The effect of stocking density on profitability of African catfish (Clarias gariepinus) culture in extensive pond systems

Oké, Vincent; Goosen, Neill J.

doi:10.1016/j.aquaculture.2019.04.043

Cited by 26 publications

(17 citation statements)

References 33 publications

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“…This condition indicates that the culture of gurami sago in floating net cages gives fish a chance to consume more feed. However, this AFCR was lower than that of Nile tilapia 42,43 , and giant gourami 8 , and higher than the African catfish AFCR value 44 .…”

Section: Discussioncontrasting

confidence: 55%

Growth, production and feed conversion performance of the gurami sago (Osphronemus goramy Lacepède, 1801) strain in different aquaculture systems

et al. 2020

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Background: Giant gourami (Osphronemus goramy, Osphronemidae), belonging to the gurami sago strain, is an important economic fish species that was newly released for domestication in 2018 in Indonesia. The present study aimed to determine the growth, production and feed conversion efficiency of gurami sago strain in different aquaculture systems. Methods: A mean of 240 juveniles were stocked (mean, 54.53 g and 13.88 cm) into concrete ponds, ﬂoating net cages and earthen freshwater ponds (12 m3) with three replicates of each. The juveniles were fed a floating commercial pellet diet containing 30% crude protein and 5% crude lipids. Feed was supplied at 3% of fish biomass per day throughout the 90 days of the experiment. The research was conducted in the area surrounding Lake Maninjau of West Sumatera Province, Indonesia. Results: After 90 days, the mean weight of ﬁsh reared in concrete ponds was 166.86 g, floating net cages was 179.51 g and earthen freshwater ponds was 149.89 g. The mean final biomass was 37.64 kg for concrete ponds, 41.27 kg for floating net cages, and 33.72 kg for earthen freshwater ponds. The specific growth rates (%/day) for concrete ponds, floating net cages and earthen freshwater ponds were 0.67, 0.75 and 0.62, respectively. The feed conversion rates were 1.45 for concrete ponds, 1.30 for floating net cages and 1.87 for earthen freshwater ponds. The net yields (kg mˉ3) were 2.05 for concrete ponds, 2.27 for floating net cages, and 1.73 for earthen freshwater ponds. The exponents (b) of the length–weight relationship were calculated for concrete ponds (1.0146), floating net cages (1.2641), and earthen freshwater ponds (1.0056). Conclusion: The study showed that the growth performance, production and feed conversion efficiency of the gurami sago strain could be considered a new candidate strain for floating net cage aquaculture in the future.

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Section: Discussioncontrasting

confidence: 55%

Growth, production and feed conversion performance of the gurami sago (Osphronemus goramy Lacepède, 1801) strain in different aquaculture systems

et al. 2020

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show abstract

“…This condition indicates that the culture of gurami sago in floating net cages gives fish a chance to consume more feed. However, this AFCR was lower than that of Nile tilapia 42 , 43 , and giant gourami 8 , and higher than the African catfish AFCR value 44 .…”

Section: Discussioncontrasting

confidence: 53%

Growth, production and feed conversion performance of the gurami sago (Osphronemus goramy Lacepède, 1801) strain in different aquaculture systems

Azrita

Aryani²,

Mardiah³

et al. 2020

F1000Res

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Giant gourami ( ), Background:Osphronemus goramy, Osphronemidae belonging to the gurami sago strain, is an important economic fish species that was newly released for domestication in 2018 in Indonesia. The present study aimed to determine the growth, production and feed conversion efficiency of gurami sago strain in different aquaculture systems.A mean of 240 juveniles were stocked (mean, 54.53 g and 13.88 Methods: cm) into concrete ponds, floating net cages and earthen freshwater ponds (12 m ) with three replicates of each. The juveniles were fed a floating commercial pellet diet containing 30% crude protein and 5% crude lipids. Feed was supplied at 3% of fish biomass per day throughout the 90 days of the experiment. The research was conducted in the area surrounding Lake Maninjau of West Sumatera Province, Indonesia.After 90 days, the mean weight of fish reared in concrete ponds Results: was 166.86 g, floating net cages was 179.51 g and earthen freshwater ponds was 149.89 g. The mean final biomass was 37.64 kg for concrete ponds, 41.27 kg for floating net cages, and 33.72 kg for earthen freshwater ponds. The specific growth rates (%/day) for concrete ponds, floating net cages and earthen freshwater ponds were 0.67, 0.75 and 0.62, respectively. The feed conversion rates were 1.45 for concrete ponds, 1.30 for floating net cages and 1.87 for earthen freshwater ponds. The net yields (kg m ) were 2.05 for concrete ponds, 2.27 for floating net cages, and 1.73 for earthen freshwater ponds. The exponents (b) of the length-weight relationship were calculated for concrete ponds (1.0146), floating net cages (1.2641), and earthen freshwater ponds (1.0056).The study showed that the growth performance, production Conclusion: and feed conversion efficiency of the gurami sago strain could be considered a new candidate strain for floating net cage aquaculture in the future. , Technical University

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“…Існують різні рішення кінцевої конструкції систем біофільтрації, залежно від розміру господарства, об'єктів рибництва, розміру риб і т. д. (Oké & Goosen, 2019).…”

Section: рис 1 схема узв для вирощування кларієвого сомаunclassified

“…Важливо розуміти, що бактерії так швидко ростуть на органічній речовині, що контроль їх чисельності в традиційних рибних господарствах має обмежені ефекти. Найкращий контроль досягається, коли ефективна механічна фільтрація комбінується з ретельною біологічною фільтрацією, що дозволяє ефективно видаляти органіку з відпрацьованої води і УФ-випромінювання працює ефективніше (Oké & Goosen, 2019).…”

Section: рис 1 схема узв для вирощування кларієвого сомаunclassified

Fish-water substantiation of the recirculation aqua system for the African clary catfish Clarias gariepinus (Burchell, 1822)

Trofymchuk

Grynevych

Romanchuk³

et al. 2021

SMLNUVMBA

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The advantages of Clarias gariepinus over other valuable species of fish raised in closed water supply systems are rapid growth, the ability to obtain marketable products in 6 months, unpretentiousness to the conditions of detention, valuable taste: clary catfish meat contains polyunsaturated fatty acids ( omega-3) and meets the requirements of a balanced healthy diet. The study was conducted on one of the farms for growing clary catfish, which is part of the Union of Aqua Farmers of Ukraine LLC “Aquapromgroup” in the Odesa region. To optimize the work of the farm for growing commercial Claria catfish in ultrasound, the use of polycyclic (8-cyclic) method instead of 2-cyclic, which currently operates, will allow more efficient use of production capacity, technological equipment and sell 127,784 tons of fish, which is 2.4 times more. To implement the technology it is necessary to grow the following number of fish: at the 1st stage – 24000 specimens, at the 2nd stage – 20400 specimens, at the 3rd stage – 17748 specimens, at the 4th stage – 15973 of each of 8 cycles. During the year the farm sells 127.784 copies. clary catfish with an average weight of 1 kg. Farm costs for compound feed: for feed for fry (“Biomar”) – 234432 UAH, for feed for other age groups of clary catfish – 2879860 UAH. The total cost of feed – 3114292 UAH. If all the requirements of the 8-cycle technological process of growing catfish in closed water supply installations (total volume of pools – 131 m3) the cost of 1 kg of fish will be 39 hryvnias, the farm will receive 3960300 hryvnias of gross profit from sales of marketable products, the profitability of production will be 79.5 %. Therefore, during the performance of this work, we proved the advantage of using the polycyclic method of growing clary catfish in closed water supply installations.

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The effect of stocking density on profitability of African catfish (Clarias gariepinus) culture in extensive pond systems

Cited by 26 publications

References 33 publications

Growth, production and feed conversion performance of the gurami sago (Osphronemus goramy Lacepède, 1801) strain in different aquaculture systems

Growth, production and feed conversion performance of the gurami sago (Osphronemus goramy Lacepède, 1801) strain in different aquaculture systems

Growth, production and feed conversion performance of the gurami sago (Osphronemus goramy Lacepède, 1801) strain in different aquaculture systems

Fish-water substantiation of the recirculation aqua system for the African clary catfish Clarias gariepinus (Burchell, 1822)

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