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A Comparative Study on the Effect of Commercial Fish Feeds on the Growth of Thai Pangas, Pangasius Hypophthalmus

M.A. Kader
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

M.A. Hossain
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

M.D. Hossain
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

Abstract/ Executive Summary:

A 70 day long experiment was carried out to evaluate three commercial pangas feeds available in Bangladesh viz. Quality Feeds Ltd. (QF), Aftab Bohumukhi Farm Ltd. (ABF) and Saudi-Bangla Fish Feed Ltd. (SBFF) (designated as treatment T1, T2 and T3) on the growth of Pangas, Pangasius hypophthalmus. Each treatment had two replicates using six experimental ponds of each 80m² size. The stocking density was 250 fish/80m². At the beginning, the fish were fed twice daily at 15% of their body weight which was gradually reduced to 10 and 6%, respectively for the rest of the period. The ranges of water quality parameters observed were: temperature 29.0°C- 5.1 °C, pH 6.85 - 8.52, DO 1.71 - 7.65 mg/l and transparency or Secchi depth 14.5 - 30.0 cm. The mean weight gain of fish was significantly (P<0.05) higher in T 3 followed by T2 and T1 The specific growth rate (SGR) ranged. between 4.09 and 5.06, feed conversion ratio (FCR) values between 1.54 and 1.61 with treatment T1 showing the lowest FCR. Protein efficiency ratio (PER) values ranged between 2.03 and 2.11. The survival of fish varied between 90.4 and 91.6%. The significantly (P<0.05) highest production of fish (kg/ha/70 days) and profit (Tk/ha/70 days) was observe in T3 (SBFF) followed by T2 (ABF) and T1 (QF), respectively. The result of the study showed that on the basis of nutritive value and growth performance of pangas, feed from Saudi-Bangla Fish Feed Ltd. is the best. At the beginning of the experiment ten fish from the stock and at the end of the experiment four fish from each treatment were collected randomly for carcass analysis. The proximate composition of fish carcass and feed were determined in triplicates according to AOAC. Growth performances and feed efficiency were calculated. One way analysis of variance (ANOVA) followed by Duncan's multiple range test (DMRT) was done to determine the significance of variation among the treatment means.

Keywords: Pangas, Commercial fish feed, growth

Location: Bangladesh Agricultural University (BAU), Mymensingh.

Start Date: 00-00-2000

End Date: 00-00-2000

Program Area: Animal Health and Management

Commodity: Feed

Objectives:

To observe the growth and feed utilization of P. hypophthalmus using three different commercial fish feeds available in the market

Methodology:

Three most commonly used Pangas feeds from Quality Feeds Ltd. (QF), Aftab Bohumukhi Farm Ltd. (ABF) and Saudi-Bangla Fish Feed Ltd. (SBFF) were collected·from local Mymensingh market. Three categories of feeds e.g. nursery, starter and grower/finisher for QF and ABF Feed and starter-l, starter-II, starter-III and grower-l were used for SBFF. The experiment was carried out over a period of 70 days in six experimental ponds located in the Hatchery and Field Laboratory Complex of the Faculty of Fisheries, Bangladesh Agricultural University (BAU), Mymensingh. The. size of each pond was 80 m² and average depth was about 1.5 m. There were three treatments viz T1, T2 and T3 assigned to QF, ABF and SBFF feed respectively each having two replicates. The proximate composition of the commercial feeds were analyzed. The fingerlings of Thai pangas, P. hypophthalmus were collected from a local fish vendor. All the fish were of same age group having mean length and weight of 8.44±0.04 em and 6.60±0.04 g respectively. Each pond was stocked with 250 fingerlings. Nursery feeds were applied at the beginning of the trial followed by starter and grower/finisher feeds. The feeds were supplied twice daily morning (9.00 hr) and afternoon (16:00 hr). At the beginning, fish were fed at a rate of 15% of the body weight which was reduced to 10 and 6% for the rest of the period. The feeds were dispersed by hand broadcasting over the ponds. Fortnightly sampling was done to adjust the feeding rate and to observe the health condition of fish. Water quality parameters such as temperature, pH, dissolved oxygen and transparency were measured and recorded weekly throughout the experimental period.

Source of Information: Bangladesh J. Fish. Res., 7(1), 2003: 53-58

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Saudi-Bangla Fish Feed is the best commercial fish feed for mono culture of P. hypophthalmus in ponds at a higher stocking density as used in the present study.

Knowledge Management: Journal