CN115968814A - Perch micropterus salmoides fry breeding method - Google Patents
Perch micropterus salmoides fry breeding method Download PDFInfo
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- CN115968814A CN115968814A CN202211543679.XA CN202211543679A CN115968814A CN 115968814 A CN115968814 A CN 115968814A CN 202211543679 A CN202211543679 A CN 202211543679A CN 115968814 A CN115968814 A CN 115968814A
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Abstract
The invention discloses a micropterus salmoides fry breeding method, and relates to aquatic product breeding. Stocking largemouth bass fry in a culture pond, and setting a feeding period; feeding largemouth bass fries in the culture pond according to the feeding period; and when feeding, inducing the largemouth black perch seedlings in the culture pond to gather in a feeding area, and feeding the largemouth black perch seedlings to the feeding area through an oxygen increasing and refining feeding method. The invention realizes the concentrated feeding of the fry, effectively prevents the problem of feed waste caused by excessive feed leakage, simultaneously plays a role in preventing the fry from migrating to other areas due to the lack of oxygen in the feeding area and being incapable of feeding the feed, is favorable for the growth consistency of the fry, and has low feeding cost.
Description
Technical Field
The invention relates to aquatic product culture, in particular to a micropterus salmoides fry breeding method.
Background
The micropterus salmoides are high-quality edible fishes, and have the advantages of high meat yield, good taste, delicious taste and no muscle prickling. The origin is in the americas and has been introduced to the world for cultivation because of its excellent quality. The micropterus salmoides are wide-warm carnivorous fishes, can be fed and domesticated by artificial feed, and can be cultured in fresh water or in delta areas with certain salinity.
The largemouth bass fry has short digestive tract, large food intake and fast growth, so that the feeding time required by each meal is long, and the largemouth bass fry is required to be fed in no time of day and night. In addition, once the bait in the culture pond is insufficient or uneven, the specifications of the seedlings are easy to be different, so that the phenomenon of eating too much and too little is caused, and the survival rate is seriously influenced. Therefore, in the process of breeding micropterus salmoides fries, the feeding of the feed is a fine and heavy labor.
At present, when largemouth bass fingerlings are cultivated, the same batch of hatched fingerlings (generally millions of fingerlings) are placed in a culture pond, and then bait is put into the culture pond through a feeder. Due to the wide water surface of the culture pond, the feeding is difficult to realize uniform feeding in the culture pond. Generally, the feed is put into a specific area or a plurality of areas so as to realize the centralized feeding of the seedlings. However, such feeding methods still have some drawbacks. For example, when fed, the offspring seeds will gather. The oxygen content of the water body in the area can be rapidly reduced when excessive seedlings are positioned in the same water area, and at the moment, some seedlings can swim away from the water area and swim back after other seedlings finish feeding. However, feeding is often stopped at this point, and very little or only some feed residue remains in the area, resulting in insufficient food for these offspring. By doing so, the growth speed is far lower than that of the seedlings with sufficient food intake.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the largemouth bass fry rearing method aiming at the defects of the prior art, realize the centralized feeding of fry, effectively prevent the problem of feed waste caused by excessive feed leakage, simultaneously play a role in preventing the fry from migrating to other areas due to the oxygen deficiency in the feeding area and being unable to eat feed, and be beneficial to the growth consistency of the fry.
The invention relates to a micropterus salmoides fry breeding method, which comprises the steps of stocking micropterus salmoides fries in a breeding pond, and setting a feeding period; feeding largemouth bass fries in the culture pond according to the feeding period; and when feeding, luring the largemouth black bass seedlings in the culture pond to enable the largemouth black bass seedlings to gather in a feeding area, and feeding the largemouth black bass seedlings to the feeding area through an oxygenation and refining feeding method.
The oxygen-increasing refining feeding method comprises the following steps of,
according to the number of micropterus salmoides fries in the culture pond, taking equivalent feed to be put into a storage tank for storing water, and uniformly stirring to form feed liquid rich in dissolved oxygen; and intermittently throwing the feed liquid to a feeding area at set intervals.
The preparation method of the feed liquid rich in dissolved oxygen comprises the following steps,
an air supply pipe with a plurality of air outlet holes is arranged at the bottom of the material storage groove, the air supply pipe is connected with an air pump, and an inverted U-shaped pipe section for preventing backflow is arranged on the air supply pipe;
when the feed is put into the material storage tank, starting an air pump to inject air into the bottom of the material storage tank so as to generate bubbles; and stirring the water and the feed in the storage tank through the bubbles to form a feed liquid rich in dissolved oxygen.
The material storage tank is characterized in that a discharge port is formed in one end of the material storage tank, a sealing door capable of sealing the discharge port is installed in the discharge port in a sliding mode, and the sealing door is driven by an electric telescopic rod to enable the sealing door to open or seal the discharge port.
The inducing treatment is specifically that,
taking a culture pond in front of a discharge port of the storage material groove as a feeding area, arranging a water spraying pipe on one side of the feeding area, and arranging a plurality of strip seams which are flush with the water surface of the culture pond on the water spraying pipe; the water spray pipe is connected with a submersible pump arranged in the culture pond;
when the submersible pump is started, the water body is sprayed out from the slit and impacts against the water surface, water flow is formed in the feeding area, and therefore the largemouth bass seedlings are gathered in the feeding area.
And arranging a green light source in the feeding area to attract largemouth bass seedlings to gather in the feeding area.
Feeding largemouth bass fry in different growth periods by a feed changing method.
The feed changing method specifically comprises the following steps of,
when the largemouth bass fry is put in stocking, the largemouth bass fry in the breeding pond is fed and bred by taking the fairy shrimp larva as feed;
feeding the micropterus salmoides in the culture pond by taking zooplankton as feed after feeding the micropterus salmoides in the culture pond for 6-10 days;
and after the micropterus salmoides fries in the culture pond are fed for 25-30 days, feeding the micropterus salmoides fries in the culture pond by taking pellet feed as feed.
Advantageous effects
The invention has the advantages that:
1. after largemouth black bass fry in the culture pond are attracted and gathered in a feeding area, the largemouth black bass fry are fed into the feeding area through an oxygen increasing and refining feeding method, a water body rich in dissolved oxygen and feed uniformly distributed in the water body are fed into the feeding area, the fry can be fed in a concentrated mode, and the problem of feed waste caused by excessive feed leakage is effectively solved. In addition, the water body rich in dissolved oxygen and the feed are simultaneously fed into the feeding area, so that the problem that the oxygen amount in the water body is insufficient due to the fact that excessive seedlings are gathered in the feeding area is well solved, the effect of preventing the seedlings from migrating to other areas and not eating the feed due to the fact that the seedlings lack of oxygen in the feeding area is achieved, and the consistency of seedling growth is facilitated.
2. Through set up in the air supply pipe of holding the silo tank bottom in order to pour into the outside air into holding the silo, can realize increasing in the water oxygen content while, also realized the stirring to water and fodder. And the manufacturing method is simple and easy to operate.
3. The largemouth bass fry in different growth periods is fed by a feed changing method, the feeding capability of the fry is considered, the growth speed of the fry is ensured, and meanwhile, the feed cost in the whole fry breeding process can be effectively reduced.
Drawings
FIG. 1 is a schematic view showing the structure of an apparatus for carrying out the cultivation method of the present invention.
Wherein: 1-floating mounting frame, 2-material storage tank, 3-water spray pipe, 4-green light source and 5-closing plate.
Detailed Description
The invention is further described below with reference to examples, but not to be construed as being limited thereto, and any number of modifications which can be made by anyone within the scope of the claims are also within the scope of the claims.
Referring to fig. 1, the micropterus salmoides fry breeding method of the present invention breeds micropterus salmoides fry in a breeding pond, and sets a feeding period. And feeding the largemouth bass fries in the culture pond according to the feeding period. Generally, the feeding cycle is set to 4 times. Namely, four times of feeds are fed to the largemouth bass fries every day.
When feeding, firstly, the largemouth bass fry in the culture pond is induced and treated, and the fry in other areas in the culture pond are guided, so that the largemouth bass fry is gathered in a feeding area. Wherein, regard as the region of throwing something and feeding with installing the breed pond in 2 discharge gates fronts of storage groove of floating mounting bracket 1 one side. Then, feeding is carried out on the feeding area through an oxygenation and material mixing feeding method, so that the water body rich in dissolved oxygen and the feed uniformly distributed in the water body are fed into the feeding area, the fry can be fed in a concentrated mode, and the problem of feed waste caused by excessive material leakage is effectively solved. In addition, because gathering of the seedlings can cause the requirement of a large amount of dissolved oxygen in the feeding area, the invention simultaneously puts the water body rich in the dissolved oxygen and the feed into the feeding area, well avoids the problem that the oxygen amount in the water body is insufficient due to the excessively gathered seedlings in the feeding area, plays a role in preventing the seedlings from migrating to other areas and not eating the feed due to the lack of oxygen in the feeding area, and is favorable for the growth consistency of the seedlings.
Specifically, the attracting treatment includes the following two modes.
The first mode is as follows: a floating installation frame 1 is built above the feeding area, and a green light source 4, such as an LED lamp strip capable of emitting green light, is installed on the floating installation frame 1. The largemouth bass fry is attracted to gather in the feeding area through green light. The floating installation frame 1 can be formed by four floating columns in a surrounding mode, and the green light source 4 is installed in a space formed by the four floating columns in a surrounding mode.
The second mode is as follows: a spray pipe 3 is arranged at one side of the feeding area, and the spray pipe 3 is positioned below the material storage tank 2. The water spraying pipe 3 is provided with a plurality of strip seams which are flush with the water surface of the culture pond. The water spraying pipe 3 is connected with a submersible pump arranged in the culture pond. When the submersible pump is started, the water body is sprayed out from the slit and impacts the water surface, water flow is formed in the feeding area, and therefore largemouth bass seedlings are gathered in the feeding area. In addition, the fodder that drops in holding silo 2 still can be carried into to the district of throwing something and feeding to the rivers that flow to realize evenly throwing something and feeding.
Because the two attraction modes are not interfered with each other when being realized, the two attraction modes can be simultaneously used, and the attraction effect is better.
The oxygen-increasing and material-homogenizing feeding method specifically comprises the steps of taking equivalent feed according to the number of micropterus salmoides fries in a culture pond, putting the equivalent feed into a storage tank 2 which stores water, and uniformly stirring to form feed liquid rich in dissolved oxygen. And (4) throwing the feed liquid to a feeding area intermittently at set interval periods.
For example, the culture pond can hold 300 ten thousand largemouth bass seedlings. According to the cultivation experience, 300 ten thousand seedlings which are just hatched are put in, and at least 4 kg of feed is fed every day. Since the feeding is carried out four times a day, 1 kilogram of the feed is fed each time. Considering that the swimming capacity and the ingestion energy of the fries just hatched are poor, and in order to avoid the problem of feed waste caused by the fact that the fries are too late to ingest due to continuous feeding, the invention intermittently throws the feed liquid into the culture pond in an intermittent feeding mode.
It should be noted that the feeding amount should be increased every day relative to the previous day, and the increased amount may be 5% -10% of the feeding amount of the previous day to ensure the sufficiency of the feed.
In order to realize intermittent throwing of the feed, a discharge port is formed in one side of the bottom of the storage tank 2, a sealing door 5 capable of sealing the discharge port is installed in the discharge port in a sliding mode, and the sealing door 5 is driven through an electric telescopic rod so that the discharge port can be opened or closed by the sealing door 5. Namely, the electric telescopic rod drives the closing door 5 to reciprocate, so that the closing door 5 can be opened or closed at intervals.
In order to realize the throwing of the feed liquid, the storage tank 2 is of a gradually-changing structure with a wide upper part and a narrow lower part, so that the water body at the bottom of the storage tank 2 is subjected to higher pressure, and the water body at the lower part is extruded out from the discharge hole through the pressure of the water body at the middle upper part of the storage tank 2 on the water body at the lower part, thereby forming a throwing shape.
In order to realize the production of the feed liquid rich in dissolved oxygen, an air supply pipe with a plurality of air outlets is arranged at the bottom of the storage tank 2, the air supply pipe is connected with an air pump, and an inverted U-shaped pipe section for preventing backflow is arranged on the air supply pipe. When feed is put into the storage tank 2, the air pump is started to inject air into the bottom of the storage tank 2 to generate bubbles. The water and the feed in the storage tank 2 are stirred by the air bubbles to form a feed solution rich in dissolved oxygen. The preparation method is simple and easy to operate, and can realize the stirring of water and feed while increasing the oxygen content in the water body.
The newly hatched offspring seeds are poor in feeding ability, so that the newly hatched offspring seeds are required to be fed with feeds which are easy to eat and consume and high in protein, and are small in size. However, these feeds are often expensive. The feeding ability of the fry is enhanced along with the growth of the fry, and other feeds with lower price can be fed at the moment so as to reduce the feed cost in the whole fry breeding process. Based on the method, the largemouth bass fry in different growth periods is fed by a feed changing method.
The feed changing method specifically comprises the step of feeding and cultivating the largemouth bass fries in the culture pond by taking the fairy shrimp larvae as feed when the largemouth bass fries are put in stocking, so as to be beneficial to feeding and digesting the fries. And feeding the micropterus salmoides fries in the culture pond by 7 days, and feeding the micropterus salmoides fries in the culture pond by using zooplankton as feed. And after the micropterus salmoides fries in the culture pond are fed for 25 days, feeding the micropterus salmoides fries in the culture pond by taking the pellet feed as feed until the fries can be transferred into the pond.
Namely, the cultivation of the fries is divided into three periods, wherein the first period is expensive, but the fairy shrimp larvae which are easy to feed the fries are used as feed, which is beneficial to the rapid growth of the fries. In the second period, zooplankton is used as feed and as transition feed. And in the third period, the pellet feed is used as the feed, and if the feeding reaction of the seedlings on the pellet feed is good, the seedlings can be transferred to a pond for culture.
The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various changes and modifications without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicability of the patent.
Claims (8)
1. A largemouth bass fry breeding method is characterized in that largemouth bass fries are put in a breeding pond, and a feeding period is set; feeding largemouth bass fries in a culture pond according to the feeding period; and when feeding, inducing the largemouth black perch seedlings in the culture pond to gather in a feeding area, and feeding the largemouth black perch seedlings to the feeding area through an oxygen increasing and refining feeding method.
2. The micropterus salmoides fry culturing method according to claim 1, wherein the oxygen-increasing and refining feeding method is specifically,
according to the number of micropterus salmoides fries in the culture pond, taking equivalent feed to be put into a storage tank (2) for storing water, and uniformly stirring to form feed liquid rich in dissolved oxygen; and intermittently throwing the feed liquid to a feeding area at set intervals.
3. The method for cultivating Lateolabrax micropterus offspring seeds according to claim 2, wherein the method for preparing the feed liquid rich in dissolved oxygen comprises,
an air supply pipe with a plurality of air outlet holes is arranged at the bottom of the material storage tank (2), and the air supply pipe is connected with an air pump;
when the feed is put into the storage tank (2), starting an air pump to inject air into the bottom of the storage tank (2) so as to generate bubbles; the water and the feed in the storage tank (2) are stirred by the bubbles to form feed liquid rich in dissolved oxygen.
4. The micropterus salmoides fry rearing method according to claim 2, characterized in that a discharge port is arranged at one end of the storage tank (2), a closing door (5) capable of closing the discharge port is slidably installed in the discharge port, and the closing door (5) is driven by an electric telescopic rod to make the closing door (5) reciprocate at intervals.
5. The micropterus salmoides fry rearing method according to claim 2, characterized in that the luring treatment is specifically,
taking a culture pond in front of a discharge port of the material storage tank (2) as a feeding area, arranging a water spraying pipe (3) on one side of the feeding area, and arranging a plurality of strip seams which are flush with the water surface of the culture pond on the water spraying pipe (3); the spray pipe (3) is connected with a submersible pump arranged in the culture pond;
when the submersible pump is started, the water body is sprayed out from the slit and impacts against the water surface, water flow is formed in the feeding area, and therefore the largemouth bass seedlings are gathered in the feeding area.
6. A largemouth bass fry rearing method according to claim 5, wherein a green light source (4) is provided in the feeding area to attract largemouth bass fry to gather in the feeding area.
7. The method for cultivating micropterus salmoides fry according to any one of claims 1-6, wherein micropterus salmoides fry of different growth stages are fed by a feed changing method.
8. The method for cultivating micropterus salmoides fry according to claim 7, wherein the feed modification method is specifically,
when the micropterus salmoides are put in a stocking way, feeding and cultivating the micropterus salmoides in a cultivation pond by taking the artemia larvae as feed;
feeding the micropterus salmoides fries in the culture pond by taking zooplankton as feed after the micropterus salmoides fries in the culture pond are fed for 6-10 days;
and after the micropterus salmoides fries in the culture pond are fed for 25-30 days, feeding the micropterus salmoides fries in the culture pond by taking pellet feed as feed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116548355A (en) * | 2023-06-27 | 2023-08-08 | 中国水产科学研究院 | Brine young feeding device in aquatic offspring seed cultivation process and using method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116548355A (en) * | 2023-06-27 | 2023-08-08 | 中国水产科学研究院 | Brine young feeding device in aquatic offspring seed cultivation process and using method |
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