Effects of light intensity and photoperiod on the growth performance of juvenile Murray cods (Maccullochella peelii) in recirculating aquaculture system (RAS)
Murray cod (Maccullochella peelii) is a freshwater percichthyid fish that has a high market value and potential for culture in recirculating aquaculture systems (RASs). Illumination is an important environmental factor that affects the growth and physiological condition of fishes. A comprehensive un...
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KeAi Communications Co., Ltd.
2023-05-01
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| Series: | Aquaculture and Fisheries |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468550X21001659 |
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| author | Zhengkai Di Kang Li Tiezhu Li Li Yan Haofei Jiang Liping Liu |
| author_facet | Zhengkai Di Kang Li Tiezhu Li Li Yan Haofei Jiang Liping Liu |
| author_sort | Zhengkai Di |
| collection | DOAJ |
| description | Murray cod (Maccullochella peelii) is a freshwater percichthyid fish that has a high market value and potential for culture in recirculating aquaculture systems (RASs). Illumination is an important environmental factor that affects the growth and physiological condition of fishes. A comprehensive understanding of the relationship between the light factors and the growth, nutrient composition and stress response of juvenile Murray cod in RAS is important to achieve satisfactory theoretical and practical aquaculture performance. Juvenile Murray cod were randomly assigned to nine RAS tanks with a volume of 1.5 m3, with each tank containing 120 fishes (3.5 ± 0.5g). The fish were cultured for 120 days under different light intensities (1200, 2400, and 3600 lx) and photoperiods (12L: 12D, 18L: 6D and 24L: 0D). The results showed that the final weight and feed conversion ratio of Murray cod under a light intensity of 1200 lx were significantly better than those under 3600 lx (P < 0.05). The serum total protein and globulin were higher at the light intensity of 1200lx, compared to other light intensities. The blood urea nitrogen level improved with increasing light intensity at LD12:12 and LD18:6 of photoperiod, as well as the superoxide dismutase level improved significantly from LD18:6 to LD24:0 of photoperiod. The findings indicated that the optimal light condition to enhance growth at juvenile stage is 1200 lx of the light intensity and LD18:6 of the photoperiod. |
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| id | doaj.art-6d15b5e3d40f47d49330420f6a37c376 |
| institution | Directory Open Access Journal |
| issn | 2468-550X |
| language | English |
| last_indexed | 2024-04-24T08:30:07Z |
| publishDate | 2023-05-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Aquaculture and Fisheries |
| spelling | doaj.art-6d15b5e3d40f47d49330420f6a37c3762024-04-16T20:01:14ZengKeAi Communications Co., Ltd.Aquaculture and Fisheries2468-550X2023-05-0183274279Effects of light intensity and photoperiod on the growth performance of juvenile Murray cods (Maccullochella peelii) in recirculating aquaculture system (RAS)Zhengkai Di0Kang Li1Tiezhu Li2Li Yan3Haofei Jiang4Liping Liu5National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, ChinaNational Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai, 201306, China; International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, Shanghai, 201306, ChinaNational Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, ChinaNational Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, ChinaNational Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, ChinaNational Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai, 201306, China; International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, Shanghai, 201306, China; Corresponding author. National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China.Murray cod (Maccullochella peelii) is a freshwater percichthyid fish that has a high market value and potential for culture in recirculating aquaculture systems (RASs). Illumination is an important environmental factor that affects the growth and physiological condition of fishes. A comprehensive understanding of the relationship between the light factors and the growth, nutrient composition and stress response of juvenile Murray cod in RAS is important to achieve satisfactory theoretical and practical aquaculture performance. Juvenile Murray cod were randomly assigned to nine RAS tanks with a volume of 1.5 m3, with each tank containing 120 fishes (3.5 ± 0.5g). The fish were cultured for 120 days under different light intensities (1200, 2400, and 3600 lx) and photoperiods (12L: 12D, 18L: 6D and 24L: 0D). The results showed that the final weight and feed conversion ratio of Murray cod under a light intensity of 1200 lx were significantly better than those under 3600 lx (P < 0.05). The serum total protein and globulin were higher at the light intensity of 1200lx, compared to other light intensities. The blood urea nitrogen level improved with increasing light intensity at LD12:12 and LD18:6 of photoperiod, as well as the superoxide dismutase level improved significantly from LD18:6 to LD24:0 of photoperiod. The findings indicated that the optimal light condition to enhance growth at juvenile stage is 1200 lx of the light intensity and LD18:6 of the photoperiod.http://www.sciencedirect.com/science/article/pii/S2468550X21001659Murray codLight intensityPhotoperiodGrowth |
| spellingShingle | Zhengkai Di Kang Li Tiezhu Li Li Yan Haofei Jiang Liping Liu Effects of light intensity and photoperiod on the growth performance of juvenile Murray cods (Maccullochella peelii) in recirculating aquaculture system (RAS) Aquaculture and Fisheries Murray cod Light intensity Photoperiod Growth |
| title | Effects of light intensity and photoperiod on the growth performance of juvenile Murray cods (Maccullochella peelii) in recirculating aquaculture system (RAS) |
| title_full | Effects of light intensity and photoperiod on the growth performance of juvenile Murray cods (Maccullochella peelii) in recirculating aquaculture system (RAS) |
| title_fullStr | Effects of light intensity and photoperiod on the growth performance of juvenile Murray cods (Maccullochella peelii) in recirculating aquaculture system (RAS) |
| title_full_unstemmed | Effects of light intensity and photoperiod on the growth performance of juvenile Murray cods (Maccullochella peelii) in recirculating aquaculture system (RAS) |
| title_short | Effects of light intensity and photoperiod on the growth performance of juvenile Murray cods (Maccullochella peelii) in recirculating aquaculture system (RAS) |
| title_sort | effects of light intensity and photoperiod on the growth performance of juvenile murray cods maccullochella peelii in recirculating aquaculture system ras |
| topic | Murray cod Light intensity Photoperiod Growth |
| url | http://www.sciencedirect.com/science/article/pii/S2468550X21001659 |
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