CN103548736A - Method for domesticating and cultivating Huso dauricus fry - Google Patents
Method for domesticating and cultivating Huso dauricus fry Download PDFInfo
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Abstract
The invention provides a method for domesticating and cultivating Huso dauricus fry, aiming at solving the technical problems of a traditional sturgeon type fry cultivation mode, including low survival rate of Huso dauricus and difficulty in popularizing. The method comprises the steps of temporarily cultivating Huso dauricus larva fish 8-9 days at the temperature of 12-13 DEG C, cultivating the Huso dauricus larva fish 5-6 days at the water temperature of 13-14 DEG C by firstly feeding live baits of broken tubificidae, then implementing domestication and feeding with different feeds at different stages, and simultaneously controlling cultivation density and other environment factors till the fry weigh to 4.5-5g and are long to 9-10cm, which represents the completion of domesticating and cultivating the Huso dauricus fry. By the adoption of the method for domesticating and cultivating the Huso dauricus fry, the cultivated fry are good in quality and survive at the rate of up to 60%-65%, increased by 4-5 times in comparison with that fed by a conventional method; therefore, the foundation is laid for the large scale farming of Huso dauricus; meanwhile, reference and experience are provided for the artificial domestication of fish in other types; the popularization is easy; in addition, the method for domesticating and cultivating the Huso dauricus fry is applied to the field of aquatic product farming.
Description
Technical field
The present invention relates to fish seed acclimatization culture method.
Background technology
Da Shi huso sturgeon (Huso dauricus) belongs to Gadiformes, Acipenseridae, and huso sturgeon belongs to.Da Shi huso sturgeon is Heilungkiang special product, one of only 2 kinds of sturgeons in the world, is also fish maximum in fresh water.Sturgeon sexual maturity is late, under nature, needs 16-20 age, and the generation cycle is long, once resource is destroyed, is difficult to recover.Sturgeon is also one of freshwater fish that economic worth is the highest in the world, and its caviar is one of the most expensive in the world food.Due to factors such as environmental pollution, overfishings, at present, the Da Shi huso sturgeon natural resources in Heilungkiang sharply declines, and the own not enough 10t of Heilongjiang Province's fishery output in 2005 is almost nil at present.In order to protect endangered Da Shi huso sturgeon natural resources, meet to greatest extent people's needs growing to famous-brand and high-quality aquatic products simultaneously, artificial propagation and the cultivation of carrying out Da Shi huso sturgeon are imperative.In Gadiformes fish family, Da Shi huso sturgeon belongs to typical violent predacious fish, and Da Shi huso sturgeon mouth is the next, is the large-scale fish that dwell at the end, at natural world, mainly take benthic fishes as food, and very strong to the dependence of biological feed (live bait), and it is very big that artificial feed are raised and train difficulty.In addition, Da Shi huso sturgeon has its unique biological property (suitable low temperature, fast growth, poor and the resistance of seed ingestion ability is weak etc.), with other sturgeons, there is larger difference, China raised and train wild sturgeon juvenile fish since 2000, the traditional sturgeon seed cultivate mode of main employing, under this pattern, Da Shi huso sturgeon for many years raise and train survival rate all in 10% left and right, therefore, the cultured population of sturgeon is always very little, this has just determined that Da Shi huso sturgeon propagates the special technology that needs artificially, the seed acclimatization culture technology of other Acipenseridae fish is also not exclusively applicable to Da Shi huso sturgeon.It is low that Da Shi huso sturgeon seed is raised and train survival rate, limited further developing of large-scale cultivation.At present, the domestic concrete operations technology that also there is no the Da Shi huso sturgeon seed acclimatization culture of mature and feasible.
Summary of the invention
The present invention will solve low, the difficult technical problem of promoting of traditional sturgeons seed rearing mode Xia Dashi huso sturgeon survival rate, thereby the acclimatization culture method of a kind of Da Shi huso sturgeon seed is provided.
The acclimatization culture method of a kind of Da Shi huso sturgeon seed of the present invention is to carry out according to the following steps:
One, by the density of each circular glass steel tank 7000～8000 tail prelarva, Da Shi huso sturgeon prelarva is put into the circular glass steel tank through sterilization, the diameter of circular glass steel tank is 2～3m, and height is 40～50cm, keeps the depth of water 30～35cm, before prelarva opening, in temperature, be at 12～13 ℃, to support temporarily 8～9d;
Two, prelarva is supported after date through temporarily, in water temperature, be with broken water earthworm live bait opening, to cultivate after 5～6d at 13～14 ℃, in water temperature, it is 14～15 ℃, intensity of illumination is 10～100Lux, light application time is to throw something and feed in 6～12 hours/world, throw something and feed every day 7～8 times, feeding volume is as the criterion to be satiated with food and slightly to remain bait, removes dead seedling and residual thing in cultivating process;
Three, treat the long 2.0～3.0cm of fry body, body weight reaches after 0.2～0.3g, and the manufactured feed of diameter≤0.5mm is admixed in live bait and thrown something and fed, and induction prelarva ingests, and throws something and feeds every day 7～8 times;
Four, prelarva is after food calling 2～3d, and acclimatization culture is carried out in bait A7～8 time of throwing something and feeding every day, and every day, feeding volume was 7%～8% of fry body weight; Wherein, described bait A is 20～30 by live bait and manufactured feed in mass ratio: 1 is mixed to get;
Five, treat that fry body weight reaches 0.5～1.0g, when body length is 4～5cm, adjusting fry density is each circular glass steel tank 5000～6000 tail, throw something and feed in bait B and bait C interval, throw something and feed every day number of times 7～8 times, feeding volume is 5%～6% of fry body weight, reduces gradually the bait B number of times of throwing something and feeding, increase the bait C number of times of throwing something and feeding, bait C all throws something and feeds after 15～16d; Wherein, described bait B is 10～15 by live bait and manufactured feed in mass ratio: 1 is mixed to get; Described bait C admixes half broken earthworm airing by manufactured feed and makes;
Six, treat that fry body weight reaches 1.0～1.5g, when body length is 6～7cm, adjusting fry density is each circular glass steel tank 2500～3000 tail, in temperature, be at 15～16 ℃, bait C and manufactured feed are are alternately thrown something and fed, throw something and feed every day number of times 7～8 times, feeding volume is 5%～6% of fry body weight, reduce gradually the bait C number of times of throwing something and feeding, increase the manufactured feed number of times of throwing something and feeding, the manufactured feed of throwing something and feeding completely after 9～10d, cultivates to the body weight of seed and reaches 4.5～5g, long 9～the 10cm of body, completes the acclimatization culture of Da Shi huso sturgeon seed;
Wherein, described manufactured feed is bought and is unified feed corporation,Ltd from middle mountain.
The present invention includes following beneficial effect:
1, the present invention adjusts each circular glass steel tank fry rearing density in time, is conducive to the control of bacterial gill, reduces prelarva and stings the mutual residual probability of tail, improves the domestication survival rate of fry;
2, the Da Shi huso sturgeon seed size of the present invention's cultivation is neat, physique good; seed domestication survival rate can reach 60%～65%, improves 4～5 times, for the large-scale cultivation of Da Shi huso sturgeon is laid a good foundation compared with conventional method; while also provides reference and experience for the domestication of other fish, is easy to promote.
Embodiment
Embodiment one: present embodiment the acclimatization culture method of a kind of Da Shi huso sturgeon seed be to carry out according to the following steps:
One, by the density of each circular glass steel tank 7000～8000 tail prelarva, Da Shi huso sturgeon prelarva is put into the circular glass steel tank through sterilization, the diameter of circular glass steel tank is 2～3m, and height is 40～50cm, keeps the depth of water 30～35cm, before prelarva opening, in temperature, be at 12～13 ℃, to support temporarily 8～9d;
Two, prelarva is supported after date through temporarily, in water temperature, be with broken water earthworm live bait opening, to cultivate after 5～6d at 13～14 ℃, in water temperature, it is 14～15 ℃, intensity of illumination is 10～100Lux, light application time is to throw something and feed in 6～12 hours/world, throw something and feed every day 7～8 times, feeding volume is as the criterion to be satiated with food and slightly to remain bait, removes dead seedling and residual thing in cultivating process;
Three, treat the long 2.0～3.0cm of fry body, body weight reaches after 0.2～0.3g, and the manufactured feed of diameter≤0.5mm is admixed in live bait and thrown something and fed, and induction prelarva ingests, and throws something and feeds every day 7～8 times;
Four, prelarva is after food calling 2～3d, and acclimatization culture is carried out in bait A7～8 time of throwing something and feeding every day, and every day, feeding volume was 7%～8% of fry body weight; Wherein, described bait A is 20～30 by live bait and manufactured feed in mass ratio: 1 is mixed to get;
Five, treat that fry body weight reaches 0.5～1.0g, when body length is 4～5cm, adjusting fry density is each circular glass steel tank 5000～6000 tail, throw something and feed in bait B and bait C interval, throw something and feed every day number of times 7～8 times, feeding volume is 5%～6% of fry body weight, reduces gradually the bait B number of times of throwing something and feeding, increase the bait C number of times of throwing something and feeding, bait C all throws something and feeds after 15～16d; Wherein, described bait B is 10～15 by live bait and manufactured feed in mass ratio: 1 is mixed to get; Described bait C admixes half broken earthworm airing by manufactured feed and makes;
Six, treat that fry body weight reaches 1.0～1.5g, when body length is 6～7cm, adjusting fry density is each circular glass steel tank 2500～3000 tail, in temperature, be at 15～16 ℃, bait C and manufactured feed are are alternately thrown something and fed, throw something and feed every day number of times 7～8 times, feeding volume is 5%～6% of fry body weight, reduce gradually the bait C number of times of throwing something and feeding, increase the manufactured feed number of times of throwing something and feeding, the manufactured feed of throwing something and feeding completely after 9～10d, cultivates to the body weight of seed and reaches 4.5～5g, long 9～the 10cm of body, completes the acclimatization culture of Da Shi huso sturgeon seed;
Wherein, described manufactured feed is bought and is unified feed corporation,Ltd from middle mountain.
Present embodiment comprises following beneficial effect:
1, present embodiment is adjusted each circular glass steel tank fry rearing density in time, is conducive to the control of bacterial gill, reduces prelarva and stings the mutual residual probability of tail, improves the domestication survival rate of fry;
2, the Da Shi huso sturgeon seed size of present embodiment cultivation is neat, physique good; seed domestication survival rate can reach 60%～65%; compared with conventional method, improve 4～5 times; for the large-scale cultivation of Da Shi huso sturgeon is laid a good foundation; while also provides reference and experience for the domestication of other fish, is easy to promote.
Embodiment two: present embodiment mode is different from embodiment one: in step 1, circular glass steel tank is sterilized by povidone iodine.Other is identical with embodiment one.
Embodiment three: present embodiment is different from embodiment one or two: in step 1, the diameter of circular glass steel tank is 2m, height is 40cm.Other is identical with embodiment one or two.
Embodiment four: present embodiment is different from one of embodiment one to three: be to support temporarily 8d at 12 ℃ in temperature in step 1.Other is identical with one of embodiment one to three.
Embodiment five: present embodiment is different from one of embodiment one to four: be to cultivate 6d with broken water earthworm live bait opening at 14 ℃ in water temperature in step 2.Other is identical with one of embodiment one to four.
Embodiment six: present embodiment is different from one of embodiment one to five: in step 2, intensity of illumination is 100Lux, and light application time is 12 hours/day.Other is identical with one of embodiment one to five.
Embodiment seven: present embodiment is different from one of embodiment one to six: in step 4 bait A by live bait and manufactured feed in mass ratio for 20:1 is mixed to get.Other is identical with one of embodiment one to six.
Embodiment eight: present embodiment is different from one of embodiment one to seven: in step 5 bait B by live bait and manufactured feed in mass ratio for 15:1 is mixed to get.Other is identical with one of embodiment one to seven.
By following verification experimental verification beneficial effect of the present invention:
Test one: the acclimatization culture method of a kind of Da Shi huso sturgeon seed of this test is to realize according to the following steps:
One, by the density of each circular glass steel tank 8000 tail prelarva, Da Shi huso sturgeon prelarva is put into the circular glass steel tank through sterilization, the diameter of circular glass steel tank is 2m, and height is 40cm, keeps depth of water 30cm, before prelarva opening, in temperature, is at 12 ℃, to support temporarily 8d;
Two, prelarva is supported after date through temporarily, in water temperature, be with broken water earthworm live bait opening, to cultivate 6d at 14 ℃, then water temperature is adjusted to 15 ℃, in cultivating process, remove dead seedling and residual thing, after prelarva opening is cultivated, intensity of illumination is 100Lux, and light application time is 12 hours/day, throw something and feed every day 8 times, feeding volume is as the criterion to be satiated with food and slightly to remain bait;
Three, prelarva opening is cultivated 10d, the long 3.0cm of fry body, and body weight reaches after 0.3g, and the manufactured feed of diameter≤0.5mm is admixed in live bait and thrown something and fed, and induction prelarva ingests, and throws something and feeds every day 8 times;
Four, prelarva is after food calling 2d, bait A8 time of throwing something and feeding every day, and every day, feeding volume was that 8% of fry body weight is carried out acclimatization culture; Wherein, described bait A by live bait and manufactured feed in mass ratio for 20:1 is mixed to get;
Five, treat that fry body weight reaches 1.0g, when body length is 5cm, adjusting fry density is each circular glass steel tank 6000 tail, throw something and feed in bait B and bait C interval, throw something and feed every day each 4 times, feeding volume is 6% of fry body weight, within every 4 days, reduces the number of times of throwing something and feeding of 1 bait B, the number of times of throwing something and feeding that increases by 1 bait C, bait C all throws something and feeds after 15d; Wherein, described bait B by live bait and manufactured feed in mass ratio for 15:1 is mixed to get; Described bait C admixes half broken earthworm airing by manufactured feed and makes;
Six, treat that fry body weight reaches 1.5g, when body length is 7cm, adjusting fry density is each circular glass steel tank 3000 tail, in temperature, be at 16 ℃, bait B and manufactured feed are are alternately thrown something and fed, throw something and feed every day 3 bait B and 4 manufactured feeds, and feeding volume is 5% of fry body weight, within every 3 days, reduce the number of times of throwing something and feeding of 1 bait C, increase the number of times of throwing something and feeding of 1 manufactured feed, the manufactured feed of throwing something and feeding completely after 9d, cultivates to the body weight of seed and reaches 5g, the long 10cm of body, completes the acclimatization culture of Da Shi huso sturgeon seed;
Wherein, described manufactured feed is bought and is unified feed corporation,Ltd from middle mountain.
Each circular glass steel tank fry rearing density is adjusted in this test in time, is conducive to the control of bacterial gill, reduces prelarva and stings the mutual residual probability of tail, improves the domestication survival rate of fry;
Da Shi huso sturgeon seed size that this test is cultivated is neat, physique good; seed domestication survival rate can reach 60%～65%, improves 4～5 times, for the large-scale cultivation of Da Shi huso sturgeon is laid a good foundation compared with conventional method; while also provides reference and experience for the domestication of other fish, is easy to promote.
Claims (8)
1. an acclimatization culture method for Da Shi huso sturgeon seed, the acclimatization culture method that it is characterized in that Da Shi huso sturgeon seed is to carry out according to the following steps:
One, by the density of each circular glass steel tank 7000～8000 tail prelarva, Da Shi huso sturgeon prelarva is put into the circular glass steel tank through sterilization, the diameter of circular glass steel tank is 2～3m, and height is 40～50cm, keeps the depth of water 30～35cm, before prelarva opening, in temperature, be at 12～13 ℃, to support temporarily 8～9d;
Two, prelarva is supported after date through temporarily, in water temperature, be with broken water earthworm live bait opening, to cultivate after 5～6d at 13～14 ℃, in water temperature, it is 14～15 ℃, intensity of illumination is 10～100Lux, light application time is to throw something and feed in 6～12 hours/world, throw something and feed every day 7～8 times, feeding volume is as the criterion to be satiated with food and slightly to remain bait, removes dead seedling and residual thing in cultivating process;
Three, treat the long 2.0～3.0cm of fry body, body weight reaches after 0.2～0.3g, and the manufactured feed of diameter≤0.5mm is admixed in live bait and thrown something and fed, and induction prelarva ingests, and throws something and feeds every day 7～8 times;
Four, prelarva is after food calling 2～3d, and acclimatization culture is carried out in bait A7～8 time of throwing something and feeding every day, and every day, feeding volume was 7%～8% of fry body weight; Wherein, described bait A is 20～30 by live bait and manufactured feed in mass ratio: 1 is mixed to get;
Five, treat that fry body weight reaches 0.5～1.0g, when body length is 4～5cm, adjusting fry density is each circular glass steel tank 5000～6000 tail, throw something and feed in bait B and bait C interval, throw something and feed every day number of times 7～8 times, feeding volume is 5%～6% of fry body weight, reduces gradually the bait B number of times of throwing something and feeding, increase the bait C number of times of throwing something and feeding, bait C all throws something and feeds after 15～16d; Wherein, described bait B is 10～15 by live bait and manufactured feed in mass ratio: 1 is mixed to get; Described bait C admixes half broken earthworm airing by manufactured feed and makes;
Six, treat that fry body weight reaches 1.0～1.5g, when body length is 6～7cm, adjusting fry density is each circular glass steel tank 2500～3000 tail, in temperature, be at 15～16 ℃, bait C and manufactured feed are are alternately thrown something and fed, throw something and feed every day number of times 7～8 times, feeding volume is 5%～6% of fry body weight, reduce gradually the bait C number of times of throwing something and feeding, increase the manufactured feed number of times of throwing something and feeding, the manufactured feed of throwing something and feeding completely after 9～10d, cultivates to the body weight of seed and reaches 4.5～5g, long 9～the 10cm of body, completes the acclimatization culture of Da Shi huso sturgeon seed;
Wherein, described manufactured feed is bought and is unified feed corporation,Ltd from middle mountain.
2. the acclimatization culture method of a kind of Da Shi huso sturgeon seed according to claim 1, is characterized in that in step 1, circular glass steel tank is sterilized by povidone iodine.
3. the acclimatization culture method of a kind of Da Shi huso sturgeon seed according to claim 1, the diameter that it is characterized in that circular glass steel tank in step 1 is 2m, height is 40cm.
4. the acclimatization culture method of a kind of Da Shi huso sturgeon seed according to claim 1, is characterized in that in step 1 being at 12 ℃, to support temporarily 8d in temperature.
5. the acclimatization culture method of a kind of Da Shi huso sturgeon seed according to claim 1, is characterized in that in step 2 being with broken water earthworm live bait opening, to cultivate 6d at 14 ℃ in water temperature.
6. the acclimatization culture method of a kind of Da Shi huso sturgeon seed according to claim 1, is characterized in that in step 2, intensity of illumination is 100Lux, and light application time is 12 hours/day.
7. the acclimatization culture method of a kind of Da Shi huso sturgeon seed according to claim 1, it is characterized in that in step 4 bait A by live bait and manufactured feed in mass ratio for 20:1 is mixed to get.
8. the acclimatization culture method of a kind of Da Shi huso sturgeon seed according to claim 1, it is characterized in that in step 5 bait B by live bait and manufactured feed in mass ratio for 15:1 is mixed to get.
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| CN103947586A (en) * | 2014-04-15 | 2014-07-30 | 新疆维吾尔自治区水产科学研究所 | Method for domesticating zander fry by using artificial compound feeds |
| CN106172124A (en) * | 2016-07-15 | 2016-12-07 | 杭州千岛湖鲟龙科技股份有限公司 | A kind of artificial breeding method of Europe, southern area huso sturgeon |
| CN107173277A (en) * | 2017-07-07 | 2017-09-19 | 黔东南苗族侗族自治州农业科学院 | The acclimation method and cultural method of a kind of sturgeon |
| CN107318714A (en) * | 2017-08-04 | 2017-11-07 | 安徽省泾县丰瑞水产科技有限公司 | A kind of sturgeon seed domestication turns food method |
| CN113412801A (en) * | 2021-07-30 | 2021-09-21 | 中国水产科学研究院黑龙江水产研究所 | Simple method for rapidly domesticating zander |
| CN113508766A (en) * | 2021-08-04 | 2021-10-19 | 华中农业大学 | Method for domesticating and feeding largemouth bass fry |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107173277A (en) * | 2017-07-07 | 2017-09-19 | 黔东南苗族侗族自治州农业科学院 | The acclimation method and cultural method of a kind of sturgeon |
| CN107318714A (en) * | 2017-08-04 | 2017-11-07 | 安徽省泾县丰瑞水产科技有限公司 | A kind of sturgeon seed domestication turns food method |
| CN113412801A (en) * | 2021-07-30 | 2021-09-21 | 中国水产科学研究院黑龙江水产研究所 | Simple method for rapidly domesticating zander |
| CN113508766A (en) * | 2021-08-04 | 2021-10-19 | 华中农业大学 | Method for domesticating and feeding largemouth bass fry |
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