Effects of water flow rates on growth and welfare of Nile tilapia (Oreochromis niloticus) reared in a recirculating aquaculture system

Obirikorang, Kwasi Adu; Agbo, Nelson Winston; Obirikorang, Christian; Adjei-Boateng, Daniel; Ahiave, Sefakor Esinam; Skov, Peter Vilhelm

doi:10.1007/s10499-019-00342-0

Cited by 22 publications

(29 citation statements)

References 46 publications

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“…It can be seen that rearing juvenile largemouth bass at HF velocity can improve their growth while maintaining feed utilization. This is consistent with the results of Kwasi et al (2019) and Sun et al (2016). However, they failed to rule out interference other than flow velocity in their studies.…”

Section: Ta B L E 1 Effect Of Flow Velocity On Growth Parameterssupporting

confidence: 88%

“…Not only in swimming behaviour, the flow velocity also affects the physiological and biochemical features of rearing objects (Schram et al, 2009). Kwasi et al (2019) studied the effect of flow rate on the growth and welfare of tilapia. They found that the ammonia nitrogen content of water with a low flow (LF) rate (90 L/h) significantly increased, and the ratio of oral diseases was much higher than that of the high flow (HF) rate group (360 L/h).…”

Section: Introductionmentioning

confidence: 99%

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Effects of flow velocity on growth and physiology of juvenile largemouth bass ( Micropterus salmoides ) in recirculating aquaculture systems

Chen

et al. 2021

Aquaculture Research

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The cultivation of largemouth bass (Micropterus salmoides) in recirculating aquaculture systems (RAS) has become a growing trend. To ensure the welfare of juvenile largemouth bass in RAS, the effects of different flow velocities on their growth and physiology were explored, considering the flow velocity in real production. Following the stable water quality, juvenile largemouth bass with a body mass of 1.92 ± 0.38 g and body length of 4.50 ± 0.36 cm were reared at three different flow velocities of high flow (HF, 18 cm/s, 4.00 bl/s), middle flow (11 cm/s, 2.45 bl/s, actual average flow velocity of aquaculture) and low flow (4 cm/s, 0.90 bl/s) respectively. The whole experiment lasted 66 days. Results showed that different flow velocities had significant effects on the growth, digestive enzyme activities, antioxidant capabilities and immune capabilities of juvenile largemouth bass. HF can significantly increase the cumulative food intake, hepatosomatic index, weight gain rate, specific growth rate and condition factor of largemouth bass juveniles (p < 0.05). Flow velocity had no significant effect on feed conversion rate (p > 0.05), but the mean of feed conversion rate in HF group was the lowest. Under the HF condition, the activities of trypsin and amylase increased significantly (p < 0.05). For lipase activity, although no significant differences were observed between groups (p > 0.05), the mean of lipase activity increased as the flow velocity increased. With regard to the antioxidant and immune capacity, the malondialdehyde content in HF group significantly decreased (p < 0.05), and the immunoglobulin M content significantly increased (p < 0.05). From the above, following the HF velocity condition, fish growth, oxidative defence, immune capacity and digestive capacity could be improved to a large extent. To achieve higher growth, it is recommended circulating flow velocity of no less than 18 cm/s in largemouth bass at the juvenile stage (approximately 1.9-37.5 g and 4.5-14.5 cm long).

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Section: Ta B L E 1 Effect Of Flow Velocity On Growth Parameterssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Effects of flow velocity on growth and physiology of juvenile largemouth bass ( Micropterus salmoides ) in recirculating aquaculture systems

Chen

et al. 2021

Aquaculture Research

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“…A minimal water exchange (biweekly) possibly allowed substances to accumulate in the aquaponic system which in turn affected the growth of fish. Reduced growth rates of Nile tilapia in low water exchange recirculating systems were also reported (Obirikorang et al 2019). Obirikorang et al (2019) concluded that, although Nile tilapia is described as a hardy fish because it can tolerate a wide range of culture conditions, long-term exposure to poor culture conditions can result in reduced growth rates and poor health.…”

Section: Discussionmentioning

confidence: 95%

“…Reduced growth rates of Nile tilapia in low water exchange recirculating systems were also reported (Obirikorang et al 2019). Obirikorang et al (2019) concluded that, although Nile tilapia is described as a hardy fish because it can tolerate a wide range of culture conditions, long-term exposure to poor culture conditions can result in reduced growth rates and poor health. The slight difference between the standard growth performance indices including weight gain and specific growth rate (SGR) and the VBGF parameters (asymptotic weight, maximum growth rate and slope of regression curve) is attributed to the data used to compute the parameters (Hopkins 1992;Lugert et al 2014).…”

Section: Discussionmentioning

confidence: 95%

Efficiency of pumpkin (Cucurbita pepo), sweet wormwood (Artemisia annua) and amaranth (Amaranthus dubius) in removing nutrients from a smallscale recirculating aquaponic system

et al. 2019

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In aquaponic systems, plants absorb dissolved nutrients from aquaculture wastewater for their growth. The removal of nutrients allows reuse of water and minimises wastewater discharge to the surrounding environment. This study evaluated the relative nutrient removal efficiencies of three plant species and the performance of Nile tilapia (Oreochromis niloticus) in a small-scale aquaponic system. Three aquaponic systems were assigned as treatments PU (pumpkin), SW (sweet wormwood) and AM (amaranth). Physical-chemical water quality parameters were measured in the fish tanks as well as hydroponic inlets and outlets. Fish sampling was done every 2 weeks for 60 days. Results showed significantly (p < 0.05) lower nutrient concentrations in the hydroponic outlets than the inlets. There was no significant difference in nutrient removal efficiency of the plants (p > 0.05) for all the tested nutrients except for phosphorus. Phosphorus removal was substantially high in PU (75.5 ± 16.8%) than SW (47.36 ± 14.5%) and AM (40.72 ± 13.2%). In addition, the SW system had better (p < 0.05) relative growth rate (0.06 ± 0.00) than that of PU (0.05 ± 0.00) and AM (0.05 ± 0.00). Nitrogen and phosphorus content in plant tissues was significantly high (p < 0.05) in SW and PU plants respectively. Water quality parameters had a significant influence on the growth of fish (p < 0.05). The growth of fish was not different (p > 0.05) in the three treatments. The findings indicate that the tested plants can reduce nutrients in aquaculture discharge water.

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“…Intensive fish culture in repurposed shipping containers is a promising and thriving technique as it is not constrained by water resources and environmental factors, and facilitates the control of temperature, dissolved oxygen and inorganic nutrient content during the culture process (Daniels et al., 2015; Halswell et al., 2018; Li & Lv, 2017). Genetically improved, farmed tilapia (GIFT; Oreochromis niloticus ), with high resistance, yield, and adaptability, are a promising source of white‐meat protein in large quantities and at low cost (Dawood et al., 2020; Obirikorang et al., 2019; Valladao et al., 2019). In order to further improve the yield and profitability, the stocking/feeding density of intensive aquaculture has been continuously increased, but this will cause crowding stress, affect the physiological homeostasis of fish, and make fish more prone to disease (Ellison et al., 2018; Telli et al., 2014).…”

Section: Introductionmentioning

confidence: 99%

Effects of Clostridium butyricum on growth, digestive enzyme activity, antioxidant capacity and gut microbiota in farmed tilapia ( Oreochromis niloticus )

Zhang

Dong

Lai

et al. 2020

Aquaculture Research

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The effects of a commercial probiotic (Clostridium butyricum) on growth, gut microbiota, digestion‐related enzyme activity, antioxidant capacity and water quality in genetically improved, farmed tilapia (GIFT; Oreochromis niloticus) were assessed in a closed‐circuit, container culture system. A basal diet containing commercially available C. butyricum at 3.0 × 1010, 1.5 × 1011 and 3.0 × 1011 CFU/kg, and a control diet were fed to tilapia fries for 90 days. Growth performances and water quality were improved by probiotic treatment. Activities of digestive enzymes (amylase, lipase and trypsin) were improved, especially with 1.5 × 1011 CFU/kg (p < 0.05). After feeding for 45 days and 90 days, antioxidant capacity in the liver, spleen and head kidney, and the plasma immunity in the treatment groups improved. The analysis of 16S rRNA indicated that C. butyricum did not significantly increase its abundance in the hindgut, but could modulate gut microbial communities and significantly increase functions relating to nitrogen metabolism, phosphorylation and proteinases. These results support the administration of C. butyricum, especially at 1.5 × 1011 CFU/kg. As a probiotic for high‐density tilapia, C. butyricum improves water quality, growth performance, antioxidant capacity and the immune response of GIFT under crowding stress.

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Effects of water flow rates on growth and welfare of Nile tilapia (Oreochromis niloticus) reared in a recirculating aquaculture system

Cited by 22 publications

References 46 publications

Effects of flow velocity on growth and physiology of juvenile largemouth bass ( Micropterus salmoides ) in recirculating aquaculture systems

Effects of flow velocity on growth and physiology of juvenile largemouth bass ( Micropterus salmoides ) in recirculating aquaculture systems

Efficiency of pumpkin (Cucurbita pepo), sweet wormwood (Artemisia annua) and amaranth (Amaranthus dubius) in removing nutrients from a smallscale recirculating aquaponic system

Effects of Clostridium butyricum on growth, digestive enzyme activity, antioxidant capacity and gut microbiota in farmed tilapia ( Oreochromis niloticus )

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