CN105660486A - Breeding method for intercropping mullet parents and fugu obscurus - Google Patents

Abstract

The cultivation method of raising pufferfish obscurus with parents of barracuda consists of stocking of reserve parents of pufferfish obscurus, stocking of puffer puffer obscurus species, daily feeding management, starting up of puffer obscurus obscurus, and fishing of puffer obscura obscurus, and is characterized in that in winter Stock the back-up broodstock of barracuda, clean and disinfect the pond before stocking, inject water after 5 days, and stock 2-year-old back-up broodstock of barracuda after 10 days of water injection, without feeding bait; in spring, when the water temperature in the outdoor earthen pond reaches 14-15°C, it will survive the winter The 2-year-old Puffer puffer species are nested in outdoor earthen ponds, fed twice a day, and the daily feeding amount is 3-8% of the body weight of Puffer puffer species obscura, and the next feeding amount is adjusted according to the feeding situation , change the water once a month in the early stage of breeding, and change the water once every 2 weeks in the middle and late stages; during the breeding period, the breeding density of puffer obscurus is divided once, and in the middle and late November, the remaining puffer puffer obscura will be caught first Go into the shed to survive the winter, and the barracuda will continue to stay in the pond for cultivation until the beginning of January to February when the water temperature is low and fish in dry ponds.

Description

Cultivation method of Puffer obscurus in nesting with parents of barracuda

technical field

The invention relates to aquaculture, in particular to a method for cultivating pufferfish obscurus nested with parents of barracudas.

Background technique

Barracuda (Chelonhaematocheilus), also known as red-eyed mullet, commonly known as red-eyed mullet and meat stick, is an offshore bottom fish that eats algae and organic debris in the bottom mud. It is lively and good at jumping, and likes to inhabit river estuaries and bays. , my country is distributed in the Bohai Sea, the Yellow Sea, the East China Sea and the South China Sea. The fish has the characteristics of wide temperature, wide salt, wide food, short food chain, fast growth and strong reproductive ability, and is a very valuable aquatic product.

Fugu obscurus (Takifuguobscurus) has a mild temperament and strong disease resistance, and is suitable for mass farming. The fish belongs to Osteichthyes, Fuguformes, Fugu suborder, Fugidae, Fugu genus, commonly known as puffer, mainly distributed in the East my country Sea, Yellow Sea and Bohai Sea of China. sex. Its muscles are as white as frost, tender and delicious, and rich in nutrition. It is known as "eat pufferfish desperately" and "eating pufferfish is tasteless". In addition, its viscera and blood contain highly toxic neurotoxins, which are of great medicinal value in medicine.

In view of the excellent characteristics of barracuda, it has been paid more and more attention in the aquatic industry. Today, with the increasing demand for seedlings, wild fishing is no longer enough, and it is necessary to develop artificial breeding to solve the problem of seed supply and demand. With the deepening of barracuda artificial breeding technology, how to cultivate the barracuda parent is the key to the problem. Therefore, it is imperative to explore an economical, feasible, and effective cultivation model.

Contents of the invention

The purpose of the present invention is to provide a kind of three-dimensional pond breeding mode, which can not only make full use of the pond space to cultivate the parents of barracuda and puffer obscura, but also avoid the waste of bait, effectively maintain the water quality stability of the culture pond, reciprocity and mutual benefit, increase output, improve economic benefits.

The production technical steps of the present invention include: stocking of back-up parents of barracuda, stocking of puffer fish species, daily feeding and management, catching of puffer puffer, and fishing of parents of pike. Outdoor earthen ponds are used, and each 3-5 mu pond is equipped with a 1.5Kw aerator; 15 days before stocking, the pond is disinfected with 150-200kg/mu quicklime; water is injected after 5 days of disinfection, and the water source is natural seawater with a salinity of 5 -15, filter with a 60-mesh silk screen; after 10 days of water injection, the color of the water will become thicker, and the 2-year-old pike backup broodstock will be stocked at a stocking density of 80-100 fish/mu. After the pike backup broodstock is stocked, no bait should be fed; When the temperature rises and the water temperature in the outdoor earthen pond reaches 14-15°C, the overwintering 2-year-old fugu obscurus fingerlings are gradually nested in the outdoor earthen pond for breeding, and the nesting density is 1000-1200 fish/mu; the fugu obscurus is stocked Afterwards, feed 2 times a day, the daily feeding amount is 3-8% of the body weight of puffer puffer species, the bait is eel feed containing 45% crude protein, and the powder feed is made into dough before feeding. Feed on the bait table. After each feeding, check the eating situation. It is advisable to finish eating within 2 hours. At the same time, adjust the next feeding amount in time according to the feeding situation. Change the water once every 2 weeks; during the nesting period, it is necessary to pull the net to divide the breeding density of puffer obscurus once, that is, remove 1/2 to 2/3 of the quantity to other breeding ponds, and remove the remaining dark pufferfish in mid-to-late November. Pufferfish are first caught in sheds for overwintering. Barracudas continue to be cultured in ponds until the beginning of January and early February when the water temperature is low for fishing in dry ponds. Those that meet the requirements are selected as broodstock for intensive cultivation.

Compared with the prior art, the outstanding features of the present invention are: 1) more effective and large-scale cultivation of barracuda parents, generally speaking, both the quality and the quantity of barracuda parents are available. When harvested, the body of barracuda is strong, the body surface is smooth and shiny, and the female has already shown the outline of abdomen. Parents of barracudas can be easily obtained without increasing investment. 2) Two kinds of fish in different growth areas are polycultured together, which effectively utilizes the breeding space of the pond, improves the utilization efficiency of the pond water body, and avoids waste of resources. 3) The barracuda was mixed with puffer. It is more noteworthy that the barracuda fed on the organic debris at the bottom of the pond and at the same time, they also ingested the feed debris scattered by puffer in the process of biting the doughy eel feed. It not only reduces the waste of bait, the bait coefficient can be reduced by 0.5 year-on-year, but also makes the water quality of the pond more stable, keeping the water quality fertile, alive and cool. 4) The survival rate of breeding can be increased by 5-10%. The invention is easy to operate and easy to be accepted and popularized by people.

detailed description

The production technology steps include stocking of back-up parents of barracuda, stocking of puffer fish species, daily feeding and management, start-up of puffer obscurus, and fishing of barracuda: Step 1. Stocking of back-up parents of barracuda: Barracuda is irritable and stressful The reaction is relatively severe, so barracuda stocking is carried out in winter when the water temperature is low from January to February, which can reduce mechanical damage during fishing, selection, handling and other operations, and improve the survival rate of breeding. Outdoor earthen ponds are used, and each 3-5 mu pond is equipped with a 1.5Kw aerator; 15 days before stocking, first use 150-200kg/mu of quicklime to clean the pond for disinfection; after 5 days of disinfection, water is injected, and the water source is natural seawater, using 60 mesh Filter with silk screen, salinity 5-15; stock 2-year-old pike backup parents after 10 days of water injection, the size is 1000-1500 g/tail, stocking density is 80-100 fish/mu, 2-year-old pike backup parents are not used after stocking Feeding. Step 2. Stocking puffer puffer fish species: When the temperature rises in spring, the water temperature in the outdoor earthen pond rises to 14-15°C. At this time, puffer puffer fish species with an average size of 100-150 g/tail can be stocked for overwintering Gradually nested in outdoor earthen ponds for breeding, nesting density of 1000-1200 fish/mu. Step 3. Daily feeding and management: After overwintering puffer puffer species are nested, feed 2 times a day, the daily feeding amount is 3-8% of the fish body weight, and the bait is eel feed containing 45% crude protein. Before feeding, make the powdered feed into a dough shape, and feed it on the bait table. Set up 2-3 bait tables per mu. The length and width of the bait table are preferably 60cm×60cm. After each feeding, check the eating situation. It is advisable to finish eating within 2 hours. At the same time, adjust the amount of feeding next time according to the feeding situation. Change the water once a month in the early stage of breeding (that is, from April to June), and every 2 weeks in the middle and late stages (that is, from July to November). Change the water once to keep the water fresh. Step 4: Fish pufferfish obscura is caught: until the end of August, remove 1/2 to 2/3 of the pufferfish obscura with an average size of 200-250 grams per tail, so as to maintain a reasonable culture in the earthen pond density. By the middle and late November, the remaining puffers will be caught for sale or put into sheds for overwintering. After 3-4 times of pulling the net, more than 97% of puffers can be caught, with an average size of 250-300 grams per tail , the survival rate is above 93%. Step 5. Fishing for pike: After the fugu obscura is pulled into the net, the pike will continue to be cultured in the earthen pond until the beginning of January and February when the water temperature is low, and the pike will be fished in dry ponds. The average size of pike is 2500-3500 grams per tail. The survival rate is above 95%. Above-mentioned implementation mode is in No. 1 South Pond of Shanghai Institute of Fisheries Technology Center, with an area of 3 mu, east-west, and 2.5 meters deep in the pond. On February 12, 2015, 280 back-up parents of 2-year-old barracuda were stocked, with a size of 1000-1500 g/tail. On April 8, 3000 pufferfish obscurus were stocked, with a size of 100-120 g/tail. The net was pulled on August 25. Remove 1,800 fugus obscurus with an average size of 225 grams per tail, and catch the remaining 1,021 fugus obscurus with an average size of 291 grams until November 21. A total of 2,821 fugus obscurus were harvested. The survival rate of cultivation was 94%, the average yield per mu was 468 catties, and the average net yield per mu was 262 catties; on January 19, 2016, a total of 274 parents of pike were harvested in dry ponds, with a survival rate of 98% and an average size of 3036 g. The yield per mu is 555 catties, and the average net yield per mu is 326 catties; equivalent to the net increase benefit per mu: 3,000 yuan.

Claims (3)

1. Mugil cephalus parent overlaps the breeding method of foster Puffer fish, put in a suitable place to breed by Mugil cephalus standby parent, Puffer fish fingerling stocking, daily feeding and management, Puffer fish harvesting, Mugil cephalus parent fish for and form, it is characterized in that first putting in a suitable place to breed in the winter time Mugil cephalus reserve parent fish, adopting outdoor earth pond, every 3-5 mu pond is equipped with 1 1.5Kw aerator; Putting in a suitable place to breed first 15 days, first with the quick lime of 150-200kg/ mu, pond is cleared and sterilized; Water filling after sterilizing 5 days, water source is natural sea-water, salinity 5-15, with the bolting silk net filtration of 60 orders; After water filling 10 days, water colour turns dense, puts the Mugil cephalus reserve parent fish in 2 ages in a suitable place to breed, and breeding density is 80～100 tails/mu, and Mugil cephalus reserve parent fish need not be thrown something and fed after putting in a suitable place to breed bait; Go up to temperature in spring, when the water temperature of outdoor earth pond reaches 14-15 DEG C, by survive the winter 2 age Puffer fish fingerling progressively overlap and support outdoor earth pond and cultivate, density supported by set is 1000-1200 tail/mu; After Puffer fish is put in a suitable place to breed, bait throwing in every day 2 times, daily ration of feeding is the 3-8% of Puffer fish fingerling body weight, and bait is the eel feed containing crude protein 45%, before throwing something and feeding, mash feed is fabricated to dough, throw something and feed in bait table, after throwing something and feeding, food situation will be checked every time, ate up in 2 hours and be advisable, adjust the daily ration, feeding quantity of next time in time according to situation of ingesting, cultivation early stage monthly changes water 1 time, and middle and late stage changes water 1 time in every 2 weeks simultaneously;Set support period need to draw in the net to be divided by Puffer fish cultivation density rare once, namely removal 1/2 to 2/3 quantity is to other culturing pool, to mid or late November, remaining Puffer fish first harvesting is entered canopy survive the winter, Mugil cephalus continue to stay in pond cultivate water temperature at the beginning of 1～2 month relatively low time carry out the dry pool and fish for, selecting and remain satisfactory carries out reinforced cultivating as parent fish.

2. Mugil cephalus parent according to claim 1 overlaps the breeding method of foster Puffer fish, it is characterized in that Mugil cephalus standby in the 2 ages parent's specification put in a suitable place to breed is 1000～1500 grams/fish.

3. Mugil cephalus parent according to claim 1 overlaps the breeding method of foster Puffer fish, it is characterized in that 2 age Puffer fish fingerling average size be 100～150 grams/fish.