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

Abstract

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

Length-weight relationship and condition factor of Nile tilapia (Oreochromis niloticus) fed diets supplemented with guava and star gooseberry leaf extract

“…Similarly, silver barb (B. gonionotus) and zebrafish (Danio rerio) fed with dietary blanched moringa leaf meal 43 and plant-protein based diets 47 found positive allometric growth. On the contrary, gold fish (Carassius auratus) fed with different concentrations of carrot 48 and gurami sago (Osphronemus goramy) stocked in concrete ponds, floating net cages, and earthen freshwater ponds, 49 found negative allometric growth.…”

Effect of feed enriched with fermented coconut water products on growth and carcass composition of gurami sago (Osphronemus goramy Lacepède, 1801) juvenile.

“…FCR at diet P2 was 1.36, while a value of 1.55 was observed in P4. The commercial fish feed caused a higher FCR when the samples were cultured in earthen freshwater ponds (FCR = 1.87) compared to concrete freshwater ponds (FCR = 1.45) 4,8 . The weight gain and growth of the animal decreased with increasing fiber content in the diet 43 .…”

“…However, its contribution to the total production of freshwater aquaculture is lower compared to tilapia, African catfish, and Pangasius catfish 5 . This has led to the active engagement of the Ministry of Maritime Affairs and Fisheries of the Republic of Indonesia in encouraging fish farmers to increase the annual production of giant gurami from various local strains, including Tambago, Palapa, Bastar, Galunggung, Blusafir, and Sago 4,[6][7][8] .…”

“…Several global initiatives have been implemented to enhance production of giant gurami using aquaculture activities, such as adjusting feeding rates in floating cages 9 , changing stocking density in concrete freshwater ponds 4 , and diversifying aquaculture systems, including earthen freshwater ponds, concrete freshwater ponds, and floating cages 7,8,10 . Although these aquaculture operations use commercial pellet fish food, feed conversion ratio (FCR) remains elevated, ranging between 1.43 and 1.65.…”

“…Although these aquaculture operations use commercial pellet fish food, feed conversion ratio (FCR) remains elevated, ranging between 1.43 and 1.65. This condition often leads to a low feed efficiency ratio, where 30 to 40% of the meal consumed is released as a waste load to water bodies 4,8,11 , thereby causing significant concerns due to the high cost of fish feed [12][13][14][15][16][17][18] .…”