CN113412801B - Simple method for rapidly domesticating zander - Google Patents
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/10—Culture of aquatic animals of fish
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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 discloses a simple method for quickly domesticating zander, belongs to the field of zander domestication, and aims to solve the technical problems of high culture cost, long domestication time and large domestication risk of zander in the prior art. The method comprises the following steps: feeding slowly-descending domesticated feed to zander fries which are raised in a pond for 20-25 days, splashing anti-stress drugs, capturing the zander fries to a workshop, domesticating the zander fries in stages of no-feeding, feeding feed comprising zooplankton, micro-particle feed, slowly-sinking particle feed and floating No. 1 weever material in a step-by-step transition mode, wherein the domestication time is reduced from 45 days to 20-23 days, and the domestication survival rate is 68-80%. The method can effectively reduce the culture cost and risk of the zander, reduce the culture difficulty of the zander, and can be used in the field of culture of the zander.
Description
Technical Field
The invention relates to a zander domestication method.
Background
The zander lucioperca element is called as the freshwater fish king, is fat and thick in body and meat, rich in nutrition, tender in meat quality and delicious in taste, and is a new object of freshwater aquaculture with high-quality development potential. The traditional zander breeding mode is live bait feeding, the breeding cost is higher, the development of the zander industry is not facilitated, and in order to solve the problem of zander bait, the existing scholars domesticate the zander fries, but the problems of long domestication time, low survival rate and large domestication risk generally exist. For example, the Chinese patent with the application number of 201410149678.6 discloses a method for domesticating zander seedlings by adopting a mode of 'using live baits → surimi → soft pellet feed → hard pellet feed', the domesticating survival rate is improved from 30% to 73%, and an advanced idea is provided for the domestication of the zander. However, this method has 4 problems: firstly, the average body length of domesticated fries is 3-6 cm, the average body length is 4.8cm, the fries are large, zander can kill each other by self after being 2.5cm above, and excessive domestication specifications inevitably cause that a part of zander is swallowed mutually, which is not beneficial to controlling the breeding cost; secondly, the domestication time is as long as more than 46 days, the domestication time is long, the zander domestication is usually carried out in a circulation workshop, the water body of the circulation workshop is relatively small, and the water quality in the zander domestication process is unstable, so that fish diseases are easy to erupt; thirdly, the space of a circulating workshop is small, and the long domestication time is not beneficial to the rapid growth of the zander; 4. the domestication process is complex, the operation flow needs relatively professional aquatic workers, and the farmer is difficult to operate.
Disclosure of Invention
The invention provides a simple method for quickly domesticating zander, aiming at solving the technical problems of high breeding cost, long domestication time and large domestication risk of the prior zander fries.
The simple method for rapidly domesticating the zander is carried out according to the following steps:
1. feeding slowly sinking domesticated feed with protein content not less than 45% by weight for 3-4 days after the zander pond is developed for 20-25 days; then sprinkling anti-stress drugs for catching; when the zander pond is developed for 20-25 days, the fish body is about 2.3-3 cm, and the zander mainly takes copepods zooplanktons such as Chinese philosoides and Daphnia magna in the water body as food, and timely feeds slowly sinking domesticated feed, so that the adaptability of zander seedlings is improved, anti-stress drugs splashed before catching are taken, and the emergency death of the zander seedlings is reduced;
2. putting the larvas caught in the step one into a workshop, wherein the putting density of the larvas is 1000-1200/m 3 The water temperature of a workshop is controlled to be 20-23 ℃;
3. feeding the zander fries in stages after the zander fries are placed in a workshop, wherein the feeding frequency in each stage is 5 times per day, each time is 40-60 minutes, and 2-2.5 hours after the last feeding in each night, and waste materials are cleaned;
(1) In the first stage, no feeding is carried out, and the first stage is 2-3 days;
(2) Feeding soft feed in the second stage for 2-3 days; wherein the soft feed is composed of zooplankton, micro-particle feed with 45-50% of protein mass percentage and liquid according to the mass ratio of 2:2:1, grinding the mixture by a 20-mesh iron net to obtain the slowly sinking feed; wherein the zooplankton is collected by a zooplankton collector in a zander pond or is captured by a zooplankton net; the liquid is water or probiotic water preparation;
(3) Feeding soft feed for removing zooplankton in the third stage, wherein the third stage is 1-2 days; wherein the soft feed for removing zooplankton is a micro-particle feed with the protein content of 45-50% by mass and a liquid with the mass ratio of 2:1, grinding the mixture by a 20-mesh iron net to obtain the slowly sinking feed; wherein the liquid is water or probiotic water formulation;
(4) Feeding fourth-order feed in the fourth stage, wherein the fourth stage is 2-3 days; the preparation method of the fourth-order feed comprises the following steps: weighing 78-82% of micro-particle feed with the protein mass percentage of 45-50% and 18-22% of slowly sinking domesticated feed with the protein mass percentage of more than or equal to 45% according to the mass percentage; then mixing the micro-particle feed and the liquid according to the mass ratio of 2:1, and grinding the mixture into fine powder by a 20-mesh iron net; adding the slowly sinking domesticated feed into the fine feed, and uniformly mixing to obtain a fourth-order feed; wherein the liquid is water or probiotic water preparation;
(5) Feeding a fifth-order feed in the fifth stage, wherein the fifth stage is 2-3 days; the preparation method of the five-stage feed comprises the following steps: weighing 48-52% of micro-pellet feed with the protein content of 45-50% and 48-52% of slowly sinking domesticated feed with the protein content of more than or equal to 45% according to the mass percentage; and then mixing the micro-particle feed and the liquid according to the mass ratio of 2:1, and grinding the mixture by a 20-mesh iron net to obtain fine materials; adding the slowly sinking domesticated feed into the fine feed, and uniformly mixing to obtain a fifth-order feed; wherein the liquid is water or probiotic water preparation;
(6) Feeding a sixth-order feed in a sixth stage, wherein the sixth stage is 2-3 days; the preparation method of the six-stage feed comprises the following steps: weighing 18-22% of micro-pellet feed with protein content of 45-50% and 78-82% of slowly sinking domesticated feed with protein content of more than or equal to 45% according to mass percentage; and then mixing the micro-particle feed and the liquid according to the mass ratio of 2:1, and grinding the mixture by a 20-mesh iron net to obtain fine materials; adding the slowly sinking domesticated feed into the fine feed, and uniformly mixing to obtain a six-stage feed; wherein the liquid is water or probiotic water formulation;
(7) Screening to obtain qualified offspring seeds and smaller offspring seeds; the qualified offspring seeds enter a seventh stage, the smaller offspring seeds are continuously fed with the feed of the sixth order, and the seventh stage is entered after the feed is fed for 2 to 3 days;
(8) Feeding slowly sinking domesticated feed with the protein mass percentage of the hard particles being more than or equal to 45% in the seventh stage, wherein the seventh stage is 2-3 days;
(9) Feeding eight-stage feed in the eighth stage for 2-3 days; wherein the eight-stage feed is formed by mixing 68-72% of slow-sinking domesticated feed with protein content more than or equal to 45% and 28-32% of floating No. 1 material of weever with protein content of 40-42% by mass percentage;
(10) Feeding nine-stage feed in the ninth stage for 2-3 days; wherein the nine-stage feed consists of the following components in percentage by mass
38 to 42 percent of slow-sinking domesticated feed with the protein content of more than or equal to 45 percent by mass and 58 to 62 percent of floating material No. 1 of weever with the protein content of 40 to 42 percent by mass are mixed;
(11) In the tenth stage, floating No. 1 weever with protein content of 40-42% is fed for 3-4 days to complete the domestication of the zander.
Further, the anti-stress drug in step one is a stressor.
Further, the temperature of the shop water in the second step is controlled to be 22 ℃.
Furthermore, the standard of screening in the third step (7) is that the fish body is qualified when the fish body is more than or equal to 3.5cm, and the fish body is smaller when the fish body is less than 3.5 cm;
the simple method for quickly domesticating the zander reduces the domestication specification of the zander from the average value of 4.8cm to 2.5cm, the zander seedling feed is gradually transited by zooplankton, microparticle feed, slow-sinking domestication feed and floating 1-size material of the zander, the domestication time is reduced from 45 days to 20-33 days, and the domestication survival rate reaches 68-80%. The method can effectively reduce the culture cost and risk of the zander, reduce the culture difficulty of the zander and effectively promote the industrial development of the zander. Is a convenient and simple method for domesticating the zander, and can be used in the field of fishery.
Detailed Description
The following examples demonstrate the beneficial effects of the present invention.
Example 1, the simple method for rapidly acclimating zanthoxylum bungeanum in this example is performed according to the following steps:
1. in 2019, after the zander pond is developed for 20 days, slowly sinking domesticated feed with protein mass percentage content being more than or equal to 45% is fed for 3 days; then sprinkling anti-stress drug stressor and catching; when the zander pond is taken out of the pond for 20 days, the fish body is about 2.3-3 cm, and the zander mainly takes copepods zooplanktons such as Chinese philosoides and Daphnia magna in the water body as food, and feeds slowly sinking domesticated feed, so that the adaptability of zander seedlings is improved, anti-stress drugs splashed before catching are taken, and the emergency death of the zander seedlings is reduced;
2. putting the zander fries caught in the step one into the box 16 # 、15 # 、14 # 、1 # In a workshop, the putting quantity is 1 ten thousand, 1 ten thousand and 2.5 ten thousand in sequence, and the putting density of the zander fries is 1000 per m 3 Controlling the water temperature of a workshop at 22 ℃;
3. after the zander seeds are put into a workshop, feeding the zander seeds in stages, wherein the feeding frequency of each stage is 5 times per day, 40 minutes each time, and 2 hours after the last feeding in each night, and cleaning waste materials;
(1) The first stage is not feeding, and the first stage is 2 days;
(2) Feeding soft feed in the second stage, wherein the second stage is 2 days; wherein the soft feed is composed of plankton, micro-particle feed with 50% of protein mass percentage and water according to the mass ratio of 2:2:1, and grinding the mixture into a slowly sinking feed by a 20-mesh iron net; wherein the zooplankton is collected by a zooplankton collector in a zander pond;
(3) Feeding soft feed for removing zooplankton in the third stage, wherein the third stage is 1 day; wherein the soft feed for removing zooplankton is a micro-pellet feed with 50 percent of protein mass percentage and water with the mass ratio of 2:1, grinding the mixture by a 20-mesh iron net to obtain the slowly sinking feed;
(4) Feeding four-stage feed in the fourth stage, wherein the fourth stage is 2 days; the preparation method of the fourth-order feed comprises the following steps: weighing 80% of micro-particle feed with 50% of protein by mass and 20% of slowly sinking domesticated feed with 50% of protein by mass according to the mass percentage; then mixing the micro-particle feed and water according to the mass ratio of 2:1, and grinding the mixture into fine powder by a 20-mesh iron net; adding the slowly sinking domesticated feed into the fine feed, and uniformly mixing to obtain a fourth-order feed;
(5) Feeding a fifth-order feed in a fifth stage, wherein the fifth stage is 2 days; the preparation method of the five-stage feed comprises the following steps: weighing 50% of micro-pellet feed with the protein content of 50% and 50% of slowly sinking domesticated feed with the protein content of 50% according to the mass percentage; and then mixing the micro-particle feed and water according to a mass ratio of 2:1, and grinding the mixture by a 20-mesh iron net to obtain fine materials; adding the slowly sinking domesticated feed into the fine feed, and uniformly mixing to obtain a fifth-order feed;
(6) Feeding a feed of six orders in a sixth stage, wherein the sixth stage is 2 days; the preparation method of the six-stage feed comprises the following steps: weighing 20% of micro-particle feed with 50% of protein by mass and 80% of slowly sinking domesticated feed with 50% of protein by mass; and then mixing the micro-particle feed and water according to a mass ratio of 2:1, and grinding the mixture by a 20-mesh iron net to obtain fine materials; adding the slowly sinking domesticated feed into the fine feed, and uniformly mixing to obtain a six-stage feed;
(7) Screening, wherein the fish body larger than or equal to 3.5cm is qualified, and the fish body smaller than 3.5cm is small, so as to obtain qualified offspring seeds and small offspring seeds; the qualified offspring seeds enter a seventh stage, the smaller offspring seeds are continuously fed with the feed of the sixth order, and the seventh stage is entered after the offspring seeds are fed for 2 days;
(8) Feeding slowly sinking domesticated feed with the hard particles of which the mass percentage of protein is 50 percent in the seventh stage, wherein the seventh stage is 2 days;
(9) Feeding eight-stage feed in the eighth stage for 2 days; wherein the eight-stage feed is formed by mixing 70 percent of slow-sinking domesticated feed with 50 percent of protein by mass and 30 percent of floating 1-grade material with 40 percent of protein by mass;
(10) Feeding nine-stage feed in the ninth stage for 2 days; wherein the nine-stage feed is formed by mixing 40 percent of slow-sinking domesticated feed with 50 percent of protein content by mass and 60 percent of floating 1 # feed with 40 percent of protein content by mass;
(11) In the tenth stage, floating material No. 1 with protein content of 40% is fed to weever for 3 days to complete the domestication of the weever.
In this embodiment, the slowly sinking domesticated feed with a protein content of not less than 45% by mass in the first step is a cacao speed 2 feed purchased from zhejiang sea feeds ltd, and the micro-pellet feed with a protein content of 50% by mass is a compound feed of the micropterus salmoides produced by Shandong Shengsuo feed science and technology ltd, and has a model number of S1; the floatability No. 1 material of the weever is the expanded No. 1 material of the weever produced by Tianjin City Tianxiang aquatic product Limited liability company.
In this embodiment, the domestication time of the zander fries is 20 to 22 days in total. The number and weight of zander fries entering and leaving the workshop were counted, and the domestication survival rate was calculated as shown in table 1.
TABLE 1 Supper mouth turning domestication condition in 2019 years
Under the condition of domestication in a workshop, the individual size of the zander is not greatly different, the weight is 0.55 to 1.27g, the average weight is 0.87 +/-0.43 g, and the average domestication rate is 70.91 percent.
Before domesticated zander fries are put into a pond, the pond is thoroughly cleaned, 100 kg/mu of quicklime is killed, water is added to 1 meter, the zander fries can be thrown in three days, and the throwing density is 2000 feet/mu.
Example 2, the simple method for rapidly acclimating zanthoxylum bungeanum in this example is performed according to the following steps:
1. in 2020, feeding slowly sinking domesticated feed with protein mass percentage content being more than or equal to 45% for 3 days after the zander pond is developed for 23 days; then sprinkling anti-stress drug stressor, and catching; when the zander pond is taken out of the pond for 23 days, the fish body is about 2.3-3 cm, and the zander mainly takes copepods zooplanktons such as Chinese philosoides and Daphnia magna in the water body as food, and feeds slowly sinking domesticated feed, so that the adaptability of zander seedlings is improved, anti-stress drugs splashed before catching are taken, and the emergency death of the zander seedlings is reduced;
2. putting the zander fries caught in the step one into the box 11 # 、12 # 、13 # In a workshop, the putting quantity is 1 ten thousand, 1 ten thousand and 1 ten thousand in turn, and the putting density of the zander fries is 1000 per m 3 Controlling the water temperature of a workshop at 22 ℃;
3. feeding the zander fries in stages after the zander fries are placed in a workshop, wherein the feeding frequency in each stage is 5 times per day, 40 minutes each time, and 2 hours after the last feeding in each night, and waste materials are cleaned;
(1) In the first stage, no feeding is carried out, and the first stage is 2 days;
(2) Feeding soft feed in the second stage, wherein the second stage is 2 days; wherein the soft feed is composed of 50% of micro-particle feed and water by mass ratio of zooplankton and protein: 2:1, grinding the mixture by a 20-mesh iron net to obtain the slowly sinking feed; wherein the zooplankton is collected by a zooplankton collector in a zander pond;
(3) Feeding soft feed for removing zooplankton in the third stage, wherein the third stage is 2 days; wherein the soft feed for removing zooplankton is a micro-pellet feed with 50 percent of protein mass percentage and water with the mass ratio of 2:1, grinding the mixture by a 20-mesh iron net to obtain the slowly sinking feed;
(4) Feeding fourth-stage feed in a fourth stage for 2 days; the preparation method of the fourth-order feed comprises the following steps: weighing 80% of micro-particle feed with 50% of protein by mass and 20% of slowly sinking domesticated feed with 50% of protein by mass; and then mixing the micro-particle feed with water according to the mass ratio of 2:1, grinding the mixture into fine powder by a 20-mesh iron net; adding the slowly sinking domesticated feed into the fine feed, and uniformly mixing to obtain a fourth-order feed;
(5) Feeding a fifth-order feed in a fifth stage, wherein the fifth stage is 2 days; the preparation method of the five-stage feed comprises the following steps: weighing 50% of micro-pellet feed with the protein content of 50% and 50% of slowly sinking domesticated feed with the protein content of 50% according to the mass percentage; and then mixing the micro-particle feed and water according to a mass ratio of 2:1, and grinding the mixture by a 20-mesh iron net to obtain fine materials; adding the slowly sinking domesticated feed into the fine feed, and uniformly mixing to obtain a five-stage feed;
(6) Feeding a feed of six grades in a sixth stage, wherein the sixth stage is 2 days; the preparation method of the six-stage feed comprises the following steps: weighing 20% of micro-particle feed with 50% of protein by mass and 80% of slowly sinking domesticated feed with 50% of protein by mass; and then mixing the micro-particle feed and water according to a mass ratio of 2:1, and grinding the mixture by a 20-mesh iron net to obtain fine materials; adding the slowly sinking domesticated feed into the fine feed, and uniformly mixing to obtain a six-stage feed;
(7) Screening, wherein the fish body larger than or equal to 3.5cm is qualified, and the fish body smaller than 3.5cm is smaller, so as to obtain qualified offspring seeds and smaller offspring seeds; the qualified offspring seeds enter a seventh stage, the smaller offspring seeds are continuously fed with the feed of the sixth order, and the seventh stage is carried out after the feed is fed for 3 days;
(8) Feeding slowly sinking domesticated feed with the hard particles of which the mass percentage of protein is 50% in the seventh stage, wherein the seventh stage is 2 days;
(9) Feeding the eight-stage feed in the eighth stage for 2 days; wherein the eight-stage feed is formed by mixing 70 percent of slow-sinking domesticated feed with 50 percent of protein content by mass and 30 percent of floating 1 # feed with 40 percent of protein content by mass;
(10) Feeding nine-stage feed in the ninth stage for 2 days; wherein the nine-stage feed is formed by mixing 40 percent of slow-sinking domesticated feed with 50 percent of protein content and 60 percent of floating 1-grade material with 40 percent of protein content according to the mass percentage;
(11) In the tenth stage, floating No. 1 weever with protein content of 40% is fed for 3 days to complete the domestication of the zander.
In this embodiment, the slowly sinking domesticated feed with a protein content of not less than 45% by mass in the first step is a cacao speed 2 feed purchased from zhejiang sea feeds ltd, and the micro-pellet feed with a protein content of 50% by mass is a compound feed of the micropterus salmoides produced by Shandong Shengsuo feed science and technology ltd, and has a model number of S1; the floating material No. 1 of the weever is expanded feed No. 1 of the weever produced by Tianjin City Tianxiang aquatic product Limited liability company.
In this embodiment, the domestication time of the zander fries is 21 to 23 days in total. The number and weight of zander fries entering and leaving the workshop were counted, and the domestication survival rate was calculated as shown in table 2.
TABLE 2 annual zander mouth-turning domestication
Under the condition of workshop domestication, the individual size difference of the zander is not large, the weight is 0.75-1.81 g, the average weight is 1.22 +/-0.35 g, and the average domestication rate is 77.33%.
Before domesticated zander fries are put into a pond, the pond is thoroughly cleaned, 100 kg/mu of quicklime is killed, water is added to 1 meter, the zander fries can be thrown in three days, and the throwing density is 2000 feet/mu.
Claims (3)
1. A simple method for rapidly domesticating zander is characterized by comprising the following steps:
1. after the zander pond is developed for 20 to 25 days, the length of the fish body is 2.3 to 3cm, and slowly sinking domesticated feed with protein mass percentage of more than or equal to 45 percent is fed for 3 to 4 days; then sprinkling anti-stress drugs for catching;
2. putting the larvas caught in the step one into a workshop, wherein the putting density of the larvas is 1000-1200/m 3 Controlling the water temperature of a workshop at 20-23 ℃;
3. after the zander seeds are put into a workshop, feeding the zander seeds in stages, wherein the feeding frequency of each stage is 5 times per day, 40-60 minutes each time, and 2-2.5 hours after the last feeding in each night, and waste materials are cleaned;
(1) The first stage is not fed, and the first stage is 2 to 3 days;
(2) Feeding soft feed in the second stage, wherein the second stage is 2-3 days; wherein the soft feed is composed of plankton, micro-particle feed with 45% -50% of protein mass percentage and liquid according to the mass ratio of 2:2:1, grinding the mixture by a 20-mesh iron net to obtain the slowly sinking feed; wherein the zooplankton is collected by a zooplankton collector in a zander pond or is captured by a zooplankton net; the liquid is water or probiotic water preparation;
(3) Feeding soft feed for removing zooplankton in the third stage, wherein the third stage is 1-2 days; wherein the soft feed for removing zooplankton is a micro-particle feed with the protein content of 45-50% by mass and a liquid with the mass ratio of 2:1, grinding the mixture by a 20-mesh iron net to obtain the slowly sinking feed;
(4) Feeding fourth-order feed in the fourth stage, wherein the fourth stage is 2-3 days; the preparation method of the fourth-order feed comprises the following steps: weighing 78-82% of micro-particle feed with protein content of 45-50% and 18-22% of slowly sinking domesticated feed with protein content of more than or equal to 45% according to mass percentage; and then mixing the micro-particle feed and the liquid according to the mass ratio of 2:1, and grinding the mixture into fine powder by a 20-mesh iron net; adding the slowly sinking domesticated feed into the fine feed, and uniformly mixing to obtain a fourth-order feed;
(5) Feeding fifth-order feed in the fifth stage, wherein the fifth stage is 2-3 days; the preparation method of the five-stage feed comprises the following steps: weighing 48-52% of micro-pellet feed with the protein content of 45-50% and 48-52% of slowly sinking domesticated feed with the protein content of more than or equal to 45% according to the mass percentage; and then mixing the micro-particle feed and the liquid according to the mass ratio of 2:1, and grinding the mixture by a 20-mesh iron net to obtain fine materials; adding the slowly sinking domesticated feed into the fine feed, and uniformly mixing to obtain a fifth-order feed;
(6) Feeding a feed of six orders in a sixth stage, wherein the sixth stage is 2-3 days; the preparation method of the six-stage feed comprises the following steps: weighing 18-22% of micro-pellet feed with protein content of 45-50% and 78-82% of slowly sinking domesticated feed with protein content of more than or equal to 45% according to mass percentage; and then mixing the micro-particle feed and the liquid according to the mass ratio of 2:1, and grinding the mixture by a 20-mesh iron net to obtain fine materials; adding the slowly sinking domesticated feed into the fine feed, and uniformly mixing to obtain a six-stage feed;
(7) Screening to obtain qualified offspring seeds and smaller offspring seeds; the qualified offspring seeds enter a seventh stage, the smaller offspring seeds are continuously fed with the feed of the sixth order, and the seventh stage is entered after the feed is fed for 2 to 3 days; wherein the standard of the screening is that the fish body is qualified when the fish body is more than or equal to 3.5cm, and the fish body is smaller when the fish body is less than 3.5 cm;
(8) Feeding slowly sinking domesticated feed with the protein mass percentage of the hard particles being more than or equal to 45% in the seventh stage, wherein the seventh stage is 2-3 days;
(9) Feeding eight-stage feed in the eighth stage for 2-3 days; wherein the eight-stage feed is formed by mixing 68-72 percent of slow-sinking domesticated feed with protein content of more than or equal to 45 percent by mass and 28-32 percent of floating No. 1 material of weever with protein content of 40-42 percent by mass;
(10) Feeding nine-stage feed in the ninth stage for 2-3 days; wherein the nine-stage feed is formed by mixing 38 to 42 percent of slow-sinking domesticated feed with protein content more than or equal to 45 percent and 58 to 62 percent of floating No. 1 material of weever with protein content of 40 to 42 percent by mass percentage;
(11) In the tenth stage, floating No. 1 weever with protein content of 40-42% is fed for 3-4 days to complete the domestication of the zander.
2. The simple method for rapidly acclimatizing zander as claimed in claim 1, wherein the anti-stress drug in the first step is stressor.
3. The simple method for rapidly acclimatizing zanthoxylum dissitum according to claim 1 or 2, wherein the temperature of the workshop water in the second step is controlled at 22 ℃.
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| CN107711616B (en) * | 2017-11-02 | 2020-06-19 | 福建天马科技集团股份有限公司 | Mandarin fish fingerling domestication method |
| CN107950438A (en) * | 2017-12-22 | 2018-04-24 | 安徽省农业科学院水产研究所 | A kind of quick feed acclimation method of Micropterus salmonoides |
| CN209489319U (en) * | 2018-12-25 | 2019-10-15 | 中国水产科学研究院黑龙江水产研究所 | Zander bait-laying device for fish |
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