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Effect of Pituitary Gland Doses on Artificial Propagation of Guchibaim, Mastacembelus Pancalus (hamilton)

M. M. Rahman
Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

M. I. Miah
Department of Fisheries, Ministry of Fisheries and Livestock, Dhaka, Bangladesh. Email: pdridrism41@yahoo.com

K. R. Hasan
Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

S. M. Farid
Department of Fisheries, Ministry of Fisheries and Livestock, Dhaka, Bangladesh. Email: pdridrism41@yahoo.com

Abstract/ Executive Summary:

Artificial propagation of Mastacembelus pancalus was conducted in order to determine the optimum dose of pituitary gland (PG) hormone at the hatchery of the Field Laboratory Complex, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh. The present study consisted of two trials and each trial had four treatments (T₁, T₂_, T₃ and T₄_, respectively) with three replications of each. In the experiment single dose and double dose had been used for T₁, T₂, T₃ and T₄_, respectively to evaluate the efficiency on ovulation rate, fertilization rate, and hatching rate of M. pancalus eggs. The hatchlings were reared in aquarium up to 30 days and survival rate was determined. Treatment-3 (T₃) of double dose (170mg PG kg-1 and 60mg PG kg-1 body weight of fish for female and male respectively) showed better results in terms of ovulation rate (90.03±2.56%), fertilization rate (90±0.81%), hatching rate (80±1.84%), and survival rate (40.00±3.19%) was recorded than other treatments of single and double dose. The water temperature was recorded 27 to 31°C. In the present study, treatment-3 (T₃ in double dose) was the best findings in terms of ovulation rate, fertilization rate, and hatching rate which can be used in artificial propagation of M. pancalus for the development of hatchery production. May and June are the suitable months for artificial propagation of the said species.

Keywords: Artificial propagation, PG, Mastacembelus pancalus

Location: In the hatchery of the Field Laboratory Complex, Faculty of Fisheries,BAU, Mymensingh

Start Date: 00-05-2008

End Date: 00-06-2008

Program Area: Variety and Species

Commodity: Fish

Objectives:

(i) To determine the optimum dose of PG hormone for artificial propagation of M. pancalus,

(ii) To determine the ovulation, fertilization and hatching rate

(iii) To develop a protocol for its large scale breeding.

Methodology:

The experiment was conducted in the hatchery of the Field Laboratory Complex, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh during the period from May to July 2008. Collection of fish About 80 Mastacembelus pancalus both males and females were collected from different places of Mymensingh district. They were stocked in the ponds during the period from January to March, 2008 and reared up to full maturity.Maintenance of brood stock Proper rearing and maintenance of brood stock of both sexes to prime mature condition is a pre-requisite for successful artificial propagation. The fishes were fed with a mixture of mustard oil cake, rice bran, wheat bran, fish meal, vitamin premix and di-calcium phosphate at the ratio of 20:33:25:20:1:1 by weight at 4 - 5% of total body weight of fish per day. The ripe male and female brood fish were selected based on physical and visual examination of secondary sexual characteristics i.e., swollen abdomen and genital openings. Only healthy and uninjured fishes were selected for artificial propagation.

Source of Information: J. Bangladesh Agril. Univ. 9(2): 305–310, 2011 ISSN 1810-3030

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It is evident from the findings that PG extract is effective in induction of spawning of M. pancalus under controlled hatchery condition. PG extract at the rate of 170 mg/kg body weight of brood fish appeared to be the suitable dose for its artificial propagation.The hatchery operators may use pituitary gland (PG) at this dose for artificial propagation of M. pancalus.

Knowledge Management: Journal