CN103141447B - A method for artificially cultivating crickets without soil temperature control - Google Patents

Abstract

The invention provides a method for artificially cultivating crickets without soil temperature control, including freezing seed treatment of fertilized seeds of wild crickets, constant temperature cultivation of fertilized seeds of wild crickets, variable temperature cultivation of 1-4 molting nymphs of crickets, 5-6 molting nymphs of crickets Cylinder culture of nymphs. The inventive method is simple in process, simple in equipment and low in cost, adopts a completely soilless cricket artificial cultivation method, has obvious all-weather anti-seasonality, avoids various soil pathogenic factors, and has high yield; Artificial cultivation of crickets is more stable and accurate, and the cultivated crickets are large in size and good in strain.

Description

A method for artificially cultivating crickets without soil temperature control

technical field

The invention belongs to the technical field of insect artificial propagation, in particular to a method for artificially cultivating crickets in a soilless temperature-controlled environment.

Background technique

Crickets, also known as Chinese crickets, are insects of the order Orthoptera. Fighting crickets is a traditional cultural and recreational activity in China. High-grade crickets have high economic value. However, the lifespan of crickets in the natural environment is only about 100 days, and the adult time is also limited to autumn. At the same time, resources in traditional wild cricket producing areas such as Shandong are on the verge of exhaustion. How to artificially cultivate crickets to protect natural populations and inherit traditional cricket culture is a modern A subject of long-term research.

Since the 1980s, experimental research on artificial cultivation of crickets has gradually emerged. In general, there are roughly two cultivation directions: one is to sow seeds outdoors for natural cultivation, and to choose suitable field enclosures in winter, and to spread cricket seeds in shallow soil layers to make them grow naturally. Growth; The second is indoor artificial cultivation, selecting indoor environment constant temperature to cultivate crickets.

However, the crickets cultivated by existing artificial methods have low yield, small size and low strain, and their fighting ability is far inferior to that of wild crickets. The main technical defects are:

1. Low yield. Regardless of the cultivation method, the soil environment is adopted, so that a large number of germs and viruses in the soil can grow and reproduce rapidly in a high-temperature environment, resulting in a higher mortality rate of crickets.

2. Strain is low. Therefore, wild cricket seeds experience the low temperature environment throughout the winter in the natural environment in the wild, which plays a very important role in the precipitation of mitochondria and strain stability. However, the existing artificial cultivation methods lack the key step of simulating the natural hatching process of crickets - freezing seeds. Therefore, the artificially cultivated cricket strains are lower.

3. Small in size and low in strain. Since the whole process of cultivation is at natural temperature or artificial constant temperature, it lacks the temperature and humidity environment conditions suitable for the natural development characteristics of crickets. The whole process from the hatching of crickets seeds to the molting adults of the 7th instar lacks precise temperature and humidity control. This physical environment is not suitable. The growth and development needs of crickets lead to the small size and lower lines of the artificially cultivated crickets.

Contents of the invention

Purpose of the invention: the purpose of the invention is to provide a method for artificially cultivating crickets without soil temperature control with high yield, large cricket size and high strain.

Technical solution: A method for artificially cultivating crickets without soil temperature control provided by the invention comprises the following steps:

(1) Freeze seed treatment of fertilized seeds of wild crickets: mix fertilized seeds of wild crickets with dry sand and place them at a temperature of 2-10°C for more than 100 days;

(2) Constant temperature cultivation of fertilized seeds of wild crickets: After the mixture of fertilized seeds of wild crickets treated with frozen seeds and dry sand is cultivated at natural temperature for 1-2 days, they are cultured in a sterilized cultivation tank at constant temperature and humidity for 6-7 days. days, the culture conditions are: temperature 25-30 ℃, humidity 80-90%;

(3) Varying temperature cultivation of cricket 1-4 moulting nymphs: set 2-3 layers of inclined bridges in the cultivation tank as the activity site for cricket nymphs of all ages, and cultivate the fertilized seeds of wild crickets cultivated at constant temperature in a day and night temperature-changing environment for 40 days. -45 days, culture conditions are: daytime temperature 25-28°C, humidity 30-50%, night temperature 30-32°C, humidity 80-90%, feed includes prawn breeding feed, corn, soybean skin and cicada slough mixture and cabbage leaves;

(4) Cricket 5-6 molting older nymphs are cultured in separate tanks: after the nymphs reach 5 moults, they are divided into tanks, and an average of 1 tank is divided into 10 tanks. The culture conditions are: daytime temperature is 25-28 ° C, humidity is 30-50%, The temperature at night is 30-32°C, the humidity is 80-90%, and the feed is a mixture of prawn breeding feed, corn, bean skin and cicada slough, and cabbage leaves.

Wherein, in the step (1), the fertilized seeds of wild crickets are stored in aseptic paper bags; thereby ensuring that the fertilized seeds of wild crickets are prevented from being infected by other germs and viruses, and the yield of crickets is improved.

Wherein, in step (1), the wild cricket fertilized seed standard sample is the fertilized seed that has been sterilized by a mass percentage of 5-6‰ potassium permanganate aqueous solution; thereby ensuring that the wild cricket fertilized seed is prevented from being infected by other germs and viruses, Increased cricket yield.

Among them, in step (2), the method of sterilizing the culture tank is to place the culture tank in an environment with a temperature of 50-60°C and a humidity below 10% for 8-10 hours; thereby ensuring that the fertilized seeds of wild crickets are prevented from being fertilized by other Bacterial and viral infections increase cricket productivity.

Wherein, in step (3), the mass ratio of shrimp breeding feed, corn, soybean skin and cicada slough in the feed is (25-35): (30-40): (25-35): 5, preferably 30:35 :30:5; thereby ensuring the nutrition of the cricket 1-4 molting nymphs, and improving the strain of the cricket.

Beneficial effects: the method for artificially cultivating crickets provided by the present invention has simple process, simple equipment and low cost, adopts a completely soilless artificial cultivation method for crickets, has obvious all-weather anti-seasonality, and avoids various soil pathogenic factors, The yield is high; at the same time, the artificial cultivation of high strains of crickets is more stable and accurate, and the cultivated crickets are large in size and good in strains.

Detailed ways

The present invention can be better understood from the following examples. However, those skilled in the art will readily understand that the specific material ratios, process conditions and results described in the examples are only used to illustrate the present invention, and should not and will not limit the present invention described in detail in the claims .

Example 1

The method for artificially cultivating crickets without soil temperature control comprises the following steps:

1. Frozen seed treatment of wild cricket fertilized seeds

(1) Obtaining the fertilized seeds of wild crickets: the fine sand specially used for wild cricket breeding is sieved into dry sand particles with an 80-mesh sieve in advance. , the developmental state is continuously observed as follows:

1-3 days, the seeds are translucent and begin to germinate;

After 5-10 days, the color turns white and the volume expands;

In about 20 days, the volume of each seed is greater than 80 mesh.

The collected wild cricket fertilized seeds and fine sand mixed standard samples were finely sieved with an 80-mesh sieve to obtain wild cricket fertilized seeds separated from sand and soil, and were picked into sterile paper bags with flame-sterilized forceps and dissecting needles.

(2) Sterilization of fertilized seeds of wild crickets

The fertilized seeds of wild crickets are sterilized with a potassium permanganate aqueous solution of 5 ‰ by mass percentage. Since the fertilized seeds of wild crickets have a water-insoluble waxy layer, use a wooden toothpick to stir and make them sink into the water to Fully disinfect and sterilize.

(3) Freezing seed treatment of wild cricket fertilized seeds

Mix the dry sand that has been baked at a temperature above 100°C and naturally cooled with the sterilized wild cricket fertilized seeds, keep the overall humidity of the mixture below 5%, and keep the mixture in a state that cannot form agglomerates when kneading hands, and dry the fertilized wild cricket seeds on the dry sand soil Put the mixture into a fresh-keeping bag and seal it, and place it in a low temperature environment of 2-10°C for more than 100 days, fully simulating the winter environment of wild seeds; the storage temperature can be determined according to the incubation time, and the temperature of the seeds that will be hatched in 100-150 days is planned to be controlled At 100°C, the temperature of the seeds that are planned to hatch for more than one year is controlled at about 2°C; during this period, about 5% of the seeds died naturally, showing an obvious waxy white and shriveled shape.

2. Soilless constant temperature incubation

(1) Preparation of the culture environment

The artificial culture room adopts 10cm thick sandwich foam boards to stick to the wall and set it as the heat preservation room. The hatching racks are arranged in a row, and the foam incubators with a length of 40 cm, a width of 30 cm and a height of 30 cm are uniformly laid on the racks as a cultivation tank for cultivating crickets without soil. Open it, and paste a 5cm wide smooth tape on the upper wall to prevent the cricket nymph from escaping.

Constant temperature and humidity aseptic treatment of the culture tank. The pathogenic sources of crickets are mainly mites, parasitic wasps, polyhedrosis virus and disease-carrying genetic inheritance. Use the electric warm air heater combined with a temperature controller with a socket to carry out high-temperature sterilization at 50-60°C in advance, and at the same time use a humidifier combined with a humidity controller with a socket to carry out low-humidity sterilization within 10%. This method is used for continuous treatment 10 hours can effectively kill cricket pathogenic bacteria and viruses.

(2) Constant temperature cultivation of fertilized seeds of wild crickets

The fertilized seeds of wild crickets treated with frozen seeds and the mixture of dry sand and soil are placed at the natural temperature of the room for 2 days, sprayed with water mist to make the humidity reach about 60%. On the stainless steel incubator tray (size 20*30), the laying thickness is 2-3cm, placed in the culture tank for constant temperature and moisture cultivation for 6 days, the room temperature is controlled at 25°C, and the humidity is 85%.

In order to improve the seed yield of crickets, the thickness of the fine sand mixed with cricket seeds should not be higher than 3cm to ensure that all seeds are evenly heated, so that the seed yield rate is above 90%, and they can be hatched simultaneously within 6-7 days.

Among them, matters needing attention:

——If cold water mist is sprayed during this period, more than 60% of the hatched hot seeds will die from the cold.

- During the incubation period there must be no loss of water (seeds will dry out) nor excessive humidity (seeds will suffocate and mold), otherwise all cricket seeds will die.

——Do not expose to direct light during the hatching period, otherwise the seeds will turn red and die.

——The thickness of the fine sand mixed with cricket seeds is more than 3cm, which will cause the top layer of cricket seeds to be hot and the bottom layer to be cold. The upper layer of seeds will hatch earlier, while the lower layer of seeds will hatch later. Nymphs are eaten by older nymphs.

3. Variable temperature culture of cricket 1-4 molting nymphs

The porous PVC gusset strips (6cm*20cm) with an inner diameter of 3*3mm are used as the activity site for cricket nymphs of all ages, and 2-3 layers are stacked in the incubator. In line with the biological characteristics of nocturnal crickets, a low room temperature of 25°C and a low humidity of 40% during the day is conducive to the dormancy of cricket nymphs; a high room temperature of 30°C and a high humidity of 85% at night is used to promote night eating and activity development of cricket nymphs. The feed is 30:35:30:5 mass percentage of prawn breeding feed, corn, bean skin and cicada slough, stirred into granular dry powder, sprinkled in the tank, containing the protein that crickets can ingest from the soil environment in the wild environment , calcium, electrolytic multidimensional and other trace elements. At the same time, cut the cabbage leaves into 1mm*1mm pieces, sprinkle them on the surface, and feed the nymphs to supplement natural nutrients. Drinking water is a shallow water basin with a length of 10 cm and a width of 20 cm, covered with a wet cloth, which can effectively prevent the death of cricket nymphs from falling into the water.

4. Cricket culture of 5-6 molting nymphs in separate tanks

After 40 days of growth, the nymphs reach about 5 sloughs and start to divide into tanks, with an average of 10 tanks per tank. During the tank division process, the small orifice plate was replaced with porous PVC gusset strips (6cm*20cm) with an inner diameter of 1*1cm, and the vertical and horizontal bridging bricks were used as the activity site for cricket nymphs of all ages, and 2-3 layers were stacked in the incubator. In addition, the wet feed adjusted to paste by heating is used as auxiliary feed on the cabbage leaves, and it is eaten by the tender skin cricket nymphs shortly after molting, and the rest of the environmental parameters are consistent with step 3.

The cultivation results show that the crickets artificially cultivated by the soilless temperature control method have the following characteristics:

——The adults are big and have good skin color. After artificially optimized breeding and sub-tank cultivation, crickets generally have a high individual growth rate, with an average weight of more than 60 mg.

——High survival rate. Because the artificial cultivation solves the invasion of crickets' natural enemies, and the soilless environment greatly reduces the invasion of various pathogenic bacteria, the survival rate of artificially cultivated crickets has reached more than 90%.

——High genetic strain, strong sense of territory. Through conscious directional cultivation, the cricket population has stable strains and pure bloodlines. The space environment of the porous gussets makes it possible to have one worm and one nest during the growth process. The crickets have a strong sense of territorial possession and strong continuous fighting ability of adults.

Example 2

The method for artificially cultivating crickets without soil temperature control comprises the following steps:

1. Frozen seed treatment of wild cricket fertilized seeds

(1) Obtaining the fertilized seeds of wild crickets: the fine sand specially used for wild cricket breeding is sieved into dry sand particles with an 80-mesh sieve in advance. , the developmental state is continuously observed as follows:

1-3 days, the seeds are translucent and begin to germinate;

After 5-10 days, the color turns white and the volume expands;

In about 20 days, the volume of each seed is greater than 80 mesh.

The collected wild cricket fertilized seeds and fine sand mixed standard samples were finely sieved with an 80-mesh sieve to obtain wild cricket fertilized seeds separated from sand and soil, and were picked into sterile paper bags with flame-sterilized forceps and dissecting needles.

(2) Sterilization of fertilized seeds of wild crickets

The fertilized seeds of wild crickets are sterilized with a potassium permanganate aqueous solution of 5 ‰ by mass percentage. Since the fertilized seeds of wild crickets have a water-insoluble waxy layer, use a wooden toothpick to stir and make them sink into the water to Fully disinfect and sterilize.

(3) Freezing seed treatment of wild cricket fertilized seeds

Mix the dry sand that has been baked at a temperature above 100°C and naturally cooled with the sterilized wild cricket fertilized seeds, keep the overall humidity of the mixture below 5%, and keep the mixture in a state that cannot form agglomerates when kneading hands, and dry the fertilized wild cricket seeds on the dry sand soil Put the mixture into a fresh-keeping bag and seal it, and place it in a low temperature environment of 2-10°C for more than 100 days, fully simulating the winter environment of wild seeds; the storage temperature can be determined according to the incubation time, and the temperature of the seeds that will be hatched in 100-150 days is planned to be controlled At 100°C, the temperature of the seeds that are planned to hatch for more than one year is controlled at about 2°C; during this period, about 5% of the seeds died naturally, showing an obvious waxy white and shriveled shape.

2. Soilless constant temperature incubation

(1) Preparation of the culture environment

The artificial culture room adopts 10cm thick sandwich foam boards to stick to the wall and set it as the heat preservation room. The hatching racks are arranged in a row, and the foam incubators with a length of 40 cm, a width of 30 cm and a height of 30 cm are uniformly laid on the racks as a cultivation tank for cultivating crickets without soil. Open it, and paste a 5cm wide smooth tape on the upper wall to prevent the cricket nymph from escaping.

Constant temperature and humidity aseptic treatment of the culture tank. The pathogenic sources of crickets are mainly mites, parasitic wasps, polyhedrosis virus and disease-carrying genetic inheritance. Use the electric warm air heater combined with a temperature controller with a socket to carry out high-temperature sterilization at 50-60°C in advance, and at the same time use a humidifier combined with a humidity controller with a socket to carry out low-humidity sterilization within 10%. This method is used for continuous treatment 10 hours can effectively kill cricket pathogenic bacteria and viruses.

(2) Constant temperature cultivation of fertilized seeds of wild crickets

The fertilized seeds of wild crickets treated with frozen seeds and the mixture of dry sand and soil are placed at the natural temperature of the room for 1 day, sprayed with water mist to make the humidity reach about 60%, and can be kneaded into agglomerates after stirring, and can be dispersed after stirring. On the stainless steel incubator tray (size 20*30), the laying thickness is 2-3cm, placed in the culture tank for constant temperature and moisture cultivation for 6 days, the room temperature is controlled at 26°C, and the humidity is 90%.

In order to improve the seed yield of crickets, the thickness of the fine sand mixed with cricket seeds should not be higher than 3cm to ensure that all seeds are evenly heated, so that the seed yield rate is above 90%, and they can be hatched simultaneously within 6-7 days.

Among them, matters needing attention:

——If cold water mist is sprayed during this period, more than 60% of the hatched hot seeds will die from the cold.

- During the incubation period there must be no loss of water (seeds will dry out) nor excessive humidity (seeds will suffocate and mold), otherwise all cricket seeds will die.

——Do not expose to direct light during the hatching period, otherwise the seeds will turn red and die.

——The thickness of the fine sand mixed with cricket seeds is more than 3cm, which will cause the top layer of cricket seeds to be hot and the bottom layer to be cold. The upper layer of seeds will hatch earlier, while the lower layer of seeds will hatch later. Nymphs are eaten by older nymphs.

3. Variable temperature culture of cricket 1-4 molting nymphs

The porous PVC gusset strips (6cm*20cm) with an inner diameter of 3*3mm are used as the activity site for cricket nymphs of all ages, and 2-3 layers are stacked in the incubator. In line with the nocturnal biological characteristics of crickets, a low room temperature of 26°C and a low humidity of 30% during the day is conducive to the dormancy of cricket nymphs; a high room temperature of 32°C and a high humidity of 90% at night promotes nighttime feeding and activity development of cricket nymphs. The feed is 35:40:35:5 mass percentage of prawn breeding feed, corn, bean skin and cicada slough, stirred into granular dry powder, sprinkled in the tank, which contains the protein that crickets can ingest from the soil environment in the wild environment , calcium, electrolytic multidimensional and other trace elements. At the same time, cut the cabbage leaves into 1mm*1mm pieces, sprinkle them on the surface, and feed the nymphs to supplement natural nutrients. Drinking water is a shallow water basin with a length of 10 cm and a width of 20 cm, covered with a wet cloth, which can effectively prevent the death of cricket nymphs from falling into the water.

4. Cricket culture of 5-6 molting nymphs in separate tanks

After 40 days of growth, the nymphs reach about 5 sloughs and start to divide into tanks, with an average of 10 tanks per tank. During the tank division process, the small orifice plate was replaced with porous PVC gusset strips (6cm*20cm) with an inner diameter of 1*1cm, and the vertical and horizontal bridging bricks were used as the activity site for cricket nymphs of all ages, and 2-3 layers were stacked in the incubator. In addition, the wet feed adjusted to paste by heating is used as auxiliary feed on the cabbage leaves, and it is eaten by the tender skin cricket nymphs shortly after molting, and the rest of the environmental parameters are consistent with step 3.

The cultivation results show that the crickets artificially cultivated by the soilless temperature control method have the following characteristics:

——The adults are big and have good skin color. After artificially optimized breeding and sub-tank cultivation, crickets generally have a high individual growth rate, with an average weight of more than 60 mg.

——High survival rate. Because the artificial cultivation solves the invasion of crickets' natural enemies, and the soilless environment greatly reduces the invasion of various pathogenic bacteria, the survival rate of artificially cultivated crickets has reached more than 90%.

——High genetic strain, strong sense of territory. Through conscious directional cultivation, the cricket population has stable strains and pure bloodlines. The space environment of the porous gussets makes it possible to have one worm and one nest during the growth process. The crickets have a strong sense of territorial possession and strong continuous fighting ability of adults.

Example 3

The method for artificially cultivating crickets without soil temperature control comprises the following steps:

1. Frozen seed treatment of wild cricket fertilized seeds

(1) Obtaining the fertilized seeds of wild crickets: the fine sand specially used for wild cricket breeding is sieved into dry sand particles with an 80-mesh sieve in advance. , the developmental state is continuously observed as follows:

1-3 days, the seeds are translucent and begin to germinate;

After 5-10 days, the color turns white and the volume expands;

In about 20 days, the volume of each seed is greater than 80 mesh.

The collected wild cricket fertilized seeds and fine sand mixed standard samples were finely sieved with an 80-mesh sieve to obtain wild cricket fertilized seeds separated from sand and soil, and were picked into sterile paper bags with flame-sterilized forceps and dissecting needles.

(2) Sterilization of fertilized seeds of wild crickets

The fertilized seeds of wild crickets are sterilized with a potassium permanganate aqueous solution of 6‰ in mass percent, because the surface of the fertilized seeds of wild crickets has a water-insoluble waxy layer, stir it with a wooden toothpick to sink into the water, and Fully disinfect and sterilize.

(3) Freezing seed treatment of wild cricket fertilized seeds

Mix the dry sand that has been baked at a temperature above 100°C and naturally cooled with the sterilized wild cricket fertilized seeds, keep the overall humidity of the mixture below 5%, and keep the mixture in a state that cannot form agglomerates when kneading hands, and dry the fertilized wild cricket seeds on the dry sand soil Put the mixture into a fresh-keeping bag and seal it, and place it in a low temperature environment of 2-10°C for more than 100 days, fully simulating the winter environment of wild seeds; the storage temperature can be determined according to the incubation time, and the temperature of the seeds that will be hatched in 100-150 days is planned to be controlled At 100°C, the temperature of the seeds that are planned to hatch for more than one year is controlled at about 2°C; during this period, about 5% of the seeds died naturally, showing an obvious waxy white and shriveled shape.

2. Soilless constant temperature incubation

(1) Preparation of the culture environment

The artificial culture room adopts 10cm thick sandwich foam boards to stick to the wall and set it as the heat preservation room. The hatching racks are arranged in a row, and the foam incubators with a length of 40 cm, a width of 30 cm and a height of 30 cm are uniformly laid on the racks as a cultivation tank for cultivating crickets without soil. Open it, and paste a 5cm wide smooth tape on the upper wall to prevent the cricket nymph from escaping.

Constant temperature and humidity aseptic treatment of the culture tank. The pathogenic sources of crickets are mainly mites, parasitic wasps, polyhedrosis virus and disease-carrying genetic inheritance. Use the electric warm air heater combined with a temperature controller with a socket to carry out high-temperature sterilization at 50-60°C in advance, and at the same time use a humidifier combined with a humidity controller with a socket to carry out low-humidity sterilization within 10%. This method is used for continuous treatment 10 hours can effectively kill cricket pathogenic bacteria and viruses.

(2) Constant temperature cultivation of fertilized seeds of wild crickets

The fertilized seeds of wild crickets treated with frozen seeds and the mixture of dry sand and soil are placed at the natural temperature of the room for 2 days, sprayed with water mist to make the humidity reach about 60%. On the stainless steel incubator tray (size 20*30), the laying thickness is 2-3cm, placed in the culture tank for 7 days at constant temperature and moisture, and the room temperature is controlled at 30°C and the humidity is 80%.

In order to improve the seed yield of crickets, the thickness of the fine sand mixed with cricket seeds should not be higher than 3cm to ensure that all seeds are evenly heated, so that the seed yield rate is above 90%, and they can be hatched simultaneously within 6-7 days.

Among them, matters needing attention:

——If cold water mist is sprayed during this period, more than 60% of the hatched hot seeds will die from the cold.

- During the incubation period there must be no loss of water (seeds will dry out) nor excessive humidity (seeds will suffocate and mold), otherwise all cricket seeds will die.

——Do not expose to direct light during the hatching period, otherwise the seeds will turn red and die.

——The thickness of the fine sand mixed with cricket seeds is more than 3cm, which will cause the top layer of cricket seeds to be hot and the bottom layer to be cold. The upper layer of seeds will hatch earlier, while the lower layer of seeds will hatch later. Nymphs are eaten by older nymphs.

3. Variable temperature culture of cricket 1-4 molting nymphs

The porous PVC gusset strips (6cm*20cm) with an inner diameter of 3*3mm are used as the activity site for cricket nymphs of all ages, and 2-3 layers are stacked in the incubator. In line with the biological characteristics of nocturnal crickets, a low room temperature of 28°C and a low humidity of 50% during the day is conducive to the dormancy of cricket nymphs; a high room temperature of 31°C and a high humidity of 80% at night promotes nighttime feeding and activity development of cricket nymphs. The feed is 25:30:25:5 mass percentage of prawn breeding feed, corn, bean skin and cicada slough, stirred into granular dry powder, sprinkled in the tank, which contains the protein that crickets can ingest from the soil environment in the wild environment , calcium, electrolytic multidimensional and other trace elements. At the same time, cut the cabbage leaves into 1mm*1mm pieces, sprinkle them on the surface, and feed the nymphs to supplement natural nutrients. Drinking water is a shallow water basin with a length of 10 cm and a width of 20 cm, covered with a wet cloth, which can effectively prevent the death of cricket nymphs from falling into the water.

4. Cricket culture of 5-6 molting nymphs in separate tanks

After 40 days of growth, the nymphs reach about 5 sloughs and start to divide into tanks, with an average of 10 tanks per tank. During the tank division process, the small orifice plate was replaced with porous PVC gusset strips (6cm*20cm) with an inner diameter of 1*1cm, and the vertical and horizontal bridging bricks were used as the activity site for cricket nymphs of all ages, and 2-3 layers were stacked in the incubator. In addition, the wet feed adjusted to paste by heating is used as auxiliary feed on the cabbage leaves, and it is eaten by the tender skin cricket nymphs shortly after molting, and the rest of the environmental parameters are consistent with step 3.

The cultivation results show that the crickets artificially cultivated by the soilless temperature control method have the following characteristics:

——The adults are big and have good skin color. After artificially optimized breeding and sub-tank cultivation, crickets generally have a high individual growth rate, with an average weight of more than 60 mg.

——High survival rate. Because the artificial cultivation solves the invasion of crickets' natural enemies, and the soilless environment greatly reduces the invasion of various pathogenic bacteria, the survival rate of artificially cultivated crickets has reached more than 90%.

——High genetic strain, strong sense of territory. Through conscious directional cultivation, the cricket population has stable strains and pure bloodlines. The space environment of the porous gussets makes it possible to have one worm and one nest during the growth process. The crickets have a strong sense of territorial possession and strong continuous fighting ability of adults.

Claims (5)

1. without soil temperature control, manually cultivate a method for cricket, it is characterized in that: comprise the following steps:

(1) seed that freezes of wild cricket fertilization seed is processed: wild cricket fertilization seed and dry sandy soil mix to be placed in temperature 2-10 ℃ to be processed more than 100 days through freezing seed;

(2) constant temperature culture of wild cricket fertilization seed: the wild cricket fertilization seed after freezing seed processing was cultivated after 1-2 days under natural temperature, and in the aquarium after sterilizing, constant-temperature moisture-keeping is cultivated 6-7 days, and condition of culture is: temperature 25-30 ℃, humidity 80-90%;

(3) cricket 1-4 is sloughed off the Fluctuation temperature culture of nymph: the porous PVC buckle bar oblique bridge of usining is built the space for activities as cricket nymph in each in age, stacking layer 2-3 in incubator, wild cricket after constant temperature culture is fertilized to seed in day and night cultivating 40-45 days in varying temperature environment, condition of culture is: day temperature is that 25-28 ℃, humidity are 30-50%, nocturnal temperature is that 30-32 ℃, humidity are 80-90%, and feed is mixture and the Chinese cabbage leaf of prawn culturing feed, corn, skin of beancurd and cicada slough;

(4) cricket 5-6 is sloughed off minute cylinder cultivation of Elder nymph: nymph reaches 5 and sloughs off cylinder cultivation in rear minute, average 1 cylinder is divided into 10 cylinders, condition of culture is: day temperature is that 25-28 ℃, humidity are 30-50%, nocturnal temperature is that 30-32 ℃, humidity are 80-90%, and feed is mixture and the Chinese cabbage leaf of prawn culturing feed, corn, skin of beancurd and cicada slough.

2. a kind of method of manually cultivating cricket without soil temperature control according to claim 1, is characterized in that: in step (1), the preservation of wild cricket fertilization seed adopts aseptic paper bag.

3. a kind of method of manually cultivating cricket without soil temperature control according to claim 1, is characterized in that: in step (1), described wild cricket fertilization seed is the fertilization seed through mass percent 5-6 ‰ potassium permanganate solution sterilization processing.

4. a kind of method of manually cultivating cricket without soil temperature control according to claim 1, is characterized in that: in step (2), the sterilizing methods of aquarium is that 50-60 ℃, humidity are that environment below 10% is processed 8-10h for aquarium being placed in to temperature.

5. a kind of method of manually cultivating cricket without soil temperature control according to claim 1, is characterized in that: in step (3), in feed, the mass ratio of prawn culturing feed, corn, skin of beancurd and cicada slough is (25-35): (30-40): (25-35): 5.