treatment (
). In addition, blood components (total protein, glucose, AST, ALT and GGT factors) involved in health and disease treatments and health-related nutrition metabolism are lower in the low-density and general treatment compared to the high density treatment. Postural development (development of body size) i.e., weight, height and width significantly increased in the low and general density treatment compared to high density treatment. Especially excellent improvement was observed in low-density treatment than the general treatment. Moisture content, colonic bacteria and coccidium are higher in low and high density treatments than in the general treatment. The adequacy for beef rearing density is considered to be more desirable in an area more than
. In conclusion, present study suggests that possibility of methane reduction through adjusting mixed feed ration. Also, rearing density is also an important factor in the growth and development of beef calves.
A Research on the Status of Greenhouse Gas Emission Factors from Livestock Sector to Create a National Greenhouse Gas Inventories
Lee, Jin Eui ; Lee, Hyun Ju ; Park, Kyu Hyun ; Choi, Byong Yang ; Ra, Chang Six ;
Journal of Animal Environmental Science, volume 17, issue sup, 2011, Pages 21~34
In this study, researches on the development of country specific greenhouse gas measurement and sampling methods from the livestock sector were reviewed. Research on greenhouse gas emission factors was started in early 2000 but was not actively involved in the development of livestock sector based emission factor: since 2009, works are underway for the development of livestock sector based emission factor. Most of the research on greenhouse gas emission in the field of animal studies were done by National Institute of Animal Science, because of the uniqueness of the research laboratories. Methods of emission measurement are still not internationally certified and therefore, measurement and sampling methods for Korea livestock sector are being studied, consulting the worldwide research trends. Flux chamber method are commonly using in Korea for green house gas emission factors measurement. In recent years, continuous measurement of the microclimate was introduced to measure greenhouse gases from livestock manure storage facilities and the micrometeorology method should be adapted as recommended by Intergovernmental Penal on Climate Change (IPCC) Guideline.
Effect of Dietary Phytase on Growth Performance and Excreta Excretion of Growing-Finishing Pigs
HwangBo, Jong ; Hong, Eui-Chul ;
Journal of Animal Environmental Science, volume 17, issue sup, 2011, Pages 35~42
This work was conducted to investigate the effect of dietary phytase on growth performance and excreta excretion of growing-finishing pigs for 7 days. Eighty three crossbreeds (Yorkshire
Duroc) of growing-finishing pigs were used in this work, and divided into 6 treatments. Six treatments were compared in a
factorial arrangement with 2 groups (5 replications/group, 8 head/replications) with the additive phytase and 3 groups(growing I, II and finishing phase) with growing phases. Initial weights with growing phases were
, respectively. Body weight gain was high in phytase treatment (P<0.01) and low at finishing phase. Feed conversion ratio was high in no phytase treatment and at finishing phase (P<0.05). Feed and water intakes have no significant difference with phytase existence and growing phases. Feces excretion decreased with growing phase (P<0.05), and was low at phytase treatment (P<0.05). There was no significant difference on urine excretion (P>0.05). Nitrogen (N) and phosphorus (P) intake was not found significant difference with phytase and growing phases. N excretion had no significant difference on phytase existence and growing phase (P>0.05), but P excretion decreased at phytase treatment (P<0.05). N and P excretion ratio was low at phytase treatment (P<0.05). Finally, dietary phytase resulted in improvement of growth performance and reduction of excreta excretion of growing-finishing pigs.
Conducted to Verify the Effect of Chlorine Dioxide (ClO
) on Odor Reduction at a Commercial Swine Facility
Song, J.I. ; Jeon, J.H. ; Park, K.H. ; Yoo, Y.H. ; Kim, D.H. ;
Journal of Animal Environmental Science, volume 17, issue sup, 2011, Pages 43~50
This study was conducted to verify the effect of chlorine dioxide (
) on odor reduction at a commercial swine facility consisting of a windowless piglet barn and a grower/fattening barn. The windowless piglet barn used a duct ventilation system. Air velocity at very below the upper duct was 4.53 m/s. Air velocity at the lower space around the living space of pigs in the grower/fattening barn was 0.26 m/s.
concentration was around 9ppm and less than 3 ppm before and after the
spraying, respectively, which was over 70% reduction. There was no
concentrations measured in the windowless grower/fattening barn and at the exhausted air were 26 ppm and 11ppm, respectively.
concentration at a biocurtain outside was less than 1 ppm. Hence,
spraying at windowless barns was effectively decreased malodor such as
The Weight Analysis of Evaluation Indicators for Assessing Livestock Manure Treatment System and its Technology by AHP
Kim, J.H. ; Cho, S.H. ; Kwag, J.H. ; Choi, D.Y. ; Jeong, K.H. ; Cheon, D.W. ; Lee, S.H. ; Kim, J.H. ; So, K.H. ; Park, C.H. ;
Journal of Animal Environmental Science, volume 17, issue sup, 2011, Pages 51~60
The objective of this study was to suggest strategies for improving "Livestock Manure Treatment Systems and Related Technologies Assessment Program". Analytic Hierarchy Process (AHP) was used to evaluate reasonableness of applied weight value for assessment and improve program management strategies. Results of mail survey collected from animal manure treatment technology specialists of 30 companies nationwide were used for AHP. Company's ability, technological prowess, facility's convenience, economic feasibility are four important aspects of assessment program evaluation using AHP. More than 70% of the respondents said they were overall satisfied with the objectivity of assessment program regarding above four evaluation aspects. However, only 36% of them answered that they were very satisfied with the objectivity of assessment program in terms of economic feasibility. The evaluation results revealed that the assessment program needs to be made up for the weak points regarding economic feasibility. The AHP weight calculation results showed that the current assessment program overestimates the technological prowess, especially livestock manure treatment efficiency. It suggests that the weight value of current assessment program in terms of technological prowess needs to be determined carefully. The current assessment program combined with AHP weight value determination approach will be very useful to improve objectivity and reliability of assessment.
Economic Analysis of the Livestock Manure Treatment System Using Life-Cycle Cost Technique
Kim, J.H. ; Cho, S.H. ; Kwag, J.H. ; Choi, D.Y. ; Jeong, K.H. ; Chung, U.S. ; Chung, M.S. ; Park, S.K. ;
Journal of Animal Environmental Science, volume 17, issue sup, 2011, Pages 61~68
To assess the total cost with all stages of facilities, the feasibility of Life Cycle Cost (LCC) analysis was examined in this study to estimate the livestock manure treatment system and optimal decision making process. For the economic evaluation, the plant/equipment investment and annual operation cost of four Public Livestock Recycling Facilities, whose treatment capacity is 100 ton piggery manure per day, was compared. The initial cost was in the range of 2,699 million won to 3,202 million won, where T and E methods were highest and lowest, respectively. The annual operation cost was in the level of 378 million to 498 million won, which decreased in the following order : T method > J method > E method > B method. For the LCC analysis, 4.7% of interest rate, 3.13% of inflation rate, and 1.52% of net discount rate was considered by the data received from Bank of Korea and Statics Korea in the period of 2000 to 2009. Also, for the calculation of present value factor, the durable years of civil engineering & construction, machinery and electric instrument was 30 years, 10 years and 15 years, respectively. Based on these consideration, operation cost was in the range of 17,570 won/ton to 20,661 won/ton, and E method (17,570 won/ton) was economical and B method (20,661 won/ton) was non-economical. Though initial cost of T method was higher than that of B method, LCC analysis of T method was lower than that of T method due to the lower operation cost. Therefore, LCC analysis, which considers both initial cost and operation cost, is more reasonable evaluation method than either initial cost or annual operation cost. For the change of LCC analysis according to the uncertainty, the sensitivity analysis was carried out using fluctuation magnitude of discount rate in the period of 2000 to 2009. As a result, LCC analysis evaluated by discount rate was stable for the uncertain factors since the cost leadership did not change even though the sensitivity analysis varied. In summary, the economic evaluation using LCC analysis could be an efficient reference to choose the suitable livestock manure treatment plants. Furthermore, standardization of statement calculation for the actual cost analysis should be conducted and more detailed study is necessary to validate this summary. Therefore, the application of comprehensive technology evaluation, which considers LCC analysis, should contribute in obtaining objectivity and enhancing reliability for the 'Evaluation of Livestock Manure Treatment System and its Technology'.