CN102283152A - Method for breeding fry of scaphesthes macrolepis - Google Patents
Method for breeding fry of scaphesthes macrolepis Download PDFInfo
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- CN102283152A CN102283152A CN2011101943729A CN201110194372A CN102283152A CN 102283152 A CN102283152 A CN 102283152A CN 2011101943729 A CN2011101943729 A CN 2011101943729A CN 201110194372 A CN201110194372 A CN 201110194372A CN 102283152 A CN102283152 A CN 102283152A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Abstract
The invention relates to a method for breeding fry of scaphesthes macrolepis, which mainly comprises the following steps: transferring fry which have floated up for 2 to 3 days into a culture pond, wherein the fry density is kept between 4,000 to 6,000/m<2>; feeding each day; when the weight of the fry reaches 0.2 gram, feeding in different ponds each day, wherein the feeding density is reduced to 2,000 to 3,000/m<2>; and when the weight of the fry reaches 2 grams, feeding in different ponds every day till the fry mature, wherein the feeding density is reduced to 1,000/m<2>. The method disclosed by the invention has the advantages of high fry survival rate, simple fry breeding technical operation, great simplification of breeding process and easy implementation.
Description
Technical field
The present invention relates to technical field of aquaculture, be specifically related to a kind of many squama shovel jaw fry kind breeding methods.
Background technology
Many squama shovel jaw fishes have another name called many squamas onychostoma simus, are distributed in the middle and upper reaches of Jia Lingjiang River water system and river Han water system, upstream, Huaihe River, Weihe River water system, Yi He, Luo He and tai shan.Be to live in the small-sized economic fish that absolute elevation is a kind of preciousness in 300～1500 meters the mountain stream water small stream, many squamas shovel jaw fishes are fine and tender taste not only, and delicious not raw meat is simultaneously well-known with its nutritious and unique medicinal health value.In recent years owing to many reasons such as weather arid, tourism development, overfishing and water environment artificial pollutions; the living environment of many squama shovel jaw fishes is seriously damaged; the living space is more and more littler; wild quantity is fewer and feweri; Beijing Juma River water system is endangered, at present in Shandong, ground such as Shaanxi, Gansu classify many squamas shovel jaw fishes as provincial watching for animals.Waterman author cultivates many squama shovel jaw fry kinds and has carried out more research in recent years, and the method that adopts a kind of better simply many squama shovel jaw fry kinds to cultivate is about to hatching back seed and directly throws in the seed rearing pond more, and breeding density is 1000 tails/m
2About, the cladocera of always throwing something and feeding during the seed rearing, during do not change water, also do not carry out seed branch pond, this method seed rearing survival rate is 40～50%, and survival rate is not high, and exist breed efficient not high, can not form shortcomings such as batch process, be difficult to adapt to the demand of extensive seed rearing.
Summary of the invention
Problems such as the breed inefficiency, the weed survival rate that have now in many squamas shovel jaw fry kind cultivating processes are low in order to overcome, seed rearing technology complex operation, a step popularization the invention provides a kind of many squama shovel jaw fry kind breeding methods.
Many squama shovel jaw fry kind breeding methods of the present invention mainly comprise the steps:
(1) seed that will float 2～3 days changes over to and cultivates the pond, and making fry density is 4000～6000 tails/m
2
(2) throw something and feed every day feed 6 times, each 2h at interval, every day feeding volume be fish heavy 10～15%;
(3) after the fry body weight reaches 0.2g, divide the pond to raise, stocking density is kept to 2000～3000 tails/m
2, the feed 4 times of throwing something and feeding every day, each 3h at interval, every day feeding volume be fish heavy 4～6%;
(4) after the fry body weight reaches 2g, divide the pond to raise, stocking density is kept to 1000 tails/m
2Throw something and feed every day feed 2 times, each 8h at interval, every day, feeding volume was 3% of a fry body weight, to the fry maturation.
Wherein, described cultivation pond has independently water inlet and discharge outlet.
In addition, the water temperature in described cultivation pond is that 18～25 ℃, dissolved oxygen are more than or equal to 5mg/l.
In addition, described method also comprises the step of removing contamination: every day soil pick-up and change water once, fry is before 0.2g, quantity of exchanged water is 1/4 of a breeding water body, strengthens quantity of exchanged water to 1/2 thereafter gradually.
In addition, described method also comprises the fish disease prevention and cure step: will cultivate pool water level every 10～15 days and reduce to 15cm, and add the crude salt of dissolving, and behind immersion 10～15min, add clear water to former water level.
In addition, the weight that adds crude salt be when reducing to 15cm the water yield 1～1.5%.
Wherein, cement pit or glass steel tank all can be used as and cultivate the pond.In addition, cultivate the pond and preferably have independently water inlet and delivery port.
In addition, the seed of artificial incubation come-up back is not put into the cultivation pond immediately and is thrown something and fed, and the feed that continues to throw something and feed in incubation tank is put into the cultivation pond again and carried out seed rearing after 2～3 days, and this method helps improving weed survival rate.
Initial fry density remains on 4000～6000 tails/m
2, the breeding density that is lower than this scope is not only wasted cultivating condition, waste feed, causes feed coefficient to increase, and is unfavorable for simultaneously that seed is concentrated to ingest, and can reduce weed survival rate; Breeding density causes anoxic and change of water quality very fast easily when bigger than above-mentioned scope, the seed growth rate slows down, and survival rate descends.Along with the growth of fry progressively reduces fry density.So that fry has the growing environment of an excellence.
The present invention have environmental protection, easy and simple to handle, with low cost, be easy to advantages such as popularization, and the seed quality better of cultivating, seed rearing survival rate height improves effectively and has solved shortcomings such as lethality height, susceptible disease in traditional type of rearing, has greatly simplified breeding technique.By method of the present invention, the cultivating survival rate of many squamas shovel jaw fry kinds all can reach more than 80%, the seed rearing survival rate far above traditional 50%.
Embodiment
Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
Embodiment 1
Select long 2m, wide 2.5m, the cement pit of high 0.8m is cultivated the pond and is had independently water inlet and discharge outlet as cultivating the pond.Before putting in a suitable place to breed, seed soaks the 20min sterilization with the 50ppm bleaching powder, and clean after soaking with flushing with clean water, and add the dark clear water of 0.5m, and the control temperature is 21～23 ℃, dissolved oxygen is 8mg/l.
In cultivating the pond, put into many squama shovel jaw fish fries that fed at incubation tank 2 days 25000 tails come-up back.
Since first day, every morning, 7 beginnings were thrown something and fed 1 time every two hours, and the feed 5g that at every turn throws something and feeds throws something and feeds 6 every day.
To the 23rd day, the general body weight of fry reached 0.2g approximately, divides the pond with fry, and breeding density is 2000 tails/m
2, continue to feed, change into and throw something and feed 4 every day, each 3h at interval throws in feed 30g at every turn.
To the 45th day, the general body weight of fry reached 2g approximately, divides the pond with fry once more, and breeding density is 1000 tails/m
2, continue to feed, change into and throw something and feed 2 every day, each 8h at interval throws in feed 150g at every turn.
Early morning every day is with the full pond of plastic tube soil pick-up 1 time, removes residual feed and ight soil at the bottom of the pond; Change water every day 1 time, for the first time quantity of exchanged water is 13cm every day before the branch pond, and quantity of exchanged water is 25cm every day before the second time branch pond;
Every 15 days, water level is reduced to 15cm, add the saline sook 15min of dissolving 11kg crude salt, soak the back and add clear water to former water level.
To about the 60th day, fry generally nearly weighs 3g, survives about 22000 altogether, and survival rate reaches 88%.
Embodiment 2
The circular glass steel tank of selecting diameter 1m, groove depth 0.8m is cultivated the pond and is had independently water inlet and discharge outlet as cultivating the pond.Before putting in a suitable place to breed, seed soaks the 20min sterilization with 20ppm potassium permanganate, and clean after soaking with flushing with clean water, and add the dark clear water of 0.5m, and the control temperature is 23 ℃, dissolved oxygen is 5mg/l.
In cultivating the pond, put into many squama shovel jaw fish fries that fed at incubation tank 2 days 4000 tails come-up back.
Since first day, every morning, 6 beginnings were thrown something and fed 1 time every two hours, and the feed 0.8g that at every turn throws something and feeds throws something and feeds 6 every day.
To the 25th day, the general body weight of fry reached 0.2g approximately, fry is equally divided into two cultivation ponds same as described above continues to feed, and changed into and threw something and fed 4 every day, and each 3h at interval throws in feed 6g at every turn.
To the 47th day, the general body weight of fry reached 2g approximately, fry is equally divided into two cultivation ponds same as described above continues to feed, and changed into and threw something and fed 2 every day, and each 8h at interval throws in feed 30g at every turn.
Wherein, be the plastic flexible pipe full pond soil pick-up 1 time of 1.5cm with diameter early morning every day, removes residual feed and ight soil at the bottom of the pond; Change water 1 time, early stage, quantity of exchanged water was 1/4 of a breeding water body, and the fry body weight strengthens quantity of exchanged water to 1/2 after reaching 0.2g gradually, prevents that seed rearing pond water quality from degenerating;
And, every 10～15 days, water level is reduced to 15cm, add the saline sook 10min～15min of dissolving 8kg crude salt.Soak the back and add clear water to former water level.
To the 65th day, fry generally nearly weighed 3g, survived about 3500 altogether, and survival rate reaches more than 85%.
Embodiment 3
Select the long 2m of diameter, the glass steel tank of high 0.8m is cultivated the pond and is had independently water inlet and discharge outlet as cultivating the pond.Before putting in a suitable place to breed, seed soaks the 20min sterilization with the 40ppm bleaching powder, and clean after soaking with flushing with clean water, and add the dark clear water of 0.4m, and the control temperature is 21-23 ℃, dissolved oxygen is 8mg/l.
In cultivating the pond, put into many squama shovel jaw fish fries that fed at incubation tank 2 days 18000 tails come-up back.
Since first day, every morning, 7 beginnings were thrown something and fed 1 time every two hours, and the feed 5g that at every turn throws something and feeds throws something and feeds 6 every day.
To the 25th day, the fry average weight reached 0.2g approximately, divides the pond with fry, and it is 6000 tails that quantity is put in every pond in a suitable place to breed, changed into and threw something and fed 4 every day, and each 3h at interval throws in feed 18g at every turn.
To the 46th day, the general body weight of fry reached 2g approximately, divides the pond with fry once more, and it is 3000 tails that quantity is put in every pond in a suitable place to breed, continued to feed, and changed into and threw something and fed 2 every day, and each 8h at interval throws in feed 90g at every turn.
Early morning every day is with the full pond of plastic tube soil pick-up 1 time, removes residual feed and ight soil at the bottom of the pond, and gently brushes pool wall with brush; Change water every day 1 time, for the first time quantity of exchanged water is 10cm every day before the branch pond, and quantity of exchanged water is 20cm every day before the second time branch pond;
Every first quarter moon is reduced to 15cm with water level, adds the saline sook 20min of dissolving 4.5kg crude salt, soaks the back and adds clear water to former water level.
To about the 60th day, fry generally nearly weighs 3g, survives about 15500 altogether, and survival rate reaches 86%.
Claims (6)
1. the shovel of squama more than kind jaw fry kind breeding method is characterized in that, mainly comprises the steps:
(1) seed that will float 2～3 days changes over to and cultivates the pond, and making fry density is 4000～6000 tails/m
2
(2) throw something and feed every day feed 6 times, each 2h at interval, every day feeding volume be fish heavy 10～15%;
(3) after the fry body weight reaches 0.2g, divide the pond to raise, stocking density is kept to 2000～3000 tails/m
2, the feed 4 times of throwing something and feeding every day, each 3h at interval, every day feeding volume be fish heavy 4～6%;
(4) after the fry body weight reaches 2g, divide the pond to raise, stocking density is kept to 1000 tails/m
2, the feed 2 times of throwing something and feeding every day, each 8h at interval, every day, feeding volume was 3% of a fry body weight, to the fry maturation.
2. method according to claim 1 is characterized in that, described cultivation pond has independently water inlet and discharge outlet.
3. method according to claim 1 and 2 is characterized in that, the water temperature in described cultivation pond is that 18～25 ℃, dissolved oxygen are more than or equal to 5mg/l.
4. according to any described method of claim 1～3, it is characterized in that described method also comprises the step of removing contamination: every day soil pick-up and change water once, fry is before 0.2g, quantity of exchanged water is 1/4 of a breeding water body, strengthens quantity of exchanged water to 1/2 thereafter gradually.
5. according to any described method of claim 1～4, it is characterized in that described method also comprises the fish disease prevention and cure step: will cultivate pool water level every 10～15 days and reduce to 15cm, and add the crude salt of dissolving, and behind immersion 10～15min, add clear water to former water level.
6. method according to claim 5 is characterized in that, add crude salt weight be when reducing to 15cm the water yield 1～1.5%.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105613385A (en) * | 2016-03-04 | 2016-06-01 | 镇坪县天源生态养殖有限公司 | Varicorhinus macrolepis fry rearing method |
| CN105766709A (en) * | 2016-03-04 | 2016-07-20 | 镇坪县天源生态养殖有限公司 | Adult fish breeding method of varicorhinus macrolepis |
| CN107223612A (en) * | 2017-07-21 | 2017-10-03 | 镇江金山湖农业发展有限公司 | A kind of big squama Barb seed industrial culture methods |
| CN107396861A (en) * | 2017-08-18 | 2017-11-28 | 西南大学 | A kind of method of the more squama shovel jaw fish artificial induced spawnings in southwest |
| CN109566483A (en) * | 2017-09-29 | 2019-04-05 | 镇江金山湖农业发展有限公司 | A kind of big squama Barb larval rearing method |
| CN110367154A (en) * | 2019-09-02 | 2019-10-25 | 吉林省水产科学研究院 | Variegated sculpins juvenile fish breeding method |
| CN110367153A (en) * | 2019-09-02 | 2019-10-25 | 吉林省水产科学研究院 | Variegated sculpins postlarva breeding method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105613385A (en) * | 2016-03-04 | 2016-06-01 | 镇坪县天源生态养殖有限公司 | Varicorhinus macrolepis fry rearing method |
| CN105766709A (en) * | 2016-03-04 | 2016-07-20 | 镇坪县天源生态养殖有限公司 | Adult fish breeding method of varicorhinus macrolepis |
| CN105613385B (en) * | 2016-03-04 | 2018-10-12 | 镇坪县天源生态养殖有限公司 | A kind of seedling culture method of more squama shovel jaw fishes |
| CN105766709B (en) * | 2016-03-04 | 2018-11-02 | 镇坪县天源生态养殖有限公司 | A kind of adult fish rearing method of more squama shovel jaw fishes |
| CN107223612A (en) * | 2017-07-21 | 2017-10-03 | 镇江金山湖农业发展有限公司 | A kind of big squama Barb seed industrial culture methods |
| CN107396861A (en) * | 2017-08-18 | 2017-11-28 | 西南大学 | A kind of method of the more squama shovel jaw fish artificial induced spawnings in southwest |
| CN109566483A (en) * | 2017-09-29 | 2019-04-05 | 镇江金山湖农业发展有限公司 | A kind of big squama Barb larval rearing method |
| CN110367154A (en) * | 2019-09-02 | 2019-10-25 | 吉林省水产科学研究院 | Variegated sculpins juvenile fish breeding method |
| CN110367153A (en) * | 2019-09-02 | 2019-10-25 | 吉林省水产科学研究院 | Variegated sculpins postlarva breeding method |
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