CN101720688A

CN101720688A - Snakehead breeding method

Info

Publication number: CN101720688A
Application number: CN200910185973A
Authority: CN
Inventors: 赵林斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-12-16
Filing date: 2009-12-16
Publication date: 2010-06-09

Abstract

The invention discloses a snakehead breeding method which comprises the following steps of: building a parent fish pond; selecting and increasing parent fishes; controlling the oviposition and the incubation of the parent fishes; and feeding granulated feeds. The parent fish survival rate of the method is higher than 96 percent, the quality of the parent fishes is good, and the breeding method is simple and easy to operate.

Description

The cultural method of a kind of snakeheaded fish

Technical field

The present invention relates to aquaculture field, specifically is the cultural method of a kind of snakeheaded fish.

Background technology

Snakeheaded fish is fresh-water fishes, belongs to predacious fish, the little snakeheaded fish drinking water capture thing that moves about, big slightly instant small fish, shrimp.Big snakeheaded fish also eats little snakeheaded fish sometimes based on his fish and frog of Shiqi.Snakeheaded fish happiness is dwelt and is got sun at the bottom of the dense mud of pasture and water or at the water surface, and the snakeheaded fish that has is also often ensconced tree root stone and stalks other fishes in meeting.Contain protein, fat, 18 seed amino acids etc. in the snakeheaded fish meat, also contain calcium, phosphorus, iron and the multivitamin of needed by human; Be applicable in poor health, Hypoproteinemia, deficiency of spleen-QI and stomach-QI, malnutrition, the people of anaemia is edible, west wide is with that among the people often to look snakeheaded fish be precious tonic, in order to lactagogue, enrich blood; Snakeheaded fish have dispel the wind control infantile malnutrition due to digestive disturbances or intestinalparasites, invigorate the spleen and benefit qi, the effect of inducing diuresis for removing edema, so three northern areas of China often have puerpera, rheumatisant, children's's infantile malnutrition due to digestive disturbances or intestinalparasites patient to look for the snakehead fish to eat it, as a kind of auxiliary food therapy.Snakeheaded fish is the famous and precious fish of fresh water, and the title of " treasure in the fish " is arranged, and is the high-class healthy product of a kind of comprehensive nutrition, meat flavour deliciousness, and one to the nourishing treasure that is regarded as rehabilitation after being ill and old young void person.Current, the snakeheaded fish culture benefit is remarkable, has become one of aquaculture hot topic.

Summary of the invention

The invention provides the cultural method of a kind of snakeheaded fish, have survival rate height, quality better, the simple advantage of cultural method.

Technical scheme of the present invention is:

The cultural method of a kind of snakeheaded fish is characterized in that: may further comprise the steps:

(1) parent fish pond is built: it is 20-50m that area is selected in the breeding pond ², the dark 1.3-1.7m in pond, the pond slanted floor has the pond of the thick bed mud of 8-12cm, it is 1.5-2.5m that pond central authorities excavation has area ²Artificial fish nest, transplant water lettuce in the pond, increase more than the 1m with the net sheet around the pond;

(2) selection of parent population is educated with increasing: putting before the parent population 15 days, use 0.2-0.25kg/m ³Quicklime to the breeding pond carry out disinfection; Choose and reach that sexual maturity, individuality are big, growth performance is good, physique is healthy and strong, anosis nothing is hindered, the age of a fish be 2 ages above body weight be 1.4-1.6kg female milter throw in as parent population, near the fresh agreeable to the taste small fish of at regular time and quantity the fish nest, throwing something and feeding then, day feeding volume is the 5-8% of fish body weight, raising through 14-17 days is laid eggs voluntarily, is bred;

(3) the laying eggs, hatch of parent population: control pond water temperature is more than 18 ℃ when laying eggs, and hatch fish roe is controlled water temperature during the phase be 20-28 ℃, will in time parent population be changed over to other parent fish rearing pond after laying eggs, and can lay eggs once more after 25-35 days;

(4) seed rearing: after fish-egg was emerged 3-4 days, the open-mouthed bait of throwing something and feeding, opening were thrown something and fed and are selected well doneization rhombus feed for use; Throw something and feed behind 23-28 days open-mouthed baits, change and throw well doneization pellet; Behind well doneization of throwing something and feeding pellet 13-17 days, begin the branch pond and put in a suitable place to breed, well doneization of throwing something and feeding pellet is cultivated into large size fingerling.

The cultural method of described snakeheaded fish is characterized in that: described parent population lays eggs at need, reduces the pond water level, improves water temperature and the stimulation parent population of washing by water repeatedly; The method of described control pond water temperature is selected the method for building cool canopy and lagging facility being set for use; Hatched fry through 2-3 days after described snakeheaded fish lays eggs, squab fry is nutrition with the yolk sac, and yolk sac disappears after 3-4 days, and prelarva begins to ingest.

Parent population spawning rate of the present invention is the 1.5Kg parent population 15000-20000 grain of laying eggs, and the survival rate of fry is more than 96%.

Throw something and feed pellet and natural bait cultivated the growing state of snakeheaded fish seed

Embodiment

(1), parent fish pond is built: snakeheaded fish egg reproduction and fry increase to educate in same pond and carry out, and the water source convenience should be selected in the breeding pond, water quality is pure and fresh pollution-free, east-west, and the quiet local construction of environment, area are 20-30m ²Be advisable, generally be no more than 50m ², about the dark 1.5m in pond, the pond slanted floor has the thick bed mud of 10cm, makes the depths reach 80cm after adding water, the shallow 30cm of place, and central authorities build a 2m in the pond ²The artificial fish nest of size, other local an amount of transplanting water lettuce grows thickly pasture and water.Increase more than the 1m with the net sheet around the pond,, influence reproductive survival rate in order to avoid harmful organisms such as snake, the frog enter in the pond.

(2), the selection of parent population educates with increasing: putting before the parent population 15 days according to plan, to the fishpond with the sterilization of thoroughly cleaning up the pond of the quicklime of the 0.2-0.25kg/m3 degree of depth.In 4 months, the first tenday period of a month, from different adult fish culture ponds, choose and reach sexual maturity, individual big, growth performance is good, physique is healthy and strong, anosis nothing is hindered female milter, the female milter that hinders with the stalwartness that guarantees filial generation, anosis nothing is to guarantee the stalwartness of filial generation.The general parent population of selecting about above 1.5kg in 2 ages in our area.Every pond is put one group, near the fresh agreeable to the taste small fish of the fish nest, throwing something and feeding at regular time and quantity, and a day feeding volume is the 5-8% of fish body weight, through red about 15 days meticulous raising, makes and can lay eggs voluntarily, breed; As slowly not producing, can reduce that water level improves water temperature and method such as the stimulation of washing by water is repeatedly laid eggs the phase.The parent population of the general 1.5kg 15000-20000 grain of can laying eggs.

(3), the laying eggs, hatch of parent population: water temperature more than 18 ℃ snakeheaded fish can lay eggs, be typically chosen in the weather of calm calmness, carried out before dawn.Adhere to patrolling every day the pool, make an inspection tour fish nest and thick grass, as finding fish-egg, process can hatch fry in about 2-3 days, and squab fry is nutrition with the yolk sac, and yolk sac disappears after 3-4 days, and prelarva begins to ingest.To in time parent population be changed over to other parent fish rearing pond after laying eggs, can lay eggs once more about January.One group of parent population can produce 3 deutovums.Fish-egg during incubation, water temperature should remain between 20-28 ℃, be to keep the stable of water temperature, prevents sudden change, sets up cool canopy and lagging facility on the Ying Zaichi.When raining heavily, raindrop is directly beaten on fish-egg and fry.

(4) seed rearing: after fish-egg was emerged 3-4 days, the open-mouthed bait of throwing something and feeding, opening were thrown something and fed and are selected well doneization rhombus feed for use; The fry of throwing something and feeding behind 23-28 days open-mouthed baits is long to 5-6cm, changes and throws well doneization pellet; Well doneization of throwing something and feeding pellet is the long 8-9cm that arrives of fry after 13-17 days, begins the branch pond and puts in a suitable place to breed, well doneization of throwing something and feeding pellet, fry is long to 12-15cm behind the 13-17, the well doneization pellet that continues to throw something and feed cultivate into the large size fingerling of 18-20cm, and survival rate can reach more than 96%.

The red worm of throwing something and feeding can reach about 4cm through 25 days raising fry; Change and throw the fish slurry and add red worm through 25 days throw something and feed, fry grows to 6-7cm; Begin branch Chi Heyang, change throw the fish gruel will be through about 20 days take pains to foster, fry reaches about 12cm, begs and throws fish section and small-sized wild fishes through one month reinforced cultivating, the large size fingerling survival rate of cultivating into 16-18cm only is 62%.

Claims

1. the cultural method of a snakeheaded fish is characterized in that: may further comprise the steps:

(1) parent fish pond is built: it is 20-50m that area is selected in the breeding pond ², the dark 1.3-1.7m in pond, the pond slanted floor, the pond of the thick bed mud of 8-12cm is arranged, it is 1.5-2.5m that pond central authorities excavation has area ²Artificial fish nest, transplant water lettuce in the pond, increase more than the 1m with the net sheet around the pond;

2. the cultural method of snakeheaded fish according to claim 1, it is characterized in that: described parent population lays eggs at need, reduce the pond water level, improve water temperature and repeatedly bath stimulate parent population; The method of described control pond water temperature is selected the method for building cool canopy and lagging facility being set for use; Hatched fry through 2-3 days after described snakeheaded fish lays eggs, squab fry is nutrition with the yolk sac, and yolk sac disappears after 3-4 days, and prelarva begins to ingest.