Jong Chun Na

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BACKGROUND/AIMS Colonoscopy training programs and the minimal experience with colonoscopy required to be considered technically competent are not well established. The aim of this study was to determine the colonoscopy learning curves and factors associated with this difficult procedure at a single center. METHODS A total of 3,243 colonoscopies were(More)
A study was conducted to investigate the effect of different monochromatic lights on growth performance and hematological response of growing broiler chickens. A total of 360 one-day-old broiler chicks were randomly divided into 6 lighting treatments, which were replicated 6 times with 10 chicks in each replicate. Six light treatments include incandescent(More)
The present experiment was conducted to evaluate the impact of various levels and forms of α-lipoic acid (ALA) on blood biochemistry, immune and stress response, and antibody titers in broiler chickens. The four levels (7.5, 15, 75, and 150 ppm) and 2 sources (powder, P-ALA and encapsulated, E-ALA) of ALA along with negative (C-) and positive control (C+;(More)
An experiment was conducted to investigate the supplementation of direct-fed microbials (DFM) as an alternative to antibiotics on growth performance, immune response, cecal microbial population, and ileal morphology of broiler chickens. A total of 800 one-day-old male broiler chicks (Ross × Ross) were randomly allotted to 4 dietary treatments with 4(More)
The role of monochromatic lights was investigated on meat quality in 1-d-old straight-run broiler chicks (n = 360), divided into 6 light sources with 6 replicates having 10 chicks in each replicate. Six light sources were described as incandescent bulbs (IBL, as a control) and light-emitting diode (LED) light colors as white light (WL), blue light, red(More)
In this study, 2 myofibrillar protein extraction methods were compared for the preparation of chicken surimi using spent hen breast muscle. One method involved 1 washing with 0.1, 0.5, or 1% sodium chloride solution followed by 2 washings with distilled water, with homogenization and centrifugation of the breast muscle after each washing (new method; NM).(More)
A geothermal heat pump (GHP) is a potential heat source for the economic heating of broiler houses with optimum production performance. An investigation was conducted to evaluate the effect of a heating system using a GHP on production performance and housing environment of broiler chickens. A comparative analysis was also performed between the GHP system(More)
s of papers 103 antimicrobials. However, some isolates exhibited an intermediate susceptibility to Streptomycin resulting in an ACSuT pattern. From 1997 through 2001, the percent of DT104 isolates among the total number of Salmonella isolates tested was less than 4%. Less than one percent of the total number of isolates tested each year were identified as(More)
KIM, M. J., R. PARVIN, M. M. H. MUSHTAQ, J. H. KIM, D. W. KIM, H. K. KANG, J. C. NA, J. HWANGBO, C. D. KIM, K. O. CHO, C. B. YANG and H. C. CHOI, 2014. Influence of colored light-emitting diode illumination on the growth performance and meat quality traits of Pekin ducks (Anas 1platyrhynchos). Bulg. J. Agric. Sci., 20: 943-948 The present experiment has(More)
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