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

Effect of High and Low Cost Brood Feeds on Gonado-somatic Index and Fecundity of Freshwater Prawn Macrobrachium Rogenbergii

M. Lokman Ali
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh 2202

M. Mamnur Rashid
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh 2202

S.U. Ahmed
Bangladesh Fisheries Research Institute, Riverine Station, Chandpur

K.R. Hasan
Bangladesh Fisheries Research Institute, Riverine Station, Chandpur

M. M. Alam
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh 2202

Abstract/ Executive Summary:

Studies were conducted to observe the effects of different types of feeds on the gonado-somatic index (GSI) and fecundity of freshwater prawn Macrobrachium rogenbergii Three different treatments (T₁ T₂ and T₃) were designed with three types of feed as follows: (i) Saudi-Bangla Prawn feed 100% - T₁ (ii) Saudi Bangla prawn feed 50%+ local feed 50%- T₂ and (iii) local feed 100%- T₃. The results showed that the average value of gonado-somatic index (GSI) was 14.39, 14.35 and 14.36 and the average fecundity of M. rogenbergii was 99,741, 98,125 and 97,911 in T₁, T₂ and T₃ respectively. No significant difference (p>00.5) was between gonado-somatic indices (GSI) and fecundities of M. rogenbergii among different feeding trails. The price of Saudi-Bangla prawn feed was very high (Tk. 23/kg) than the local feed (Tk. 14/kg). So, use of local feed was recommended for M. rogenbergii brood rearing.

Keywords: Prawn feed, Gonado-somatic index, Fecundity

Location: Bangladesh Fisheries Research Institute, Riverine Station, Chandpur

Start Date: 00-00-2002

End Date: 00-00-2002

Program Area: Animal Health and Management

Commodity: Prawn

Objectives:

To determine the effect of high cost and low cost feed on the gonado-somatic index and fecundity of M. rogenbergii.

Methodology:

Observation of the effects of high and low cost feeds of Macrobrachium rogenbergii broods on their gonado-somatic index and fecundity was carried out in the backyard hatchery of Bangladesh Fisheries Research Institute, Riverine Station, Chandpur. Three Treatments were designed for feeding with three replications as follows: T₁ =Saudi-Bangla prawn feed 100%, T₂=Saudi-Bangla prawn feed 50% and Local feed 50% and T₃=Local feed 100%. Local feed was prepared by using local ingredients such as fish meal, mustard oil cake, rice-bran, wheat flower and vitamin-mineral premix by maintaining the protein level 30% which was equal to that of the Saudi-Bangla prawn feed. An earthen pond of 135 m² area was chosen for the experiment. The water of the pond was completely drained out and remained exposed to the sun for 15 days until the bottom cracked. After complete drying, the pond was tilled to improve the soil quality by exposing sub-soil to the atmosphere there by speeding up the oxidation process and the released of nutrients that were locked in the soil Lime was applied to the soil at the rate of 1 kg/dm. After liming the pond was divided into nine plots of 15 m² size each. These plots were divided by using nylon nets. They were of 4 feet height from ground level so that the prawns, stocked in one plot cannot move towards the other plot. Bamboo poles were used to fix the net vertically. After complete netting the pond was filled with water. The nets were cleaned periodically during the experiment to maintain the water quality of each plot equal Organic and inorganic fertilizers were applied in the pond. Organic fertilizer of cowdung was broadcasted over the pond at a ratio of 10 kg/dm. After 6-7 days of organic fertilization, the chemical fertilizers were applied at the rate of urea 100g/dm and TSP 75g/dm. The juveniles were stocked at a density of 2/m²• The average length and weight of the juveniles were 10.3 em and 20.5 g respectively. Feeds were supplied to the prawns at 5-3% of their body weight. Three types of feeds were supplied to each three replicates of the nine experimental ponds. The physico-chemical parameters of the plots were recorded fortnightly. Temperature was recorded by a Celsius thermometer. The pH, DO and ammonia were measured by a portable water test kit (HACH Company, love land, Colorado). Determination of Gonado-Somatic Index was determined. Determination of fecundity: Fecundity was determined using gravimetric method. Mother prawns were collected from different experimental plots. The prawns were transported to the backyard hatchery with plastic drum. The total weight of individual prawn was taken by an electronic balance. A portion of ovary was sampled from the mother prawn in a clean petri dish with the help of forceps. The mother prawns were then released in the aquarium with 6 ppt saline water for hatching of the eggs. The water from sampled eggs was blotted by a blot paper and then dried at room temperature. Number of eggs in the sampled portion was counted. After hatching, the weight of each mother prawn was taken. The weight of total eggs i.e. the weight of the gonad was calculated. Statistical analysis: One way analysis of variance (ANOVA) was performed on the yield data to determine treatment effects. Significant differences between treatments were isolated using Duncan's multiple range test (DMRT) at 5% level of significance.

Source of Information: Bangladesh J Fish. Res.,8(l), 2004: ll-17

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The local feed was recommended for the brood :rearing of M. rogenbergii in ponds. Use of local feed was recommended for M. rogenbergii brood rearing.

Knowledge Management: Journal