Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Comparative Study on Growth and Survival Rate of Oreochromis Niloticus(linnaeus 1758) Treating with Supplementary Feed at Different Feeding Regime

Shyamal Kumar Paul
Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali, Bangladesh. Research Cell, Noakhali Science and Technology University, Noakhali, Bangladesh.

Md. Borhan Uddin Ahmed
Department of Fisheries Biology and Genetics, Bangladesh Agricultural University, Mymensingh, Bangladesh.

Mehedi Mahmudul Hasan
Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali, Bangladesh.

Dhirendra Nath Barman
Department of Biotechnology and Genetic Engineering, Noakhali Science and Technology University, Noakhali, Bangladesh.

Mazharul Islam
Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali, Bangladesh.

Abstract/ Executive Summary:

This experiment was designed with three experimental treatments namely T₁ (natural feed), T₂ (feeding with 10% body weight), and T₃ (feeding with 5% body weight) for ten weeks. In the content of 33.8% of crude protein (CP), 11.2% of crude fiber (CF), 6% of fat and 10.2% of ash content feed were used as an experimental diet in this experiment. The stocking densities were 280 fish decimal^-1 in three treatments where the mean initial weight of fry was 20 ± 0.2 g in all treatments combined and at the end of the experiment the mean final weight was found as 58.9 ± 2.86 g, 134.4 ± 3.62 g and 142.5 ± 4.23 g for T₁, T₂, and T₃ respectively. The mean initial length was 10.2 ± 0.01 cm in three treatments and the final length was found as 14.58 ± 1.60 cm, 18.74 ± 1.23 cm, and 20.16 ± 2.08 cm in T₁, T_2, and T₃ respectively. The mean weight gains 38.9 ± 1.53 g, 114.4 ± 3.05 g and 122.5 ± 1.5 g, mean length gain 4.38 ± 0.24 cm, 8.54 ± 0.65 cm and 9.96 ± 0.59 cm, mean SGR 1.76%, 3.5%, and 3.82% were recorded in T₁, T_2, and T₃, respectively. The highest weight gain, length gain, and SGR were found in T₃ and the lowest was found in T₁. The survival rate was 82%, 88%, and 94% in T₁, T_2, and T₃, respectively. FCR values were found as 3.49 ± 0.5 and 2.51 ± 0.4 in T₂ and T₃. The result demonstrated that feeding with 5% body weight had a better effect on the growth and survival rate of monosex (male) O. niloticus.

Keywords: Oreochromis niloticus; Growth; Feed; Survival rate, Tilapia

Location: Bangladesh located in the district of Noakhali

Start Date:

End Date:

Program Area: Animal Health and Management

Commodity: Tilapia

Objectives:

To investigate the effect of feeding on growth and survival rates of O. niloticus.

Methodology:

The experiment was carried out in three experimental cages (dimension 8_L×4_W×4_H feet³ each) in a seasonal wetland (southeastern part of Bangladesh located in the district of Noakhali) for a period of ten weeks. The average depth of the waterbody was six feet while the water depth inside the cage was higher than three feet. The cages were made of locally available bamboo and nylon net. The distance of each cage from its neighbouring one was 100 cm and the same distance was maintained between the embankment and a cage. All experimental cages were cleared off all vegetation prior to the commencement of the experiment. The dead fishes and other aquatic organisms were removed by repeated netting. The experiment was designed with three treatments namely T₁, T_2, and T_3, where T₁ control depended on natural food, and T₂ and T₃ got treated with supplementary feed 10% and 5% of the body weight. After the preparation of the experimental site, hormone (17α methyltestosterone) treated mono-sex males were stocked into the cages. 30-day old fries were used where the initial average body weight was 20 ± 0.2 g and the length was 10.2 ± 0.1 cm. with 280 fish decimal^-1. Fishes were healthy and disease-free and transported from the nearest hatchery by oxygenated polybag. The fishes were kept without feeding for 6 hours for conditioning. No fish was marked as deformed or weak after conditioning. Fin, eye, and scales were good in condition. Before stocking, fishes were treated with Epsom Salt Soaking Solution 5 mg L^-1 (magnesium sulfate) for 3 minutes. The physicochemical parameters of water were measured at 10 a.m. twice a week regularly. The temperature was measured using a mercury thermometer, Celsius, p^H was measured by a digital portable p^H meter (Model: HANNA-HI 96107) and dissolved oxygen was measured by a portable DO meter (Model: Lutron-DO-5509). The experimental floating diet was formulated with local ingredients based on fish meal, mustard oil cake, wheat flour, cornflour, rice bran, bone meal and starch. The formulated feed was made maintaining 2.0 ± 0.3 mm in diameter. The amount of the feed was adjusted once in seven days’ intervals based on the bodyweight of the fish. Thus the amount of daily supplementary feed was calculated using the average body weight and the total number of the fish. Half of the ration feed was supplied at 9:00 a.m. and the remaining half were supplied at 4:00 p.m. daily. The nutritional composition of the diet used for the experiment was 91% of dry matter (DM) which contains 33.8% of crude protein (CP), 11.2% of crude fiber (CF), 6% of fat and 10.2% of ash. In this experiment, the protein was determined by the Kjeldahl method, fat by the Soxhlet method, moisture by oven drying method, fiber by the acid detergent method, and ash by using muffle furnace [16]. Sampling was done in every 7 days interval. A scoop net was used to catch about 30 percent of fish from the cage, and the length and weight of each species were measured using a scale and digital balance (Lutron GM-600.0 g×0.1 g) respectively. Mortality of the fish was also recorded throughout the experiment. The data obtained were subjected to a one-way analysis of variance (ANOVA) to test the effect of feeding rate as Factorial in Complete Randomized Design. Duncan's multiple range tests were used to compare between means at P ≤0.05 using Sigma Stat Program version 3.5.

Source of Information: Asian Journal of Fisheries and Aquatic Research- 1(2): 1-8, 2018

Article Link (Online Journal): DOI: 10.9734/AJFAR/2018/v1i2266

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The length, growth performance and survivability were pretentious by 5% & 10% body weight supplementary and natural feed and were significantly different under different feeding rates. Based on the present experimental condition, it can be recommended that the optimum feeding rate for tilapia in cage condition is 5% of their body weight compared to 10% and natural food is not sufficient for the notable growth. Therefore, culturing of mono-sex O. niloticus will enable fish farmers to reach the goal of 5% body weight of fish supplementary feed within a relatively shorter period of time.

Knowledge Management: Journal