An experimental quail grouping and hatching egg tray device

Abstract

The present invention discloses a quail grouping incubation egg tray device for experiments, which includes a quail incubation egg tray for experiments, an upper cover and a supporting net. The present invention meets the requirements for grouping incubation of quails for experiments and also complies with the requirements of the national guidelines for environmental safety evaluation tests of chemicals and pesticides. The present invention has strong operability, a simple equipment structure, and is convenient for assembly, manufacture and maintenance. Through practical operation, it saves experimental time and improves work efficiency.

Description

Technical Field

[0001] The present invention relates to a quail grouping incubation egg tray device for experiments, which is applicable to the grouping incubation of quails used in experiments for the reproduction tests of chemicals and pesticides. Background Art

[0002] Birds are important members of the ecosystem and are the most common species indicating changes in environmental quality. In 1962, American ecologist Rachel Carson compiled and published "Silent Spring", which deeply revealed the serious harm of the pesticide DDT to the ecological environment, especially to birds, directly promoting the birth of the US EPA and initiating the process of pesticide environmental management. According to the Chemical Abstracts of the United States, there are as many as 7 million kinds of chemicals in the world currently, among which more than 100,000 kinds have become commercial products on the market, and more than 70,000 kinds are frequently used. Now, more than 1,000 new chemicals appear in the world every year. While these chemicals improve people's quality of life, they will inevitably cause harm to the environment. Therefore, in the environmental registration management of pesticides, before a new pesticide product is registered, it is necessary to carry out ecological toxicological studies on pesticides for indicator species in the environment. The bird reproduction test is to evaluate the impact of pesticides on the toxicity of birds after they have eaten food containing pesticides for a long time, and to provide environmental toxicological data for pesticide registration and use.

[0003] The bird reproduction test is carried out within a test period of not less than 20 weeks. The test birds are fed with test foods containing different concentrations of the test substance, and the control group is fed with untreated basic food. During the test period, by regulating the photoperiod, the test birds are induced to lay eggs. The eggs produced within 10 weeks are collected and placed in an artificial incubator. After the young birds are hatched, they are fed with basic food without the test substance for 14 days. The differences in indicators such as the adult bird mortality rate, egg production, number of cracked eggs, eggshell thickness, embryo development rate, hatching rate, and young bird survival rate between the treatment group and the control group are compared to determine the LOEC and NOEC.

[0004] And the incubation of fertilized eggs is one of the important links. At present, there are many commercial bird incubators and incubation egg tray devices, with reasonable structures and strong functional pertinence. However, test quail incubation egg tray devices available in laboratories are very rare, and the current commercial incubation egg tray devices do not meet the needs of grouping incubation. And redesigning a new incubator for the test is too costly. Based on the existing general incubator, this patent improves the incubation egg tray to meet the grouping incubation of fertilized eggs with different concentrations in the test. Summary of the Invention

[0005] Object of the Invention: The technical problem to be solved by the present invention is to provide a quail grouping incubation egg tray device for experiments in view of the deficiencies of the existing technical devices.

[0006] To solve the above technical problems, the present invention discloses a quail grouping hatching egg tray device for experiments, including an upper cover at the top, which is a plastic mesh structure or a cloth mesh structure, and is directly fixed around with buckles or clips, capable of preventing the escape of quails for experiments. In the middle is the egg tray for fertilized eggs of experimental quails, with a total of two layers including an egg position layer and a heightening layer. The heightening layer includes a first longitudinal partition and a first transverse partition connected to each other, and the egg position layer includes a second longitudinal partition and a second transverse partition connected to each other;

[0007] According to different hatching requirements, the specifications and sizes of the egg trays are slightly different and are matched with existing general incubators. The bottom is a supporting net to prevent quails for experiments from falling into the incubator.

[0008] In the present invention, the egg tray is preferably made of polyethylene or polypropylene materials, can be molded in one time, is not easy to deform, and is convenient for fixing fertilized eggs in the grids.

[0009] In the present invention, the upper cover and the lower supporting net are preferably mesh structures. The size of the mesh holes of the upper cover is about 5mm*5mm, and the size of the mesh holes of the supporting net is about 3mm*3mm. The gas in the incubator can be exchanged normally up and down, ensuring good ventilation in the hatching environment.

[0010] In the present invention, the egg tray is preferably 60-90mm high, providing a basic living space after the chicks break out of their shells.

[0011] In the present invention, the egg tray is preferably 495mm long and 360-380mm wide. It can be divided into several grids according to the needs of the experiment. For the grouping hatching of Japanese quails, 24 grids are preferably used, and each grid can hatch 6-12 quail eggs, meeting the needs of different concentration groups in the experiment.

[0012] In the present invention, the first longitudinal partition and the first transverse partition are connected by a detachable slot structure.

[0013] In the present invention, the second longitudinal partition and the second transverse partition are connected by a detachable slot structure.

[0014] Beneficial effects: The present invention meets the hatching requirements of quails for experiments. The hatching egg tray device can hatch quails for experiments with different concentrations at the same time, and at the same time meets the requirements of the national relevant test guidelines for environmental safety evaluation of chemicals and pesticides.

[0015] Specifically, the advantages of the present invention include:

[0016] 1. This device makes full use of existing general incubators. By improving the hatching egg tray, it meets the needs of environmental safety tests for pesticide registration at the lowest cost. At the same time, the internal space of the incubator is fully utilized without reducing the hatching capacity of the incubator.

[0017] 2. This device can incubate experimental quails in multiple concentration groups simultaneously, making it easy to distinguish and without confusion.

[0018] 3. This device provides sufficient incubation space for experimental quails, reducing the impact on experimental results.

[0019] 4. The method of this device is simple and easy to implement, highly operable, and saves incubation operation time.

[0020] 5. This device has a simple structure and is convenient for assembly, manufacturing, and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following further specifically describes the present invention in conjunction with the drawings and specific embodiments, and the above and / or other advantages of the present invention will become clearer.

[0022] Figure 1 It is a schematic structural diagram of an egg tray device for grouped incubation of experimental quails.

[0023] Figure 2 It is a schematic internal structural diagram of an egg tray device for grouped incubation of experimental quails.

[0024] Figure 3 It is a schematic structural diagram of the heightening layer.

[0025] Figure 4 It is a schematic structural diagram of the egg position layer.

[0026] Figure 5 It is a schematic diagram of the connection mode of the second longitudinal partition and the second transverse partition.

[0027] Figure 6 It is a schematic diagram of the slot structure between the longitudinal partition and the transverse partition. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] As Figures 1 to 6As shown in the figure, the present invention discloses an experimental quail grouped hatching egg tray device, which includes an upper cover 1 at the top, which is a plastic mesh structure or a cloth mesh structure, with the mesh size of about 5mm * 5mm, and is directly fixed with buckles or clips around, which can prevent the escape of experimental quails. In the middle is the egg tray for fertilized eggs of experimental quails. The egg tray is 495mm long and 360 - 380mm wide. According to the needs of the experiment, it can be divided into several squares. For example, Japanese quails are preferably divided into 24 squares, and each square can hatch 6 - 12 quail eggs. One hatching egg tray device can hatch fertilized eggs of 24 concentration groups at a time, meeting the needs of different concentration groups in the experiment; inside the egg tray, it is divided into two layers, namely the egg position layer 2 and the height increasing layer 3. The height increasing layer 3 includes a first longitudinal partition 4a and a first transverse partition 5a connected to each other. The egg position layer 2 includes a second longitudinal partition 4b and a second transverse partition 5b connected to each other; the first longitudinal partition 4a and the first transverse partition 5a are connected through a detachable slot structure, and the second longitudinal partition 4b and the second transverse partition 5b are connected through a detachable slot structure.

[0029] The egg position layer 2 is the same as a general hatching egg tray and normally places fertilized eggs for hatching. One fertilized egg is placed in each grid. When placing, the quail eggs should be kept with the big end up and the small end down to ensure that the fertilized eggs will not shake during hatching; the height increasing layer 3 is divided into several small grids, and each grid is an independent space, providing a living space for the hatched chicks of the same group and ensuring that the hatched chicks of different groups will not be mixed together. The height of the egg tray is 60 - 90mm, providing a basic living space for the hatched chicks. The bottom is a supporting net with a mesh size of about 3mm * 3mm to prevent experimental quails from falling into the incubator.

[0030] According to different hatching requirements, the specifications of the egg tray are slightly different. This hatching egg tray is basically matched with general incubators on the market, and there is no need to customize the incubator anymore.

[0031] Example 1

[0032] This example is a study on the impact of a technical material on bird reproduction tests. This project mainly determines the impact of a technical material on the reproductive ability of birds (Japanese quails, Coturnix coturnix Japonica). The test period is about 6 months, and 40mg a.i.·kg -1 饲料 、200mg a.i.·kg -1 饲料 and 1000mg a.i.·kg -1 饲料Three treatment groups and one blank control group were set up, with 12 replicates in each group. Two Japanese quails (one male and one female) were placed in each cage. The birds in the treatment groups were fed with feed containing the test substance (test food) every day, while the birds in the blank control group were fed with normal feed (basic food) every day. Eggs were collected during the breeding and hatching stage (10 weeks), and the number of eggs laid, the number of broken eggs, and the eggs for incubation were recorded. The eggshell thickness was measured. The collected eggs were incubated once a week, and the fertilization rate and embryo development rate were observed and measured during the incubation period. The hatched chicks were continuously raised for 14 days, and indicators such as the 14-day survival rate and body weight of the chicks were observed and recorded.

[0033] 1 Test materials

[0034] 1.1 Test quails

[0035] Japanese quails (Coturnix coturnix Japonica) were selected for the test. The test bird species were self-bred by the National Environmental Protection Pesticide Environmental Assessment and Pollution Control Laboratory.

[0036] 2 Test methods

[0037] For the reproductive toxicity test of a technical material, one blank control group and three treatment groups with dosages of 40 mg a.i.·kg -1 饲料 , 200 mg a.i.·kg -1 饲料 and 1000 mg a.i.·kg -1 饲料 were set up. There were 12 replicates in each group, a total of 48 cages, and 2 quails (one male and one female) were placed in each cage, for a total of 96 quails. The test quails were randomly assigned to each test cage. The test period was about 6 months, including four stages: the adaptation period, the short-day exposure period, the light-stimulus exposure period, and the breeding and hatching period. Among them, the breeding and hatching period was 10 weeks, and incubation was carried out every week. Before incubation, the eggs stored weekly were taken out and checked under the lighting lamp for eggshell cracks. The egg production, broken eggs, and eggs for incubation were counted. Six to eleven days after the start of incubation, candling was performed to observe the embryo development. Generally, the incubation time was about 17 - 18 days. One to two hours after the chicks hatched, they were taken out and placed in the brooding room for rearing. The embryo development rate, hatching rate, the number of normally developed embryos during hatching, and the number of 14-day-old surviving chicks were counted.

[0038] 3 Test results

[0039] 3.1 Effects on the embryo development rate and hatching rate of test quails

[0040] The effects of a technical material on the embryo development rate and hatching rate of Japanese quails are shown in the following table.

[0041] Table 1 Effects of a technical material on the embryo development rate and hatching rate of Japanese quails

[0042]

[0043]

[0044] Note: 1) The same letter marked in the same column indicates no significant difference (p>0.05).

[0045] As can be seen from the above table, the average embryo development rates of the blank control group, 40 mg a.i.·kg -1 饲料 , 200 mg a.i.·kg -1 饲料 and 1000 mg a.i.·kg -1 饲料 for the three treatment groups were 99.3%, 98.8%, 99.4% and 99.0% respectively; there was no significant difference in the embryo development rates between the blank control group and the three treatment groups (p>0.05); for the blank control group, 40 mg a.i.·kg -1 饲料 , 200 mg a.i.·kg -1 饲料 and 1000 mg a.i.·kg -1 饲料 the average hatching rates of the three treatment groups were 92.9%, 88.8%, 88.7% and 92.6% respectively, and there was no significant difference in the hatching rates between the blank control group and the three treatment groups (p>0.05).

[0046] 4 Results and Discussion

[0047] Throughout the entire test period (20 weeks), at concentrations of 40 mg a.i.·kg -1 饲料 , 200 mg a.i.·kg -1 饲料 and 1000 mg a.i.·kg -1 饲料 there were no significant differences in the embryo development rates and hatching rates of a technical material for birds (Japanese quail, Coturnix coturnix Japonica).

[0048] The present invention provides a quail grouping and hatching egg tray device for experiments. There are many methods and ways to specifically implement this technical solution. The above description is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. Each component not clearly defined in this embodiment can be implemented by existing technologies.

Claims

1. An experimental quail grouping and hatching egg tray device, characterized in that It includes an upper cover (1), an egg tray and a supporting net; The egg tray is provided with two layers, namely an egg position layer (2) and a height increasing layer (3). The height increasing layer is located above the egg position layer (2); the upper cover (1) covers above the height increasing layer (3), and the supporting net is located below the egg position layer (2); The height increasing layer (3) includes a first longitudinal partition (4a) and a first transverse partition (5a) which are connected to each other. The egg position layer (2) includes a second longitudinal partition (4b) and a second transverse partition (5b) which are connected to each other; The height increasing layer (3) is provided with more than two movable positions through the first longitudinal partition (4a) and the first transverse partition (5a); The egg position layer (2) is provided with more than four egg positions through the second longitudinal partition (4b) and the second transverse partition (5b); The movable positions of one height increasing layer (3) correspond to at least more than two egg positions of the egg position layer (2); The first longitudinal partition (4a) and the first transverse partition (5a) are connected through a detachable slot structure (6); the second longitudinal partition (4b) and the second transverse partition (5b) are connected through a detachable slot structure (6); A groove is arranged on the side of the first longitudinal partition (4a), and the first transverse partition (5a) is inserted into the groove of the first longitudinal partition (4a) for fixation; a groove is arranged on the side of the second longitudinal partition (4b), and the second transverse partition (5b) is inserted into the groove of the second longitudinal partition (4b) for fixation; A groove is arranged on the side of the first transverse partition (5a), and the first longitudinal partition (4a) is inserted into the groove of the first transverse partition (5a) for fixation; a groove is arranged on the side of the second transverse partition (5b), and the second longitudinal partition (4b) is inserted into the groove of the second transverse partition (5b) for fixation.

2. The quail grouping and hatching egg tray device for experiments according to claim 1, wherein: The upper cover (1) is a mesh structure and is made of plastic or cloth material.

3. The experimental quail grouping and hatching egg tray device according to claim 2, characterized in that: The mesh size of the upper cover (1) is 5mm * 5mm, and the gas inside the egg tray can be exchanged up and down.

4. The experimental quail group hatching egg tray device according to claim 3, wherein: The supporting net is a mesh structure, and the mesh size is 3mm * 3mm.

5. The quail grouping and hatching egg tray device for experiment according to claim 4, characterized in that: The egg tray is 495mm long, 360 - 380mm wide and 60 - 90mm high.

6. The quail grouping and hatching egg tray device for experiments according to claim 5, characterized in that: The four sides of the upper cover (1) are connected to the height increasing layer (3) through buckles or clips.

7. The experimental quail grouping and hatching egg tray device according to claim 6, characterized in that: The egg position layer (2) and the supporting net are fixed by bonding.

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