KR101687782B1 - Poor layer sorting method - Google Patents
Poor layer sorting method Download PDFInfo
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- KR101687782B1 KR101687782B1 KR1020150086480A KR20150086480A KR101687782B1 KR 101687782 B1 KR101687782 B1 KR 101687782B1 KR 1020150086480 A KR1020150086480 A KR 1020150086480A KR 20150086480 A KR20150086480 A KR 20150086480A KR 101687782 B1 KR101687782 B1 KR 101687782B1
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- South Korea
- Prior art keywords
- cage
- eggs
- unit
- egg
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 235000013601 eggs Nutrition 0.000 claims abstract description 113
- 241000287828 Gallus gallus Species 0.000 claims abstract description 30
- 235000013330 chicken meat Nutrition 0.000 claims abstract description 30
- 239000002253 acid Substances 0.000 claims abstract description 29
- 238000012546 transfer Methods 0.000 claims abstract description 25
- 210000000349 chromosome Anatomy 0.000 claims abstract 2
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims 2
- 206010020559 Hyperacusis Diseases 0.000 claims 1
- 229960005070 ascorbic acid Drugs 0.000 claims 1
- 235000010323 ascorbic acid Nutrition 0.000 claims 1
- 239000011668 ascorbic acid Substances 0.000 claims 1
- 238000010187 selection method Methods 0.000 claims 1
- 238000012216 screening Methods 0.000 abstract description 12
- 230000002759 chromosomal effect Effects 0.000 abstract 1
- 239000003550 marker Substances 0.000 description 24
- 238000004519 manufacturing process Methods 0.000 description 9
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 244000144977 poultry Species 0.000 description 5
- 235000013594 poultry meat Nutrition 0.000 description 5
- 241000271566 Aves Species 0.000 description 4
- 230000006399 behavior Effects 0.000 description 4
- 201000010099 disease Diseases 0.000 description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 4
- 229910000462 iron(III) oxide hydroxide Inorganic materials 0.000 description 4
- 230000002503 metabolic effect Effects 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 238000009395 breeding Methods 0.000 description 3
- 230000001488 breeding effect Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 201000001421 hyperglycemia Diseases 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 2
- 229920001817 Agar Polymers 0.000 description 1
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- 240000006829 Ficus sundaica Species 0.000 description 1
- 102100039856 Histone H1.1 Human genes 0.000 description 1
- 102100039855 Histone H1.2 Human genes 0.000 description 1
- 101001035402 Homo sapiens Histone H1.1 Proteins 0.000 description 1
- 101001035375 Homo sapiens Histone H1.2 Proteins 0.000 description 1
- 241000700159 Rattus Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 230000004520 agglutination Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 241001233037 catfish Species 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013345 egg yolk Nutrition 0.000 description 1
- 210000002969 egg yolk Anatomy 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 230000037417 hyperactivation Effects 0.000 description 1
- 208000013403 hyperactivity Diseases 0.000 description 1
- 230000003345 hyperglycaemic effect Effects 0.000 description 1
- 230000001969 hypertrophic effect Effects 0.000 description 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000007523 nucleic acids Chemical class 0.000 description 1
- 102000039446 nucleic acids Human genes 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 235000018343 nutrient deficiency Nutrition 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 210000003200 peritoneal cavity Anatomy 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K43/00—Testing, sorting or cleaning eggs ; Conveying devices ; Pick-up devices
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Housing For Livestock And Birds (AREA)
Abstract
The present invention particularly relates to a ferrous-acid-based sorting system and a ferrous-acid-based sorting method comprising means for simply sorting out only a ferrous-acid system from a laying hensystem, comprising a cage portion (11) A transfer unit 20 for transferring eggs discharged from the cage unit 10 and a connection unit 30 for guiding the eggs discharged from the cage unit 10 to the transfer unit 20, And a sensor unit (40) installed in the connection unit (30) for recognizing and counting the number of eggs discharged to the individual cages (11) The method comprising: a first step of stopping the transfer unit 20 while the eggs are discharged from the transfer unit 10 to the transfer unit 20; A second step of counting the number of eggs in the cage and counting the number of cages in which the amount of eggs discharged is below the reference value; The fourth step is to repeat the first and second steps for the chickens in the third step and the third step to discriminate the chromosomal system. Thus, it takes a great deal of time and effort to sort out the chromosome And a method of screening a hydrogametric system that can solve the problem of being able to solve the problem.
Description
The present invention relates to a ferrous acid-based screening method, and in particular, to provide a ferric acid-based screening method that allows only a ferric acid system to be finally selected.
There are approximately 68 million laying hens raised nationwide at poultry farms.
Chickens that produce eggs for the purpose of obtaining eggs are called laying hens. Young chickens for breeding purposes are called breeding, and there are about 59 million laying hens except for the breeding system nationwide.
About 14 percent of the laying hens, or 14.28 million, are birds that do not lay eggs or produce less than average birds. These chickens are called hyangsan.
There are many factors besides diseases that can not lay eggs. These and the mountains are being raised together with the laying hens because they are difficult to find even when they do not lay eggs.
The amount of feed consumed by this metabolic system is about 48,000 tons per year, which is equivalent to about 21.6 billion won in terms of amount of feed.
In other words, the failure to screen the surveillance system would result in an annual loss of KRW 21.6 billion in the domestic poultry industry.
Therefore, it is urgently required to remove the hyperacute from the laying hens.
However, most of the methods for extracting the hyperglycemic system from the laying hens have been through observing closely the amount of feed, the eating of the feed, or the behavior when treating the person.
It is difficult to distinguish the hyperglycemia due to close observation, and it is hard to find out unless it is an expert. Also, it is necessary to observe a large number of chickens individually to select the hyperglycemia.
In order to solve such a problem, there has been proposed a system for monitoring a laying hens in a high-level upright type scattering system cage proposed in the Japanese Patent Laid-Open No. 10-2007-0095250 (published on September 28, 2007) have.
The above-described prior art 'laying-table monitoring system in a high-standing upright type scattering system cage' is composed of a video camera, a camera driving device, a position sensor and a communication unit, a monitoring device and a central monitoring device, The apparatus is capable of automatically discriminating the sick and dead systems by the program having the image processing algorithm incorporated therein, and thus it is advantageous to solve the problem that a highly skilled expert, who has to invest a great deal of time and effort, .
However, there are many factors besides diseases that cause the egg to not lay eggs.
In other words, there are many factors influencing the spawning of chickens, including not only diseases but also the temperature of the house, increase of ammonia concentration due to bad ventilation, improper lighting management, rats, noise, visitors, feeding problems, nutrient deficiency,
Therefore, in order to algoritize all the possible metabolic behaviors including diseases of a large number of chickens, it takes a great deal of money to develop a program. In addition, in the above conventional art, there is a problem that a complicated device for driving a camera and recognizing a position is required And it is extremely difficult to algorithmically alleviate many scattering factors.
Therefore, a simpler and more inexpensive apparatus is required to identify the acid system, and it is possible to classify the acid system more reliably and effectively by judging whether or not it is the acid system by simply examining the output itself rather than observation of the behavior of the acid system A screening system and a screening system equipped with means are required.
Published Japanese Patent Application No. 10-2007-0095250 (published on September 28, 2007)
SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the problems of the prior art, and it is an object of the present invention to provide a method for selecting a fermentation broth capable of clearly verifying and selecting broth-acid egg production amount.
To achieve these objects and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a ferrous-acid sorting system comprising a cage unit in which a plurality of individual cages accommodating chickens are gathered, a transfer unit for transferring eggs discharged from the cage unit, And a sensor unit installed on the transfer unit or the connection unit to recognize and count the amount of eggs discharged from the individual cages.
Here, the cage portion is constituted by a scattering core consisting of individual cages in which two or more chickens are accommodated, and a hyperbole mechanism in which individual cages accommodating one chicken are gathered.
The connection part is provided with a first egg recognition sensor for sensing eggs discharged from the cage one by one.
In this case, the connection section may be provided with a narrow section having a width corresponding to one egg in a section where the first egg recognition sensor is installed.
In particular, a guide for guiding the eggs to the narrow section may be provided between the narrow sections of the cage.
In the meantime, markers for separating eggs discharged from the individual cages are installed on the conveyance unit in correspondence with the individual cage intervals.
The sensor unit may further include a gate fixedly installed at one point of the passage through which the conveyance unit passes and having a marker identifier for recognizing the marker.
In this case, the marker is an RFID tag including a body, an antenna coil, and a chipset, and the marker identifier is an RFID reader.
In addition, the gate may be provided with a second egg recognition sensor for sensing the eggs transferred to the transfer unit one by one.
Here, the first or second egg recognition sensor may be an infrared sensor, a photo sensor, or a pressure sensor.
On the other hand, the cage portion may preferably further include a breaker for preventing the egg from being discharged from the individual cage when the conveying portion is operated.
And a signal display device for displaying a calculation value of the arithmetic unit, wherein the signal receiving unit receives information recognized from the sensor unit, Egg emissions are counted and stored for each unit of time, total egg emissions of individual cages are summed over a period of time, and the sum of the egg emissions from individual cages is compared to the minimum standard to select the cages whose egg emissions are below the minimum standard And a control unit for identifying a cage that is estimated to include a metabolic acid.
Meanwhile, the ferrous-acid-based screening method using the ferric-acid-based screening system according to the present invention includes a first step of stopping the transferring part while the eggs are discharged from the cage to the transfer part for a predetermined time using the ferric-acid- A second step of counting the number of eggs discharged per each of the individual cages by operating the conveying unit after a lapse of time to identify a cage in which the amount of eggs discharged is less than a reference amount; In the third step, the chicken in the cage is housed in a cage of the peritoneal cavity, and in the third step, the first and second steps are repeated for the housed chickens, .
In this case, in the second step, the markers are installed in the transfer part in the same arrangement as the arrangement of the individual cages, and a unique number is assigned to each marker, so that when the transfer part is passed through the gate, Thereby counting the amount of eggs discharged per cage.
Meanwhile, in the second and fourth steps, when the conveyance unit is operated, the connection unit is cut off by the breaker.
In the second and fourth steps, the amount of egg discharge of the individual cage is counted and stored for each unit time by receiving the information recognized from the sensor unit, the egg discharge amount of each cage is summed for a predetermined period, And comparing the value obtained by adding the egg discharge amount of the egg with the minimum reference amount to discriminate the cage which is supposed to contain the over-acid system by selecting the cage whose egg discharge amount is less than the minimum reference amount.
Preferably, the second and fourth steps may further include storing separately counted egg quantity data from the first egg recognition sensor and the second egg recognition sensor, and comparing the stored data with each other, And a step of generating an output signal.
The ferrous-acid-based sorting method according to the present invention has the following effects.
First, it can be reliably verified whether or not it is an agglutination system by counting the egg production amount for each cage to select the agar system.
Secondly, since counting of egg production is performed automatically, it is possible to easily obtain data for discrimination of the pharyngeal system, unlike enormous amount of time and effort wasted by observing the behavior of many individual chickens in the past. It becomes easy.
Third, by accumulating egg production data, it is possible to observe the egg yolk process.
Fourth, a simple system can be completed by installing a simple sensor and connecting it to a PC or a microcontroller without installing complicated and expensive equipment.
1 is a conceptual diagram showing a basic configuration of a ferrous acid-based sorting system according to the present invention;
FIG. 2 is a plan view conceptually showing a conveyance unit in the present invention,
3A is a side view showing a gate in the present invention,
FIG. 3B is an enlarged view showing a marker in the present invention,
3C is a block diagram illustrating a marker recognition path in the present invention.
4A is a plan view conceptually showing a connection portion in the present invention,
FIG. 4B is a side view conceptually showing a connecting portion in the present invention,
5 is a conceptual diagram showing a hyperactivity in the present invention,
6 is a block diagram showing the operation of the control unit in the present invention,
7 is a block diagram showing the basic steps of the ferrous acid-based sorting method according to the present invention;
FIG. 8 is a block diagram showing the second step in detail according to the present invention;
Figure 9 is a block diagram further illustrating the lower step of Figure 8,
The specific structure or functional description presented in the embodiment of the present invention is merely illustrative for the purpose of illustrating an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention can be implemented in various forms. And should not be construed as limited to the embodiments described herein, but should be understood to include all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
First, the basic structure of the ferrous acid sorting system according to the present invention will be briefly described, and the operation of each structure and the interaction between the respective structures will be described in detail, and then the ferrous acid sorting method according to the present invention will be described in detail.
The basic structure of the perchloric acid sorting system according to the present invention is as shown in Fig. 1, in which a
In detail, the
The
The
The
As shown in FIG. 1, the conveying
The
4A and 4B conceptually show the
As shown in FIG. 4A, the
At this time, the
The reason why the narrow section S is installed is that the eggs are collected so as to be located at the central position of the section of the
That is, as shown in FIG. 4A, a sensor capable of detecting passage of eggs is provided in the
At this time, the sensor provided on the
The first
In particular, since the
As shown in FIGS. 4A and 4B, the
Prior to the description of the
The time for chickens to lay eggs is usually morning from dawn. Therefore, in the morning time during which the scattering of chickens is concentrated, the
The
And the amount of eggs discharged for each
However, several means suggested by the present invention are necessary for counting the number of eggs discharged from the
First, since the number of eggs discharged from each
That sort of thing And the
As shown in FIGS. 1 and 2, the
The
At this time, a mechanical or electronic recognition means is required to indicate that the
At this time, there may be various means for acting the
The RFID technology is a technology that allows a reader to recognize an object moving at a high speed without any error, and a unique signal given to the
The
The signal read from the reader is transferred to the middleware and digital signal converter shown in FIG. 3C and converted into a processable signal.
That is, counting is started with the signal received from the
At this time, since the
The counting and calculation of the egg quantity of each
The second
The
In addition, even if the total amount of spawning for a certain period is larger than the minimum reference amount, the calculation of the spawning amount can be used to classify the overweight system.
5 shows a configuration in which chickens in the
Here, H1, H6, and H15 in FIG. 5 do not indicate the
In other words, if the cages of H1, H6, and H15 in the laying hens were assumed to be accommodated, the chickens in H1, H6, and H15 could be seen in Fig.
The same procedure can be used in the hyperactivation procedure to identify hypertrophic organisms.
On the other hand, when two chicken for laying hens are housed in the
The area coverage of these individual cages is a result of a long study by the applicant that the scope for minimizing the cage area without the two chickens being stressed is that the cage for the two cages has a floor area between 0.05 and 0.1 square meters Because it came out.
Hereinafter, a ferrous-acid-based screening method using the ferric acid-based screening system according to the present invention will be described.
We will briefly explain the time required to calculate the total amount of scattering for screening of the metabolic system before examining the method of screening for the acid.
On the basis of one chicken, most chickens gave birth to the first egg and the next day did not lay eggs. In the first week of laying, about 4 eggs were born and about 60% of the eggs were produced. In the second to third weeks, After laying the largest number of eggs, the number of laying eggs gradually decreased.
However, based on the chicken population, the average egg production rate increases fairly quickly and steadily after spawning, reaching more than 90 percent after about 7 to 8 weeks. With the peak of this scattering peak as a peak, it gradually begins to decrease.
The reason for the difference in the timing of spawning between individuals and genders is that they can not start spawning on the same day because they have different weights among the genders. Scattering peak of the group is about 7 to 10 weeks after acetic acid.
In the present invention, the
The criterion for determining the operation time of the
However, as we have already seen, there may be days when normal laying eggs do not lay eggs.
Therefore, it is necessary to measure the amount of scattering for a certain period of time. At this time, there is no particular limitation on the measurement period of the scattering amount for the selection of the nucleic acid, but the measurement can be carried out for about 1 to 2 weeks based on the reason described above.
This is because the screening of hyperglycemia does not select populations, but rather selects specific individuals.
Therefore, the period for observing the cumulative total amount of scattering or the change in scattering amount and the period for determining the minimum reference scattering amount may be set to approximately one week to two weeks.
However, it should be noted that the time period for which the amount of laying is determined may be changed depending on the situation or the breed or environment.
Hereinafter, a method for selecting a ferrous acid based on the present invention will be described.
As shown in FIGS. 7 and 8, the ferrous-acid-based sorting method according to the present invention includes a first step of stopping the
As shown in FIG. 1 and FIG. 3A, in the second step, the
In the second and fourth steps, when the
This is because when the
In the second and fourth steps, the information of the
The second and fourth steps may further include storing separately counted egg quantity data from the first egg recognition sensor and the second egg recognition sensor and comparing the stored data to generate a notification signal if the difference is greater than a predetermined number As shown in FIG.
By generating the notification signal, the administrator can more easily recognize the occurrence of the transmission system.
Even if the total amount of spawning over a certain period of time exceeds the minimum reference value, it may contain a metric system.
For example, at the beginning of a certain period, the amount of spawning is normal.
In this case, the
Meanwhile, the ferrous acid sorting system according to the present invention can be more conveniently controlled by using a smart phone.
In other words, a cage with a surrogate system can be immediately identified by installing an overtone control app on a smart phone and receiving estimates and metrics by wireless communication with the
In this case, the
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be apparent to those of ordinary skill in the art.
H, H1, H2, H3, H4, H6, H15: Individual cage (11)
H1-1, H1-2, H2-1, H2-2, H3-1, H3-2, H4-1, H4-2, H6-1, H6-2, H15-1,
B1, B2, B3: Section E: Eggs
S: a narrow section (S) 10: a cage section (10)
11: Individual cage (11) 12: Individual cage for one (11)
20: conveying unit (20) 21: conveyor
22: Marker (22) 23: Obstacle for partition
30: connection part (30) 32: guide (32)
36: rotating shaft 37: blocking
40: a
42: marker (22) recognizer,
44: First egg recognition sensor (44) 50:
60: control unit (60) 221: antenna coil
222: Chipset
Claims (12)
A first step of stopping the feeding unit 20 for a predetermined period of time during which eggs are discharged from the cage unit 10 to the feeding unit 20;
A second step of counting the number of eggs discharged for each of the individual cages 11 by operating the conveying unit 20 after the lapse of the predetermined time to identify a cage having an under-rated egg discharge amount;
The third step is to house one chicken in the cage of the cage, which is presumed to contain the ascorbic acid according to the quantity counted in the second step. And
And a fourth step of repeating the first step and the second step for chickens housed in the hyperacusis in the third step to identify the chromosome system.
In the second and fourth steps, the circuit breakers 36 and 37 for opening and closing the connection part 30 between the transfer part 20 and the cage part 10 are provided. When the transfer part 20 is operated, the circuit breaker 36 , 37) to cut off the connecting portion (30).
The second and fourth steps are performed by receiving the information recognized by the sensor unit 40 and counting the egg discharge amount of the individual cage 11 by unit time and storing the counted amount of eggs, And then comparing the value obtained by adding the egg discharge amount between the individual cages 11 to the minimum reference amount to identify the cage which is supposed to contain the over-acid system by selecting the cage whose egg emission amount is less than the minimum reference amount Further comprising the steps of:
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018105788A1 (en) * | 2016-12-09 | 2018-06-14 | 주식회사 하농 | Poor layer selecting system and poor layer selecting method |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5233031B2 (en) * | 1975-08-13 | 1977-08-25 | ||
JPS63109764U (en) * | 1987-01-06 | 1988-07-14 | ||
KR20070095250A (en) | 2006-03-20 | 2007-09-28 | 충남대학교산학협력단 | Development of monitering system for layers rearing in multi-tier vertical cages |
JP2007310879A (en) * | 2006-05-15 | 2007-11-29 | Big Dutchman Internatl Gmbh | Egg count sensor |
-
2015
- 2015-06-18 KR KR1020150086480A patent/KR101687782B1/en active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5233031B2 (en) * | 1975-08-13 | 1977-08-25 | ||
JPS63109764U (en) * | 1987-01-06 | 1988-07-14 | ||
KR20070095250A (en) | 2006-03-20 | 2007-09-28 | 충남대학교산학협력단 | Development of monitering system for layers rearing in multi-tier vertical cages |
JP2007310879A (en) * | 2006-05-15 | 2007-11-29 | Big Dutchman Internatl Gmbh | Egg count sensor |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018105788A1 (en) * | 2016-12-09 | 2018-06-14 | 주식회사 하농 | Poor layer selecting system and poor layer selecting method |
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