JP2021517453A - How to promote the growth and development of purple sea cucumber and coloring of body color - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for promoting the growth and development of purple sea cucumber and coloring of body color. In the above method, a step of inducing spawning, artificially fertilizing, and incubating a purple sea cucumber, and feeding yeast to a culture stage of floating larvae, and adding a mixed solution of Faffia rhodozaima and a photosynthetic bacterium are added. Steps and the step of laying a disinfected purple corrugated sheet frame and culturing under conditions of light intensity 5-50 Lx and purple sea cucumber larvae when developing into the differentiation of the water tube system in the late stage of large ear cucumber larvae After adhering, the step of feeding artificial compound feed and Faffia rhodozaima to cultivate the sea cucumber to the juvenile sea cucumber, and the juvenile sea cucumber to the growth stage of the purple sea cucumber have a light intensity of 2000 to 2500 Lx and a light cycle of 14 to 12 L: 10 to 12 D. Includes the step of culturing under conditions. By culturing the seedling stage of purple sea cucumber by the method provided by the present invention, the growth and coloring of purple sea cucumber are remarkably promoted, the aquaculture cycle is shortened, and the selective breeding and industrialization process of purple sea cucumber is accelerated. [Selection diagram] None

Description

This application was submitted to the China Patent Office on March 4, 2019, requesting priority of the Chinese patent application with application number 201910159309.8, the title of the invention "Method for promoting growth and growth of purple sea cucumber and body color coloring". However, the entire contents are incorporated in this application by reference.

The present invention belongs to the technical field of sea cucumber culture, and specifically relates to a method for promoting the growth and growth of purple sea cucumber and the coloring of body color.

Sea cucumber is currently the highest output value of a single species in China, and research on its increased aquaculture technology can be traced back to the 1950s.Since 2003, the sea cucumber industry has expanded rapidly, and China Forming the fifth wave industry of marine aquaculture in Japan. According to the statistics of the 2018 China Fisheries Yearbook, the current aquaculture area of sea cucumbers in China is about 200,000 hectares, and the annual production is 220,000 tons. With the continued expansion of the caterpillar farming industry, germplasmic innovation has been increasingly appreciated by scientific research institutes and companies in China, and population breeding techniques, selection and selection of dominant traits. By continuously implementing breeding techniques, etc., we bred multiple new varieties with excellent economic characteristics and promoted the healthy and sustainable development of the breeding industry of Namako.

In the direction of selective breeding of new varieties of sea cucumber with a unique appearance, we are gradually forming varieties with many thorns, such as white and purple, which may be found in the market, of which the whole sea cucumber is purple. Is very rare in the natural world, and its artificially selected breeding varieties have very high market development value. During the development of purple sea cucumbers, the larvae undergo a special process of adhering metamorphosis and then gradually changing from colorless to purple, but nowadays the breeding and aquaculture of purple sea cucumbers is still basically that of common sea cucumbers. It is based on the custom of aquaculture production. In the auricular larval stage and the juvenile sea cucumber after the attachment metamorphosis, both are cultivated in the dark light in the room, and the feeding feed should be mainly the applied compound feed of the late juvenile sea cucumber gradually from the early yeast powder. The growth and development process of purple sea cucumbers cultured in this way is the same as that of general sea cucumbers, and the indicators such as the incidence of small auricular larvae and the rate of attachment transformation are higher than those of general sea cucumbers. It is low, and the timing of growth and coloring is also delayed compared to general sea cucumbers.

In order to solve the above restrictions and promote the development of breeding and breeding techniques for purple sea cucumber, the present invention provides a method for promoting the growth and coloring of purple sea cucumber, and significantly promotes the growth and coloring of purple sea cucumber. It can shorten the cultivation cycle and accelerate the selective breeding and industrialization process of purple sea cucumber.

The method for promoting the growth and growth of purple sea cucumber and the coloring of body color provided by the present invention includes the following steps.
1) Induce the spawning of male and female purple sea cucumbers and in vitro fertilize the obtained sperms and eggs to obtain fertilized eggs.
2) The fertilized egg is hatched at 21.4-22.6 ° C. and grown in the floating larval stage.
3) In the floating larva stage, small auricle larvae are cultured in each pond to large auricle larvae, and during the culture process, a mixed solution of Faffia rhodozyma and photosynthetic bacteria is added to the water area of the culture pond.
4) When the large auricular larva develops into the differentiation of the water pipe system in the later stage, a disinfected purple corrugated plate frame is laid as an adhesion base, and then the adhesion transformation phase is entered, and dimming culture is performed during the adhesion transformation phase. The light intensity during the dimming culture process is 5 to 50 Lx.
5) After the purple sea cucumber larvae are attached, the artificial compound feed is fed and the sea cucumber grows in culture as a juvenile sea cucumber.
The artificial formula feed includes juvenile sea cucumber feed, kelp powder, spirulina powder and Faffia rodzaima. The mass ratio of the juvenile cattle feed, kelp powder and spirulina powder is 6: 3: 1, the amount of Faffia rodzaima added to the artificial formula feed per kilogram is 15 to 20 ml, and the viable bacteria of the Faffia rodzaima. concentration is ^{(6~8) × 10 8 CFU /} ml.
6) The juvenile sea cucumber is cultivated until the growth stage of the purple sea cucumber.
During the juvenile sea cucumber culture process, the light intensity is 2000-2500Lx and the photoperiod is 12L-14L: 10D-12D.
During the process of culturing juvenile sea cucumber, the feed fed contained juvenile sea cucumber feed and Faffia rodzaima, and the volume ratio of the Faffia rodzaima to the mass ratio of the juvenile sea cucumber feed was 15 to 20 ml: 1 kg. the viable cell concentration is ^{(6~8) × 10 8 CFU /} ml.

Preferably, the daily feed mass of the artificial formula feed according to step 5) is 0.5% to 3% of the body weight of the sea cucumber seedling.
Preferably, the light intensity according to step 6) is 2200 to 2400Lx, and the light period is 13L: 11D.
Preferably, the concentration of the Faffia rhodozaima and photosynthetic bacterium mixture according to step 3) is 2 to 4 ml · m ^-3 · d ^-1 .
The Phaffia rhodozyma and valid viable cell count of photosynthetic bacteria mixture ¹⁰ 9 CFU / ml or more,
The colony ratio of Faffia rhodozyma and photosynthetic bacteria in the mixture of Faffia rhodozyma and photosynthetic bacteria is 3: 5.

Preferably, during the culturing process of step 3), the feed is a substitute feed.
The substitute bait contains apple dry yeast and marine red yeast.
The viable cell ratio of apple dry yeast and marine red yeast in the diet is 2: 1.
Preferably, the feeding amount of the substitute feed according to step 3) is determined according to the type of auricular larva in the floating phase.
When feeding small auricular larvae, the feed amount of the substitute feed is 1.0 × 10 ⁴ cells · ml ^-1 · d ^-1 .
When feeding medium-sized auricular larvae, the feed amount of the substitute feed is 2.0 × 10 ⁴ cells · ml ^-1 · d ^-1 .
When feeding large auricular larvae, the feed amount of the substitute feed is 3.0 × 10 ⁴ cells · ml ^-1 · d ^-1 .
Preferably, in the culturing process of step 3), the light intensity is 1000 to 2000 Lx and the light period is 10 L: 14D.
Preferably, during the culture process of step 3), the culture density of the small auricular larvae is 0.12 to 0.15 cells / ml.
Preferably, the egg-laying temperature in step 1) is 19.8 to 21 ° C., and the egg-picking density is 10 to 20 eggs / ml.
Preferably, the male purple sea cucumber or the female purple sea cucumber in step 1) weighs 250 g / animal or more, and is a purple sea cucumber parent fish that grows and feeds well, grows well, and has strong vitality.

The method for promoting the growth and growth of purple larvae and the coloring of body color provided by the present invention is light control control during the adhesion transformation phase, specifically, dimming culture at the time of entering the adhesion transformation phase, and a low light environment of 5 to 50 Lx. It is advantageous to effectively improve the adhesion transformation rate of larvae by maintaining the light intensity in. Experiments have demonstrated that the adherence transformation rate of purple sea cucumber was increased by 17.9% to 19.6% using dimmed culture compared to the control group. The present invention uses an artificial formula feed as a transitional feed after the larvae have adhered and metamorphosed, and the artificial formula feed includes a juvenile sea cucumber feed, kelp powder, spirulina powder and Faffia rodzaima. Faffia rodzaima can increase the specific growth rate and non-specific immunoenzyme activity of juvenile sea cucumbers and promote their growth. Kelp powder contains sugars, minerals, vitamins, free amino acids, fatty acids, natural pigments and unknown growth factors (UCFs) to improve feed efficiency and promote rapid growth and weight gain of sea cucumber larvae. can. Spirulina powder improves the immunity of sea cucumber larvae. The present invention further increases the growth rate of juvenile sea cucumbers by optical control management and feeding of juvenile sea cucumbers. Traditional general juvenile sea cucumber routine management is still dominated by dark light, and the diet is a commercial or homegrown diet primarily composed of algae powder. The juvenile sea cucumber feed of the present invention is to add Faffia rhodozaima at 15 to 20 ml / kg, and Faffia rhodozaima increases the specific growth rate and non-specific immunoenzyme activity of juvenile sea cucumber to promote growth. Can be promoted. Reasonable light intensity and photoperiod can promote the growth of juvenile sea cucumbers. The light intensity is 2000-2500Lx and the light period is 14-12L: 10-12D. Compared with the control group, the growth rate of juvenile sea cucumber can be effectively increased by 24.4% to 29.3% by using the method for culturing juvenile sea cucumber provided by the present invention. As can be seen from the above, the present invention achieves the object of promoting the growth of purple sea cucumber by light control control during the adhesion metamorphosis period and light control control and feeding of juvenile sea cucumber.
At the same time, in the means provided by the present invention, after the purple sea cucumber larvae are attached, an artificial formula feed is fed, and the light intensity of the juvenile sea cucumber is controlled to 2000 to 2500 Lx and the photoperiod is controlled to 12 L: 12D to 14 L: 10D. When developing into the differentiation of the water pipe system in the later stages of large auricular larvae, a disinfected purple corrugated sheet frame is pre-laid as an attachment base. The body color of aquatic animals is influenced by factors such as cytochrome distribution, pigment synthesis in vivo, physiological conditions and environment. The content of melanocytes in the pigment cells on the body surface of purple sea cucumber is higher than that of general sea cucumber, white sea cucumber, red sea cucumber and the like. The present invention accelerates the coloring process of purple sea cucumber by adding ingredients of feed, light control and environment setting, respectively. Among them, the added Faffia rhodozyma can produce astaxanthin, has an excellent pigmentation effect, and can promote the growth of animals. The added photosynthetic bacteria can be a microbial natural colorant. Kelp powder is rich in tyrosinase and minerals, of which tyrosinase can promote melanin synthesis in sea cucumber. Spirulina powder contains β-carotene and can improve the coloring effect. Moderate light intensity and photoperiod range can stimulate the growth of pigment cells and accelerate color development. The attachment base of the purple corrugated iron frame can be used as an environmental color that promotes the formation of body color of purple sea cucumber larvae. In the experiments, the method provided by the present invention can promote pre-coloring and shorten the coloring time, and the purple coloring start time of purple sea cucumber in boyhood averaged 6.4d to 7d as compared with the control group. It advances by .2d and shows that the coloring completion time is shortened by 5.2d to 8.4d on average.
At the same time, the methods provided by the present invention are further characterized by being environmentally friendly, healthy and cost reasonable. The additive components used in the present invention are all high-quality natural colorants, have no components such as artificial colorants, and have simple and easy-to-operate optical control equipment. The added component can promote the coloring of purple sea cucumber larvae, promote the growth, and improve the immunity. Of these, kelp powder and spirulina powder are also common components of compound feed, and by changing the compounding ratio, they play a role in promoting growth and coloring, and cost is effectively controlled.
In addition, the present invention defines a method for culturing purple sea cucumbers in the floating auricular larval period, including feeding, feeding, photoperiod control and photoperiod. In the present invention, the light intensity is controlled to 1000 to 2000 Lx and the light period is controlled to 10 L: 14D during the floating auricular larval stage. At the same time, add Faffia rodzaima and photosynthetic bacteria to the diet. In water ecosystems, light is an important ecological factor that can directly or indirectly affect behaviors such as feeding and growth of aquatic animals such as sea cucumbers. The photoperiod can directly affect behaviors such as circadian rhythms, migration and clustering in aquatic animals, and too high or too low light intensity directly affects the growth and survival of sea cucumber larvae. Microorganisms such as photosynthetic bacteria can regulate the water quality of the water area for raising seedlings and can also be used for feeding larvae. Faffia rodzaima can increase the specific growth rate and non-specific immunoenzyme activity of larvae, promote growth and improve survival. In the experiments provided by the present invention, the incidence of small auricular larvae in the floating phase was effectively improved by 7.5% to 8.9%, and the incidence of barrel-shaped larvae was 13.2% to 15%. It shows that it can be improved by 0.4%.

The method for promoting the growth and growth of purple sea cucumber and the coloring of body color provided by the present invention includes the following steps.
1) Induce the spawning of male and female purple sea cucumbers and in vitro fertilize the obtained sperms and eggs to obtain fertilized eggs.
2) The fertilized egg is hatched at 21.4-22.6 ° C. and grown in the floating larval stage.
3) In the floating larva stage, small auricle larvae are cultured in each pond to large auricle larvae, and during the culture process, a mixed solution of Faffia rhodozyma and photosynthetic bacteria is added to the water area of the culture pond.
4) When the large auricular larva develops into the differentiation of the water pipe system in the late stage, a disinfected purple corrugated plate frame is laid as an adhesion base, the adhesion transformation phase is entered, and dimming culture is used in the adhesion transformation phase. The light intensity during the dimming culture process is 5 to 50 Lx.
5) After the purple sea cucumber larvae are attached, the artificial compound feed is fed and the sea cucumbers are cultured and grown in juveniles.
The artificial formula feed includes juvenile sea cucumber feed, kelp powder, spirulina powder and Faffia rodzaima. The mass ratio of the juvenile cattle feed, kelp powder and spirulina powder is 6: 3: 1, the amount of Faffia rodzaima added to the artificial formula feed per kilogram is 15 to 20 ml, and the viable bacteria of the Faffia rodzaima. concentration is ^{(6~8) × 10 8 CFU /} ml.
6) The juvenile sea cucumber is cultivated until the growth stage of the purple sea cucumber.
During the juvenile sea cucumber culture process, the light intensity is 2000-2500Lx and the photoperiod is 14L-12L: 10D-12D.
During the process of culturing juvenile sea cucumber, the feed fed contained juvenile sea cucumber feed and Faffia rodzaima, and the ratio of the volume of the Faffia rodzaima to the mass of the juvenile sea cucumber feed was 15 to 20 ml: 1 kg. - viable cell concentration of rhodozyma is ^{(6~8) × 10 8 CFU /} ml.

The present invention induces the spawning of male and female purple sea cucumbers and in vitro fertilizes the obtained sperms and eggs to obtain fertilized eggs.
The present invention has no particular limitation on the source of the male and female purple sea cucumbers, and male and female purple sea cucumbers well known in the art are used. In the examples of the present invention, the male and female sea cucumbers were purchased from Smokedai Kaimen Seedling Co., Ltd.
In the present invention, the male purple sea cucumber or the female purple sea cucumber is preferably a purple sea cucumber parent fish weighing 250 g / animal or more, having good growth and feeding, good growth, and strong vitality. The method for inducing spawning is preferably a method of stimulating sea cucumber spawning by a shade-dry plus running water stimulation method, which is a method in which all the water is discharged from a pond in which the selected sea cucumber parent fish is temporarily cultivated and the water stream is re-entered after a certain period of time. Induce. The temperature of female purple sea cucumber spawning is preferably 19.8 to 21 ° C, more preferably 20 ° C. The density of eggs taken is preferably 10 to 20 eggs / ml, more preferably 12 to 18 eggs / ml, and most preferably 15 eggs / ml. The density of the sperms is preferably 30 to 50 sperms / ml, more preferably 45 sperms / ml. At the time of in vitro fertilization, the ratio of the number of eggs to the number of sperms is preferably 1: 3.
In the present invention, after a fertilized egg is obtained, the fertilized egg is hatched at 21.4-22.6 ° C. and grown in the floating larval stage.
In the present invention, the hatching temperature is preferably 21 ° C. During the hatching process, preferably, a slight swelling is maintained to evenly disperse the fertilized egg, which is advantageous in improving the hatchability.
Upon entering the floating larva stage, the present invention cultures small auricular larvae to large auricular larvae in their respective ponds.

In the present invention, a mixed solution of Faffia rhodozaima and photosynthetic bacteria is preferably placed in the water area of the culture pond during the culture process. The concentration of the Phaffia rhodozyma and photosynthetic bacteria mixture, preferably 2-4 ml ^{· m} -3 · ^{d -1,} effective viable count of said Phaffia rhodozyma and photosynthetic bacteria mixture, preferably ¹⁰ 9 CFU / The colony ratio of Faffia rhodozyma and photosynthetic bacteria in the mixed solution of Faffia rhodozyma and photosynthetic bacteria in ml or more is preferably 3: 5. In the present invention, there are no particular restrictions on the type and source of the strains of Faffia rhodozyma and photosynthetic bacteria, and Faffia rhodozyma and photosynthetic bacteria well known in the art may be used. In the embodiment of the present invention, the Faffia rodzaima was purchased from Shaanxi Kinjun Biotechnology Co., Ltd. The photosynthetic bacterium was purchased from Favor Group Co., Ltd.
In the present invention, the feed is preferably a substitute feed during the culturing process. The substitute bait preferably comprises apple dry yeast and marine red yeast. The viable cell ratio of apple dry yeast to marine red yeast is preferably 4 to 8: 3, and more preferably 2: 1. In the present invention, there are no particular restrictions on the types and sources of the strains of apple dry yeast and marine red yeast, and apple dry yeast and marine red yeast well known in the art may be used. The feeding amount of the substitute feed is determined according to the type of auricular larva in the floating phase. When feeding small auricular larvae, the feeding amount of the substitute food is 1.0 × 10 ⁴ cells ・ ml ^-1・ d ^-1 , and when feeding medium-sized auricular larvae, feeding of the substitute food The amount is 2.0 × 10 ⁴ cells ・ ml ^-1・ d ^-1 , and when feeding large auricular larvae, the amount of the substitute food is 3.0 × 10 ⁴ cells ・ ml ^-1・ d ^-1 . be.
In the present invention, light intensity and photoperiod are controlled during the culture process. The light intensity is preferably 1000 to 2000 Lx, more preferably 1200 to 1800 Lx, and even more preferably 1500 Lx. The photoperiod is preferably 10L: 14D.
In the present invention, the density of the culture is controlled during the culture process. The culture density of the small auricular larvae is preferably 0.12 to 0.15 pieces / ml, more preferably 0.13 pieces / ml.
When developing into the differentiation of the water pipe system in the late stage of large auricular larvae, in the present invention, a disinfected purple corrugated plate frame is laid as an adhesion base, and the adhesion transformation phase is entered, and dimming occurs during the adhesion transformation phase. Using culture, the light intensity during the dimming culture process is 5-50 Lx.

In the present invention, the number of purple corrugated iron frames is preferably 5 to 8 / m ³ / unit water body. The light intensity during the dimming culture process is preferably 10 to 40 Lx, more preferably 20 to 30 Lx, and most preferably 25 Lx. A low light environment can effectively improve the rate of attachment transformation of sea cucumber larvae.
After the purple sea cucumber larvae are attached, the artificial compound feed is fed to grow the sea cucumbers in a juvenile age. The artificial formula feed includes juvenile sea cucumber feed, kelp powder, spirulina powder and Faffia rodzaima. The mass ratio of the juvenile cattle feed, kelp powder and spirulina powder is 6: 3: 1, the amount of Faffia rodzaima added to the artificial formula feed per kilogram is 15 to 20 ml, and the viable bacteria of the Faffia rodzaima. concentration is ^{(6~8) × 10 8 CFU /} ml.
In the present invention, there is no particular limitation on the source of the feed, kelp powder, and spirulina powder of the juvenile sea cucumber, and raw materials well known in the art may be used. The daily feeding mass of the artificial formula feed is preferably 0.5% to 3% of the body weight of the sea cucumber seedling, more preferably 1% to 2.5% of the body weight of the sea cucumber seedling, and most preferably 1.5 to 2.0%. be. The feed amount of the artificial formula feed is appropriately adjusted according to the feeding situation. Traditional general juvenile sea cucumber routine management is still dominated by dark light, and the diet is a commercial or homegrown diet primarily composed of algae powder. In the present invention, Faffia rodzaima was added to the fed compound feed. The light intensity is controlled to 2000-2500Lx and the photoperiod is controlled to 12L: 12D-14L: 10D. Faffia rodzaima can increase the specific growth rate and non-specific immunoenzyme activity of juvenile sea cucumbers and promote their growth. Reasonable light intensity and photoperiod can promote the growth of juvenile sea cucumbers.
In the present invention, the juvenile sea cucumber is cultured until the growth stage of the purple sea cucumber. During the juvenile sea cucumber culture process, the light intensity is 2000-2500Lx, the photoperiod is 12L-14L: 10D-12D, and the culture density is 0.12-0.18 cells / ml. During the process of culturing juvenile sea cucumber, the feed fed contained juvenile sea cucumber feed and Faffia rodzaima, and the volume ratio of the Faffia rodzaima to the mass ratio of the juvenile sea cucumber feed was 15 to 20 ml: 1 kg. the viable cell concentration is ^{(6~8) × 10 8 CFU /} ml.
In the present invention, the light intensity is preferably 2200 to 2400 Lx, more preferably 2300 Lx. The photoperiod is preferably 13L: 11D. The culture density is preferably 0.15 cells / ml. The mass ratio of the volume of the fafia rodzaima to the mass ratio of the juvenile sea cucumber feed is preferably 18 ml: 1 kg. The culture time of the juvenile sea cucumber is preferably 130 to 145 d.

The methods for promoting the growth and growth of purple sea cucumber and the coloring of body color provided by the present invention will be described in detail below with reference to Examples, but they cannot be understood as restrictions on the scope of protection of the present invention.

In May 2016, a comparative experiment with purple sea cucumber seedlings was conducted at a seedling raising company in Yantai City, Shandong Province. On May 3, a general sea cucumber parent fish that was a control group with a purple sea cucumber parent fish that weighed more than 260 g / animal, grew normally, and had strong vitality was selected, and the sea cucumber was stimulated by shade and running water. The spawning is induced by the method, the spawning water temperature is 20 ° C., the egg-taking density is controlled to 20 eggs / ml, and the temperature of the pond water is controlled to 22 ° C. for hatching, and the fertilized eggs are uniform during the hatching period. Slight swelling was maintained to distribute to.
General auricular larvae, which were a control group with purple larvae, were cultivated in each pond at a density of about 0.15 cells / ml when hatched to small auricular larvae, and substituted for apple dry yeast and marine red yeast. Feeding, daily feeding is small auricle larva 1.0 × 10 ⁴ cell / ml, medium size auricle larva 2.0 × 10 ⁴ cell / ml, large auricle larva 3.0 × It was 10 ⁴ cell / ml. At the same time, purple Phaffia rhodozyma and photosynthetic bacteria mixture daily 2 ml / m ³ in the culture waters sea cucumber floating larvae (live bacteria ratio of Phaffia rhodozyma and photosynthetic bacteria 3: 5) was added, the effective number of viable cells were ¹⁰ 9 CFU / ml or more. The light conditions for culturing purple caterpillar larvae were controlled by indoor white light illumination at the culture site, and the light intensity was controlled to 1500 Lx and the photoperiod was controlled to 10 L: 14D using a Fluke 941 photometer. Common sea cucumber larvae, which were the control group, were cultured in conventional dark light (dark light intensity was 0, and the diet was apple dry yeast).
When purple sea cucumbers developed into the differentiation of the water pipe system in the late stage of large auricular larvae, a disinfected purple corrugated sheet frame was pre-laid as an attachment base. In the general sea cucumber, which was the control group, a conventional transparent corrugated iron plate was laid as an adhesion base. When the purple sea cucumber larva entered the adherent metamorphosis phase, it was dimmed and cultured, and the light intensity was controlled to 20 Lx. General sea cucumber larvae, which were the control group, were cultured in conventional dark light (dark light intensity was 0).
After the sea cucumber larvae had adhered, the feed was gradually shifting from yeast to artificial formula feed. At the same time, the artificial formula feed of purple namako is a commercially available boyhood namako feed to which kelp powder and spirulina powder are added, and the added mass ratio is commercially available feed: kelp powder: spirulina powder = 6: 3: 1. 18 ml / kg of Faffia rodzaima was added to the formula feed. The amount of feed fed to the general sea cucumber, which was the control group, without feeding the added component was about 2.5% of the body weight of the sea cucumber seedling, and was appropriately adjusted according to the feeding situation.
By adjusting the indoor light at the site, the light intensity and photoperiod of the juvenile purple sea cucumber culture stage after adhesion metamorphosis were controlled. The light intensity was controlled to 2300Lx and the light period was controlled to 13L: 11D. General sea cucumber larvae, which were the control group, were cultured in conventional dark light (dark light intensity was 0), and the fed feed was a commercially available feed, of which algae powder was the main component.

The test results after culturing 140d are shown in Tables 1 to 3.

As can be seen from the above results, the purple sea cucumbers cultured by this method have a 4.9% improvement in the incidence of auricular larvae, which is smaller than that of general sea cucumbers, and a 6.5% increase in the incidence of barrel-shaped larvae. Metamorphosis rate increased by 6.7%, daily growth of 3-month-old boyhood sea cucumber height increased by 16.6%, daily growth of weight increased by 16.0%, and coloring start time of purple sea cucumber is common. It was 3d faster on average than sea cucumber, and the coloring completion time was 4.5d shorter on average.

In April 2017, a comparative experiment with sea cucumber seedling raising was conducted at a sea cucumber seedling raising company in Yantai City, Shandong Province. On April 28, we selected a purple sea cucumber parent fish that weighed more than 250 g / animal, grew normally, and had strong vitality, and a purple sea cucumber parent fish that was a control group. The spawning is induced, the spawning water temperature is 19.8 ° C, the egg-picking density is controlled to 15 eggs / ml, and the temperature of the pond water is raised to 22.1 ° C for hatching, and the fertilized eggs are hatched during the hatching period. A slight swelling was maintained for uniform distribution.
Purple auricular larvae, which were the experimental group and the control group, were cultivated in each pond at a density of about 0.15 cells / ml when even small auricular larvae were hatched, and substitute diets such as apple dry yeast and marine red yeast were used. Feeding, daily feeding amount is small pinna larva 1.0 × 10 ⁴ cell / ml, medium size pinna larva 2.0 × 10 ⁴ cell / ml, large pinna larva 3.0 × 10 ⁴ It was cell / ml. At the same time, was added a mixture of Phaffia rhodozyma and photosynthetic bacteria daily 3 ml / m ³ in the culture waters purple sea cucumber floating larvae were experimental groups, the effective number of viable cells were 10 9 ^CFU / ml or more .. The light conditions for culturing purple caterpillar larvae were controlled by indoor white light illumination at the culture site, and the light intensity was controlled to 1000 Lx and the light period was controlled to 10 L: 14D using a Victor 1010A photometer. The control group, purple sea cucumber larvae, was cultured in conventional dark light.
When the purple sea cucumber, which was the experimental group, developed into the differentiation of the water pipe system in the late stage of large auricular larvae, a disinfected purple corrugated sheet frame was laid in advance as an attachment base. In the control group, purple sea cucumber, a conventional transparent corrugated iron plate was laid as an adhesion base. When the purple sea cucumber larvae in the experimental group entered the adhering metamorphosis phase, they were dimmed and cultured, and the light intensity was controlled to 50 Lx. The control group, purple sea cucumber larvae, was cultured in conventional dark light.
After the sea cucumber larvae had adhered, the feed was gradually shifting from yeast to artificial formula feed. At the same time, the artificial formula feed of purple namako, which is the experimental group, is made by adding kelp powder and spirulina powder to the commercially available boyhood namako feed, and the added mass ratio is the commercially available feed: kelp powder: spirulina powder = 6. : 3: 1 and 18 ml / kg of Faffia rodzaima was added to the formula feed. The ingredients added to the control group, purple sea cucumber, were not fed. The feed amount was about 2% of the body weight of the sea cucumber seedling, and was appropriately adjusted according to the feeding situation.
By adjusting the indoor light at the site, the light intensity and photoperiod of the juvenile purple sea cucumber culture stage, which was the experimental group after the adhesion metamorphosis, were controlled. The light intensity was controlled to 2000 Lx and the light period was controlled to 12 L: 12D. The control group, purple sea cucumber larvae, was cultured in conventional dark light.

The test results after culturing 140d are shown in Tables 4 to 6.

As can be seen from the above results, the purple sea cucumbers cultured by this method have an increased incidence of auricular larvae smaller than those of the purple sea cucumbers not cultured by this method by 8.9%, and the incidence of barrel-shaped larvae is 15.4%. Improved, adherent transformation rate improved by 17.9%, 3 month old juvenile sea cucumber height daily growth increased by 25.1%, daily weight growth increased by 29.3%, purple sea cucumber started coloring The time was shortened by an average of 6.4 d, and the coloring completion time was shortened by an average of 8.4 d.

In May 2018, a comparative experiment with purple sea cucumber seedlings was conducted at the Qingdao National Marine Science Research Center Aquatic Seedling Industrialization Base. On May 2, we selected a purple sea cucumber parent fish that weighed more than 300 g / animal, grew normally, and had strong vitality, and a purple sea cucumber parent fish that was a control group. The spawning is induced, the spawning water temperature is 20.2 ° C., the egg-taking density is controlled to 15 eggs / ml, and the temperature of the pond water is controlled to 22.4 ° C. for hatching, and fertilized eggs during the hatching period. A slight expansion was maintained to evenly distribute the eggs.
Purple auricular larvae, which were the experimental group and the control group, were cultivated in each pond at a density of about 0.15 cells / ml when even small auricular larvae were hatched, and substitute diets such as apple dry yeast and marine red yeast were used. Feeding, daily feeding amount is small pinna larva 1.0 × 10 ⁴ cell / ml, medium size pinna larva 2.0 × 10 ⁴ cell / ml, large pinna larva 3.0 × 10 ⁴ It was cell / ml. At the same time, was added a mixture of Phaffia rhodozyma and photosynthetic bacteria daily 3 ml / m ³ in the culture waters purple sea cucumber floating larvae were experimental groups, the effective number of viable cells were 10 9 ^CFU / ml or more .. The light conditions for culturing purple sea cucumber larvae were controlled by adjusting the shade at the top of the site, and the light intensity was controlled to 2000 Lx and the photoperiod to 10 L: 14D using a Fluke 941 photometer. The control group, purple sea cucumber larvae, was cultured in conventional dark light.
When the purple sea cucumber, which was the experimental group, developed into the differentiation of the water pipe system in the late stage of large auricular larvae, a disinfected purple corrugated sheet frame was laid in advance as an attachment base. In the control group, purple sea cucumber, a conventional transparent corrugated iron plate was laid as an adhesion base. When the purple sea cucumber larvae in the experimental group entered the adherent metamorphosis phase, they were dimly cultured and the light intensity was controlled to 30 Lx. The control group, purple sea cucumber larvae, was cultured in conventional dark light.
After the sea cucumber larvae had adhered, the feed was gradually shifting from yeast to artificial formula feed. At the same time, the artificial formula feed of purple namako, which was the experimental group, was made by adding kelp powder and spirulina powder to the commercially available boyhood namako feed, and the added mass ratio was the commercially available feed: kelp powder: spirulina powder = 20 ml / kg of Faffia rodzaima was added to the formula feed at a ratio of 6: 3: 1. The ingredients added to the control group, purple sea cucumber, were not fed. The feed amount was about 3% of the body weight of the sea cucumber seedling, and was appropriately adjusted according to the feeding situation.
By adjusting the shade at the top of the site, the light intensity and photoperiod of the juvenile purple sea cucumber culture stage, which was the experimental group after adhesion metamorphosis, were controlled. The light intensity was controlled to 2500Lx and the photoperiod was controlled to 14L: 10D. The control group, purple sea cucumber larvae, was cultured in conventional dark light.

The test results after culturing 140d are shown in Tables 7-9.

As can be seen from the above results, the purple sea cucumbers cultured by this method have a 7.5% improvement in the incidence of small auricular larvae and the incidence of barrel-shaped larvae 13.2% compared to the purple sea cucumbers not cultured by this method. Improved, adherent transformation rate improved by 19.6%, 3 month old juvenile sea cucumber height daily growth increased by 24.5%, weight daily growth increased by 24.4%, purple sea cucumber started coloring The time was shortened by an average of 7.2d, and the coloring completion time was shortened by an average of 5.2d.

The above description of the examples is merely a proposal to understand the method of the present invention and its core ideas. As should be pointed out, those skilled in the art may make some improvements and modifications to the present invention, provided that they do not deviate from the principles of the present invention. It is included in the scope of protection of the claims of the invention. Those skilled in the art will appreciate a plurality of modifications to these embodiments, and the general principles defined herein are in other embodiments without departing from the spirit or scope of the invention. It can be realized. Thereby, the invention is not limited to these examples set forth herein and belongs to the broadest scope consistent with the principles and novel features disclosed herein.

Claims (10)

A method for promoting the growth and development of purple sea cucumber and coloring of body color, which is characterized by including the following steps.
1) Induce the spawning of male and female purple sea cucumbers and in vitro fertilize the obtained sperms and eggs to obtain fertilized eggs.
2) The fertilized egg is hatched at 21.4-22.6 ° C. and grown in the floating larval stage.
3) Cultivate small auricle larvae to large auricle larvae in each pond during the floating larva stage, and add a mixture of Faffia rhodozaima and photosynthetic bacteria to the water area of the culture pond during the culture process.
4) When the large auricular larva develops into the differentiation of the water pipe system in the later stage, a disinfected purple corrugated plate frame is laid as an adhesion base, the adhesion transformation phase is entered, and dimming culture is used in the adhesion transformation phase. The light intensity during the dimming culture process is 5 to 50 Lx.
5) After the purple sea cucumber larvae have adhered, feed the artificial formula feed and cultivate to the juvenile sea cucumber.
The artificial formula feed includes juvenile sea cucumber feed, kelp powder, spirulina powder and Faffia rodzaima. The mass ratio of the juvenile cattle feed, kelp powder and spirulina powder is 6: 3: 1, the amount of Faffia rodzaima added to the artificial formula feed per kilogram is 15 to 20 ml, and the viable bacteria of the Faffia rodzaima. concentration is ^{(6~8) × 10 8 CFU /} ml.
6) The juvenile sea cucumber is cultivated until the growth stage of the purple sea cucumber.
During the juvenile sea cucumber culture process, the light intensity is 2000-2500Lx and the photoperiod is 12L-14L: 10D-12D.
During the process of culturing juvenile sea cucumber, the feed fed contained juvenile sea cucumber feed and Faffia rodzaima, and the mass ratio of the volume of the Faffia rodzaima to the juvenile sea cucumber feed was 15 to 20 ml: 1 kg. viable cell concentration of rhodozyma is ^{(6~8) × 10 8 CFU /} ml. The method according to claim 1, wherein the daily feeding mass of the artificial formula feed according to step 5) is 0.5% to 3% of the body weight of the sea cucumber seedling. The method according to claim 1, wherein the light intensity according to step 6) is 2200 to 2400 Lx, and the light period is 13 L: 11D. The concentration of the mixture of Faffia rhodozaima and photosynthetic bacteria described in step 3) is 2 to 4 ml · m ^-3 · d ^-1 ,
The Phaffia rhodozyma and valid viable cell count of the mixture of photosynthetic bacteria ¹⁰ 9 CFU / ml or more,
The method according to claim 1, wherein the colony ratio of Faffia rodzaima and photosynthetic bacteria in the mixed solution of Faffia rodzaima and photosynthetic bacteria is 3: 5. During the culturing process of step 3), the feed is a substitute feed
The substitute bait contains apple dry yeast and marine red yeast.
The method according to claim 1, wherein the viable cell ratio of apple dry yeast and marine red yeast is 2: 1. The feeding amount of the substitute feed described in step 3) is determined according to the type of auricular larva in the floating phase.
When feeding small auricular larvae, the feed amount of the substitute feed is 1.0 × 10 ⁴ cells · ml ^-1 · d ^-1 .
When feeding medium-sized auricular larvae, the feed amount of the substitute feed is 2.0 × 10 ⁴ cells · ml ^-1 · d ^-1 .
The method according to claim 5, wherein when feeding a large auricular larva, the feeding amount of the substitute feed is 3.0 × 10 ⁴ cells · ml ^-1 · d ^-1. The method according to claim 1, wherein in the culturing process of step 3), the light intensity is 1000 to 2000 Lx and the light cycle is 10 L: 14D. The method according to claim 1, wherein during the culturing process of step 3), the culturing density of the small auricular larvae is 0.12 to 0.15 larvae / ml. The method according to claim 1, wherein the egg-laying temperature in step 1) is 19.8 to 21 ° C., and the egg-picking density is 10 to 20 eggs / ml. Any of claims 1 to 9, wherein the male purple sea cucumber or the female purple sea cucumber of step 1) is 250 g / animal or more, and is a purple sea cucumber parent fish that grows and feeds well, grows well, and has strong vitality. The method described in paragraph 1.