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| Effect of stocking density on performances of juvenile turbot (Scophthalmus maximus) in recirculating aquaculture systems | |
Li Xian1,2; Liu Ying1 ; Blancheton, Jean-Paul3,4; Liu, Y
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| 2013-05-01 | |
| 发表期刊 | CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
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| ISSN | 0254-4059 |
| 卷号 | 31期号:3页码:514-522 |
| 文章类型 | Article |
| 摘要 | Limited information has been available about the influence of loading density on the performances of Scophthalmus maximus, especially in recirculating aquaculture systems (RAS). In this study, turbot (13.84 +/- 2.74 g; average weight +/- SD) were reared at four different initial densities (low 0.66, medium 1.26, sub-high 2.56, high 4.00 kg/m(2)) for 10 weeks in RAS at 23 +/- 1A degrees C. Final densities were 4.67, 7.25, 14.16, and 17.47 kg/m(2), respectively, which translate to 82, 108, 214, and 282 percent coverage of the tank bottom. Density had both negative and independent impacts on growth. The final mean weight, specific growth rate (SGR), and voluntary feed intake significantly decreased and the coefficient of variation (CV) of final body weight increased with increase in stocking density. The medium and sub-high density groups did not differ significantly in SGR, mean weight, CV, food conversion rate (FCR), feed intake, blood parameters, and digestive enzymes. The protease activities of the digestive tract at pH 7, 8.5, 9, and 10 were significantly higher for the highest density group, but tended to be lower (not significantly) at pH 4 and 8.5 for the lowest density group. The intensity of protease activity was inversely related to feed intake at the different densities. Catalase activity was higher (but not significantly) at the highest density, perhaps because high density started to induce an oxidative effect in turbot. In conclusion, turbot can be cultured in RAS at a density of less than 17.47 kg/m(2). With good water quality and no feed limitation, initial density between 1.26 and 2.56 kg/m(2) (final: 7.25 and 14.16 kg/m(2)) would not negatively affect the turbot cultured in RAS. For culture at higher density, multi-level feeding devices are suggested to ease feeding competition.; Limited information has been available about the influence of loading density on the performances of Scophthalmus maximus, especially in recirculating aquaculture systems (RAS). In this study, turbot (13.84 +/- 2.74 g; average weight +/- SD) were reared at four different initial densities (low 0.66, medium 1.26, sub-high 2.56, high 4.00 kg/m(2)) for 10 weeks in RAS at 23 +/- 1A degrees C. Final densities were 4.67, 7.25, 14.16, and 17.47 kg/m(2), respectively, which translate to 82, 108, 214, and 282 percent coverage of the tank bottom. Density had both negative and independent impacts on growth. The final mean weight, specific growth rate (SGR), and voluntary feed intake significantly decreased and the coefficient of variation (CV) of final body weight increased with increase in stocking density. The medium and sub-high density groups did not differ significantly in SGR, mean weight, CV, food conversion rate (FCR), feed intake, blood parameters, and digestive enzymes. The protease activities of the digestive tract at pH 7, 8.5, 9, and 10 were significantly higher for the highest density group, but tended to be lower (not significantly) at pH 4 and 8.5 for the lowest density group. The intensity of protease activity was inversely related to feed intake at the different densities. Catalase activity was higher (but not significantly) at the highest density, perhaps because high density started to induce an oxidative effect in turbot. In conclusion, turbot can be cultured in RAS at a density of less than 17.47 kg/m(2). With good water quality and no feed limitation, initial density between 1.26 and 2.56 kg/m(2) (final: 7.25 and 14.16 kg/m(2)) would not negatively affect the turbot cultured in RAS. For culture at higher density, multi-level feeding devices are suggested to ease feeding competition. |
| 关键词 | Turbot Stocking Density Growth Protease Activity |
| 学科领域 | Marine & Freshwater Biology ; Oceanography |
| DOI | 10.1007/s00343-013-2205-0 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Marine & Freshwater Biology ; Oceanography |
| WOS类目 | Limnology ; Oceanography |
| WOS记录号 | WOS:000318719700005 |
| WOS关键词 | TROUT ONCORHYNCHUS-MYKISS ; FEEDING-BEHAVIOR ; RAINBOW-TROUT ; APOSTICHOPUS-JAPONICUS ; OXIDATIVE STRESS ; GROWTH ; FISH ; WATER ; CATFISH ; WELFARE |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/16469 |
| 专题 | 海洋生态与环境科学重点实验室 海洋生物技术研发中心 |
| 通讯作者 | Liu, Y |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Biotechnol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.IFREMER, F-34250 Palavas Les Flots, France 4.USTL, UMR Ecosym, F-34000 Montpellier, France |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Li Xian,Liu Ying,Blancheton, Jean-Paul,et al. Effect of stocking density on performances of juvenile turbot (Scophthalmus maximus) in recirculating aquaculture systems[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2013,31(3):514-522. |
| APA | Li Xian,Liu Ying,Blancheton, Jean-Paul,&Liu, Y.(2013).Effect of stocking density on performances of juvenile turbot (Scophthalmus maximus) in recirculating aquaculture systems.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,31(3),514-522. |
| MLA | Li Xian,et al."Effect of stocking density on performances of juvenile turbot (Scophthalmus maximus) in recirculating aquaculture systems".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 31.3(2013):514-522. |
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