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Dive into the research topics where Gun-Jun Park is active.

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Featured researches published by Gun-Jun Park.


Asian-australasian Journal of Animal Sciences | 2015

Evaluation of Optimum Dietary Threonine Requirement by Plasma Free Threonine and Ammonia Concentrations in Surgically Modified Rainbow Trout, Oncorhynchus mykiss

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

Dietary dehulled soybean meal as a replacement for fish meal in fingerling and growing olive flounder Paralichthys olivaceus (Temminck et Schlegel)

Se-Min Choi; Xiaojie Wang; Gun-Jun Park; Sung-Ryul Lim; Kang-Woong Kim; Sungchul C. Bai; In-Soo Shin


Aquaculture Research | 2004

Evaluation of optimum dietary protein‐to‐energy ratio in juvenile olive flounder Paralichthys olivaceus (Temminck et Schlegel)

Kang-Woong Kim; Xiaojie Wang; Se-Min Choi; Gun-Jun Park; Sungchul C. Bai


Aquaculture Research | 2003

No synergistic effects by the dietary supplementation of ascorbic acid, α‐tocopheryl acetate and selenium on the growth performance and challenge test of Edwardsiella tarda in fingerling Nile tilapia, Oreochromis niloticus L.

Kang-Woong Kim; Xiaojie Wang; Se-Min Choi; Gun-Jun Park; Ja-Wan Koo; Sungchul C. Bai


Journal of The World Aquaculture Society | 2007

Reevaluation of the Dietary Protein Requirements and Optimum Dietary Protein to Energy Ratios in Japanese Eel, Anguilla japonica

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

Evaluation of l‐ascorbyl‐2‐glucose as the source of vitamin C for juvenile Korean rockfish Sebastes schlegeli (Hilgendorf)

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

Effects of the Dietary β-1,3 Glucan on Growth, Hematological and Body Composition in Juvenile Korean rockfish (Sebastes schlegeli)

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

Effects of Dietary Wood Vinegar Supplementation on Growth and Immune Responses of Juvenile Olive Flounder, Paralichthys olivaceus

Seunghyung Lee; Gun-Jun Park; Sungchul C. Bai


Asian-australasian Journal of Animal Sciences | 2005

Post Prandial Plasma Free Arginine Concentrations Increase in Rainbow Trout Fed Arginine-deficient Diets

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

Evaluation of optimum dietary vitamin E requirements using DL‐α‐tocopheryl acetate in the juvenile eel, Anguilla japonica

Ju-Yoon Bae; Gun-Jun Park; Kwang-Yeol Yoo; Jeong-Yeol Lee; Dae-Jung Kim; Sungchul C. Bai

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Sungchul C. Bai

Pukyong National University

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Kang-Woong Kim

National Fisheries Research

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Se-Min Choi

National Fisheries Research

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Xiaojie Wang

Pukyong National University

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Hyeonho Yun

Pukyong National University

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Seunghyung Lee

Pukyong National University

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Young Chul Kim

Pukyong National University

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Imho Ok

Pukyong National University

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Kumar Katya

Pukyong National University

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