CN103416334A - Method for improving uniformity of sizes of juvenile crabs - Google Patents

Method for improving uniformity of sizes of juvenile crabs Download PDF

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Publication number
CN103416334A
CN103416334A CN2013103363036A CN201310336303A CN103416334A CN 103416334 A CN103416334 A CN 103416334A CN 2013103363036 A CN2013103363036 A CN 2013103363036A CN 201310336303 A CN201310336303 A CN 201310336303A CN 103416334 A CN103416334 A CN 103416334A
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China
Prior art keywords
water
crab
breed
place
area
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CN2013103363036A
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Chinese (zh)
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CN103416334B (en
Inventor
李跃华
丁淑燕
邓燕飞
朱清顺
柏如发
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Freshwater Fisheries Research Institute of Jiangsu Province
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Freshwater Fisheries Research Institute of Jiangsu Province
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Priority to CN201310336303.6A priority Critical patent/CN103416334B/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish

Abstract

Provided is a method for improving uniformity of sizes of juvenile crabs. The method is characterized by including the following steps: firstly, proper quantities of megalopae are selected according to the breeding water surface area; secondly, partitions are arranged in a breeding water surface, so that a small pool with an area not larger than 20% of the breeding water surface area is formed in a separated mode, the selected megalopae are placed in the small pool, uniformity of water in the small pool and water of the breeding water surface is kept, water in the small pool is communicated with the water of the breeding water surface and accordingly more than 80% of the megalopae in the small pool grow synchronously; thirdly, normal feeding is carried out until the megalopae grow to be V-stage juvenile crabs, the partitions are removed so that the V-stage juvenile crabs can enter the whole breeding water surface, and the V-stage juvenile crabs are cultivated to grow to be crabs in a common crab cultivation method. The method is simple, the sizes of the crabs are uniform, and the yield is high.

Description

Improve the method for young crab neat specification degree
Technical field
The present invention relates to a kind of aquaculture method, especially a kind of Growth method, specifically a kind of method that improves young crab neat specification degree.
Background technology
As everyone knows, the synchronous growth of Growth during Young crab is the key that improves crab kind output and specification, and be the critical period of Growth from the process that megalops larva grows to V phase children crab, in this process, growing of juvenile crab is subject to feed and genetic impact, there will be the growth speed to differ, the metamorphosis process is asynchronous, there will be seedlings to eat seedling, internecine phenomenon, affect survival rate.
At present; children crab breeding method has two kinds; a kind of is juvenile crab (megalops larva) directly to be put into to the Growth pond directly carry out Growth; because water surface area is large; feeding disperses, and can cause many juvenile crabs can not normally obtain food and impact is grown, when juvenile crab grows to V phase children crab; the neat specification degree generally is no more than 30%, has a strong impact on output and the specification of the follow-up cultivation of crab kind.Another kind method is to adopt cement pit to cultivate V phase children crab, although this method can suitably improve the regularity of V phase children crab specification, but reach 50% left and right, but because the water body of cement pit has larger difference with the Growth pond water body of implementing to put in a suitable place to breed, therefore, when the V phase children crab that cement pit is cultivated is put into water surface for aquaculture and cultivated, very easily cause juvenile crab to be not suitable with water body and sick, lethality is high, affect the raising of output, simultaneously, the difficulty of operation is larger, and the lethality that operation causes is higher.To this, the solution there is no at present.
Summary of the invention
The objective of the invention is that neat specification degree for V phase children crab in present Growth process is not high, survival rate is low, the problem of easy formation a large amount of " lazy crab ", invent a kind of method of utilizing the raising children crab neat specification degree that former pond ecological cultivates.
Technical scheme of the present invention is:
A kind of method that improves young crab neat specification degree is characterized in that it comprises the following steps:
At first, according to the megalops larva quantity of putting water surface area selection suitable quantity in a suitable place to breed;
Secondly, barrier is set in putting the water surface in a suitable place to breed, being separated out an area with 20 mesh sieve tulles accounts for and puts water surface area in a suitable place to breed and be no more than 20% Xiao Chi, the megalops larva of selected quantity is put into to Xiao Chi, keep Xiao Chi water body and the uniformity of putting water surface water body in a suitable place to breed, make water and the circulation of putting water surface water body in a suitable place to breed in Xiao Chi; So that the megalops larva in Xiao Chi keeps synchronous growth to grow;
The 3rd, the nursing that feeds intake normally, until megalops larva grows to V phase children crab, remove barrier, makes V phase children crab enter the whole water surface of putting in a suitable place to breed, by conventional method, cultivates to the crab kind.
Also be provided with four in described Xiao Chi and grow to I phase children crab, II phase children crab, III phase children crab, IV phase children crab and four transition barriers of removing during V phase children crab the young crab of large eye respectively, the young crab of large eye is no more than whole 10% of the water surface area of putting in a suitable place to breed to the area of putting in a suitable place to breed in I phase children crab developmental process, and IV phase children crab to the area of putting in a suitable place to breed in V phase children crab developmental process is no more than whole 20% of the water surface area of putting in a suitable place to breed.
Be equipped with and prevent that juvenile crab from passing the bolting silk net burrowed around described Xiao Chi or on the pool wall in whole pond.
Beneficial effect of the present invention:
The present invention is by controlling young crab feed zone, guarantee the balanced feed of young crab energy, synchronous growth, carry out reasonable disposition by affecting the synchronous key factor of growing of juvenile crab, can make the neat specification degree of V phase children crab reach more than 80%, far away higher than the regularity of other breeding method.
The present invention adopts the young crab that former pond ecological cultivates because grow in the Growth pond always, more easily adapts to this pond condition after withdrawing barrier, can improve the survival rate of juvenile crab to the crab kind.
The inventive method is simple, is easy to realize, the cost increased is limited.
The accompanying drawing explanation
Fig. 1 is that the water surface of the present invention is separated schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As shown in Figure 1.
A kind of method that improves young crab neat specification degree, it comprises the following steps:
At first, according to putting water surface area in a suitable place to breed, according to the conventional breeding density of every mu of 1.0-1.5 kilogram, put megalops larva in a suitable place to breed;
Secondly, barrier 2 is set in putting the water surface 1 in a suitable place to breed, being separated out an area with 20 mesh sieve tulles accounts for and puts water surface area in a suitable place to breed and be no more than 20% the Xiao Chi cultivation for the children crab from megalops larva to the V phase, the megalops larva of selected quantity is put into to Xiao Chi, keep Xiao Chi water body and the uniformity of putting water surface water body in a suitable place to breed, make water and the circulation of putting water surface water body in a suitable place to breed in Xiao Chi; During concrete enforcement, in order further to improve the regularity of young crab specification, the different times that also can grow according to juvenile crab is suitably adjusted the cultivation area of each phase children crab, adopt altogether five baffles in Fig. 1, respectively correspondingly from megalops larva (juvenile crab) → I phase children crab → II phase children crab → III phase children crab → IV phase children crab → V phase children crab, cultivate area, but the water surface area in the megalops larva process of growth should be controlled at and be not less than 10%, all the other each phases can optionally be controlled voluntarily, can pump corresponding barrier after each issue end, will cultivate the enlarged areas of Xiao Chi.In addition, in order to prevent in cultivating process that young crab burrows, do not take food, form " lazy crab ", impact is grown, and can on the earth pool wall in Xiao Chi tri-limits or whole pond, install additional and prevent that juvenile crab from passing the bolting silk net burrowed;
The 3rd, the nursing that feeds intake normally, until megalops larva grows to V phase children crab, remove barrier, makes V phase children crab enter the whole water surface of putting in a suitable place to breed, by conventional Growth method, cultivates to the crab kind.
By above method, during to V phase children crab, the neat specification degree can reach more than 80%, and survival rate is more than 50%.Effectively crab kind quantity improves more than 30%, and every mu can increase income more than 3000 yuan.
Comparative trial and statistics show, adopt conventional Growth method, and the neat specification degree of V phase children crab is no more than 50%, and survival rate is 30% left and right.
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.

Claims (3)

1. a method that improves young crab neat specification degree is characterized in that it comprises the following steps:
At first, according to the megalops larva of putting water surface area selection suitable quantity in a suitable place to breed;
Secondly, barrier is set in putting the water surface in a suitable place to breed, is separated out an area with Dense mesh screen and accounts for and put water surface area in a suitable place to breed and be no more than 20% Xiao Chi, the megalops larva of selected quantity is put into to Xiao Chi, keep Xiao Chi water body and the uniformity of putting water surface water body in a suitable place to breed, make water and the circulation of putting water surface water body in a suitable place to breed in Xiao Chi; So that in Xiao Chi, the young crab more than 80% keeps synchronous growth;
The 3rd, the nursing that feeds intake normally, until megalops larva grows to V phase children crab, remove barrier, V phase children crab entered and wholely put the water surface in a suitable place to breed, until cultivate into the crab kind.
2. method according to claim 1, it is characterized in that in described Xiao Chi also being provided with four and grow to I phase children crab, II phase children crab, III phase children crab, IV phase children crab and four transition barriers of removing during V phase children crab megalops larva respectively, megalops larva is no more than whole 10% of the water surface area of putting in a suitable place to breed to the area of putting in a suitable place to breed in I phase children crab developmental process, and IV phase children crab to the area of putting in a suitable place to breed in V phase children crab developmental process is no more than whole 20% of the water surface area of putting in a suitable place to breed.
3. method according to claim 1, is characterized in that being equipped with and preventing that juvenile crab from passing the bolting silk net burrowed around described Xiao Chi or on the pool wall in whole pond.
CN201310336303.6A 2013-08-05 2013-08-05 Method for improving uniformity of sizes of juvenile crabs Expired - Fee Related CN103416334B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110999845A (en) * 2019-12-23 2020-04-14 哈尔滨市农业科学院 Breeding method for macrobrachium nipponensis

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1376348A (en) * 1971-02-24 1974-12-04 O Johnsen Method of feeding crabs
JPS5963124A (en) * 1982-10-02 1984-04-10 Yasuyori Keidamoto Breeding of palm crab
RU2174750C2 (en) * 1998-07-27 2001-10-20 Государственное унитарное предприятие Тихоокеанский научно-исследовательский рыбохозяйственный центр Crab reproduction method (versions)
CN1826881A (en) * 2006-04-06 2006-09-06 江苏省淡水水产研究所 Method for breeding river crab
CN101233833A (en) * 2008-02-04 2008-08-06 厦门大学 Blue crab cultivation device and cultivation method thereof
CN102812912A (en) * 2012-08-28 2012-12-12 江苏省淡水水产研究所 Large-scale family juvenile crab soil pool culture method for eriocheir sinensis
CN202760008U (en) * 2012-08-27 2013-03-06 江苏省淡水水产研究所 Soil pond rearing device of Chinese mitten crab large-scale family juvenile crabs
CN202760002U (en) * 2012-09-05 2013-03-06 中国水产科学研究院东海水产研究所 Juvenile scylla paramamosain breeding device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1376348A (en) * 1971-02-24 1974-12-04 O Johnsen Method of feeding crabs
JPS5963124A (en) * 1982-10-02 1984-04-10 Yasuyori Keidamoto Breeding of palm crab
RU2174750C2 (en) * 1998-07-27 2001-10-20 Государственное унитарное предприятие Тихоокеанский научно-исследовательский рыбохозяйственный центр Crab reproduction method (versions)
CN1826881A (en) * 2006-04-06 2006-09-06 江苏省淡水水产研究所 Method for breeding river crab
CN101233833A (en) * 2008-02-04 2008-08-06 厦门大学 Blue crab cultivation device and cultivation method thereof
CN202760008U (en) * 2012-08-27 2013-03-06 江苏省淡水水产研究所 Soil pond rearing device of Chinese mitten crab large-scale family juvenile crabs
CN102812912A (en) * 2012-08-28 2012-12-12 江苏省淡水水产研究所 Large-scale family juvenile crab soil pool culture method for eriocheir sinensis
CN202760002U (en) * 2012-09-05 2013-03-06 中国水产科学研究院东海水产研究所 Juvenile scylla paramamosain breeding device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
朱清顺等: "中华绒螯蟹‘长江一号’生长性能比较研究", 《农学学报》 *
邓燕飞等: "中华绒螯蟹"长江1号"的选育", 《水产养殖》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110999845A (en) * 2019-12-23 2020-04-14 哈尔滨市农业科学院 Breeding method for macrobrachium nipponensis

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