CN111436399A - Method for regulating and controlling feeding raw materials of hermetia illucens larvae - Google Patents

Abstract

The invention belongs to the technical field of hermetia illucens breeding, and particularly relates to a method for regulating and controlling feeding raw materials of hermetia illucens larvae, wherein the hermetia illucens larvae are stimulated by light according to the light-resistant characteristic of the hermetia illucens larvae, and when light with the intensity higher than a certain light intensity is given, the hermetia illucens larvae are drilled into the raw materials so as to feed from inside to outside; when the illumination lower than a certain illumination intensity is given or no illumination is given, the black soldier fly larvae climb out of the raw materials and feed from inside to outside, so that the feeding position and the raw material depth are forced to be changed by adjusting different illumination intensities, and the aim of improving the raw material feeding efficiency is finally fulfilled.

Description

A kind of method for regulating and controlling the feeding of black soldier fly larvae

technical field

The invention belongs to the technical field of black soldier fly breeding, and in particular relates to a method for regulating and controlling the feeding of black soldier fly larvae from raw materials.

Background technique

The black soldier fly (Hermetia illucens L.) is a saprophytic soldier fly insect, native to the Americas, and has been widely distributed all over the world, mainly between 40 degrees north and south latitude. Black soldier fly larvae can feed on raw materials, such as kitchen waste and livestock and poultry manure, and convert the raw materials into highly nutritious insect bodies and insect manure. Insect manure is a natural organic fertilizer. The worms contain high protein and high energy, which can not only be used directly as feed materials for aquaculture, but also can extract biologically active substances such as antimicrobial peptides and chitin to enhance their value. Therefore, raising black soldier fly larvae in large quantities is not only beneficial to environmental protection, but also generates new feed protein and energy, so it has good social, environmental and economic benefits.

The life of the black soldier fly lasts about 40-45 days, and it goes through five stages: egg, larva, prepupa, pupa and adult. After hatching from eggs to larvae, the black soldier flies have a very large amount of food, which is the "golden" feeding stage of the black soldier flies. Usually, the black soldier flies at this stage are used to process organic wastes or provide nutritious raw materials. To ensure the normal growth of black soldier fly larvae. In the process of feeding black soldier flies, in addition to their own energy consumption, through their biotransformation, 80% of the raw materials can become their own high-quality insect protein and fat, and 20% can become nutrient-rich insect manure organic fertilizer .

However, due to the different sources of raw materials, the degree of dryness and moisture, the degree of bulkiness, and the distribution of nutrients are quite different. Black soldier fly larvae will be selective when feeding: if the humidity of the garbage is too high or the temperature is too high, the larvae will Feed from the outermost of the raw materials to the inside, and during the feeding process, the raw materials will be continuously spread out until all the garbage is eaten; if the garbage is dry or the temperature is low, the larvae will be collected from the inside out. Although the above two feeding processes can consume most of the nutrients in these raw materials, due to the selectivity of feeding, the consumption of raw materials will be incomplete.

In order to improve the feeding efficiency and uniformity of larvae, the existing breeding methods generally add auxiliary materials to the raw materials to process the raw materials into a unified dry and humidity standard, but this will lead to high breeding costs. Therefore, in order to save costs, the existing breeding equipment has added a throwing equipment to alleviate the problem of incomplete feeding. However, when the throwing equipment is throwing raw materials, it will mix the raw materials that have been eaten and those that have not been eaten. Together, it also increases the amount to be processed and the difficulty of feeding, so it cannot fundamentally solve the problem of incomplete feeding.

Therefore, it is necessary to provide a method for regulating the feeding of black soldier flies, which is low in cost and beneficial to improve the feeding efficiency and uniformity of raw materials.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a method for regulating and controlling the black soldier fly larvae to feed on raw materials. Force it to change the way of feeding, and finally achieve the purpose of improving the efficiency of garbage feeding.

For achieving the above object, the technical scheme adopted in the present invention is:

The invention provides a method for regulating and controlling the feeding of black soldier flies larvae for raw materials, specifically: adding lighting equipment above or/and below the black soldier flies culturing tank, and adjusting the lighting equipment during the feeding process of the black soldier fly larvae. Light intensity, thereby changing the feeding location and feed depth of black soldier fly larvae.

Because the black soldier fly larvae are more sensitive to light, when the light intensity exceeds a certain level, the larvae will find a place that is relatively dark to hide, that is, the dark feature of black soldier fly larvae. Using this feature, a lighting device with a certain light intensity can be added above or/and below the breeding tank to adjust the feeding method of the black soldier fly larvae. Using light to stimulate the black soldier fly larvae, when given light higher than a certain light intensity, the black soldier fly larvae will burrow into the raw material to avoid the light, so as to feed from the inside out; when given light below a certain light intensity or When there is no light at all, the black soldier fly larvae crawl out of the raw materials and feed from the inside out. Therefore, by adjusting different light intensities, the different feeding positions and raw material depths of the black soldier fly larvae can be changed, so as to control the black soldier flies. The purpose of larval feeding process, the purpose of thoroughly feeding raw materials.

Preferably, the illumination device generates an illumination intensity of less than 500 Lux, or/and generates an illumination intensity of greater than 1000 Lux, and the wavelength of the illumination generated by the illumination device is 380-780 nm.

When the light intensity is higher than 1000Lux, it can be ensured that the light of each position in the breeding tank is in the light sensitive area of the black soldier fly larvae. Go to the raw materials to feed from the inside to the outside; and when the light intensity is lower than 500Lux or when no light is given, the light in each position in the breeding tank is in the non-light-sensitive area of the black soldier fly larvae. Black soldier fly larvae feed from the outside in from the surface of the raw material.

Preferably, the culturing tank is equipped with turning and throwing equipment, and after the turning and throwing equipment has completed turning and throwing in the breeding trough, the light intensity of the lighting device is adjusted.

In more cases, in order to promote the ventilation and heat dissipation of the raw materials, so as not to affect the survival of the black soldier fly larvae due to excessive temperature, it is generally necessary to use a turning and throwing equipment to turn the raw materials in the breeding tank. It increases the air permeability of the raw material and reduces its temperature, but it will also lead to a decrease in the feeding enthusiasm of the black soldier fly larvae, and the problem of incomplete feeding will also occur. Mix the raw materials that the larvae have not eaten with the raw materials that have already been eaten. At this time, the black soldier fly larvae do not like to eat, that is, the enthusiasm of the black soldier fly larvae to eat is greatly reduced. At this time, the black water can be used. The light-avoiding characteristics of horsefly larvae, on the premise of using turning and throwing equipment in the conventional black soldier fly breeding process, add a lighting device above the breeding tank. Drill into the garbage for feeding, so as to solve the problem of incomplete feeding.

Preferably, in some other embodiments, when the water content of the raw material is higher than 60%, the light intensity of the lighting device is adjusted to be greater than 1000 Lux, and the raw material is tossed 3-5 times a day by using a turning tossing device.

The moisture content of the raw materials is too high, which will lead to poor air permeability, and fermentation heat is likely to occur during the stacking process, resulting in excessive temperature. For this kind of wet garbage, the black soldier fly larvae generally run away after feeding on the surface layer. , it will also lead to the problem of incomplete feeding. At this time, the above method can also be used to force the black soldier fly larvae to burrow into the raw material for feeding, thereby solving the problem of incomplete feeding.

Preferably, in other embodiments, when the water content of the raw material is lower than 60% and the internal temperature is higher than 35°C, the light intensity of the lighting device is adjusted to be greater than 1000 Lux, and the raw material is treated with a turning and polishing device every day. Flip 2-3 times.

The feeding amount of raw materials has a certain thickness (above 10cm), and it generally takes more than 8 days to finish eating. For dry raw materials, the black soldier fly larvae will not continue to feed after about 3cm from the surface, because The raw materials inside are not well ventilated. At this time, the black soldier fly larvae can also be used to avoid light to change the feeding depth of the black soldier fly larvae and solve the problem of incomplete feeding.

Taking advantage of the light-shielding characteristics of black soldier fly larvae, a lighting device with a certain light intensity can be added above the breeding tank to adjust the feeding method of the black soldier fly larvae.

The method for utilizing the above-mentioned characteristics to regulate and control the black soldier fly larvae to feed on raw materials specifically includes the following steps:

S1. After the larvae are put on the raw materials, start the turning and throwing equipment after 3-5 hours of feeding;

S2. Complete a flipping and tossing according to the conventional breeding procedures;

S3. Adjust the light intensity of the lighting equipment to be greater than 1000Lux, and irradiate for 1-2 hours;

S4. Repeat steps S2 and S3 until feeding is completed.

Then the black soldier fly larvae are used to separate the insect material from light: adjust the light intensity of the lighting equipment to more than 1000Lux, and the larvae will escape to the bottom layer of the insect material mixture in the breeding tank, and then remove the upper layer of waste. The insect feed mixture can be separated using a mechanical sieve.

In some special cases, black soldier fly larvae are also more sensitive to temperature. When the temperature exceeds or falls below a certain level (generally above 31°C or below 15°C), the larvae will find a place with a more comfortable temperature (15-30°C). between) for concealment. In the weather with high temperature (above 30 ℃), when the temperature inside the raw material is too high, even if the larvae are given more than a certain light intensity, there will still be a large part of the larvae that do not burrow into the raw material to feed, or only gather Feed on the shallow surface of the raw material; in the weather with low temperature (below 15 ℃), the black soldier fly larvae will gather at the bottom of the raw material to feed, resulting in incomplete feeding. At this time, light treatment is also required at the same time. The surface and/or bottom of the raw material are heated or cooled, so that the temperature of the surface and/or bottom of the raw material is not in the comfort zone of the larvae, so that the larvae burrow into the middle of the raw material to feed and improve the feeding efficiency.

In view of the above situation, the present invention also includes the step of adjusting the temperature of the bottom and/or surface of the raw material in the culture tank.

Preferably, a temperature control device is further provided above and/or at the bottom of the culture tank, and the temperature control device is a heating device (such as floor heating, electric blanket, electric heating wire, infrared heater, electric heating, fan heater), or Refrigeration equipment (such as circulating water pipes, semiconductor refrigeration chips, vertical air conditioners, air coolers, etc.), after the turning and throwing equipment has completed turning and throwing in the breeding tank, the temperature at the bottom and/or surface of the raw materials is adjusted through the temperature control device, so as to Change the feeding location and feed depth of black soldier fly larvae.

The method for controlling the black soldier fly larvae to feed raw materials by utilizing the temperature-sensitive characteristic of the black soldier fly larvae specifically includes the following steps:

S1. After the larvae are put on the raw materials, start the turning and throwing equipment after 3-5 hours of feeding;

S2. Complete a flipping and tossing according to the conventional breeding procedures;

S3. Adjust the light intensity of the lighting equipment to more than 1000Lux, irradiate for 1-2 hours, or/and turn on the temperature control equipment for cyclic temperature control treatment, control the temperature every 10-30 minutes, and control the temperature for 1-10 minutes each time;

S4. Repeat steps S2 and S3 until feeding is completed.

Finally, the black soldier fly larvae were used to separate the insect material from light.

Preferably, the standard for completing the feeding of raw materials is: when the raw materials in the culture tank become fluffy and granular, and there is no change in the amount within 2-4 hours, it can be judged that the raw materials are eaten.

Preferably, the raw materials are kitchen waste, bean dregs, expired food, by-products of food processing, livestock and poultry manure, and the like.

Compared with the prior art, the beneficial effects of the present invention are:

During the process of feeding the raw materials, the black soldier fly larvae will selectively feed on the raw materials due to the reasons of temperature and/or humidity, or the treatment of the turning equipment, resulting in incomplete processing of the raw materials. Therefore, the present invention Provided is a method for regulating the feeding of black soldier fly larvae. According to the light-avoiding property of black soldier fly larvae, the black soldier fly larvae are stimulated by light. Feeding from the outside to the inside; when the light above a certain light intensity is given, the black soldier fly larvae feed from the inside to the outside, so that by adjusting different light intensities, it is forced to change the feeding position and the depth of the raw materials, and finally improve the raw material. the purpose of feeding efficiency. During the feeding process by adopting this method, the black soldier fly larvae are fed into the feed for 5 days, and the feed is fed 3 times a day on average, which can ensure that the black soldier fly larvae can fully feed the raw materials. Compared with adding auxiliary materials to raw materials, the method provided by the invention can not only save costs, but also improve the efficiency of feeding, which is more conducive to environmental protection and has better economic benefits. In addition, when the external temperature is too high or too low, the use of temperature control to supplement light stimulation can more effectively improve the feeding effect of black soldier fly larvae.

Detailed ways

The specific embodiments of the present invention will be further described below. It should be noted here that the descriptions of these embodiments are used to help the understanding of the present invention, but do not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

The test methods used in the following experimental examples are conventional methods unless otherwise specified; the materials, reagents, etc. used are commercially available reagents and materials unless otherwise specified.

Example 1 Using the method of the present invention and conventional methods to regulate and control the black soldier fly larvae to eat 1 ton of garbage with low humidity

(1) The method of the present invention is used to regulate and control the black soldier fly larvae to feed 1 ton of kitchen waste with water contents of 25%, 40% and 55% respectively.

The breeding equipment in this experiment includes a breeding tank (length, width and height of 2m × 2m × 0.75m), a throwing equipment (the throwing equipment involved in the patent with the publication number of CN110432229A) set near the notch of the breeding tank, and a throwing equipment set in the breeding tank. Adjustable light bulbs directly above or/and directly below the center of the tank, the light bulb is 0.75m away from the notch of the breeding tank, and the light intensity of the light bulb includes at least two gears of 400Lux and 1200Lux. The method for regulating the feeding of black soldier fly larvae specifically includes the following steps:

S1. First put the kitchen waste into the culture tank with a thickness of 15cm, and then put 3-day-old black soldier fly larvae into the culture tank. The mass ratio of the amount of black soldier fly larvae to the amount of kitchen waste It is 3:100, after 5 hours of feeding (about 3cm after feeding, at this time, the food waste is not well ventilated and the temperature is too high, and the black soldier fly larvae will escape from food) and start the turning and throwing equipment;

S2, with reference to the patented method of Patent Bulletin No. CN110432230A (a method for culturing black soldier flies based on culturing equipment), complete a flipping and tossing according to conventional breeding regulations;

S3. Adjust the light intensity of the bulb to be greater than 1200Lux, and irradiate for 1.5h;

S4, according to the method of steps S2 and S3, turn over and lightly treat the kitchen waste, and turn over and toss 3 times a day;

S5. When the black soldier fly larvae are put into the feed for 5 days, the average feeding is 3 times a day, and the amount of each feeding is 25 times the amount of the black soldier fly larvae. The change of kitchen waste, when the raw materials in the breeding tank become fluffy and granular, and there is no change in the amount within 3 hours, it can be judged that the raw materials have been eaten;

S6. Use the light-avoiding characteristics of black soldier fly larvae to separate the insect material: adjust the light intensity of the lighting equipment to more than 1000Lux, the larvae will escape to the bottom layer of the insect material mixture in the breeding tank, and then remove the upper layer of waste. The worm feed mixture below can be separated from the worm feed using a mechanical sieve.

Finally, after sieving the raw materials that have been ingested, the residual weight of the kitchen waste in the breeding tank is counted (using the undegraded large pieces of residual material as the statistical standard), and the feeding efficiency of the kitchen waste is calculated according to the following formula; , the total fresh weight of black soldier fly larvae obtained from rearing was counted.

Feeding efficiency=(total amount of food waste - residual amount of food waste)/total amount of food waste × 100%.

(2) Using conventional methods to control the black soldier fly larvae to eat 1 ton of kitchen waste with a water content of 25%, 40%, and 55%, respectively

The breeding equipment of the conventional method is the same as the above, and the method of regulating the feeding of the black soldier fly larvae is the same as the above, the only difference is that no light is applied, which specifically includes the following steps:

S1. First put the kitchen waste into the culture tank with a thickness of 15cm, and then put 3-day-old black soldier fly larvae into the culture tank. The mass ratio of the amount of black soldier fly larvae to the amount of kitchen waste It is 3:100, after 5 hours of feeding (about 3cm after feeding, at this time, the food waste is not well ventilated and the temperature is too high, and the black soldier fly larvae will escape from food) and start the turning and throwing equipment;

S2, with reference to the patented method of Patent Bulletin No. CN110432230A (a method for culturing black soldier flies based on culturing equipment), complete a flipping and tossing according to conventional breeding regulations;

S3, according to the method of step S2, turn over the kitchen waste, and turn it over 3 times a day;

S4. When the black soldier fly larvae are put into the feed for 5 days, the average feeding amount is 3 times a day, and the amount of each feeding is 25 times that of the black soldier fly larvae. The change of kitchen waste, when the raw materials in the breeding tank become fluffy and granular, and there is no change in the amount within 3 hours, it can be judged that the raw materials have been eaten.

After the insect feed is separated, the raw materials that have been ingested are screened, the residual weight of the kitchen waste in the breeding tank is counted (with the undegraded large residual material as the statistical standard), and the feeding efficiency of the kitchen waste is calculated. Total fresh weight of black soldier fly larvae.

As can be seen from the experimental results in Table 1, using the method of the present invention to regulate and control the feeding of the black soldier fly larvae is not only more conducive to environmental protection, but also obtains better economic benefits.

Table 1 Feeding situation of black soldier fly larvae on low-humidity garbage

Embodiment 2 Adopt the method of the present invention and conventional method to regulate and control the black soldier fly larvae to eat 1 ton of garbage with high humidity

(1) The method of the present invention is used to regulate and control the black soldier fly larvae to feed 1 ton of kitchen waste with a water content of 60%, 70% and 80% respectively.

The breeding equipment of this experiment is the same as that of Example 1, and the method for regulating and controlling the feeding of the black soldier fly larvae specifically includes the following steps:

S1. First put the kitchen waste into the breeding tank with a thickness of 10cm, and then put 3-day-old black soldier fly larvae into the breeding tank. The mass ratio of the amount of black soldier fly larvae to the amount of kitchen waste It is 3:100, after 3 hours of feeding (high humidity, poor ventilation of kitchen waste, black soldier fly larvae appear to escape soon after feeding), start the turning and throwing equipment;

S2, with reference to the patented method of Patent Bulletin No. CN110432230A (a method for culturing black soldier flies based on culturing equipment), complete a flipping and tossing according to conventional breeding regulations;

S3. Adjust the light intensity of the bulb to be greater than 1200Lux, and irradiate for 1.5h;

S4, according to the method of steps S2 and S3, tossing and illuminating the kitchen waste, and tossing 5 times a day;

S5. After 5 days of feeding black soldier fly larvae, the average feeding amount is 3 times a day, and the amount of each feeding is 20 times that of the black soldier fly larvae. After feeding 1 ton of kitchen waste, regularly observe the food in the breeding tank The change of kitchen waste, when the raw materials in the breeding tank become fluffy and granular, and there is no change in the amount within 3 hours, it can be judged that the raw materials have been eaten;

S6. Use the light-avoiding characteristics of black soldier fly larvae to separate the insect material: adjust the light intensity of the lighting equipment to more than 1000Lux, the larvae will escape to the bottom layer of the insect material mixture in the breeding tank, and then remove the upper layer of waste. The worm feed mixture below can be separated from the worm feed using a mechanical sieve.

Finally, after sieving the raw materials after feeding, the residual weight of the kitchen waste in the breeding tank is counted (with the undegraded large pieces of residual material as the statistical standard), and the feeding efficiency of the kitchen waste and the black soldier fly larvae are calculated. total fresh weight.

(2) Using conventional methods to control the black soldier fly larvae to eat 1 ton of kitchen waste with a water content of 60%, 70%, and 80%, respectively

The breeding equipment of the conventional method is the same as the above, and the method of regulating the feeding of the black soldier fly larvae is the same as the above, the only difference is that no light is applied, which specifically includes the following steps:

S1. First put the kitchen waste into the breeding tank with a thickness of 10cm, and then put 3-day-old black soldier fly larvae into the breeding tank. The mass ratio of the amount of black soldier fly larvae to the amount of kitchen waste It is 3:100, after 3 hours of feeding (high humidity, poor ventilation of kitchen waste, black soldier fly larvae appear to escape soon after feeding), start the turning and throwing equipment;

S2, with reference to the patented method of Patent Bulletin No. CN110432230A (a method for culturing black soldier flies based on culturing equipment), complete a flipping and tossing according to conventional breeding regulations;

S3, according to the method of step S2, turn over the kitchen waste, and turn over 5 times a day;

S4. When the black soldier fly larvae are put into the feed for 5 days, the average feeding amount is 3 times a day, and the amount of each feeding is 20 times the amount of the black soldier fly larvae. The change of kitchen waste, when the raw materials in the breeding tank become fluffy and granular, and there is no change in the amount within 3 hours, it can be judged that the raw materials have been eaten.

After the insect feed is separated, the raw materials that have been ingested are screened, the residual weight of the kitchen waste in the breeding tank is counted (with the undegraded large residual material as the statistical standard), and the feeding efficiency of the kitchen waste is calculated. Total fresh weight of black soldier fly larvae.

As can be seen from the experimental results in Table 2, using the method of the present invention to regulate and control the feeding of the black soldier fly larvae is not only more conducive to environmental protection, but also obtains better economic benefits.

Table 2 Feeding situation of black soldier fly larvae on high-humidity garbage

Embodiment 3 In the weather with higher or lower temperature (outside temperature is 32 ℃ and 10 ℃ respectively), the method of the present invention and the conventional method are used to regulate and control the black soldier fly larvae to eat 1 ton of kitchen waste with a water content of 40%

Method 1: Give light treatment only

The specific experimental method is the same as that in Example 1.

Method 2: Give light treatment and temperature control treatment at the same time

The cultivation equipment in this experiment is the same as that of Example 1, and at the same time, an infrared heater is provided directly above the cultivation tank, and/or a circulating water pipe is provided at the bottom of the cultivation tank. The method for regulating the feeding of black soldier fly larvae specifically includes the following steps:

S1. First put the kitchen waste into the culture tank with a thickness of 15cm, and then put 3-day-old black soldier fly larvae into the culture tank. The mass ratio of the amount of black soldier fly larvae to the amount of kitchen waste It is 3:100, and the turning and throwing equipment is started after 5 hours of feeding;

S2, with reference to the patented method of Patent Bulletin No. CN110432230A (a method for culturing black soldier flies based on culturing equipment), complete a flipping and tossing according to conventional breeding regulations;

S3. Adjust the light intensity of the bulb to be greater than 1200Lux, irradiate for 1.5h, and turn on the infrared heater at the same time in a high temperature weather (32°C) to perform cyclic temperature control treatment on the surface of the raw material. The temperature is controlled once every 15 minutes. Keep the temperature for 3-5min to keep the temperature of the surface of the raw material between 33-35 degrees; in the weather with low temperature (10 ℃), cooling water is poured into the circulating water pipe at the same time, and the bottom of the raw material is subjected to circulating temperature control treatment. The temperature is controlled once every 10 minutes, and the temperature is controlled for 2-3 minutes each time, so that the temperature at the bottom of the raw material is maintained between 7-9 degrees;

In the weather with high temperature, the temperature at the bottom of the raw material is the highest, the temperature in the middle of the raw material is second, and the temperature on the surface of the raw material is the lowest. The surface is shallow for feeding, so it is necessary to heat up the surface of the raw material. At this time, the temperature in the middle of the raw material is relatively the lowest, so that the black soldier fly larvae are concentrated in the middle of the raw material for feeding and improve the feeding efficiency; When the temperature is low, because the temperature at the bottom of the raw material is the highest, the black soldier fly larvae generally gather at the bottom of the raw material to feed. When the bottom of the raw material is cooled, the temperature in the middle of the raw material is relatively high, so it can The black soldier fly larvae were concentrated in the middle of the raw material for feeding.

S4, according to the methods of steps S2 and S3, the kitchen waste is turned over, illuminated and temperature controlled, and turned over 3 times a day;

S5. When the black soldier fly larvae are put into the feed for 5 days, the average feeding is 3 times a day, and the amount of each feeding is 25 times the amount of the black soldier fly larvae. The change of kitchen waste, when the raw materials in the breeding tank become fluffy and granular, and there is no change in the amount within 3 hours, it can be judged that the raw materials have been eaten;

S6. Use the light-avoiding characteristics of black soldier fly larvae to separate the insect material: adjust the light intensity of the lighting equipment to more than 1000Lux, the larvae will escape to the bottom layer of the insect material mixture in the breeding tank, and then remove the upper layer of waste. The worm feed mixture below can be separated from the worm feed using a mechanical sieve.

Finally, after sieving the raw materials after feeding, the residual weight of the kitchen waste in the breeding tank is counted (with the undegraded large pieces of residual material as the statistical standard), and the feeding efficiency of the kitchen waste and the black soldier fly larvae are calculated. total fresh weight.

Method 3: Only give temperature control treatment

The cultivation equipment in this experiment is the same as that of Example 1, and at the same time, an infrared heater is provided directly above the cultivation tank, and/or a circulating water pipe is provided at the bottom of the cultivation tank. The method for regulating the feeding of black soldier fly larvae specifically includes the following steps:

S1. First put the kitchen waste into the culture tank with a thickness of 15cm, and then put 3-day-old black soldier fly larvae into the culture tank. The mass ratio of the amount of black soldier fly larvae to the amount of kitchen waste It is 3:100, after 5 hours of feeding (about 3 cm of feeding, at this time the temperature in the kitchen waste exceeds 35 °C and the black soldier fly larvae are escaping), start the turning and throwing equipment;

S2, with reference to the patented method of Patent Bulletin No. CN110432230A (a method for culturing black soldier flies based on culturing equipment), complete a flipping and tossing according to conventional breeding regulations;

S3. Turn on the infrared heater in a high temperature weather (32°C) to perform cyclic temperature control treatment on the surface of the raw material. The temperature is controlled once every 15 minutes, and the temperature is controlled for 3-5 minutes each time, so that the temperature of the raw material surface is maintained at 33-35 In the weather with low temperature (10℃), the cooling water is introduced into the circulating water pipe, and the bottom of the raw material is subjected to circulating temperature control treatment. The temperature at the bottom is maintained between 7-9 degrees;

In the weather with high temperature, the temperature at the bottom of the raw material is the highest, the temperature in the middle of the raw material is the second, and the temperature on the surface of the raw material is the lowest. At this time, the temperature in the middle of the raw material is relatively the lowest, so that the black soldier fly larvae concentrate in the middle of the raw material for feeding, and improve the efficiency of feeding; in the weather with low temperature, because the temperature at the bottom of the raw material is the highest, the black soldier fly larvae feed Generally, they will gather at the bottom of the raw material for feeding. When the bottom of the raw material is cooled, the temperature in the middle of the raw material is relatively the highest, so that the black soldier fly larvae can also be concentrated in the middle of the raw material for feeding.

S4, according to the method of steps S2 and S3, tossing and temperature-controlling the kitchen waste, and tossing 3 times a day;

S5. When the black soldier fly larvae are put into the feed for 5 days, the average feeding is 3 times a day, and the amount of each feeding is 25 times the amount of the black soldier fly larvae. The change of kitchen waste, when the raw materials in the breeding tank become fluffy and granular, and there is no change in the amount within 3 hours, it can be judged that the raw materials have been eaten;

S6. Use the light-avoiding characteristics of black soldier fly larvae to separate the insect material: adjust the light intensity of the lighting equipment to more than 1000Lux, the larvae will escape to the bottom layer of the insect material mixture in the breeding tank, and then remove the upper layer of waste. The worm feed mixture below can be separated from the worm feed using a mechanical sieve.

Finally, after sieving the raw materials after feeding, the residual weight of the kitchen waste in the breeding tank is counted (with the undegraded large pieces of residual material as the statistical standard), and the feeding efficiency of the kitchen waste and the black soldier fly larvae are calculated. total fresh weight.

Method 4: Regular Method

The specific experimental method is the same as the conventional method in Example 1.

From the experimental results in Table 3, it can be seen that in the weather with high or low temperature, even if the black soldier fly larvae are stimulated by light, the feeding efficiency of the larvae on the kitchen waste still fails to achieve a good effect. At the same time, the temperature control treatment on the surface or bottom of the raw material can further improve the feeding efficiency of larvae, but the temperature control treatment alone does not significantly improve the feeding efficiency; it shows that when the external temperature is too high or too low, The use of temperature control treatment to supplement light stimulation can more effectively improve the feeding effect of black soldier fly larvae, effectively solve the problem of incomplete raw material treatment, and can obtain better feeding effect of black soldier flies and higher fresh insect weight. And can shorten the time of garbage disposal.

Table 3 Feeding situation of black soldier fly larvae under the condition of high temperature

Table 4 Feeding situation of black soldier fly larvae under the condition of low temperature

The embodiments of the present invention have been described above in detail, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions and alterations to these embodiments still fall within the protection scope of the present invention.

Claims (10)

1. The method for regulating and controlling the feeding raw materials of the black soldier fly larvae is characterized in that illumination equipment is additionally arranged above or/and below a black soldier fly breeding tank, and the position and the raw material depth of the black soldier fly larvae are changed by adjusting the illumination intensity of the illumination equipment in the feeding process of the black soldier fly larvae.

2. The method of claim 1, wherein the lighting apparatus produces a light intensity of less than 500L ux or/and produces a light intensity of greater than 1000L ux.

3. The method for regulating and controlling feeding raw materials of hermetia illucens larvae according to claim 1, wherein the culture tank is provided with a turning device, and the illumination intensity of the illumination device is adjusted after the turning device is turned in the culture tank.

4. The method of claim 3, wherein the intensity of the illumination device is adjusted to be greater than 1000L ux when the water content of the material is greater than 60%, and the material is turned 3-5 times per day using a turning device.

5. The method of claim 3, wherein the intensity of light from the light device is adjusted to greater than 1000L ux when the water content of the material is below 60% and the internal temperature is above 35 ℃, and the material is turned 2-3 times per day using the turning device.

6. The method of claim 3, further comprising the step of adjusting the temperature of the bottom and/or surface of the feed in the holding tank.

7. The method for regulating feeding raw materials of hermetia illucens larvae according to claim 6, wherein a temperature control device is further arranged above and/or at the bottom of the culture tank.

8. The method for regulating feeding raw materials of hermetia illucens larvae, according to claim 4 or 5, is characterized by comprising the following steps:

s1, starting turning equipment after larvae are put on raw materials and feed for 3-5 h;

s2, completing one-time turning according to a conventional breeding rule;

s3, adjusting the illumination intensity of the illumination equipment to be more than 1000L ux, and illuminating for 1-2 h;

s4, repeating the steps S2 and S3 until the ingestion is finished.

9. The method for regulating feeding materials of hermetia illucens larvae, according to claim 7, comprising the following steps:

s1, starting turning equipment after larvae are put on raw materials and feed for 3-5 h;

s2, completing one-time turning according to a conventional breeding rule;

s3, adjusting the illumination intensity of the illumination equipment to be more than 1000L ux, and irradiating for 1-2h, or/and opening the temperature control equipment to perform circulating temperature control treatment, wherein the temperature is controlled once every 10-30min, and the temperature is controlled for 1-10min each time;

s4, repeating the steps S2 and S3 until the ingestion is finished.

10. The method for regulating and controlling feeding raw materials of hermetia illucens larvae, according to claim 1 or 9, is characterized in that the raw materials are judged to be completely fed when the raw materials in the culture tank are fluffy and granular and do not change in quantity within 2-4 hours.