쏘가리의적정사육밀도 763, (Choi et al, 20). (Brett, 979). (Brown et al., 957; Morrissy, 992; McClain, 995; Hwang et al., 204). (Boyce et al., 998; Irwin et al.,

한수지 50(6), 762-769, 207 Original Article Korean J Fish Aquat Sci 50(6),762-769,207 사육밀도에따른쏘가리 (Siniperca scherzeri) 의성장및체조성변화 이상민 김이오 2 * 강릉원주대학교해양생물공학과, 2 충청북도내수면산업연구소 Effect of Stocking Density on the Growth and Body Composition of the Mandarin Fish Siniperca scherzeri Sang-Min Lee and Yi-Oh Kim * Department of Marine Biotechnology, Gangneung-Wonju National University, Gangneung 25457, Korea Chungcheongbuk-do Inland Fisheries Research Institute, Chungju 27329, Korea This study investigated the effects of stocking density on the growth of the mandarin fish Siniperca scherzeri, in small (-year old, 50.2 g/fish) and large (2-years old, 73. g/fish) size (age) groups. Small and large fish groups were fed pelleted diets twice daily for 0 and 5 weeks, respectively. In the small group, at the end of the feeding, the weight gain of fish at a density of 4 kg/m 3 was lower than that of fish at densities of 3, 2 and kg/m 3. However, fish stocking density did not affect feed efficiency. The daily feed intake of fish at a density of 4 kg/m 3 was lower than that fish at densities of 3, 2 and kg/m 3. In the large fish group, the weight gain of fish at a density of 4.5 kg/m 3 was higher than that of fish at densities of 6, 3 and.5 kg /m 3. Again, fish stocking density did not affect feed efficiency. The daily feed intake of fish at a density of 4.5 kg/m 3 was higher than that of fish at densities of 6, 3 and.5 kg/m 3. Based on these results, the optimum stocking density for small (50.2 g/fish) and large (73. g/fish) mandarin fish is 3 and 4.5 kg/m 3, respectively. Key words: Mandarin fish, Siniperca scherzeri, Fish size, Stocking density, Growth 서론 (Siniperca scherzeri),., (Kim et al., 988)... (Kim, 205). (Zohreh et al., 207). (Kim and Lee, 206) (Kim and Lee, 207).,.,. 26-29 (Kim and Lee, 206),,.,,, https://doi.org/0.5657/kfas.207.0762 Korean J Fish Aquat Sci 50(6) 762-769, December 207 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial Licens (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Received 2 November 207; Revised 9 December 207; Accepted 23 December 207 *Corresponding author: Tel: +82. 43. 220. 6522 Fax: +82. 43. 220. 6529 E-mail address: kimio@korea.kr Copyright 207 The Korean Society of Fisheries and Aquatic Science 762 pissn:0374-8, eissn:2287-885

쏘가리의적정사육밀도 763, (Choi et al, 20). (Brett, 979). (Brown et al., 957; Morrissy, 992; McClain, 995; Hwang et al., 204). (Boyce et al., 998; Irwin et al., 999; Rowland et al., 2006; Webb et al., 2007),.,.. 재료및방법 실험어및사육관리 (50.2 g) 2 (73. g). kg/m 3, 2 kg/m 3, 3 kg/m 3 4 kg/m 3 2 0, 2.5 kg/m 3, 3 kg/m 3, 4.5 kg/m 3 6 kg/m 3 2 5. (2,000 L) (3,000 L) 8 (24 ) [ph 6.7-7.8, DO (dissolved oxygen) 6.-7.6]. 8 L/min.,,. 실험사료 80% 20% (Table ). pellet. -25. Table. Ingredient and proximate composition of experimental diets for mandarin fish Siniperca scherzeri Ingredients (%) 어체측정및성분분석 0, 2 5, tricaine methanesulfonate (MS 222, Sigma, St. Louis, MO, USA) 00 ppm. 5 (-25 ). AOAC (995) (N 6.25) Auto Kjeldahl System (Buchi B-324/435/42, Switzerland; Metrohm 8-79/806, Swizerland), ether, 05 dry oven 6. 600 4. 혈액분석 5 ml. 7,500 rpm 0 (-70 ) (DRI-CHEM NX500i, FUJIFILM, Japan) total protein (TP), total cholesterol (TCHO), glutamic oxaloacetic transaminase (GOT), glutamic pyruvic transaminase (GPT), alkaline phosphatase (ALP), total bilirubin (TBIL) albumin (ALB). 통계분석 Small size Diets Large size Commercial diet 80 80 Fish meal 2 20 20 Chemical analysis (% of dry matter basis) Crude protein 53.9 54.7 Crude lipid 7.0 7.2 Ash 0.9.4 Commercial bind powder for eel produced from Purinafeed incorporation (Seongnam, Korea). 2 Mackeral fish meal imported from Chile containing 73% crude protein and 9% crude lipid. SPSS Ver. 20 (SPSS Inc., Chicago, IL, USA) program One-way ANOVA-test Duncan s multiple range test (Duncan, 955).

764 이상민ㆍ김이오 결과및고찰 0, Table 2 Table 3., 4 kg/m 3, 2 3 kg/m 3 (P<0.05),, 2 3 kg/m 3 (P>0.05). (P>0.05). 4 kg/m 3, 2 3 kg/m 3 (P<0.05), 4 kg/m 3, 2 3 kg/m 3 (P<0.05). 5, 2 Table 4 Table 5. 94% (P>0.05). 4.5 kg/ m 3.5 3 kg/m 3 6 kg/m 3 (P<0.05). (P>0.05). 4.5 kg/m 3.5, 3 6 kg/m 3 (P<0.05), 4.5 kg/m 3.5 3 kg/m 3 (P<0.05). (50.2 g) -3 kg/m 3 4 kg/m 3. (4 g) 30-50 /m 3 Table 2. Growth performance and feed efficiency of -year old mandarin fish Siniperca scherzeri fed experiment diet for 0 weeks Stoking density (kg/m 3 ) Initial mean weight (g) Survival (%) Final mean weight (g) Weight gain (%) 2 SGR (%/day) 3 Feed efficiency (%) 4 50.3±0.4 ns 95.0±2.0 b 9.±.65 b 36.7±2.85 b.23±0.02 b 76.8±.05 ns 2 50.4±0.60 95.0±2.0 b 20.9±2.90 b 39.8±7.80 b.25±0.05 b 78.±.5 3 50.2±0.39 95.0±.0 b 3.2±2.85 b 25.4±3.90 b.7±0.03 b 77.2±5.20 4 50.0±0.6 83.0±.0 a 00.3±.75 a 00.5±5.90 a.00±0.05 a 68.±.00 Values (mean±se of replicate groups) in the same column not sharing a common superscript are significantly different (P<0.05). 2 Weight gain (%)=(final body weight - initial body weight) 00/initial body weight. 3 SGR=(Ln final weight of fish Ln initial weight of fish) 00/ days of feeding trial. 4 Feed efficiency (%)=fish wet weight gain 00/feed intake (dry matter). ns Not significant (P>0.05). Table 3. Daily feed intake (DFI), daily protein intake (DPI) and protein efficiency ratio (PER) of -year old mandarin fish Siniperca scherzeri fed experiment diet for 0 weeks Stoking density (kg/m 3 ) DFI (%) 2 DPI (%) 3 PER(%) 4.43±0.0 b 0.72±0.0 b 2.53±0.02 a 2.43±0.05 b 0.78±0.02 b 2.55±0.07 a 3.35±0. b 0.74±0.06 b 2.65±0.2 a 4.04±0.05 a 0.57±0.03 a 3.4±0.3 b Values (mean±se of replicate groups) in the same column not sharing a common superscript are significantly different (P<0.05). 2 Daily feed intake=feed intake 00 / [(initial fish wt.+final fish wt.+dead fish wt.) days reared / 2]. 3 Daily protein intake=protein intake 00 / [(initial fish wt.+final fish wt.+dead fish wt.) days reared / 2]. 4 Protein efficiency ratio=wet weight gain / protein intake. Table 4. Growth performance and feed efficiency of 2-year old mandarin fish Siniperca scherzeri fed experiment diets for 5 weeks Stoking density (kg/m 3 ) Initial mean weight (g) Survival (%) Final mean weight (g) Weight gain (%) 2 SGR (%/day) 3 Feed efficiency (%) 4.5 73.±0.39 ns 94.0±2.00 ns 279.8±6.20 a 6.8±3.95 a 0.46±0.03 a 60.0±2.70 ns 3 73.±.42 97.0±.00 329.9±.65 b 90.6±0.50 b 0.62±0.0 b 62.4±.35 4.5 73.0±0.49 97.5±.50 368.0±3.70 d 2.7±2.80 c 0.72±0.0 c 60.5±.65 6 73.±0.4 94.0±.00 346.5±0.80 c 0.±0.35 b 0.67±0.0 b 60.0±2.20 Values (mean±se of replicate groups) in the same column not sharing a common superscript are significantly different (P<0.05). 2 Weight gain (%)=(final body weight - initial body weight) 00/initial body weight. 3 SGR=(Ln final weight of fish Ln initial weight of fish) 00/ days of feeding trial. 4 Feed efficiency (%)=Fish wet weight gain 00/feed intake (dry matter). ns Not significant (P>0.05).

쏘가리의적정사육밀도 765 60-70 /m 3 (Yi et al., 996). (Watanabe et al., 990; Ahmad et al., 999; Wallat et al., 2004), (Cruz and Ridha, 99; Yi et al., 996; Yi and Kwei Lin, 200). (4 kg/m 3 )., 2 (73. g).5-4.5 kg/m 3 6 kg/m 3 4.5 kg/m 3. 6 kg/m 3.5 kg/m 3 3 kg/m 3,, 6 kg/m 3. (54 g/fish) 30-60 /m 3 70 /m 3 (Yi et al., 996)., (Brown et al., 992; Cruze and Ridha, 99; Hargreaves et al, 99; Irwin et al., 999; Wallat et al., 2004; Watanabe et al., 990)., (Kincaid et al., 976; Lee et al., 996)., (Refstie, 977; Bjoernsson, 994), (King et al., 998; Fairchild and Howell, 200),, (Rowland et al., 2006; Watanabe et al., 990).,., (3 g) 3 kg/m 3 (Yoon et al., 2007), (3-40 g).4-3 kg/ m 3 (Choi et al., 207), (5-5 g).-.8 kg/ m 3 (MOF, 2000), (28 g) 5 kg/m 3 (Kim, 20), (44-60 g) 4.5-6 kg/m 3 (Oh et al., 203), Atlantic salmon (7 g) 86 kg/m 3 (Hosfeld et al., 2009), (80 g) 80 kg/m 3 (North et al., 2006), Atlantic cod (832 g) 30 kg/ m 3 (Lambert and Dutil, 200), red tilapia (75g) 7.5 kg/m 3 (Suresh and Kwei, 992). 3-4.5 kg/m 3, 5 kg/m 3 (Kim, 20),.4-3 kg/m 3 (Choi et al., 207),.-.8 kg/m 3 (MOF, 2000), 3 kg/m 3 (Yoon et al., 2007), (30-86 kg/m 3 ). Table 5. Daily feed intake (DFI), daily protein intake (DPI) and protein efficiency ratio (PER) of 2-year old mandarin fish Siniperca scherzeri fed experiment diet for 5 weeks Stoking density (kg/m 3 ) DFI (%) 2 DPI (%) 3 PER (%) 4.5 0.66±0.04 a 0.35±0.02 a 3.26±0.3 c 3 0.9±0.0 b 0.49±0.0 b 2.52±0.0 b 4.5.0±0.0 c 0.59±0.0 c 2.7±0.0 a 6 0.98±0.02 b 0.53±0.0 b 2.37±0.06 ab Values (mean±se of replicate groups) in the same column not sharing a common superscript are significantly different (P<0.05). 2 Daily feed intake=feed intake 00 / [(initial fish wt.+ final fish wt.+dead fish wt.) days reared / 2]. 3 Daily protein intake=protein intake 00 / [(initial fish wt.+final fish wt.+dead fish wt.) days reared / 2]. 4 Protein efficiency ratio=wet weight gain / protein intake. Table 6. Whole body proximate composition of -year old mandarin fish Siniperca scherzeri fed experiment diet for 0 weeks Stoking density (kg/m 3 ) Moisture (%) Crude protein (%) Crude lipid (%) Ash (%) 73.3±0.9 ns 9.0±0.0 ns 3.84±0.96 ns 5.±0.02 b 2 74.3±.59 7.5±0.8 3.3±.2 4.52±0.02 a 3 72.8±0.97 7.7±.02 3.77±0.2 5.37±0.3 b 4 73.±0.75 8.4±0.20 3.26±0.52 5.9±0.3 b Values (mean±se of replicate groups) in the same column not sharing a common superscript are significantly different (P<0.05). ns Not significant (P>0.05).

766 이상민ㆍ김이오. (50.2 g) (4 kg/m 3 ) 2 (73. g) (6 kg/m 3 )., (Wedemeyer, 996; Paspatis et al., 999; Rowland et al., 2006). (50.2 g) (4 kg/ m 3 ) 2 (73. g). 0 Table 6., (P>0.05). 2 kg/m 3 (P<0.05). 5 2 Table 7. Table 7. Whole body proximate composition of 2-year large mandarin fish Siniperca scherzeri fed experiment diet for 5 weeks Stoking density (kg/m 3 ) Moisture (%) Crude protein (%) Crude lipid (%) Ash (%).5 77.2±0.0 ns 5.6±0.36 a 0.66±0.0 ns.73±0.09 ns 3 76.5±0.23 7.2±.78 ab 0.92±0.20.49±0.26 4.5 76.6±0.25 7.5±.77 ab.2±0.6.59±0.6 6 76.8±0.95 2.4±0.7 b.02±0.07.56±0.04 Values (mean±se of replicate groups) in the same column not sharing a common superscript are significantly different (P<0.05). ns Not significant (P>0.05). Table 8. Plasma chemical composition of -year old mandarin fish Siniperca scherzeri fed experiment diet for 0 weeks Stoking density (kg/m 3 ) 2 3 4 TP (g/dl) 2 4.9±0.20 ns 4.5±0.20 4.±0.30 4.±0.0 Cholesterol (mg/dl), TCHO 3 407.0±4.0 ns 365±35.0 335±30.0 37±2.0 GOT (U/L) 4 33.5±3.50 ns 64.0±4.00 45.5±5.5 57.5±24.5 GPT (U/L) 5 6.0±.00 ns 6.5±0.50 7.0±.00 6.0±0.0 ALP (U/L) 6 358.5±37.5 ns 344.5±36.5 257.0±33.0 69.5±5.5 Bilirubin (mg/dl) 0.5±0.05 ns 0.5±0.05 0.50±0.0 0.50±0.0 Albumin (g/dl) 0.8±0.0 ns 0.7±0.0 0.7±0.0 0.7±0.0 Values are mean±se of replicate groups. 2 TP, Total protein. 3 TCHO, Total cholesterol. 4 GOT, Glutamic oxaloacetic transaminase. 5 GPT, Glutamic pyruvic transaminase. 6 ALP, Alkaline phosphatase. ns Not significant (P>0.05). Table 9. Plasma chemical composition of 2-year old mandarin fish Siniperca scherzeri fed experiment diet for 5 weeks Stoking density (kg/m 3 ).5 3 4.5 6 TP (g/dl) 2 3.8±0.0 ns 3.7±0.0 3.7±0.5 3.7±0.0 Cholesterol (mg/dl), TCHO 3 243.5±.50 ns 25.5±7.5 240.0±9.0 234.5±6.5 GOT (U/L) 4 8.5±4.5 ns 2.0±.00 24.5±3.50 38.5±2.50 GPT (U/L) 5 4.5±0.50 ns 4.0±0.0 4.0±0.0 5.0±0.0 ALP (U/L) 6 25.0±23.0 ns 280.0±79.0 297.5±2.5 282.5±4.5 Triglyceride (mg/dl) 500±0.0 ns 473±27.0 500±0.0 500±0.0 Bilirubin (mg/dl) 0.30±0.0 ns 0.5±0.05 0.25±0.05 0.25±0.5 Albumin (g/dl) 0.65±0.05 ns 0.60±0.0 0.60±0.0 0.60±0.0 Values are mean±se of replicate groups. 2 TP, Total protein. 3 TCHO, Total cholesterol. 4 GOT, Glutamic oxaloacetic transaminase. 5 GPT, Glutamic pyruvic transaminase. 6 ALP, Alkaline phosphatase. ns Not significant (P>0.05).

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bastes oblongus larvae. Korean J Ichthyol 9, 54-59. Zohreh S, Sanaz K, Kim YO and Lee SM. 207. Effect of dietary protein and lipid level on growth, feed utilization and muscle composition in golden mandarin fish, Siniperca scherzeri. Fish Aqu Sci, 20:7. https://doi.org/0.86/ s4240-07-0053-0. 쏘가리의적정사육밀도 769