Induced Breeding Practices of the Freshwater Fish Hatcheries in Bangladesh

International Journal of Oceanography & Aquaculture Pub Date : 1900-01-01 DOI:10.23880/ijoac-16000225

Chakraborty Bk

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Abstract

This study was conducted on the fish hatcheries of the 8 division of Bangladesh to identify about induced breeding practices of different hatcheries. About 6 native species viz. Rui (Labeo rohita), Catla (Catla catla), Mrigel (Cirrhinus mrigala), Calibaush (Labeo calbasu), Bata (Labeo bata) and Gonia (Labeo gonius), 7 exotic species viz. Silver carp (Hypopthalmicthys molitrix), Bighead carp (Hypopthalmicthys molitrix), Grass carp (Ctenopharyngodon idella), Common carp (Cyprinus carpio), Black carp (Mylopharyngodon piceum), Thai pangus (Pangasius sutchi), Thai puti or raj puti (Barbonymus gonionotus) and 06 Indigenous species pubda (Ompok pabda), Gulsa (Mystus cavasius), Tengra (Mystus tengra), Koi (Anabas testudineus), Shing (Heteronopneustes fossilis) and Magur (Clarius batrachus) were recorded for the induced breeding practice of fresh water of Bangladesh. Three types of inducing agents viz. PG (Pituitary Gland), HCG (Human Chorionic Gonadotropin) and GnRHa (Gonadotropin Releasing Hormone analogues) were used for induced breeding. Ovulation rate of Indian major carps and other exotic fish species were 65, 70, 74, 80, 84, 88, 92, 96, 98, 90 and 88%, respectively. The regression type is Polynomial and the equation is y = -0.751x2 + 11.36x +49.705 (R2 = 0.8449). The hatching rate were recorded at the rate of 52, 55, 62, 71, 77, 80, 86, 90, 94, 80 and 62%, respectively in different hatcheries and the regression type is Polynomial and the equation is y = -1.1254x2 + 15.96x +29.182 (R2 = 0.8328). The ovulation rate of 06 Indigenous fish species were 70, 76, 81, 84, 86, 88, 97, 98, 99, 90, 84 and 70%, respectively. The regression type is Polynomial and the equation is y = -1.0082x2 + 12.96x + 53.97 (R2 = 0.8749). The hatching rate were recorded at the rate of 58, 61, 72, 76, 82, 91, 93, 94, 73, 68 and 6%%, respectively. The regression type is Polynomial and the equation is y = -1.289x2 + 16.269x +36.958 (R2 = 0.849).

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孟加拉国淡水鱼孵化场的诱导繁殖方法

本研究对孟加拉国8区的鱼类孵化场进行了研究，以确定不同孵化场的诱导繁殖方法。约6个本地种:鲤鱼(Labeo rohita)、鲶鱼(Catla Catla)、鲶鱼(Cirrhinus mrigala)、鱼鱼(Labeo calbasu)、鱼鱼(Labeo Bata)和鱼鱼(Labeo gonius); 7个外来种:鲢鱼(Hypopthalmicthys molitrix)、鳙鱼(Hypopthalmicthys molitrix)、草鱼(Ctenopharyngodon idella)、鲤鱼(Cyprinus carpio)、黑鱼(Mylopharyngodon piceum)、泰国鲶鱼(Pangasius sutchi)。在孟加拉国淡水引种养殖实践中，记录了泰国puti或raj puti (Barbonymus gonionotus)和6种本地物种pubda (Ompok pabda)、Gulsa (Mystus cavasius)、Tengra (Mystus Tengra)、Koi (Anabas testudineus)、Shing (Heteronopneustes化石)和Magur (Clarius batrachus)。采用PG(垂体)、HCG(人绒毛膜促性腺激素)和GnRHa(促性腺激素释放激素类似物)三种诱导剂进行诱导育种。印度鲤鱼和其他外来鱼类的排卵率分别为65%、70%、74%、80%、84%、88%、92%、96%、98%、90%和88%。回归类型为多项式，方程为y = -0.751x2 + 11.36x +49.705 (R2 = 0.8449)。不同孵化场的孵化率分别为52、55、62、71、77、80、86、90、94、80和62%，回归类型为多项式，方程为y = -1.1254x2 + 15.96x +29.182 (R2 = 0.8328)。06种本地鱼类的排卵率分别为70%、76%、81%、84%、86%、88%、97%、98%、99%、90%、84%和70%。回归类型为多项式，方程为y = -1.0082x2 + 12.96x + 53.97 (R2 = 0.8749)。孵卵率分别为58、61、72、76、82、91、93、94、73、68和6%。回归类型为多项式，方程为y = -1.289x2 + 16.269x +36.958 (R2 = 0.849)。

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International Journal of Oceanography & Aquaculture

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