CN1074244C

CN1074244C - Cultivating method for catfish

Info

Publication number: CN1074244C
Application number: CN98107109A
Authority: CN
Inventors: 孙德志
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-02-24
Filing date: 1998-02-24
Publication date: 2001-11-07
Anticipated expiration: 2018-02-24
Also published as: CN1227046A

Abstract

The present invention relates to a fish cultivating method, particularly to a method for cultivating a new generation of fish fingerlings by crossing Asian sheatfishes and catfishes. The method is characterized in that healthy and disease-free wild sheatfishes and catfishes in the Heilong river or the Songhua river are selected and cultivated for 3 to 4 years, and the sheatfishes and the catfishes are artificially crossed, philtred and cultivated at the beginning of June. New fish fingerlings have the genetic dominance of two distant fishes, overcome the defects of the two distant fishes, and have the advantages of fast growth, good quality, high nutrition and easy catching; the method can eliminate wild rough fishes in pools, and can improve the utilization ratio of water surfaces.

Description

The breeding method of catfish

The present invention is the hybridization breeding method of a kind of fish, specifically is the method that the fingerling catfish that makes new advances must Nian (also claiming the bosom fish) be cultivated with the hybridization of catfish in Asia six, the i.e. breeding method of catfish.

China 1993 hybridize successfully with German mirror lithium the squama mirror lithium that looses according to reports, and Japan 1992 breathes out with the big horse of squama Kazakhstan greatly hemp and hybridizes successfully, and these all belong to nearly edge and hybridize.But the report that pair Asia six palpus Nian and catfish distant hybridization success are not arranged at present as yet.Six must have two kinds by Nian, and a kind of is the Europe six palpus Nian (siurus glanis) that are distributed in Europe; Another kind is that six palpus Nian or bosom fish must be called for short by Nian (siurus soldatoui) in the Asia six that is distributed in Heilongjiang river, this fish fast growth, and maximum individual weight can reach more than the 50kg, but meat is thicker relatively.Catfish (parasilus asotus) is though growth rate is must Nian fast not as six, its fine and tender taste, and delicious flavour is regarded as nutrient excellent product.These two kinds of fishes belong to equal, but are the distant relative.

The objective of the invention is to propose the hybridization of Asia six palpus Nian and catfish.Utilize the prepotency of two kinds of fish with far consanguinity classes, cultivate a kind of good fingerling catfish fast, that meat is beautiful of growing.To satisfy people's needs.

Technical scheme of the present invention is that six palpus Nian (siurus soldatoui) carry out artificial hybridization with catfish (parasilus asotus) with the Asia, cultivate fingerling catfish of new generation.

Its hybridization breeding method is:

1, seed selection fish, the wild health in collection Heilungkiang or Song Hua River, anosis six palpus Nian and catfish kind cover are supported in the pond, cultivate through 3-4, and it is kind of a fish that six palpus Nian of about 15 kilograms-20 kilograms of body weight and 1.5 kilograms-2.5 kilograms catfish are selected in the back.

2, promote the sexual maturity, hybridization, cultivate, six must Nian annual 20-June 30 June are for laying eggs row's essence phase, at the beginning of catfish annual 5 the end of month to 6 month for laying eggs row's essence phase, at the beginning of 5 the end of month to 6 month, begin the fingerling artificial propagation, with six palpus Nian female (or male) parent population and catfish hero (or female) parent population of cultivating early stage, inject the hormone of promoting the sexual maturity (the smart phase also can not inject the hormone of promoting the sexual maturity to the row of laying eggs) simultaneously as catfish, make two kinds of parent population sexual glands reach synchronous ovulation, arrange smart state, adopt the artificial insemination method, impel the female six palpus Nian that inject the hormone of promoting the sexual maturity that ovum is produced in container, with the male catfish sexual gland of finger extruding its seminal fluid being let out six simultaneously must stir on the catfish ovum, with adding a small amount of urea unsticking in yellow mud or the yellow mud, after fertilized egg moved to carry out the flowing water hatching in the incubator, the flowing water temperature is controlled at 16-23 ℃, treat that fertilized egg was through hatching in 3-5 days, put into net cage during the flat trip of fish or bulk container is raised, the high protein feeds such as yolk of throwing something and feeding are supported and put into the same carp in pond to the juvenile fish of 1.5-2cm, the silver carp cover is supported.

But hybridization can be selected also reciprocal cross of quadrature for use, and quadrature is that six palpus Nian make parent, and catfish does the male parent, and reciprocal cross six must be done the male parent by Nian, and catfish makes parent.

Technique effect of the present invention is, the catfish build of new generation that cultivates through hybridization has 4-6 palpus for the ship shape jackknife sit up rises.Growth is remarkable, and meat is good.With six palpus Nian be that maternal orthogonal experiment acquisition first-filial generation growth rate is 5.4 times of catfish, is the first filial generation that maternal reciprocal cross test obtains with the catfish, and growth rate is 3.2 times of catfish.The first filial generation (catfish) of two kinds of test acquisitions contains protein content 17.1%-17.3%, and parent six must contain protein 16 .7% by Nian, and catfish contains protein 16 .8%, is higher than the parent; The crude fat content 6.28% of first-filial generation, parent catfish crude fat content 1.59%, six palpus Nian crude fat content 1.34%, first-filial generation is 3-4 times of parent, be rich in EPA and these unsaturated fatty acids of DHA have significant reducing blood lipid, prevent cardiovascular and cerebrovascular disease, the function of brain tonic, anti-cancer by the fat content height of doing first-filial generation, hybridization a new generation is a kind of nutritive value and the high fingerling of economic worth.

First-filial generation can effectively be utilized water body in addition, improves the economic benefit in pond.Because small fish and marketable fish wild in the pond are striven bait, are striven oxygen, so reduced economic benefit, and the catfish of first-filial generation mainly is to be bait with wild small fish, it is estimated that measuring the 3kg small fish can transform 1kg first-filial generation catfish, and the mixed economy that can improve fish is worth 15-20 doubly.

The catfish of the first-filial generation 5-8cm that tilts upward respectively end to end that moves about at the bottom, belly lands, and has therefore improved the rate of fishing for greatly, and six must Nian and catfish be in-line at the bottom, bad fishing for.

First-filial generation has the prepotency of two kinds of fish with far consanguinity in a word, has overcome the shortcoming of two kinds of fish with far consanguinity, has fast growth, and is best in quality, is of high nutritive value, and easily fishes for, and can remove the wild trash fish in the pond, improves the advantage of water surface availability.

Realize embodiments of the invention:

One, gathering healthy, anosis wild female six palpus Nian and ripe male catfish supports in 800 hectares of water surfaces for aquaculture, cultivate through 3-4, select at the beginning of 6 months body weight be 20 kilograms female six must Nian and body weight be that 1.5 kilograms male catfish begins artificial propagation with six hormones of must the female parent population injection of Nian promoting the sexual maturity, impel female six must ovum be produced in container catfish.Sexual gland with the male catfish of finger extruding is let out on six palpus catfish ovum its seminal fluid simultaneously, stir then, carry out unsticking with yellow mud, after fertilized egg moved to carry out flowing water hatching in the incubator, the flowing water temperature is controlled at 16-23 ℃, treats that fertilized egg was through hatching in 3-5 days, putting into net cage when fish is put down trip raises, throw something and feed yolk or high protein feed are waited to grow and juvenile fish are put into the pond behind the fish fat and support with other fishes covers, and it is 50 tails/800m that cover is supported density ²

Two, gather healthy, anosis male six palpus Nian and sexually matured female catfish, support in 800 kilograms of water surfaces for aquaculture, selecting body weight June is that 15 kilograms male six palpus Nian and 2.5 kilograms female catfish inject the hormone of promoting the sexual maturity for simultaneously male six palpus catfish and female catfish, make two kinds of piscinity glands reach ovulation, arrange smart state, adopt the artificial insemination method, impel female catfish that ovum is produced in container, the seminal fluid of male six palpus Nian is let out on the catfish ovum, stir then, carry out unsticking with yellow mud, after fertilized egg moved to carry out flowing water hatching in the incubator, the flowing water temperature is controlled at 16-23 ℃, treats that fertilized egg was through hatching in 3-5 days, putting into net cage when fish is put down trip raises, throw something and feed yolk or high protein feed are waited to grow and juvenile fish are put into the pond behind the fish fat and support with other fishes covers, and cover is supported density 50 tails/800m ²

Embodiment carries out in mechanization fishing ground, Dong Fa township, Tong Fa village, Zhaodong City, Heilongjiang Province in June, 1994,2.25 kilograms of the fish weight limits after juvenile fish 400,000 tails to the 1997 year hybridization in October of input hybridization back, long 56 centimeters of body.

Claims

1, the breeding method of catfish is characterized in that carrying out artificial hybridization with Asia six palpus Nian (siurussoldatoui) with catfish (parasilus asotus) cultivates fingerling catfish of new generation.

2, the breeding method of the described catfish of claim 1 is characterized in that its hybridization breeding method is:

1., the seed selection fish, gather the wild health, anosis six in Heilungkiang or Song Hua River must Nian and the catfish cover support in the pond, after 3-4 cultivates, select six of about 15 kilograms-20 kilograms of body weight must Nian and body weight be that 1.5 kilograms-2.5 kilograms catfish is cooked kind of a fish.

2., promote the sexual maturity, hybridization, cultivate, six must Nian annual 20-June 30 June are for laying eggs row's essence phase, at the beginning of catfish annual 5 the end of month to 6 month for laying eggs row's essence phase, at the beginning of 5 the end of month to 6 month, begin the fingerling artificial propagation, with six palpus female parent populations of Nian and the male parent population of cultivating early stage of catfish, inject the hormone of promoting the sexual maturity simultaneously, make two kinds of parent population sexual glands reach synchronous ovulation, arrange smart state, adopt the artificial insemination method, impel the female six palpus Nian that inject the hormone of promoting the sexual maturity that ovum is produced in the container, with the male catfish sexual gland of finger extruding its seminal fluid being let out six simultaneously must stir on the catfish ovum, the back is with adding a small amount of urea unsticking in yellow mud or the yellow mud, after the unsticking fertilized egg moved to and carry out the flowing water hatching in the incubator, and the flowing water temperature is controlled at 16-23 ℃, treat that fertilized egg was through hatching in 3-5 days, put into net cage during the flat trip of fish or bulk container is raised, the yolk high protein feed of throwing something and feeding is supported and put into the same carp in pond to the juvenile fish of 1.5-2cm, the silver carp cover is supported.

3, the breeding method of the described catfish of claim 1 is characterized in that the hybridization of Asia six palpus Nian and catfish, can select for use quadrature six to make parent by Nian, and catfish does the male parent, also can select for use reciprocal cross six to do the male parent by Nian, and catfish makes parent.