CN102960268A - Method for improving feeding rate of fries of spotted maigre - Google Patents
Method for improving feeding rate of fries of spotted maigre Download PDFInfo
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- CN102960268A CN102960268A CN2011102571850A CN201110257185A CN102960268A CN 102960268 A CN102960268 A CN 102960268A CN 2011102571850 A CN2011102571850 A CN 2011102571850A CN 201110257185 A CN201110257185 A CN 201110257185A CN 102960268 A CN102960268 A CN 102960268A
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Abstract
The invention provides a method for improving feeding rate of fries of spotted maigre. Salinity of a cultivation water body for fries is adjusted in growth days of hatched fries; the growth days of the fries and the salinity of the cultivation water body are as follows: the salinity of the cultivation water body is 23 per mill at2.3% at early hatching of the fries; the salinity of the cultivation water body is 20 per mill2.0% in the morning, and 17 per mill 1.7% in the afternoon at one day old; 14 per mill 1.4% in the morning and 11 per mill 1.1% in the afternoon at two days old; 11 per mill 1.1% at three and four days old; 14 per mill 1.4% in the morning and 17 per mill 1.7% in the afternoon at five days old; 20 per mill 2.0% in the morning at six days old; and the salinity of the cultivation water body recovers to 23 per mill 2.3% at seven days old. For the feeding rate of the fries, except for the palatable baits, more necessarily, the fries have considerable vigor and appetite. Compared with the prior art, a method for firstly reducing the salinity of the cultivation water body, and then rising the normal salinity of the cultivation water body is applied, so that the vigor of the fries is improved, the fries have ability needed in feeding, thus the feeding rate of the fries are obviously improved; and the feeding rate is equal to the number of feeding fries/the number of early hatching fries *%.
Description
Technical field
What the present invention relates to is a kind of method that improves spotted maigre prelarva aperture opening ratio, belongs to the fish culture technical field of the essential middle agricultural of human lives.
Background technology
Spotted maigre (Nibea albiflora) is commonly called as yellow mother-in-law chicken, belongs to Perciformes, Sciaenidae, Nibea is lower water layer fish in the coastal waters, mainly inhabits the more shallow littoral sea of sand mud substrate, take zoobenthos such as small-sized shell-fish and small fish as food, be distributed in the northwest Pacific district, comprise South China Sea, the East Sea and southern Yellow Sea, 8 ℃～33 ℃ of growth comfort zones, suitable salt scope 10 ‰～40 ‰ are the important kinds of coastal area of southeastern China cultivation and propagation.For remedy because of resource shortage cause underproduce, carried out large-scale artificial breeding to the more fishery products of market supply.But in the process of artificial breeding, the problem that the prelarva aperture opening ratio is low is always very serious, and prelarva enters the opening after date, and large quantities of prelarvas are dead because can not in time ingesting, thereby has had a strong impact on the cultured output of spotted maigre.
The factor of opening is not a lot of to cause prelarva, such as contained nutrition of prelarva schistostoma size, agreeable to the taste bait, bait etc.Traditional solution mainly is to set about from prelarva open-mouthed bait aspect, such as Chinese invention patent ZL200810020091.X " a kind of method for cultivating Protosalanx hyalocranius fingerlings " thus introduced the method that the prelarva initial feeding was cultivated and induced in conjunction with throwing something and feeding of artificial feed to a kind of natural bait.But in practical operation, often be limited by to a great extent fresh food, and cultivate multiple fresh food and can increase one's load to seed rearing work, the various fresh food inconvenience spreads of using in this patent simultaneously.
Show that after deliberation the seawater fish prelarva generally can survive in addition in wider salinity range, its body wall structure and component can make it keep very low penetration, thereby keep the component of body fluid, and at Low-salinity bearing fishing gear higher survival rate are arranged.
The spotted maigre prelarva is generally at 3 age in days initial feedings, and therefore, the selection of time of calculating the prelarva aperture opening ratio among the present invention is in 4 age in days evenings.
Summary of the invention
For above-mentioned deficiency, the invention provides a kind of simple and easy to do, a kind of method that improves spotted maigre prelarva aperture opening ratio that the bait requirement is common.
A kind of method that improves spotted maigre prelarva aperture opening ratio provided by the invention to the prelarva bait of throwing something and feeding, selects the initial stage of larvae growth that the salinity of prelarva breeding water body is regulated behind the incubating oosperm simultaneously, and concrete steps are:
(1) newly hatched larvae is that inflation was supported one day temporarily in 23 ‰ the breeding water body in salinity;
(2) 1 age in days prelarvas: the morning and afternoon add respectively fresh water, make the pond salinity water reach respectively 20 ‰ and 17 ‰;
(3) 2 age in days prelarvas: the morning and afternoon add respectively fresh water, make the pond salinity water reach respectively 14 ‰ and 11 ‰;
(4) 3 age in days prelarvas and 4 age in days prelarvas: the pond salinity water maintains 11 ‰;
(5) 5 age in days prelarvas: the morning and afternoon add seawater respectively in breeding water body, make the pond salinity water reach respectively 14 ‰ and 17 ‰;
(6) 6 age in days prelarvas: add seawater the morning in breeding water body, makes pond water body degree reach 20 ‰;
Add seawater every day after (7) the 7 age in days prelarvas in breeding water body, progressively makes the pond salinity water return to 23 ‰.
For the prelarva opening, except agreeable to the taste bait will be arranged, more be necessary that and make prelarva that suitable vigor and the desire of feed be arranged, compared with prior art, the inventive method is used the salinity that reduces first breeding water body, the method that is increased to again normal salinity after the feed of prelarva opening, improves the vigor of prelarva, makes prelarva possess the essential ability of above-mentioned opening, thereby significantly improve the aperture opening ratio of prelarva, aperture opening ratio=(the prelarva number/newly hatched larvae number of ingesting) * %.
A kind of method that improves spotted maigre prelarva aperture opening ratio provided by the invention is outside one's consideration except the salt of regulating as stated above breeding water body and also the bait of throwing something and feeding is controlled, and concrete grammar is:
(1) 1 age in days prelarva: the morning and afternoon, each the adjusting in the backward pond of salinity added chlorella, made its concentration reach 60 * 10
4Individual/mL Chi Shui;
(2) 2 age in days prelarvas: the morning and afternoon, each the adjusting in the water of the backward pond of salinity added the brachionus plicatilis of strengthening through chlorella, made its concentration reach 5～10/mL Chi Shui, and to keep chlorella concentration be 60 * 10
4Individual/mL Chi Shui;
(3) 3 age in days prelarvas and 4 age in days prelarvas: the morning and afternoon are added chlorella and brachionus plicatilis respectively in the water of pond, keeping chlorella concentration is 60 * 10
4Individual/mL Chi Shui, make brachionus plicatilis concentration reach 15～25/mL Chi Shui;
(4) 5 age in days prelarvas: the morning and afternoon, each backward Chi Shui of salinity that regulates added chlorella and brachionus plicatilis, and keeping chlorella concentration is 60 * 10
4Individual/mL Chi Shui, keeping brachionus plicatilis concentration is 15～25/mL Chi Shui;
(5) 6 age in days prelarvas: add chlorella and brachionus plicatilis to Chi Shui respectively with afternoon after adding seawater the morning, keeping chlorella concentration is 60 * 10
4Individual/mL Chi Shui, keeping brachionus plicatilis concentration is 15～25/mL Chi Shui;
Prelarva after (6) 7 ages in days: add chlorella and brachionus plicatilis after adding seawater every day, make chlorella concentration reach 70 * 10
4Individual/mL Chi Shui, keeping brachionus plicatilis concentration is 15～25/mL Chi Shui.
Regulating the breeding water body salinity and improving under the dual measure of bait, compared with prior art, the inventive method makes spotted maigre prelarva aperture opening ratio bring up to about 90% from 50%.
Embodiment
This example improves the method for spotted maigre prelarva aperture opening ratio and carries out according to the following steps:
One, prepares 6 of nursery ponds, single nursery pond specification: length * wide * height=250 * 200 * 200 (cm
3), each nursery pond adds the seawater (salinity is about 23 ‰) after the sand filtration in advance, and water level is all at 50cm.6 nursery ponds are divided into three groups of A, B, C, and wherein the A group is organized the salinity of throwing something and feeding traditional bait but regulating breeding water body for salinity and bait, the C of control group, B group adjusting breeding water body.Behind the spotted maigre parent natural spawning, collect fertilized egg with 60 order gauzes, the fertilized egg after the filtration adds respectively about 30.0 ten thousand of 200mL in each nursery pond, and the breeding water body temperature is controlled at 18 ℃～24 ℃, and inflation is cultivated.Behind the 24h, prelarva rupture of membranes and going out carries out multidraw to 6 nursery ponds and adds up prelarva quantity in each pond, estimates that prelarva quantity on average is about 21.0 ten thousand tails in each nursery pond, newly hatched larvae is inflated in nursery pond temporarily supported one day.
A group: salinity maintains about 23 ‰ all the time, and identical with the B group bait method of throwing something and feeding.
B group processing method is as follows:
(1) 1 age in days prelarva: add fresh water the morning in every breeding water body, and measure salinity with salinometer, will cultivate water salinity and be adjusted to 20 ‰; Then will cultivate water salinity with fresh water and be adjusted to 17 ‰ afternoon; Add morning and afternoon in each backward pond water of fresh water at every turn and add chlorella, and make its concentration reach 60 * 10
4Individual/mL Chi Shui;
(2) 2 age in days prelarvas: add fresh water the morning in every breeding water body, and measure salinity with salinometer, will cultivate water salinity and be adjusted to 14 ‰; Then will cultivate water salinity with fresh water and be adjusted to 11 ‰ afternoon; Each adds the brachionus plicatilis of strengthening through chlorella after adding fresh water morning and afternoon in the water of pond at every turn, and makes its concentration reach 5～10/mL Chi Shui, and keeping chlorella concentration is 60 * 10
4Individual/mL Chi Shui;
(3) 3 age in days prelarvas and 4 age in days prelarvas: salinity maintains 11 ‰, and morning and afternoon, each once added chlorella and brachionus plicatilis in the water of pond, and making chlorella concentration is 60 * 10
4Individual/mL Chi Shui, brachionus plicatilis concentration is 15～25/mL Chi Shui;
(4) 5 age in days prelarvas: add seawater the morning in nursery pond, and measure salinity with salinometer, and the salinity of breeding water body is adjusted to 14 ‰; To cultivate water salinity with seawater and be adjusted to 17 ‰ afternoon; Each add seawater after, add in right amount chlorella and brachionus plicatilis, keep that the bead concentration of algae is 60 * 10 in the water body
4Individual/mL Chi Shui, brachionus plicatilis concentration is 15～25/mL Chi Shui;
(5) 6 age in days prelarvas: add seawater the morning in nursery pond, and measure salinity with salinometer, and the breeding water body salinity is reached about 20 ‰, adds in right amount subsequently chlorella and brachionus plicatilis, and keeping the water body chlorella is 60 * 10
4Individual/mL Chi Shui, brachionus plicatilis is 15～25/mL Chi Shui, again adds afternoon and keeps said concentration.
(6) 7 age in days prelarvas later on every daily seawater are changed in the breeding water body half, and minute morning and twice interpolation in afternoon, chlorella concentration is reached and maintain 70 * 10
4Individual/mL Chi Shui, brachionus plicatilis concentration maintains 15～25/mL Chi Shui.The basic breeding seawater salinity of recovering is to normal seawater salinity (23 ‰) in 3 days.
C group processing method is as follows:
(1) 1 age in days prelarva: add fresh water the morning in every breeding water body, and measure salinity with salinometer, will cultivate water salinity and be adjusted to 20 ‰; Then will cultivate water salinity with fresh water and be adjusted to 17 ‰ afternoon;
(2) 2 age in days prelarvas: add fresh water the morning in every breeding water body, and measure salinity with salinometer, will cultivate water salinity and be adjusted to 14 ‰; Then will cultivate water salinity with fresh water and be adjusted to 11 ‰ afternoon;
(3) 3 age in days prelarvas: prelarva this moment initial feeding, salinity maintains 11 ‰; Morning and afternoon, each once added chlorella and brachionus plicatilis in the water of pond, and keeping chlorella concentration is 10 * 10
4Individual/mL Chi Shui, brachionus plicatilis concentration is 5～10/mL Chi Shui.
(5) 4 age in days prelarvas: with the processing of 3 age in days prelarvas;
(6) 5 age in days prelarvas: add seawater the morning in nursery pond, and measure salinity with salinometer, and the salinity of breeding water body is adjusted to 14 ‰; To cultivate water salinity with seawater and be adjusted to 17 ‰ afternoon; Each add seawater after, add in right amount chlorella and brachionus plicatilis, keep that the bead concentration of algae is 10 * 10 in the water body
4Individual/mL Chi Shui, brachionus plicatilis concentration is 5～10/mL Chi Shui;
(7) 6 age in days prelarvas: add seawater the morning in nursery pond, and measure salinity with salinometer, and the breeding water body salinity is reached about 20 ‰, adds in right amount subsequently chlorella and brachionus plicatilis, and keeping water body chlorella concentration is 10 * 10
4Individual/mL Chi Shui, brachionus plicatilis concentration is 10～15/mL Chi Shui, again adds afternoon and keeps said concentration.
Add seawater every day after (8) the 7 age in days prelarvas, progressively made the salinity of breeding water body substantially return to 23 ‰ in 3 days, adds chlorella and brachionus plicatilis, makes chlorella concentration maintain 20 * 10
4Individual/mL Chi Shui, keeping brachionus plicatilis concentration is 10～15/mL Chi Shui.
Two, after prelarva enters 4 ages in days, each took out the 1000ml breeding water body that contains prelarva from 6 nursery ponds evening on the same day, the situation of ingesting of observed and recorded prelarva under anatomical lens estimates that A organizes the prelarva that ingests in each nursery pond and counts average out to 11.0 ten thousand tails respectively, and average aperture opening ratio is 52.5%; Estimate that B organizes the prelarva that ingests in each nursery pond and counts average out to 19.1 ten thousand tails, average aperture opening ratio reaches 90.5%, estimates that C organizes the prelarva that ingests in each nursery pond and counts average out to 15.8 ten thousand tails, and average aperture opening ratio reaches the aperture opening ratio of 75.2%, B group and C group and significantly organizes greater than A.
Claims (2)
1. method that improves spotted maigre prelarva aperture opening ratio to the prelarva bait of throwing something and feeding, is characterized in that at the initial stage of larvae growth the salinity of prelarva breeding water body being regulated simultaneously behind the incubating oosperm, and concrete steps are:
(1) newly hatched larvae is that inflation was supported one day temporarily in 23 ‰ the breeding water body in salinity;
(2) 1 age in days prelarvas: the morning and afternoon add respectively fresh water, make the pond salinity water reach respectively 20 ‰ and 17 ‰;
(3) 2 age in days prelarvas: the morning and afternoon add respectively fresh water, make the pond salinity water reach respectively 14 ‰ and 11 ‰;
(4) 3 age in days prelarvas and 4 age in days prelarvas: the pond salinity water maintains 11 ‰;
(5) 5 age in days prelarvas: the morning and afternoon add seawater respectively in breeding water body, make the pond salinity water reach respectively 14 ‰ and 17 ‰;
(6) 6 age in days prelarvas: add seawater the morning in breeding water body, makes pond water body degree reach 20 ‰;
Add seawater every day after (7) the 7 age in days prelarvas in breeding water body, progressively makes the pond salinity water return to 23 ‰.
2. as claimed in claim method is characterized in that also the bait of throwing something and feeding being controlled, and concrete grammar is:
(1) 1 age in days prelarva: the morning and afternoon, each the adjusting in the backward pond of salinity added chlorella, made its concentration reach 60 * 10
4Individual/mL Chi Shui;
(2) 2 age in days prelarvas: the morning and afternoon, each the adjusting in the water of the backward pond of salinity added the brachionus plicatilis of strengthening through chlorella, made its concentration reach 5～10/mL Chi Shui, and to keep chlorella concentration be 60 * 10
4Individual/mL Chi Shui;
(3) 3 age in days prelarvas and 4 age in days prelarvas: the morning and afternoon are added chlorella and brachionus plicatilis respectively in the water of pond, keeping chlorella concentration is 60 * 10
4Individual/mL Chi Shui, make brachionus plicatilis concentration reach 15～25/mL Chi Shui;
(4) 5 age in days prelarvas: the morning and afternoon, each backward Chi Shui of salinity that regulates added chlorella and brachionus plicatilis, and keeping chlorella concentration is 60 * 10
4Individual/mL Chi Shui, keeping brachionus plicatilis concentration is 15～25/mL Chi Shui;
(5) 6 age in days prelarvas: add chlorella and brachionus plicatilis to Chi Shui respectively with afternoon after adding seawater the morning, keeping chlorella concentration is 60 * 10
4Individual/mL Chi Shui, keeping brachionus plicatilis concentration is 15～25/mL Chi Shui;
Prelarva after (6) 7 ages in days: add chlorella and brachionus plicatilis after adding seawater every day, make chlorella concentration reach 70 * 10
4Individual/mL Chi Shui, keeping brachionus plicatilis concentration is 15～25/mL Chi Shui.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104054597A (en) * | 2014-03-17 | 2014-09-24 | 浙江省海洋水产研究所 | Nibea albiflora fry artificial mixed feed domestication method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101273717A (en) * | 2008-05-13 | 2008-10-01 | 三门县琴海水产养殖有限公司 | Culture method of spotted maigre |
| CN102124974A (en) * | 2011-03-15 | 2011-07-20 | 浙江省海洋水产研究所 | Method for artificially breeding seed of spotted maigre |
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2011
- 2011-09-02 CN CN201110257185.0A patent/CN102960268B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101273717A (en) * | 2008-05-13 | 2008-10-01 | 三门县琴海水产养殖有限公司 | Culture method of spotted maigre |
| CN102124974A (en) * | 2011-03-15 | 2011-07-20 | 浙江省海洋水产研究所 | Method for artificially breeding seed of spotted maigre |
Non-Patent Citations (2)
| Title |
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| 余方平等: "舟山近海黄姑鱼胚胎发育及前期仔鱼形态的观察", 《海洋渔业》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104054597A (en) * | 2014-03-17 | 2014-09-24 | 浙江省海洋水产研究所 | Nibea albiflora fry artificial mixed feed domestication method |
| CN104054597B (en) * | 2014-03-17 | 2016-01-20 | 浙江省海洋水产研究所 | A kind of spotted maigre fingerlings artificial manufactured feed domesticating method |
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| CN102960268B (en) | 2015-04-22 |
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