An Experiment on Growth Performance, Specific Growth Rate (SGR) and Feed Conversion Ratio (FCR) of Rohu (Labeo rohita) and Tilapia (Oreochromis niloticus) in Tank Based Intensive Aquaculture System

Abstract

The growth and survival are considered as the crucial factors that should be taken into consideration in any aquaculture system. The experiment was aimed to evaluate the growth performance and subsequent survival rate of the rohu (Labeo rohita) and tilapia (Oreochromis niloticus). It is important to evaluate the growth responses in relation to Feed Conversion Ratio (FCR) and assessment of the total production of the culture unit. As per the recommended stocking density of 320 fishes/decimal in intensive aquaculture system 8 fry per tank was released to assess the growth performance, survival and production of both rohu (T1) and tilapia (T2). During experimental period, there were three replications for each treatment and feed was supplied at the rate of 12%, 8%, and 4% of the body weight of rohu and 20%, 15%, and 10% of the body weight of tilapia in 1st, 2nd and 3rd month for T1 and T2, respectively. The initial weight of individual tilapia was 7.52±1.81 gm and 14.75±0.19 gm for T1 and T2, respectively. The mean final weight was 44.01±4.03 g for T1 and 139.94±1.29 for T2. The weight gains of fish were 36.49±4.09 gm and 125.19±1.29 gm for T1 and T2, respectively. The mean percent weight gain of tilapia was higher in T2 (1715.05±0.00) than T1 (485.23±0.00). The Specific Growth Rates (SGR) of T1 and T2 were found 4.98±2.28 and 6.26 ±3.83, respectively. There was significant difference (p>0.05) in term of SGR between the treatments. Feed Conversion Ratio (FCR) in T1 and T2 were 2.86±0.14 and 2.23±0.18, respectively. Higher total production was obtained in T2 (1119.52 gm) than T1 (278.19 gm) with 100% survival in both the treatments. The water quality parameters for both of the species were within the suitable range. This study reveals a promising arena for fish culture in tank-based intensive aquaculture system as an efficient way of overcoming the scarcity of water and land. This culture system may be an excellent way of producing fish in a small parcel of land with securing the propitious production and expected outcomes within a limited period of time.

Studies on the Influence of Artificial Fish Feed on the Growth of the Fingerlings of the Spotted Tilapia, Pelmatolapia mariae

“…In the current investigation, the growth of tilapia was monitored using artificial feed containing the necessary ingredients. Previous research on Labeo rohita has shown that fish growth is correlated with both overall length and weight gain when artificial feed is utilized 30 . When tilapia fry was continuously fed with artificial feed, there was an increase in the length of the fry during the final stages, but no significant growth was observed during the initial stage 31 .…”

Investigation on parasitic infestation of Labeo rohita (Hamilton, 1822) in the south‐western region of Bangladesh

“…L. rohita is frequently cultivated in ponds, often in polyculture with other species such as catfish and carp, as part of integrated farming systems aimed at maximizing resource efficiency. In aquaculture, the fish is provided with a well‐balanced diet comprising both plant and animal proteins to promote optimal growth (Rahman & Arifuzzaman, 2021 ). The flesh of L. rohita holds great esteem in South Asian culinary traditions, greatly enhancing its market desirability.…”

Specific Growth Rate (SGR) in Different Stages of Tilapia (Oreochromis niloticus) Production Cycle in Cemented Tank Based Semi-Intensive Aquaculture System

“…Nowadays, fish production is shifting to aquaculture from capture fisheries in terms of producing more fish by means of taking improved measures such as regular stocking, feeding, maintaining healthy conditions and implying the other modern aquaculture technologies. Among different categories of aquaculture technologies, semi-intensive system merely is the intermediate method of extensive and intensive system to produce fish (Rahman and Arifuzzaman, 2021a). The use of tank in semi-intensive system as a unit of fish farming is a modern method of aquaculture having several advantages.…”