Gun-Jun Park
Pukyong National University
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Featured researches published by Gun-Jun Park.
Asian-australasian Journal of Animal Sciences | 2015
Hyeonho Yun; Gun-Jun Park; Imho Ok; Kumar Katya; Silas S.O. Hung; Sungchul C. Bai
This study was carried out to evaluate the dietary threonine requirement by measuring the plasma free threonine and ammonia concentrations in rainbow trout, Oncorhynchus mykiss after dorsal aorta cannulation. A total of 70 fish (average initial weight 506±8.2 g) were randomly distributed into each of the 14 net cages (5 fish/cage). After 48 hours (h) of feed deprivation, each group was intubated at 1% body weight with one of the seven L-amino acid based diets containing graded levels of threonine (0.42%, 0.72%, 0.92%, 1.12%, 1.32%, 1.52%, or 1.82% of diet, dry matter basis). Blood samples were taken at 0, 5, and 24 h after intubation. Post-prandial plasma free threonine concentrations (PPthr) of fish 5 h after intubation with diets containing 1.32% or more threonine were significantly higher than those of fish intubated with diets containing 1.12% or less threonine (p<0.05). Post-absorptive free threonine concentrations (PAthr) after 24 h of intubation of the fish with diets containing 0.92% or more threonine were significantly higher than those of fish intubated with diets containing 0.72% or less threonine. Post-prandial plasma ammonia concentrations (PPA, 5 h after intubation) were not significantly different among fish intubated with diets containing 1.12% or less threonine, except the PPA of fish intubated with diet containing 0.42% threonine. Broken-line model analyses of PPthr, PAthr, and PPA indicated that the dietary threonine requirement of rainbow trout should be between 0.95% (2.71) and 1.07% (3.06) of diet (% of dietary protein on a dry matter basis).
Aquaculture Research | 2004
Se-Min Choi; Xiaojie Wang; Gun-Jun Park; Sung-Ryul Lim; Kang-Woong Kim; Sungchul C. Bai; In-Soo Shin
Aquaculture Research | 2004
Kang-Woong Kim; Xiaojie Wang; Se-Min Choi; Gun-Jun Park; Sungchul C. Bai
Aquaculture Research | 2003
Kang-Woong Kim; Xiaojie Wang; Se-Min Choi; Gun-Jun Park; Ja-Wan Koo; Sungchul C. Bai
Journal of The World Aquaculture Society | 2007
Okorie Eme Okorie; Young Chul Kim; Seunghyung Lee; Jun-Young Bae; Jin H. Yoo; Kyungmin Han; Sungchul C. Bai; Gun-Jun Park; Se-Min Choi
Aquaculture Research | 2003
Xiaojie Wang; Kang-Woong Kim; Gun-Jun Park; Se-Min Choi; Hong-Ki Jun; Sungchul C. Bai
Korean Journal of Fisheries and Aquatic Sciences | 2009
Young Chul Kim; Kang-Woong Kim; Gun-Jun Park; Jun-Ho Lee; Maeng-Hyun Son; Sungchul C. Bai
Korean Journal of Fisheries and Aquatic Sciences | 2008
Seunghyung Lee; Gun-Jun Park; Sungchul C. Bai
Asian-australasian Journal of Animal Sciences | 2005
Gun-Jun Park; Sungchul C. Bai; Imho Ok; Kyungmin Han; Silas S.O. Hung; Quinton R. Rogers; Tae-Sun Min
Journal of Applied Ichthyology | 2013
Ju-Yoon Bae; Gun-Jun Park; Kwang-Yeol Yoo; Jeong-Yeol Lee; Dae-Jung Kim; Sungchul C. Bai