Feeding rate and feeding frequency affect growth performance of common snook (Centropomus undecimalis) juveniles reared in the laboratory

Oliveira, Ricardo Luís Mendes de; Santos, Leilane Bruna Gomes dos; Neto, Nelson Gomes da Silva; Silva, Scarlatt Paloma Alves da; Silva, Felipe dos Santos; Melatti, Enrique; Cavalli, Ronaldo Olivera

doi:10.1590/rbz4820170292

Cited by 4 publications

(3 citation statements)

References 30 publications

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“…Total amount of feed offered (TAFO; g) was recorded for each treatment, and the AFCR (dry g/wet weight g) was calculated based on the equation recommended by Oliveira et al. (2019):

AFCR = \frac{TAFO}{((), WG goodbreak\times n)},

where n is the number of individuals per tank.…”

Section: Methodsmentioning

confidence: 99%

Effects of Chronic Ammonia Exposure on Growth of Genetically Improved Farmed Tilapia (GIFT) Cultured Under Different Densities

2022

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Tilapia are among the most widely cultivated fish species in the world, with a high level of importance for freshwater fish production. An important tilapia variety for the international market is genetically improved farmed tilapia (GIFT; Nile Tilapia Oreochromis niloticus). Multiple studies have been developed to determine the maximum concentrations of ammonia (NH 3 ) recommended for the cultivation of various varieties of tilapia; however, there are no specific data for the cultivation of GIFT. Growth results for GIFT fry exposed to NH 3 at 0.50, 0.89, and 1.58 mg/L in 69-d chronic toxicity tests were evaluated. The experiments were conducted in three recirculation aquaculture systems, one for each concentration of NH 3 . Stocking densities were 33, 66, and 132 fish/m 3 . Fish were fed ad libitum three times per day. The only mortalities recorded were for treatments with the highest NH 3 concentration (1.58 mg/ L), which had a cumulative mortality of 89.5%. There were no significant differences in weight gain for the three stocking densities assessed at an NH 3 concentration of 0.50 mg/L. Results indicated that GIFT juveniles can be cultured with stocking densities of up to 132 fish/m 3 in environments with ammonia concentrations of up to 0.89 mg/L without compromising fish survival, although the daily weight gain was between 30% and 41% lower than the values reported for optimal culture conditions.

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“…Total amount of feed offered (TAFO; g) was recorded for each treatment, and the AFCR (dry g/wet weight g) was calculated based on the equation recommended by Oliveira et al. (2019):

AFCR = \frac{TAFO}{((), WG goodbreak\times n)},

where n is the number of individuals per tank.…”

Section: Methodsmentioning

confidence: 99%

Effects of Chronic Ammonia Exposure on Growth of Genetically Improved Farmed Tilapia (GIFT) Cultured Under Different Densities

2022

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“…Admar Gonzaga,1.346,Itacorubi,Florianópolis,SC,Brazil. rate, and the potential to gain high biomass in the nursery and in grow-out systems (Alvarez-Lajonchère and Tsuzuki, 2008). It has been studied for many years in the United States, Mexico, and Brazil (Tucker, 1987(Tucker, , 1998Taylor et al, 1998;Cerqueira et al, 2020;Gracia-López et al, 2003;Ibarra-Castro et al, 2011;Passini et al, 2018;Oliveira et al, 2019;Arenas et al, 2021), although it is not yet commercially reared.…”

Section: Introductionmentioning

confidence: 99%

Different Densities of Common Snook Reared in Marine Cages in Southern Brazil

Silva

Cerqueira

2021

Bol. Inst. Pesca

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Two growth stages of juvenile snook (Centropomus undecimalis) under three different densities were evaluated: 10, 20, and 40 fish m-3, in 2.5-m3 cages with 12-mm mesh. In phase I, snooks of 72.0 g and 21.2 cm were raised for 270 days. In phase II, snooks of 204.6 g and 29.2 cm were raised for 202 days. The average water temperature and salinity were 24.3°C and 34.5, respectively, at Santa Catarina Island, Brazil. The data were evaluated using regression models. Density increase did not influence survival rate, with 51.0% (phase I) and 88.7% (phase II). The density of 20 fish m-3 provided the best results, such as body weight, in the two phases, with 215.7 and 364.7 g, respectively. Water temperature was the main limiting factor for the growth of snook. Therefore, in a subtropical climate, it is recommended to start growing in the spring (> 24°C) and avoid handling fish when the temperature is below 20°C. Regression analysis on the final weight showed that densities of 24 fish m-3 could be indicated for common snook under the conditions of this study.

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“…Higher feeding rates and frequencies can result in higher performance of fish larvae although optimal feeding regimes may vary depending on fish species, life history stage, sizes, or rearing conditions. For example, growth performance of various fish larvae improved when administered live feed at higher frequencies or rates [11][12][13][14][15]. Administering live feed at the optimal time (i.e., switching on exogenous feeding) is critical, especially for fish species that exhibit cannibalism [16,17].…”

Section: Introductionmentioning

confidence: 99%

Optimized Live Feed Regime Significantly Improves Growth Performance and Survival Rate for Early Life History Stages of Pangasius Catfish (Pangasianodon hypophthalmus)

Huynh

2020

Fishes

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This study aimed to determine the optimal live feed regime (i.e., initial feeding moment, density, and frequency) for maximum growth and survival of pangasius catfish (Pangasianodon hypophthalmus) early life history stages. The first experiment assessed the optimal initial feeding moment (30, 36, 42, and 48 h post hatching, hph). The second experiment assessed feeding density (3, 5, 8 and 11 individuals per mL, ind/mL) at the optimal initial feeding moment (30 hph) which was the best result from the first experiment. The third experiment assessed optimal feeding frequency (1, 2, 4, and 6 times per day) at the optimal initial feeding moment (30 hph) and density (8 ind/mL) which was drawn upon from the second experiment. All experiments were conducted in 20 L containers containing 20 hph P. hypophthalmus larvae at a density of 10 ind/L and fed rotifers (Brachionus angularis) for 3 days and then water fleas (Moina macrocopa) for 7 days. The first experiment demonstrated that larvae initially fed at 30 hph exhibited a significantly higher survival rate (24%) than larvae initially fed at 36, 42, and 48 hph (19%, 16%, and 16%), respectively. The second experiment demonstrated that larvae fed at 8 and 11 ind/mL densities exhibited significantly higher survival rates (32% and 32%) than larvae fed at 3 and 5 ind/mL densities (13% and 23%), respectively. The third experiment demonstrated that the highest survival rate (66%) was obtained when larvae were fed 6 times per day. These results provide valuable insights regarding the optimal live feed regime for better growth and survival of P. hypophthalmus larvae, which are commercially important and numerously cultured throughout the Mekong Delta region.

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Feeding rate and feeding frequency affect growth performance of common snook (Centropomus undecimalis) juveniles reared in the laboratory

Cited by 4 publications

References 30 publications

Effects of Chronic Ammonia Exposure on Growth of Genetically Improved Farmed Tilapia (GIFT) Cultured Under Different Densities

Effects of Chronic Ammonia Exposure on Growth of Genetically Improved Farmed Tilapia (GIFT) Cultured Under Different Densities

Different Densities of Common Snook Reared in Marine Cages in Southern Brazil

Optimized Live Feed Regime Significantly Improves Growth Performance and Survival Rate for Early Life History Stages of Pangasius Catfish (Pangasianodon hypophthalmus)

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