CN1195405C

CN1195405C - Artificial breeding and cultivating method of murrel

Info

Publication number: CN1195405C
Application number: CNB021126755A
Authority: CN
Inventors: 林祥钦; 林升忠; 林升贤
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-02-10
Filing date: 2002-02-10
Publication date: 2005-04-06
Anticipated expiration: 2022-02-10
Also published as: CN1366812A

Abstract

The present invention relates to an artificial breeding and cultivating method of murrels, which comprises the following steps of pond selection, parent fish selection and cultivation, artificial spawning induction, spawning fecundation, fish egg incubation and larva fish cultivation. In the process of spawning fecundation, after fertilized eggs are incubated into larva fishes, parent fishes are fished out. Parent fishes having the advantages of stabilization characteristics of genetics, muscular status, health and maturation are selected as fish seeds; in addition, the body weight of the parent fishes is above 0.75kg, the age is above 2 years old, and the ratio of male and female is 1/1. In the artificial breeding and cultivating method of murrels, the murrels which spawn once a year in the natural world can spawn without seasons by the artificial breeding method, the breeding rate and the survival rate are high, and a fishpond can stock twice in a year generally; the murrels and home-made fishes are mixed to culture, which can increase a part of fish crop with good quality; meanwhile, animals, such as rough fishes, shrimps, etc., in the fishpond can also be eliminated, and thus, the parent fishes can grow well.

Description

Biological engineering and the cultural method of murrel section fish

Technical field

The present invention relates to biological engineering and the cultural method of murrel section fish.

Background technology

The murrel fish is the general name of murrel section fish, because the murrel fish has the habit of other fish of predation, the past all is considered as it harmful fish of aquaculture always, does not allow it to exist in the pond, is catched and killed as removing object.But just because of it is the fish of carnivority, so its mouthfeel is good, nutrition is very abundant, and meat includes a large amount of protein, and the protein more contained than chicken and beef is all high, and its bone is perverse few, contain meat rate height, medically have eliminate blood stasis and promote tissue regeneration, nourishing such as takes good care of at effect, edible murrel fishing gear has myogenic, enriches blood, restrains, quickens the growth of soft textive granulation after operation or the wound, promotes the effect of wound healing.People are to the change of its understanding, and demand increases sharply, and the natural incubation rate of murrel fish is low, depends merely on and fishes for the needs that natural murrel fish can't be satisfied people.

Summary of the invention

The object of the present invention is to provide a kind of incubation rate, survival rate height, grow biological engineering and the cultural method of murrel section fish rapidly.

The technical solution adopted in the present invention is that the pond is selected, and------artificial induced spawning---cultivate, and the pond is selected to be meant and chosen the sterilization of will cleaning up the pond behind the fishpond by spawning and fertilization---hatch fish roe---prelarva for parent population seed selection, cultivation; Parent population seed selection, cultivation are meant and select stabilization characteristics of genetics, the healthy and strong anosis nothing wound of physique, and ripe parent population is for planting a fish; With the disinfectant sterilization, eliminate pests such as germ, wild fishes, frog's egg before the artificial induced spawning, treat parent population injection oxytocic drug after, put into the spawning pond net cage respectively, the hatching of laying eggs by individual size, the suitable grouping of female-male proportion; Prelarva is cultivated and to refer to that hatch fish roe goes out behind the small fish the cultivation of small fish, and in the spawning and fertilization process, incubating oosperm after going out small fish is pulled parent population out.Generally choosing behind the fishpond cleans up the pond with quicklime earlier as cement pit carries out disinfection, and the parent population seed selection, cultivates and is meant and selects stabilization characteristics of genetics, and the healthy and strong anosis nothing of physique is hindered, and more than the body weight 0.75kg, the age, ripe parent population was kind of a fish more than 2 years old, and female-male proportion is 1: 1.Except that murrel fish of the same race is fertilized, preferably select weak point in vegetative period, individual big fish to hybridize, as selecting snakehead, snakehead as parent population; The artificial induced spawning process is at first selected the spawning pond depth of water 60～75cm, use disinfectant such as potassium permanganate before hastening parturition, sterilizations such as gall nut, eliminate germ, wild fishes, pests such as frog's egg, use the quality softness, fresh weter hyacinth, pasture and water, water peanuts etc. are cooked the adult fish nest, after treating parent population injection oxytocic drug, by individual size, the suitable grouping of female-male proportion is put into spawning pond net cage water temperature respectively and is controlled at 20 °-28 °, it is HCG that the murrel fish is adopted oxytocic drug, injection volume is 10,000 unit/jin, a shot is finished, or divides biphasic injection intact, and be 15-20 hour twice blanking time, oestrus when laying eggs the peace and quiet that should keep environment parent population.After the parent population spawning and fertilization hatches small fish, parent population is pulled out, hatching process keeps the miniflow water state, constantly more renews water; Prelarva is cultivated and refers to be fed with meat and the high soft small worm of protein component earlier behind the hatch fish roe water outlet fish, as red worm water flea etc., treating that fish grows to begins to feed the fish slurry about 5cm, fish slurry is to wear into fresh fish to add an amount of salt behind the slurry and make, water temperature should remain on 20 °-28 °, seed rearing Tu Chi in hatching and prelarva cultivation.

The invention has the advantages that: with the way of murrel fish by the biological engineering of laying eggs in a year in the nature once, making lays eggs is regardless of season, reproduction rate, the survival rate height, make the fishpond can put secondary in a suitable place to breed in general 1 year, raising together with chinese carp both to increase a part of unblemished fish output, also can eat up the small fish in the pond simultaneously, animals such as shrimp, help the growth of parent population, the adaptability of murrel fish own is just very strong, to undesired water, the living environment of water temperature and anoxic has very strong adaptive faculty, strong stress resistance, lethality is low, attached respiratory apparatus is arranged, and lower oxygen concentration resistance helps the transportation of high-density breeding and live fish, hybridize by selecting good variety population, make these advantages of murrel fish more outstanding, and growth rate is accelerated the utilization crow, the kind first filial generation growth rate of snakehead hybridization is faster more than 50% than parent population.

Specific embodiment

The breeding method of murrel section fish has following several steps: the pond is selected, and------artificial induced spawning---cultivate, and after the fish-egg fertilization and hatching goes out small fish in the spawning and fertilization process, parent population pulled out by spawning and fertilization---hatch fish roe---prelarva for parent population seed selection, cultivation.Generally choose behind the parent fish rearing pond as 1000 square metres of cement pits, cleaning up the pond with quicklime earlier carries out disinfection, and the parent population seed selection, cultivates and is meant and selects stabilization characteristics of genetics, the healthy and strong anosis nothing of physique is hindered, and more than the body weight 0.75kg, the age is more than 2 years old, ripe parent population is kind of a fish, and female-male proportion is 1: 1.Except that murrel fish of the same race carries out the mating, select weak point in vegetative period, individual big fish to hybridize as parent population.As select each 500 tail of snakehead, snakehead; These two kinds of murrel fish filial generations are called the fragrant murrel in Fujian, growth cycle is short, individual big, meat is good, during artificial induced spawning, at first select 20-30 square metre of spawning pond area, depth of water 60-75cm, use disinfectant such as potassium permanganate before hastening parturition, sterilizations such as gall nut, eliminate germ, wild fishes, pests such as frog's egg are used the quality softness, fresh weter hyacinth, pasture and water, water peanuts etc. are cooked the adult fish nest, treat parent population injection oxytocic drug after, by individual size, female-male proportion component group is quite one to one put into the spawning pond net cage, and no longer the feeding water temperature is 20 °-28 °, and it is HCG that the murrel fish is adopted oxytocic drug, injection volume is 10,000 unit/jin, a shot is finished, or divides biphasic injection intact, and be 15-20 hour twice blanking time, oestrus when laying eggs parent population, keep the peace and quiet of environment.Parent population spawning and fertilization incubating oosperm process preferably keeps 25 °-28 ° of water temperatures stable, hatching process keeps the miniflow water state, constantly more renew water, after treating that small fish hatches 40-55 hour, parent population is pulled out, prelarva is cultivated and refers to that hatch fish roe goes out small fish and pulls parent population out, is fed with the high soft small worm of meat and protein component earlier, as red worm, the prelarva that water flea generally hatches was treated through 5-6 days, throw something and feed after yolk sac is absorbed fully fresh contain meat and the high soft small worm of protein component, oxygenation keeps the pond pure and fresh, after 5-6 days, on the former basis of throwing something and feeding, increase some new scarlet worms, slowly reduce the water flea feeding volume, to be converted into the red worm of throwing something and feeding.Fish grows to and begins to feed the fish slurry about 5cm, fish is starched with fresh fish, wear into and add 6-12 jin salt behind the slurry and make for per 100 jin, in hatching and prelarva were cultivated, the pond water temperature should remain on 20 °-28 °, the feeding young stage will keep the feed abundance in good time, keep water quality pure and fresh, the disinfectant of regularly splashing is along with the growth of fry, cross and sieve rarely, put into and to carry out pond sterilization clearly before the fishpond.Generally be separated out 1/10th space as seedling culture with close fishnet in one mu of fish pond, make its environment from little adaptation fishpond, for preventing the predation of birds, the top is added with protection network, separate mesh is drawn back after small fish one is double again.

Claims

1, biological engineering's method of a kind of murrel section fish, it comprises: the pond is selected, and------artificial induced spawning---cultivate by spawning and fertilization---hatch fish roe---prelarva for parent population seed selection, cultivation, it is characterized in that, parent population seed selection, cultivation are meant and select stabilization characteristics of genetics, the healthy and strong anosis nothing of physique is hindered, and more than the body weight 0.75kg, the age is more than 2 years old, ripe parent population is kind of a fish, and female-male proportion is 1: 1; Sterilize with disinfectant before the artificial induced spawning, eliminate germ, wild fishes, frog's egg, the murrel fish adopts medicine HCG to hasten parturition in the artificial induced spawning process, dose is 10,000 unit/jin, divide a shot or biphasic injection to finish, after treating parent population injection oxytocic drug HCG, put into the spawning pond net cage respectively, the hatching of laying eggs by individual size, the suitable grouping of female-male proportion; The parent population spawning and fertilization after hatching small fish is pulled parent population out, after prelarva is cultivated and refers to that hatch fish roe goes out small fish, through 5-6 days yolk sac throw something and feed after being absorbed fully fresh contain meat and the high soft small worm of protein component, oxygenation, keep the pond pure and fresh, fish grows to and begins to feed the fish slurry about 5cm, and water temperature should remain on 20 °-28 ° in hatching and prelarva cultivation.

2, biological engineering's method of murrel according to claim 1 section fish is characterized in that: be after hatching small fish 40-55 hour, parent population is pulled out.

3, biological engineering's method of murrel according to claim 1 section fish, it is characterized in that: selected male and female parent population is that two kinds of murrel flying fish hybridize in parent population seed selection, cultivating process.

4, biological engineering's method of murrel according to claim 3 section fish, it is characterized in that: selected parent population is snakehead and snakehead.