Effects of stocking density on the growth and flesh quality of rainbow trout (Oncorhynchus mykiss) reared in a low-tech aquaponic system

Birolo, Marco; Bordignon, Francesco; Trocino, A.; Fasolato, Luca; Pascual, A.; Godoy, Sergio; Nicoletto, Carlo; Maucieri, Carmelo; Xiccato, Gerolamo

doi:10.1016/j.aquaculture.2020.735653

Cited by 26 publications

(28 citation statements)

References 58 publications

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“…With improvements in people's living standards, consumers have begun to exhibit a greater desire for high-quality fish ( Liu et al., 2020 ). The flesh quality of muscle, which is the main edible part of the fish, is not only affected by the internal factors of the fish, such as strain ( Johnston et al., 2006 ) and size ( Shearer, 1994 ), but also by external factors, such as feed ( Sun et al., 2018 ; Zhao et al., 2019 ), feeding strategy ( Lv et al., 2018 ; Imsland et al., 2020 ), temperature ( López-Albors et al., 2008 ), density ( Álvarez et al., 2020 ; Birolo et al., 2020 ; Silva et al., 2020 ), salinity ( Cheng et al., 2020 ), dissolved oxygen ( Zuanazzi et al., 2019 ), and other environmental factors. The levels of nutrients, such as mineral elements ( Zhang et al., 2016a ), fatty acids ( Li, 2020a ), amino acids ( Cai et al., 2018 ), and proteins ( Zhang et al., 2016b ) in feed, along with the source of protein ( Wang et al., 2017 ), play an important role in regulating flesh quality.…”

Section: Introductionmentioning

confidence: 99%

Flesh quality of hybrid grouper (Epinephelus fuscoguttatus ♀ × Epinephelus lanceolatus ♂) fed with hydrolyzed porcine mucosa-supplemented low fishmeal diet

et al. 2022

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Iso-nitrogenous and iso-lipidic diets containing 0%, 3%, 6%, 9%, and 12% hydrolyzed porcine mucosa (namely, HPM0, HPM3, HPM6, HPM9, and HPM12) were prepared to evaluate their effects on the growth performance, muscle nutrition composition, texture property, and gene expression related to muscle growth of hybrid groupers ( Epinephelus fuscoguttatus ♀ × Epinephelus lanceolatus ♂). Groupers were fed to apparent satiation at 08:00 and 16:00 every day for a total of 56 days. It was found that the weight gain percentage in the HPM0, HPM3, and HPM6 groups did not differ ( P > 0.05). The cooking loss and drip loss of the dorsal muscle in the HPM3 group were lower than those in the HPM6 and HPM9 groups ( P < 0.05). The hardness and chewiness of the dorsal muscle in the HPM3 group were higher than those in the HPM0, HPM9, and HPM12 groups ( P < 0.05). The gumminess in the HPM3 group was higher than that in the HPM9 and HPM12 groups ( P < 0.05). The total essential amino acid content of the dorsal muscle in the HPM12 group was higher than that in the HPM0 group ( P < 0.05). The contents of total n-3 polyunsaturated fatty acid and total n-3 highly unsaturated fatty acid, as well as the ratio of n-3/n-6 polyunsaturated fatty acid in the dorsal muscle was higher in the HPM0 group than in all other groups ( P < 0.05). The relative expressions of gene myogenic factor 5, myocyte enhancer factor 2c, myocyte enhancer factor 2a, myosin heavy chain, transforming growth factor-beta 1 ( TGF - β1 ), and follistatin ( FST ) were the highest in the dorsal muscle of the HPM3 group. The results indicated that the growth performance of hybrid grouper fed a diet with 6% HPM and 27% fish meal was as good as that of the HPM0 group. When fish ingested a diet containing 3% HPM, the expression of genes TGF-β1 and FST involved in muscle growth were upregulated, and then the muscle quality related to hardness and chewiness were improved. An appropriate amount of HPM could be better used in grouper feed.

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Section: Introductionmentioning

confidence: 99%

Flesh quality of hybrid grouper (Epinephelus fuscoguttatus ♀ × Epinephelus lanceolatus ♂) fed with hydrolyzed porcine mucosa-supplemented low fishmeal diet

et al. 2022

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“…Rainbow trout is a desirable fish for anglers and consumers, and it is also preferred for farming because of its high-quality flesh, high survival, ability to be fed on pellets, and tolerance to temperatures as high as 21 °C [ 34 ]. Additionally, it is capable of being stocked in high raceway/tank densities and possesses great growth rates since it reaches a marketable size in less than a year [ 36 ].…”

Section: Rainbow Trout Farming Biological Aspects and Effects Of Clim...mentioning

confidence: 99%

“…The integration of the two aquaculture systems makes them largely non-consumer and non-polluting users of the water resources [ 221 ]. According to already performed experiments, rainbow trout in aquaponics is bred in round plastic or stainless-steel tanks [ 36 ]. Additionally, tanks should be covered with a net to prevent fish escape and exogenous factors’ entrance (i.e., leaves) and for protection from various predators [ 52 ] ( Figure 6 ).…”

Section: The Potential Of Rainbow Trout Farming In Aquaponicsmentioning

confidence: 99%

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Aquaponics as a Promising Strategy to Mitigate Impacts of Climate Change on Rainbow Trout Culture

Vasdravanidis

Alvanou

Lattos

et al. 2022

Animals

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The impact of climate change on both terrestrial and aquatic ecosystems tends to become more progressively pronounced and devastating over the years. The sector of aquaculture is severely affected by natural abiotic factors, on account of climate change, that lead to various undesirable phenomena, including aquatic species mortalities and decreased productivity owing to oxidative and thermal stress of the reared organisms. Novel innovative technologies, such as aquaponics that are based on the co-cultivation of freshwater fish with plants in a sustainable manner under the context of controlled abiotic factors, represent a promising tool for mitigating the effect of climate change on reared fish. The rainbow trout (Oncorhynchus mykiss) constitutes one of the major freshwater-reared fish species, contributing to the national economies of numerous countries, and more specifically, to regional development, supporting mountainous areas of low productivity. However, it is highly vulnerable to climate change effects, mainly due to the concrete raceways, in which it is reared, that are constructed on the flow-through of rivers and are, therefore, dependent on water’s physical properties. The current review study evaluates the suitability, progress, and challenges of developing innovative and sustainable aquaponic systems to rear rainbow trout in combination with the cultivation of plants. Although not commercially developed to a great extent yet, research has shown that the rainbow trout is a valuable experimental model for aquaponics that may be also commercially exploited in the future. In particular, abiotic factors required in rainbow trout farming along, with the high protein proportion required in the ratios due to the strict carnivorous feeding behavior, result in high nitrate production that can be utilized by plants as a source of nitrogen in an aquaponic system. Intensive farming of rainbow trout in aquaponic systems can be controlled using digital monitoring of the system parameters, mitigating the obstacles originating from extreme temperature fluctuations.

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“…Floating raft techniques. Aquaponics is a highly sustainable aqua-agricultural method, as it requires only a few inputs and maintenance, like lter cleaning and sh feeding (Birolo et al 2020). The primary advantages of the aquaponics -culture is its environmentally friendly -nature and which requires only very little power and water.…”

Section: Introductionmentioning

confidence: 99%

Standardization of the novel aquaponic system for the production of Tilapia fish Oreochromis niloticus integrated with Millet (Brassica nigra) and Mustard (Pennisetum glaucum) plant: A sustainable approach to reduce the water scarcity through recirculating aquaculture system

Jayaprakash

Muthuselvam

Devi

et al. 2022

Preprint

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The present study has shown that the aquaponics system provides certain environmental benefits when compared to the traditional agriculture systems. Presently, the low-cost small scale aquaponics system was standardised by Nutrient Film Technique. The water quality characteristics of Nutrient Film Technique (NFT) were stable as per the USEPA regulations. The values of the growth and weight gain features of millet and mustard plants at different days were significantly different (p<0.05). Growth rate was gradually increased significantly (p<0.01) during different culture periods. The ANOVA results revealed the recorded biochemical-values of NFT -raised organisms exhibited a less significance (p<0.04). The biochemical contents of millet plant showed significantly decreased values (p<0.03). The mean±SD values represents the NFT system plant growth exhibited an increased (p<0.05) significantly different with control. The NFT technique grown millet and mustard plants showed increased (p<0.05) significantly different with control experiment grown plants. Chlorophyll ‘a’ was high (8.17mg) in NFT and low (2.34mg) in control. Maximum chlorophyll ‘b’ content was 8.45mg in plants experiment with NFT and minimum obtained (0.84mg) in control. Carotenoid content was high 707mg in plants grown through NFT followed by low content (239mg) in control-plant. In addition, NFT system has obtained maximum number of colonies compared with control. Further investigation and implementation of alternative food systems could be a step in increasing local food production, and shifting away from the industrial global food market.

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Effects of stocking density on the growth and flesh quality of rainbow trout (Oncorhynchus mykiss) reared in a low-tech aquaponic system

Cited by 26 publications

References 58 publications

Flesh quality of hybrid grouper (Epinephelus fuscoguttatus ♀ × Epinephelus lanceolatus ♂) fed with hydrolyzed porcine mucosa-supplemented low fishmeal diet

Flesh quality of hybrid grouper (Epinephelus fuscoguttatus ♀ × Epinephelus lanceolatus ♂) fed with hydrolyzed porcine mucosa-supplemented low fishmeal diet

Aquaponics as a Promising Strategy to Mitigate Impacts of Climate Change on Rainbow Trout Culture

Standardization of the novel aquaponic system for the production of Tilapia fish Oreochromis niloticus integrated with Millet (Brassica nigra) and Mustard (Pennisetum glaucum) plant: A sustainable approach to reduce the water scarcity through recirculating aquaculture system

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