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Production of Cross Koi Through Crossing Between Local and Thai Koi (anabas Testudineus, Bloch)

A.K.S. Ahammad
Department of Fisheries Biology and Genetics, Bangladesh Agricultural University, Mymensingh-2202

M.M.R. Khan
Department of Fisheries Biology and Genetics, Bangladesh Agricultural University, Mymensingh-2202

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

M.E. Islam
Department of Biotechnology, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

The present study was undertaken for the production of cross koi through crossing between local and Thai koi (A. testudineus). Four crossing groups viz. parent Thai (P-T), parent local (P-L), Thai female and local male (F1-A), and local female and Thai male (F1-B) were designed to produce the cross koi. The ovulation rate was found to be the highest (100%) in (P-T) crossing group followed by (P-L), (F1-B) and (F1-A) crossing groups (80, 80 and 60% respectively). On the other hand, the fertilization rate was significantly (P<0.05) higher in (P-L) than (P-T), (F1-A) and (F1-B) cross groups. The highest hatching rate was also observed in (P-T) cross-group which was significantly (P<0.05) different from that of the other groups. However, the highest survival rate was found in (Fi-A) followed by (P-T), (P-L) and (F1-B) crossing groups. The highest growth (length and weight) was found in (P-T) cross-group followed by (F1- A), (F1-B) and (P-L) cross groups after 28 days of rearing. Results indicate that cross koi might have important implications for our aquaculture production.

Keywords: Cross koi, Local and Thai koi, Anabas testudineus

Location: Backyard hatchery of the Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh

Start Date: 01-05-2007

End Date: 03-06-2007

Program Area: Animal Health and Management

Commodity: Koi/Climbing

Objectives:

Several hybrids have been produced in the Mediterranean between red seabream and common dentex (Dentex dentex) and the hybrid produced was found to be fast-growing in cage culture (Colombo et al., 1998). Therefore, the present work to cross local koi with Thai koi through hormone-induced spawning was an attempt to produce cross koi that is supposed to have enormous potential for aquaculture production.

Methodology:

The experiment was conducted in the Backyard hatchery of the Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh from 1 May to 3 June 2007. Live adult local and Thai koi weighing 2 kilograms were procured from Brahmaputra Fish Seed Complex, Shambhuganj during December, 2006 and were reared for 15 days in two 280 m² earthen rearing ponds. Before stocking, the ponds were fertilized with cowdung @ 750 kg/ha/week. The fish were fed with a supplementary feed comprising of 60% rice bran, 25% mustard oil cake and 15% fish meal. 20 females of local and Thai koi having average weight of 53.0±9.500 g and 61.70±21.045 g, respectively, and 20 males of local and Thai koi having average weight of 30.35±5.207 g and 33.35±6.207 g, respectively were stocked in four fiberglass tank each having 30 L of tap water. Four crossing groups viz. (P-T), (P-L), (F1-A) and (F1-B) having three replications each were designed.

Source of Information: J. Bangladesh Agril. Univ. 6(1): 153-158, 2008 ISSN 1810-3030

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

An attempt was made to produce hybrids of Thai and local koi, and indicated some potentials. Further trials with much more variables are needed to arrive at a conclusion.

Knowledge Management: Journal