RU220075U1 - NET FOR BREEDING OF BLACK LION FLY MATERIALS - Google Patents

Abstract

The utility model relates to biotechnology, in particular to devices for breeding Black Lion fly larvae. The mesh for breeding Black Lion fly larvae is a construction in the form of a rectangular parallelepiped with a hole for a sleeve and a hole along the perimeter of which a zipper is sewn in, forming a valve when opening and closing, while the bottom is made of fabric with a density of at least 80 g/m ² . The technical result is to increase wear resistance and durability, reduce the time to clean the mesh from excrement, and reduce the loss of eggs.

Description

The utility model relates to biotechnology, in particular to devices for breeding Black Lion fly larvae.

A method and device for breeding and collecting insect larvae are known from the prior art (patent WO 2019154563, publ. 08/15/2019), which include the use of a cage made entirely of gauze mesh. The cage is a cuboid with loops at all corners for stretching between eight hooks attached to an outer frame and contains a sleeve-like opening.

The closest analogue is a mesh enclosure with a mesh bottom and a hole for a tunnel, as well as a zippered hole (Dortmans B.M.A., Egger J., Diener S., Zurbrügg C., 2021, Black Soldier Fly Biowaste Processing - A Step -by-Step Guide, 2nd Edition Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland, p.10).

The disadvantages of the above solutions are insufficient wear resistance, fragility of devices, a large amount of time to clean the mesh from excrement, large losses of eggs.

The task to be solved by the claimed utility model is the development of a device for breeding the larvae of the Black Lion fly.

This problem is solved due to the fact that the mesh for breeding Black Lion fly larvae is a structure in the form of a rectangular parallelepiped with a hole for the sleeve and a hole along the perimeter of which a zipper is sewn in, forming a valve when opening and closing, while the bottom is made of fabric with a density of at least 80 g/ ^m2 .

The technical result is to increase the wear resistance and durability of the device. An additional technical result is a reduction in the time for cleaning the mesh from excrement and a decrease in the loss of eggs.

The Black Lion Fly (Hermetia illucens) is a large fly from the family Stratiomyidae (Diptera), a natural inhabitant of the tropics, subtropics and warm temperate zone of America. The insect is one of the few invertebrate species capable of year-round development in a pure culture in a closed space of artificial conditions, which allows the species to be used for biotechnological purposes. The insect gained wide popularity due to the highly efficient bioconversion of various solid organic wastes, as well as the high nutritional value of the larvae, which can be used in feeding farm animals and aquaculture. The larva of the Black Lion fly is distinguished by its ability to absorb almost any biowaste. The larva contains a large amount of amino acids, which have a beneficial effect on the growth and development of farm animals and birds and confirm the possibility of using dry larvae as a feed additive.

In this utility model, the concept of "dark mesh" refers to a mesh made of opaque fabric in which the process of transformation of the pupa into an adult insect takes place and from which the hatched adults fly into the light mesh through a tunnel. "Light Mesh" is the claimed mesh of white mesh fabric. The tunnel is a mesh sleeve connected to each other on one of the walls of a light mesh with a similar sleeve of a dark mesh.

The utility model is used in the breeding of Black Lion fly larvae and is designed to accommodate flies during mating and laying eggs.

The essence of the utility model is illustrated in Fig. 1.

The figure indicates: 1 - light mesh; 2 - sleeve; 3 - valve with a zipper; 4 - fastener; 5 - the bottom of the grid.

Grid 1 for breeding fly larvae Black soldier fly is a construction in the form of a rectangular parallelepiped with a round hole for attaching to a dark net through sleeve 2 and a rectangular hole for collecting fly eggs inside the net 1, closed by a U-shaped valve with a zipper 3. Valve 3 is formed when opening and closing. The walls and top of the structure are made of mesh fabric, and the bottom 5 can be made of Duspo fabric.

Optimal geometric parameters may have the following dimensions, which are not limiting. Mesh 1 is 70 cm long, 70 cm wide and 140 cm high, sleeve 2 is 50 cm long with a diameter of 40 cm. see Sleeve 2 serves to combine the nets with each other for the period of filling the light net 1 with flies from the dark net. Since light is an attractive factor for adult flies, the flies fly out into the light along sleeve 2 from the dark mesh into light mesh 1. In this case, sleeve 2 protects the flies and prevents them from scattering around the room. After filling the light mesh 1, the sleeves are separated and closed by tying the edge of the sleeve 2 into a knot. Between themselves, the sleeves of dark and light 1 grids are connected by jointly turning the edges and securing with clerical clips. Valve 3 zipper has two pawls and fastens without gaps. Eight fasteners 4 with grommets are sewn to the corners of the mesh 1 from the outside. Elastic bands are sewn in the places where the eyelets are fastened. Each side of mesh 1 is stitched to the adjacent edge. The seam forms a rib. The shape of a rectangular parallelepiped is given to the grid 1 due to its stretching at the top and bottom corners during installation.

The proposed mesh 1 for breeding Black Lion fly larvae does not have elements that can be considered by flies as acceptable places for laying (elements of a load-bearing frame, right hard corners (wall, floor joints)). This causes the flies to lay their eggs only in the egg-laying and collecting devices. The mesh bottom of the net may also be considered acceptable by flies, and they may lay their eggs directly on the bottom of the net. At the same time, it is not possible to remove the eggs from the grid without damage, which is why the bottom 5 of the grid must be made of dense and durable fabric. Thus, because it is not necessary to clean eggs from non-laying surfaces, the time to collect eggs is reduced and the wastage of eggs not laid on egg-laying devices is reduced, leading to an increase in the number of eggs collected.

For the bottom 5, a dense fabric is used, for example, a jacket / raincoat fabric Duspo / DEWSPO 240T, in / MILKY, burgundy, with a density of 80 g / m ² . This is a textured matte dense weave fabric, consisting of 100% polyester synthetic fibers, waterproof. For the remaining walls, top and sleeve 2, any mesh fabric with a cell of no more than 0.3 cm is used, preferably synthetic, white. Fasteners 4 at the corners of the mesh 1 are made of rubberized fabric (3 cm wide elastic can be used) with eyelets installed. The size of the eyelets corresponds to the size of the fasteners (hooks) used. For the manufacture of the opening valve 3, a plastic zipper is used.

Since flies in the course of their life activity excrete excrement, which not only stick to the surface, but also serve as a medium for the life of bacteria, including pathogens, the mesh 1 itself and the surfaces on which the excrement has fallen must be cleaned in a timely manner. In the prior art cleaning methods, the mesh, floor and/or table surfaces are wiped with a cloth or sponge containing detergents and then with clean water. This procedure takes at least ten minutes of time per grid every four days. The proposed grid 1 is also cleaned in a washing machine, and the presence of an excrement-impervious bottom 5 allows you to keep the surface under the grid 1 clean all the time.

When making the bottom 5 of the grid 1 from a dense fabric, its wear resistance and durability increase, since the dense fabric does not bulge when baits, drinkers and devices for laying eggs are installed on it, and also the dense bottom 5 does not allow the surface under the grid 1 to be contaminated with excrement of flies, and it takes less time to clean it up.

The utility model is applied as follows.

Grid 1 for breeding fly larvae Black soldier fly is stretched by the corners of the upper part and hung on a cross-shaped frame by hooks using fasteners 4, it is also stretched by the corners of the lower part and hooked to fasteners 4 by hooks fixed at an appropriate distance on the table top. Thus, the shape of a rectangular parallelepiped is formed. Grid 1 is installed near the dark grid. The sleeves of the proposed light and dark grids are interconnected in such a way that they form a tunnel. Opposite the sleeve 2, a lamp is installed, the light from which makes the flies fly from the dark mesh to the light mesh 1 through the formed tunnel. After filling the mesh 1 with the required number of flies, the sleeves are separated and closed by tying the end of the sleeve 2 into a knot. Next, mesh 1 is installed in a rack, where a certain temperature, humidity and lighting are maintained. In this case, a drinking bowl, bait and devices for laying eggs are placed inside the grid 1. As devices fill up, old ones are removed and new ones are installed. At the end of the masonry, mesh 1 is removed from the rack with all contents. Flies are immobilized by spraying a number of chemicals or cooling, and then the mesh 1 is freed from flies, drinkers, baits. Empty mesh 1 is washed in a household washing machine, dried and can then be used in the next cycle.

Thus, the advantages of the proposed net 1 are the simplification of emptying and cleaning of the net 1, the exclusion of contamination of the surfaces under the net 1, the absence of elements that attract flies for laying in addition to the installed devices for laying and collecting eggs, the durability of the use of the net 1.

Claims (2)

1. Grid for breeding Black soldier fly larvae, which is a construction in the form of a rectangular parallelepiped with a hole for a sleeve and a hole along the perimeter of which a zipper is sewn in, forming a valve when opening and closing, characterized in that the bottom is made of fabric with a density of at least 80 g / m ² . 2. Grid for breeding larvae of the Black Lion fly according to claim 1, characterized in that Duspo material is used as the fabric for the bottom.