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Optimization of Feeding Frequency on the Growth Performance of Thai Pangas,pangasius Hypophthalmus (sauvag E,1878)

MD. ALI HUSAIN
Department of Fisheries, Faculty of Biological Sciences, University of Dhaka, Dhaka

ANWAR HOSSAIN
Department of Fisheries, Faculty of Biological Sciences, University of Dhaka, Dhaka

SHANKAR CHANDRA MANDAL,
Department of Fisheries, Faculty of Biological Sciences, University of Dhaka, Dhaka

MD. ALAMGIR KABIR
Department of Fisheries, Faculty of Biological Sciences, University of Dhaka, Dhaka

MOHAMMAD SHAMSUR RAHMAN
Department of Fisheries, Faculty of Biological Sciences, University of Dhaka, Dhaka

Abstract/ Executive Summary:

Thai pangas, Pangasius hypophthalmus fingerlings were reared for 60 days in laboratory condition to investigate the effects of feeding frequency on the growth performance. The fish fingerlings in three treatments were fed with two, three and four times a day, respectively . During the feeding trial, growth and feed utilization were assessed by condition factor (K), average daily gain (ADG), specific growth rate (SGR) and feed conversion ratio (FCR). Significantly lower FCR 1.81 ± 0.02 and higher ADG 0.38 ± 0.02 and SGR 2.20 ± 0.02% were found in fish fed thrice a day than that of other treatments (p < 0.05). Highest condition factor 1.69 ± 0.13 was found in fish fed four times a day while the lowest condition factor 0.77 ± 0.03 was detected in fish fed twice a day. Moisture content of Thai pangas in treatment T₁, T₂ and T3 were 79.23 ± 0.77, 78.08 ± 0.85 and 77.84 ± 0.17%, respectively. The crude protein, crude lipid and ash contents were 16.11 ± 0.00 to 16.38 ± 0.08%, 3.22 ± 0.27 to 3.41 ± 0.06% and 1.47 ± 0.02 to 1.82 ± 0.04%, respectively. The findings of the present study demonstrated that three times feeding frequency showed better growth performance and nutritional composition of Thai pangas fingerlings .

Keywords: Pangas, Feeding frequency, Growth performance, Fingerlings

Location: Mymensingh, Dhaka

Start Date:

End Date:

Program Area: Resource Development and Management

Commodity: Pangus

Objectives:

The present study was designed to investigate the feeding frequency by determining the growth performances for optimum aquaculture production of Pangasius hypophthalmus

Methodology:

Thai pangas ( Pangasius hypophthalmus) (7.0 ± 0.15 cm and 3.1 ± 0.25 g) fingerlings were obtained from the Brahmaputra fish hatchery at Mymensingh and transported to the rearing laboratory of the Department of Fisheries, University of Dhaka . The fingerlings were acclimated for two weeks prior to experiment. Nine circular tanks (each with 500 1 pond water) were used in the present study in three treatments with three replicates each with ten fingerlings with continuous aeration. Fifty per cent water was exchanged every week with pond water. The fish fingerlings in three treatments were fed with 2, 3 anq 4 times a day, respectively. The fingerlings were fed at the rate of 5% of their body weight. The sampling was done all the fishes in each tank at every 20 days interval and water quality parameters were observed weekly. During the feeding trial, the change in growth and feed utilization have been assessed by determining the condition factor (K), average daily gain (ADC), specific growth rate (SGR) and feed conversion ratio (FCR). MEGA feed, Bangladesh, was used as experimental feed with 12% (maxi.) moisture, 32% (mini.) protein, 7% (mini.) lipid, 17% (maxi.) ash, 6% (maxi .) crude fiber, 2.1% (maxi.) calcium and 0.8% (mini.) phosphorus on the basis of per cent dry matter. Sampling was accomplished at an interval of 20, 40 and 60th days of the experimental period . Prior to weighing fish were caught with a fine mesh scoop net and individual length and weight were recorded to the nearest centimeter and gram, respectively . After 60 days of rearing, the final length (cm) and weight (g) of the individual fishes were recorded by using measuring tap and electronic balance.

Source of Information: Dhaka Univ. J. Biol. Sci. 24(1): 83-90, 2015 (January)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The results of the present study based on the growth parameters and proximate composition suggests that P. hypophthalmus fingerlings (7.0 ± 0.15 cm and 3.1 ± 0.25 g) should be fed at three times a day for maximum growth performances.

Knowledge Management: Journal