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Comparative Study on Growth Performance Between Vietnam Koi and Thai Koi in Mini Ponds

Prof. Dr. G. U. Ahmed
Professor
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh-2202,

Abstract/ Executive Summary:

An experiment was carried out to determine the comparative growth study of Vietnam koi (Anabus testudineus) and Thai koi (Anabus testudineus) for a period of 90 days in eight experimental ponds in the northern side of the Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh in 2011-2012. Four treatments were considered having two replicates. For Vietnam koi treatments were named VT₁and VT₂ and for Thai koi were TT₁ and TT₂. All the fish were of same age group having mean body weight of 0.30 g. Feeding frequency in all the treatments were two times a day. Fish were fed quality fish feed at a rate of 60% of their body weight for the first thirty days that was gradually reduced to 25% for the next thirty days and 10% till the termination of the experiment. The mean value of water temperature were 29.78 in VT₁, 30.42 in VT₂, 30.50 in TT₁ and 29.99°C in TT₂, dissolved oxygen were 7.21, 7.42 , 7.14 and 7.34 mg/l in VT₁, VT₂, TT₁ and TT₂_, respectively, mean pH values were 7.42 in VT₁, 7.29 in VT₂, 7.50 in TT₁ and 7.45 in TT₂, ammonia were 0.21, 0.24, 0.28 and 0.23 mg/l in VT₁, VT₂, TT₁ and TT₂, respectively and alkalinity were 200.00, 205.00, 210.00 and 205.00 ppm in VT₁, VT₂, TT₁ and TT₂, respectively. The result of the present study showed that the best weight gain of 80.00 g was observed in VT₁ after 90 days of culture period. Average weight gain (g) were 0.83, 0.88, 0.51 and 0.61; SGR (per day) were 3.93, 3.95, 3.65 and 3.71%; FCR were 1.50, 1.67, 1.70 and 1.90; survival rate were 78.50, 76.50, 90.00 and 82.00% and fish production were 7,839, 15,923, 5,519 and 11,820 kg/ha/3 months in VT₁, VT₂, TT₁ and TT₂, respectively. Growth of both the species was higher in lower stocking densities, whereas, production was increased in higher stocking densities. The present research findings suggested that Vietnam koi has high growth potential in comparison to Thai koi under mini pond culture condition.

Keywords: Vietnam koi, Thai koi, Growth, Production

Location: Mymensingh

Start Date: 00-00-2011

End Date: 00-00-2012

Program Area: Animal Health and Management

Commodity: Koi/Climbing

Objectives:

The present study aims at to investigate culture and growth potential of Vietnam koi and Thai koi in mini ponds.

Methodology:

The experiment was conducted in eight in mini ponds located in the northern side of the Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh. Lime was applied to the ponds at a rate of 0.5 kg/decimal. No fertilizer was used during pond preparation. Two treatments were considered for Vietnam koi and two treatments for Thai koi. In each treatment two replications were considered. Vietnamese koi and Thai koi fry were collected from Sarnalata Agro Fisheries Ltd., Radhakanai, Fhulbaria, Mymensingh. Commercial pellet feed named “Quality Fish Feed” were selected for the study. At the beginning of the experiment feed was supplied at a rate of 60% (1^st month), 25% (2^nd month) and 10% of their body weight of all treatments. Feed was supplied two times in a day (morning at 9.00 am and evening 5.00 pm). Hydrological parameters like temperature, dissolved oxygen pH, ammonia and alkalinity of the water of ponds were measured at fifteen days intervals. Temperature was recorded by using a Celsius thermometer (°C), D.O., pH, ammonia and alkalinity were measured directly by using water quality parameter measurement kits in mg/l between 8:30 to 9:30 am. Fish sampling was done at fifteen days interval in the morning at around 7:30 to 8:30 am. During each sampling fish were caught by cast net and weight was taken by precision weighing balance (accuracy up to 0.1 g). Weight gain (g), average daily weight gain (g), percent weight gain, specific growth rate (SGR), food conversion ratio (FCR), survival rate (%) and production (kg/ha/90days) parameters was used to evaluate the growth and production of fish.

Source of Information: J. Bangladesh Agril. Univ. 12(2): 405–409, 2014

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The results of the present study demonstrated that Vietnam koi has high growth performance in comparison with Thai koi. Vietnam koi looked like our native koi and has lucrative growth rate which attracts the farmers as well as customer’s attention. Many of the derelict mini ponds remained as derelict, which could be brought under Vietnam koi cultivation. Whereas, Vietnam koi attained marketable size (maximum size of 400g) within 3-4 months culture period. In such way villagers and poor farmers can earn money within very short time by culturing Vietnam koi in ponds remain in homestead and roadside. More over women can also participate in koi culture beside their household works and can contribute to family income. Thus Vietnam koi could be a good candidate in this regard for culture. Poverty alleviation could be increased and fate of poor farmers could be improved through culture of Vietnam koi individually or with other small indigenous species (SIS) of fishes.

Knowledge Management: Journal