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http://dx.doi.org/10.5187/JAST.2007.49.2.161

Estimation of Terminal Sire Effect on Swine Growth and Meat Quality Traits  

Kim, H.S. (Division of Applied Life Science.Institute of Agriculture & Life Sciences, Gyeongsang National University)
Kim, B.W. (Division of Applied Life Science.Institute of Agriculture & Life Sciences, Gyeongsang National University)
Kim, H.Y. (Division of Applied Life Science.Institute of Agriculture & Life Sciences, Gyeongsang National University)
Iim, H.T. (Division of Applied Life Science.Institute of Agriculture & Life Sciences, Gyeongsang National University)
Yang, H.S. (Division of Applied Life Science . Institute of Agriculture & Life Sciences)
Lee, J.I. (Gyeongnam Province Advanced Swine Research Institute)
Joo, Y.K. (Gyeongnam Province Advanced Swine Research Institute)
Do, C.H. (Gyeongnam Province Advanced Swine Research Institute)
Joo, S.T. (Division of Applied Life Science.Institute of Agriculture & Life Sciences, Gyeongsang National University)
Jeon, J.T. (Division of Applied Life Science.Institute of Agriculture & Life Sciences, Gyeongsang National University)
Lee, J.G. (Division of Applied Life Science.Institute of Agriculture & Life Sciences, Gyeongsang National University)
Publication Information
Journal of Animal Science and Technology / v.49, no.2, 2007 , pp. 161-170 More about this Journal
Abstract
A submerged biofilm sequencing batch reactor (SBSBR) process, which liquor was internally circulated through sandfilter, was designed, and performances in swine wastewater treatment was evaluated under a condition of no external carbon source addition. Denitrification of NOx-N with loading rate in vertical and slope type of sandfilter was 19% and 3.8%, respectively, showing approximately 5 times difference, and so vertical type sandfilter was chosen for the combination with SBSBR. When the process was operated under 15 days HRT, 105L/hr.m3 of internal circulation rate and 54g/m3.d of NH4-N loading rate, treatment efficiencies of STOC, NH4-N and TN (as NH4-N plus NOx-N) was 75%, 97% and 85%, respectively. By conducting internal circulation through sandfilter, removal performances of TN were enhanced by 14%, and the elevation of nitrogen removal was mainly attributed to occurrence of denitrification in sandfilter. Also, approximately 57% of phosphorus was removed with the conduction of internal circulation through sandfilter, meanwhile phosphorus concentration in final effluent rather increased when the internal circulation was not performed. Therefore, It was quite sure that the continuous internal circulation of liquor through sandfilter could contribute to enhancement of biological nutrient removal. Under 60g/m3.d of NH4-N loading rate, the NH4-N level in final effluent was relatively low and constant(below 20mg/L) and over 80% of nitrogen removal was maintained in spite of loading rate increase up to 100g/m3.d. However, the treatment efficiency of nitrogen was deteriorated with further increase of loading rate. Based on this result, an optimum loading rate of nitrogen for the process would be 100g/m3.d.
Keywords
Growth trait; Berkshire; Meat quality trait; Terminal Sire; Pork;
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Times Cited By KSCI : 1  (Citation Analysis)
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