Effect of stocking density on growth and survival of Nile tilapia (Oreochromis niloticus, Linnaeus 1758) under cage culture in Lake Albert, Uganda

Abaho, Ivan; Zaabwe, Thaddeus; Izaara, A. A.; Kasigwa, H.; Mushabe, Norman; Byenkya, S.; Nkambo, Mujibu; Baguma, Sylvester Dickson; Hafashimana, David; Efitre, Jackson

doi:10.5897/ijfa2018.0671

Cited by 12 publications

(4 citation statements)

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“…The food conversion ratio (FCR) expresses the ability of fish to efficiently convert feed into body flesh and thus the feed efficiency of the fish [20]. FCR increased significantly with increasing fish stocking density.…”

Section: Resultsmentioning

confidence: 99%

Determine the Optimal Density of Nile Tilapia (Oreochromis niloticus) Fingerlings Cultured in Floating Cages

Nouman¹,

Egbal²,

Sana³

et al. 2021

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The objective of the study was to determine the optimal density of fingerlings of the Nile tilapia (Oreochromis niloticus) culture in floating cages with respect to growth performance and to know the effect of temperature on growth during the winter period. Tilapia fingerlings (mean weight 8.5 ± 0.36 g) were stocked at densities of 120, 180 and 360 fish/m 3 for 10 weeks. During culture, fish were fed a diet contains 35% protein made of peanut seed, cottonseed, wheat bran, and Sorghum. The results showed that the increase in fish density reduced the final weight of the fish. The percentage of the fish weight increased and reached 111% ± 1.45% in the lowest fish density (120 fish/m 3 ), 79% ± 1.87% in the medium density (240 fish/m 3 ), and 63% ± 2.03% of high fish density (360 fish/m 3 ), therefore the daily growth rate was better in the lowest density. The rate of food conversion ratio was also better in the lowest density with 2.17 ± 0.33, followed by the medium density with 2.79 ± 0.28 and then the highest density with 3.09 ± 0.21. However, the total production in the cage increased with increasing fish density, and the return to the cost of food was better with higher fish density. According to various performance evaluation criteria, it can be concluded that the medium density 240 fish/m 3 is the best for growing Nile tilapia fingerlings in floating cages. It was observed that the growth rates of the three treatments were low due to the decrease in water temperature in most of the study period, which may indicate the useless of culture in cages in the winter season.

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Section: Resultsmentioning

confidence: 99%

Determine the Optimal Density of Nile Tilapia (Oreochromis niloticus) Fingerlings Cultured in Floating Cages

Nouman¹,

Egbal²,

Sana³

et al. 2021

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“…High stocking densities and social dominance in commercial aquaculture can cause chronic stress, which negatively affects productivity at harvest (Muñoz et al 2015). Therefore, to achieve higher growth and survival in the early stages of fish development, it is required to determine the appropriate stocking density, since the impact on these two parameters may be responsible for the economic benefits of the culture (Ferdous et al 2014;Abaho et al 2020). Determining optimum stocking density will allow to address other aspects, such as growth performance, survival, nutritional aspects, and genetic improvement (sex reversal).…”

Section: Discussionmentioning

confidence: 99%

EFFECT OF STOCKING DENSITY ON PRODUCTIVE PERFORMANCE OF JUVENILE OF THE BLACKSTRIPE CICHLID Vieja fenestrata (CICHLIFORMES: CICHLIDAE)

Sánchez Cruz,

Calzada Ruiz,

Peña Marín

et al. 2024

Trop Subtrop Agroecosyst

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Background: Native fish species are a developing alternative for sustainable aquaculture worldwide and in Mexico, the southern region is leading the efforts in freshwater species. Objective: To assess the effect of different stocking densities on the productive performance of native fish juveniles of blackstripe cichlid (Vieja fenestrata). Methodology: A one-factor randomized experimental design was used, evaluating in triplicate four stocking densities, 0.5 (L), 2 (M), 4 (H) and 6 (S) juvenile L-1. The experiment lasted 30 days. Wet weight and total length were registered every 15 days and growth performance indices were obtained. Results: Growth and survival were superior (P<0.05) for densities L and M. However, the M density showed a higher (P<0.05) growth rate, weight gain, and condition factor. Implications: The stocking density showed an apparent effect on the growth and survival of juveniles of the blackstripe cichlid, with the M density showing the best results; however, a cost-benefit assessment is required before starting production of this tropical native species. Conclusion: Our results suggest that a territorial and/or food competition was probably responsible for the survival and growth obtained. Although more studies are required, it appears that Vieja fenestrata showed the typical patrons of behaviour of another most famous cichlids, as Nile tilapia, with high levels of aggression that depend on stoking density.

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“…With this study, it can be suggested that fish weight decreased inversely proportional to the increase in tilapia planting density in the different treatments, which agrees with the results of Ferdous et al, [10] and Rayhan et al, [22] . However, recent studies have revealed that seeding at high densities could negatively affect the growth performance of fish due to competition for food and may even affect the reproductive development of fish as discussed in the works of Abaho et al, [11] ; Mengsitu et al, [12] ; Makori et al, [13] ; Gindaba et al, [14] ; Mapenzi & Mmochi [15] . In this experiment, it is observed that survival decreased with increasing population density.…”

Section: Discussionmentioning

confidence: 99%

Comparison of length and weight gain, AGR, IGR, KM, and feeding efficiencies in Oreochromis niloticus grown at different densities in a Biofloc system in the laboratory

Mejía,

Jorge,

Martínez

et al. 2023

J. Entomol. Zool. Stud.

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This study evaluated the effect obtained on feed efficiency in five treatments with Nile tilapia (Oreochromis niloticus) using a Biofloc system at different densities. The specimens were placed in five containers with 250 L of water each (50, 75, 100, 125, and 150 respectively), and every 15 days 30 organisms were taken, weighed, and measured. At the end of the experiment, the length and weight gain of the fish were evaluated, and the AGR, IGR, KM, FCR, and FCE were obtained. A one-factor analysis of variance was applied to the data obtained to find significant differences (p<0.05) between treatments, and the Tukey technique was applied. The organisms that obtained the highest weight were those grown in the 50 org 250 L -1 treatment, reaching 677.43±0.33 g in only 98 days of experimentation. The highest TCA of weight and length were presented in the 50 org 250 L -1 treatment (4.70 g day -1 and 0.43 cm day -1 respectively). In general, we can conclude that fish grew better and length at lower rather than higher stocking densities. However, this does not exclude the possibility of higher stocking densities, especially if good water quality is maintained to obtain a better final production.

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Effect of stocking density on growth and survival of Nile tilapia (Oreochromis niloticus, Linnaeus 1758) under cage culture in Lake Albert, Uganda

Cited by 12 publications

References 1 publication

Determine the Optimal Density of Nile Tilapia (<i>Oreochromis niloticus</i>) Fingerlings Cultured in Floating Cages

Determine the Optimal Density of Nile Tilapia (<i>Oreochromis niloticus</i>) Fingerlings Cultured in Floating Cages

EFFECT OF STOCKING DENSITY ON PRODUCTIVE PERFORMANCE OF JUVENILE OF THE BLACKSTRIPE CICHLID Vieja fenestrata (CICHLIFORMES: CICHLIDAE)

Comparison of length and weight gain, AGR, IGR, KM, and feeding efficiencies in Oreochromis niloticus grown at different densities in a Biofloc system in the laboratory

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Effect of stocking density on growth and survival of Nile tilapia (Oreochromis niloticus, Linnaeus 1758) under cage culture in Lake Albert, Uganda

Cited by 12 publications

References 1 publication

Determine the Optimal Density of Nile Tilapia (&lt;i&gt;Oreochromis niloticus&lt;/i&gt;) Fingerlings Cultured in Floating Cages

Determine the Optimal Density of Nile Tilapia (&lt;i&gt;Oreochromis niloticus&lt;/i&gt;) Fingerlings Cultured in Floating Cages

EFFECT OF STOCKING DENSITY ON PRODUCTIVE PERFORMANCE OF JUVENILE OF THE BLACKSTRIPE CICHLID Vieja fenestrata (CICHLIFORMES: CICHLIDAE)

Comparison of length and weight gain, AGR, IGR, KM, and feeding efficiencies in Oreochromis niloticus grown at different densities in a Biofloc system in the laboratory

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Determine the Optimal Density of Nile Tilapia (<i>Oreochromis niloticus</i>) Fingerlings Cultured in Floating Cages

Determine the Optimal Density of Nile Tilapia (<i>Oreochromis niloticus</i>) Fingerlings Cultured in Floating Cages