Sustained swimming improves fish dietary nutrient assimilation efficiency and body composition of juvenile Brycon amazonicus

Arbeláez-Rojas, Gustavo Alberto; Moraes, Gilberto

doi:10.1590/1678-992x-2016-0135

Cited by 2 publications

(4 citation statements)

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“…Reports about sustained swimming as fish farm practice that allows stocking densities higher than the conventional ones are growing. This fact is reported, for example, for matrinxã [16]. However, there are no reports of the rearing of tilapia in high density under sustained swimming.…”

Section: Discussionmentioning

confidence: 94%

“…Fish living in sustained swimming are encouraged to exercise uninterruptedly, and this fact brings positive outcomes. The utilization of nutrients, for example, is enhanced in fish living under continuous exercise [11,12,13,14]. In addition, the improvement of disease resistance [14], stress reduction [14], and, consequently, an aggressiveness reduction [15,16,17] are observed in fish under sustained swimming.…”

Section: Discussionmentioning

confidence: 99%

“…The utilization of nutrients, for example, is enhanced in fish living under continuous exercise [11,12,13,14]. In addition, the improvement of disease resistance [14], stress reduction [14], and, consequently, an aggressiveness reduction [15,16,17] are observed in fish under sustained swimming. The improvement of nutrient utilization in fish living in sustained swimming results in better growth performance [3].…”

Section: Discussionmentioning

confidence: 99%

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Growth Performance of Tilapia Juveniles Oreochromis niloticus Reared in Two Sustained Swimming Speeds and Two Stocking Densities

Albeláez-Rojas,

Silva,

Ota

et al. 2024

Braz. arch. biol. technol.

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Tilapia is one of the most important aquaculture species due to the desirable characteristics as easy reproduction and quick growth in several farming systems, including the recirculating aquaculture systems RAS. In this, the high flow of water to remove waste casually stimulates the fish to swim backset, and growth performance may be improved. Increasing the speed of swimming can improve performance within certain limits, in which however if exceeded can be harmful. Fish may be exhausted leading to impaired growth or even mortality. The objective of this work was to evaluate the growth performance of tilapia juveniles under sustained swimming exercise at different speeds. Additionally, the fish stocking density effect was tested in the sustained swimming exercise condition. In the first experiment, Nile tilapia juveniles were submitted in triplicates to sustained swimming exercise in speeds of control (not exercised), 1 BL/s (body length per second), 1.5 BL/s and 2 BL/s. In the second experiment, two fish stocking densities were tested in triplicates in sustained swimming exercise in speed of 2 BL/s and control not exercised. Fish growth performance was improved by sustained swimming exercise in speeds up to 2 BL/s. No expressive fish mortalities were observed in both experiments. The comparison between the two stocking densities does not allow us to safely say tilapia can be reared at stocking densities in order of 1,000 fish/m3, even under sustained swimming exercise. Other densities need to be tested. HIGHLIGHTS •The high flow of water stimulates sustained swimming exercise of fish.• Sustained swimming speed of 2 body length per second enhanced fish growth.• Fish yield in sustained swimming exercise was 3.6 times higher than no exercised fish.• Tilapia are fish inhabiting shallow ponds and lakes but, the artificial sustained swimming exercise promotes better growth.

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Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Growth Performance of Tilapia Juveniles Oreochromis niloticus Reared in Two Sustained Swimming Speeds and Two Stocking Densities

Albeláez-Rojas,

Silva,

Ota

et al. 2024

Braz. arch. biol. technol.

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“…However, the greatest obstacle in the production of this species is the low supply of fingerlings due to their own reproductive characteristics. The species presents rheophilic behavior with spawning only in the months of October to February, therefore limiting the production of larvae to a short period of time [18]. They also show a marked behavior of cannibalism during the first 48 h of life.…”

Section: Introductionmentioning

confidence: 99%

Larviculture of Brycon amazonicus under Different Food and Farming Systems

Arbeláez-Rojas,

Melão

2023

Aquaculture Journal

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Freshwater fish larviculture techniques still have deficiencies in cultivation and feeding. In this study, we evaluated experimentally different cultivation and feeding systems in the Brycon amazonicus (matrinxã) larviculture. Seven treatments with different live foods were used: T1 = a semi-intensive mesocosm system with green water; T2 = a clear water system containing Artemia sp. as food; T3 = a clear water system containing Dendrocephalus brasiliensis as food; T4 = a clear water system containing a combination of Artemia sp. and D. brasiliensis as food (a proportion of 1:1); T5, T6 and T7 were the same as T2, T3 and T4, respectively, but with a swimming exercise system. During the experiment, the water quality parameters were measured and maintained suitably for the cultures. The highest values of final weight (42.97 ± 2.58 mg) and specific growth rate (31.77 ± 0.60%) were observed in T5 (p < 0.05). Regarding the nutritional composition, the larvae of B. amazonicus that were fed nauplii of D. brasiliensis had a better profile of amino acids and essential fatty acids than those fed other live foods. Therefore, nauplii of D. brasiliensis can be used as an adequately nutritional food for larvae of B. amazonicus.

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Sustained swimming improves fish dietary nutrient assimilation efficiency and body composition of juvenile Brycon amazonicus

Abstract: Sustained swimming (SS) usually promotes beneficial effects in growth and feed conversion of fishes. Although feed efficiency is improves at moderate water velocity, more information is required to determine the contributions of this factor on growth and body com-

Cited by 2 publications

References 29 publications

Growth Performance of Tilapia Juveniles Oreochromis niloticus Reared in Two Sustained Swimming Speeds and Two Stocking Densities

Growth Performance of Tilapia Juveniles Oreochromis niloticus Reared in Two Sustained Swimming Speeds and Two Stocking Densities

Larviculture of Brycon amazonicus under Different Food and Farming Systems

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