JP2002262713A - Method for judging growth of livestock and apparatus for measuring chine height - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for judging growth using a site which can readily be measured and an apparatus capable of measuring the site. SOLUTION: This method for judging the growth of livestock comprises measuring the height of the chine ranging from the shoulder part 2 to the buttock part 5 of cattle 1 which is the livestock, calculating the average value of the measured data and judging the growth state using the resultant average value as an index. In order to measure the height of the chine, the apparatus 12 for measuring the chine height is composed of a livestock passage 13 for enabling the cattle 1 to walk and pass therethrough in one direction, a photoelectric sensor (a photoelectric sensor luminous part 18/photoelectric sensor receiving part 18a) for detecting the presence or absence of the cattle 1, an ultrasonic range finder 19 for measuring at least the height of the chine of the cattle 1 and a sequencer 20 for recording the measured data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for judging the growth of livestock, especially cattle, and to a back line height measuring device for measuring the height of the back line.

[0002]

2. Description of the Related Art Conventionally, as an index for judging the growth state of cattle, which is a domestic animal, the growth of the cattle is measured by measuring the body type, especially the body height (height of the body), the height of the cross, and the weight. It was used as a judgment index. And the body height and the cross part height are
The measurement must be done while the cow is in the correct position,
Also, the location of the position cannot be confirmed from the outside, and it is difficult to locate the position by touching the cow.

[0003] The measurement of body height and cross-section height is made by calves of Holstein and Jersey breeds, etc., which are mild and easy to stand still during the measurement. It was difficult to maintain a normal posture. For this reason, measuring the body height and cross-section height of cows such as Japanese beef requires labor, and furthermore, safety during measurement must be taken into consideration, so that the efficiency of the measuring work has been extremely poor. .

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to provide a growth determination method using a site that can be easily measured, and an apparatus that can measure the site.

[0005]

Means for Solving the Problems The gist of the present invention is to measure the height of the back line from the shoulder to the buttocks of a livestock, and to use the measured data as an index of growth to appropriately process the measured data. This is a method for judging the growth of livestock, characterized by judging the state.

The method of judging the growth of the present invention will be described in more detail. The applicant has applied the method of placing the animal on the back line of a livestock including a mushroom and a cross, which has been conventionally used as an index of growth, that is, from the shoulder to the buttocks. Paying attention to the height of the back line, it was found that a value obtained by appropriately processing the measured value of the height of the back line becomes a new growth index for livestock growth determination. This measured value is preferably processed and used as an average value of the height of the back line, but may be a mode value or a median value. The mode value is the largest value in the frequency distribution, and the median value is the central value when the data is arranged in descending order, and they are all functions of the measured value of the height of the back line. Applicants have found that, as a result of diligent efforts, they have a high correlation with body height and cross height, and use this as the height of the back line to use as an index of growth in understanding the growth state of livestock, especially cattle. The method for determining growth has been completed.

[0007] The back line of the livestock extending from the shoulder to the buttocks of the livestock may be a part extending from a portion which is substantially horizontal behind the neck (neck) to a base portion of the tail (ridge).・ It continues to the waist and hips. There is a crevice at a predetermined part of the shoulder, and a cross is located almost between the waist and hips. Measure the height of the back line on the shoulder, back, waist, buttocks, find the average value of the measured data and use it as an index of growth,
This is a growth determination method for determining the growth state of a cow from the average value.

In measuring the height of the back line, any measuring tool or method may be used as long as the height can be measured. In addition, the method of calculating the average value of the height of the back line from the measured data of the height of the back line, and the apparatus and the like are not particularly limited. The measurement of the height of the back line and the calculation of the average value may also be performed by manual measurement manually or automatically by a machine.

In the measurement of the back line,
Measure the entire range from the shoulder to the buttocks and calculate the average of the measured data.Or measure the points from the shoulder to the buttocks at multiple points and calculate the average of the measured data. You may. And the thing by multi-point measurement,
The measurement interval may be appropriately selected, and a desirable measurement interval is preferably an interval of 10 cm to 22 cm.

[0010] When the height of the back line is automatically measured by a machine, the configuration of the measuring device is not particularly limited. What is necessary is just to comprise the path | pass which can be made, the detection means which detects the presence or absence of livestock, the measurement means which can measure at least the height of a back line of livestock, and the recording means which records measurement data. Also, the control method of each component of the measuring device, the recording method of the measurement data, and the like are not particularly limited, and may be performed by a suitable method or device.

[0011] An arithmetic processing unit such as a personal computer consistently performs operations from management of recorded measurement data to calculation of an average value and growth judgment, and outputs the measurement data and judgment results as necessary. An output device such as a printer may be provided. Furthermore, in order to manage the growth state of each livestock, a database of measurement data and determination results may be created.

The structure of the passage may be any structure as long as the livestock can walk forward and pass therethrough, but as a specific structure, the width of the walking surface of the passage is around 35 cm (3
0 cm to 40 cm). Further, the width of the walking surface may be appropriately variably adjusted according to the growth situation of the livestock. Walking also includes fast walking. Then, the width above the passage may be the height of the back line and a width that does not hinder the walking of the livestock. Further, the passage may be a tunnel, and fences of appropriate height, guides for restricting walking (passage width limiting members), and the like may be provided on both sides of the passage. Of course, other than the passage, an enclosure for resting the livestock or other stationary means may be used.

The detecting means may be any as long as it can determine the presence or absence of livestock in the passage, and the detecting method and the like are not particularly limited. In other words, anything may be used as long as it can determine whether or not the livestock is in the passage, whether or not it has entered or exited the passage. Specific examples include a photoelectric sensor and the like. The power of detection of the presence of livestock makes the presence or absence of livestock correspond to the turning on and off of the signal. It is desirable that the detection means is provided with a function of detecting the movement of livestock as well as the presence or absence of livestock. In addition, since the installation position of the detection means is appropriately changed depending on the measurement means to be used, the installation position and the like are not particularly limited. In this case, the light emitting unit and the light receiving unit may be provided in parallel or at different levels.

The measuring means is not particularly limited as long as it can measure at least the height of the back line of the livestock. Even if the measuring means is a single instrument, It may be an apparatus composed of a plurality of devices. As a concrete thing, it is necessary to continuously measure the height of a whole livestock or a predetermined range including at least a portion to be a back line by a distance meter such as an ultrasonic wave provided above the passage of livestock, and it is necessary. The measurement data of the portion may be selected and used.

Alternatively, using an image processing device such as a CCD camera or the like, the signal of the detecting means may be used as a trigger to capture livestock image data and measure the height of the backline of the livestock by image processing. In addition to the measurement of the height of the back line, the average value of the height of the back line may be calculated directly.

The measurement may be performed substantially in accordance with the range of the back line of the livestock. As a specific configuration, a plurality of detecting means are provided in the passage at predetermined intervals, and The measuring means may be operated sporadically in response to the detection of livestock. In other words, the measurement means performs a single measurement using the signal of the detection means provided at a predetermined position as a trigger, and measures a plurality of points in a point range within the back line of the livestock. Therefore, the same number of pieces of measurement data as the number of detection units are obtained.

The recording means is not particularly limited, as long as it can record at least each data of the height of the back line measured by the measuring means, without any particular limitation. The recording medium (fixed or detachable) is not particularly limited. Specifically, the data may be recorded on the memory card using a sequencer. Alternatively, the program may be recorded on a storage device such as a personal computer or a hard disk or an MO serving as a peripheral device.

[0018]

As described above, the method for judging the growth of livestock of the present invention is as follows.
It is a growth determination method that measures the height of the back line of the cow's shoulder, back, waist, buttocks, finds the average value of the measured data, and uses it as an index of growth to determine the growth state of the cow, Because you can measure without finding the measurement point severely,
The measurement operation can be mechanized and automated, and the livestock can be measured without stopping and walking.

The back line height measuring apparatus of the present invention is configured as described above, and continuously measures the height of a livestock in a predetermined range including at least a portion to be the back line. When a livestock enters the passage of the measuring device, the livestock is detected by the detecting means, whereby the measuring means is activated to start measurement. The livestock travels in a walking state along the passage, and at the same time, a predetermined range including the height of the back line is measured by the measuring means, and the livestock leaves the passage.

A backline height measuring device that provides a plurality of detecting means at a predetermined interval in a portion of the backline of a livestock, that is, a passage, performs point-wise measurement, and when a livestock enters the passage of the measuring device, The livestock is sequentially detected by the first to n-th detecting means, and the measuring means operates spontaneously in response to the detection of each of the detecting means to perform measurement. That is, the livestock proceeds in a walking state in the passage, and when the first detecting means detects the livestock, the measuring means performs the measuring operation once and stops. When the second detecting means detects the livestock, the measuring means performs a measuring operation once and stops. This operation is repeated until the detection of the n-th detecting means.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The method for judging the growth of livestock and the apparatus for measuring the height of the back line according to the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a bovine showing measurement sites in the method for judging the growth of the present invention.
Is a domestic cattle, 2 is a shoulder, 3 is a back, 4 is a waist,
5 is the buttocks. The portion from the shoulder 2 to the buttocks 5 is the back line, and the height of the back line in this range is measured. Then, the average value of the measured data is obtained, and the average value is used as a growth index to determine the growth state of the cow from the average value. 6 is a neck (neck), 7 is a torso, 8 is a ridge, and 9 is a tail. Then, 10 is the cross, and 11 is the cross.

The average of the height of the back line (back line height) used in the present growth judgment method was measured from the graph 1 by a conventional method. It can be seen that there is a high correlation with body height and cross height. The height of the back line according to this method is 2.6 cm higher than the body height and 3.0 cm lower than the cross, but has a high correlation with the body height and the cross height.

【Graph】

In addition, Table 1 shows the coefficient of variation of body height and cross-shaped body height measurement values measured repeatedly by the conventional method. The coefficient of variation of body height is 1.2% (minimum 0.4%, maximum 1.7%). )so,
The coefficient of variation of the cross height is 1.3% (minimum 0.5%, maximum 1.
8%).

[Table 1] Then, observe the walking posture of the cow on a video
(Backline height during walking) was measured. Each cow was measured seven times, and the walking speed was in the range of 1.0 to 4.0 m / s (walking was normal and trot). When compared with the backline height when walking, the difference is -0.6 to +0.
It is in the range of 6%. The coefficient of variation when repeatedly measuring the backline height during walking is in the range of 0.5 to 1.3%. The above is shown in Table 2.

[Table 2] From the results in Table 2, the coefficient of variation of the backline height during walking is about the same as or less than the coefficient of variation of the measured body height and cross height measured by the conventional method in Table 1, and the backline height is Like the cross height, it can be an index to grasp the growth.

FIG. 2 is a side view showing an example of a back line height measuring apparatus according to the present invention. FIG. 2 (a) shows one apparatus configuration for continuously measuring the upper portion including the range of the back line. (B)
1 shows one device configuration for measuring a range of a back line in a point manner. 12 is a back line height measuring device, 13 is a livestock passage through which livestock passes, 14 is a livestock passage 13 having a central width of about 35
These are passage guides provided on both sides of the passage so as to make m. A is an entrance of the livestock passage 13 and B is an exit of the livestock passage 13.

Reference numeral 15 denotes a photoelectric sensor 1 light emitting unit for detecting the presence or absence of livestock, 15a denotes a photoelectric sensor 1 light receiving unit of the photoelectric sensor 1 light emitting unit 15, 16 denotes a photoelectric sensor 6 light emitting unit, 16a denotes a photoelectric sensor 6 light receiving unit, 17 is a photoelectric sensor 10 light emitting unit, 1
Reference numeral 7a denotes a light receiving unit of the photoelectric sensor 10. Although the photoelectric sensor light-emitting unit and the photoelectric sensor light-receiving unit are only used for description (three light-emitting units / three light-receiving units), the light-emitting unit and the light-receiving unit are all 10 photoelectric sensors 1 to 10. It is provided in places. 18 is a photoelectric sensor light emitting unit,
Reference numeral 18a denotes a photoelectric sensor light receiving unit, 19 denotes an ultrasonic distance meter for measuring height, and 20 denotes a sequencer for managing and recording measurement data.

(A) In the measurement by the device configuration shown in FIG. 1, the cattle 1 as livestock enters the livestock passage 13 of the backline height measuring device 12, and the photoelectric sensor light emitting portion 18 and the photoelectric sensor light receiving portion 18 are provided.
cow 1 by blocking the light beam irradiated during
Is detected, and the ultrasonic distance meter 19 starts measurement by the detection. At the start of the measurement, the shoulder 2 of the cow 1 is located substantially below the ultrasonic rangefinder 19, and thus the measurement start point starts from the shoulder 2 and continues to the height of the back line from the butt 5 to the ridge 8. The cow 1 was measured by the photoelectric sensor
8 and passes through the photoelectric sensor light receiving portion 18a.

The measurement data is managed and recorded by the sequencer 20. In the management record, the measurement data necessary for the growth judgment, that is, the height of the back line is selected and recorded. This selection may be performed by a personal computer or the like connected to the sequencer 20.

(B) In the measurement using the device configuration shown in FIG. 2, the cattle 1 as livestock enters the livestock passage 13 of the backline height measuring device 12, and is located between the photoelectric sensor 1 light emitting unit 15 and the photoelectric sensor 1 light receiving unit 15a. When the cow 1 is detected by blocking the irradiated light beam, the cow 1 passes, and the irradiation of the light beam returns again between the photoelectric sensor light emitting unit 15 and the photoelectric sensor light receiving unit 15a. Upon detection, the ultrasonic range finder 19 performs one measurement. At the time of the measurement, the shoulder 2 of the cow 1 is located substantially below the ultrasonic distance meter 19, and therefore, the first measurement point of the height of the back line is the shoulder 2. This measurement operation continues until the cow 1 passes through the photoelectric sensor 10 light emitting unit 17 and the photoelectric sensor 10 light receiving unit 17a. At the time of measuring the height of the last back line, the part of the cow 1 located substantially below the ultrasonic distance meter 19 is the tail 5. That is,
There are ten measurement points equal to the distance between the photoelectric sensors, and the height of the back line from the shoulder 2 to the buttocks 5 is measured at ten points. The measurement data is managed and recorded by the sequencer 20.

FIG. 3 is a side view of a cow body showing an example of a measurement form. FIG. 3A shows a measurement form when measurement is performed by the apparatus shown in FIG. 2A. The height of the back line of the cow 1 starting from the shoulder 2 to the tail 5 and the ridge 8 is continuously measured. C indicates the continuous measurement range. FIG. 2 (b) shows the measurement form when measuring with the apparatus shown in FIG. 2 (b), in which the height of the back line from the shoulder 2 to the tail 5 of the cow 1 is indicated in 10 points. Measure. D indicates the ten measurement points.

FIG. 4 is a front view of the back line height measuring device of FIG. 2, and 14 is a passage guide provided on both sides of the livestock passage 13 to make the central width of the passage 13 approximately 35 cm. In addition, the photoelectric sensor light-emitting unit and the photoelectric sensor light-receiving unit, in this figure, the height of each of the photoelectric sensor 1 light-emitting unit 15 and the photoelectric sensor 1 light-receiving unit 15a is changed so as to be provided stepwise so that livestock can be reliably detected. However, as a matter of course, it may be provided in parallel at a suitable position as appropriate.

FIG. 5 is a block diagram showing the configuration of the back line height measuring device. FIG. 5A is a block diagram showing the structure of the back line height measuring device according to FIG. The inside passage is a livestock passage 13, a detecting unit is a photoelectric sensor, a measuring unit is an ultrasonic distance meter 19, and a recording unit is a sequencer 20. (B) illustrates the configuration of the image processing apparatus, and the passage in the block diagram may be a passage through which livestock can pass or pause. Of course, livestock passage 1
A passage equivalent to 3 may be used. Any CCD camera can be used as long as it can identify the part of the animal's back line when image processing is performed and can calculate the height from the foot contact surface of the leg to the back line. A plurality of CCD cameras may be provided. (A) In both figures (a) and (b), the personal computer indicated by a dashed line is used to make a database of measurement data of the height of the back line or to judge or determine the growth of livestock using the back line height measurement device. This is for performing device control and arithmetic processing when a system such as diagnosis is constructed.

FIG. 6 is a diagram showing an example of a growth diagnosis system including the back line height measuring device.
The cattle 1 that has entered the livestock passage 13 of the cattle cuts off the light beam that is irradiated between the photoelectric sensor 1 light-emitting unit 15 and the photoelectric sensor 1 light-receiving unit 15a, whereby the cow 1 is detected. The cow 1 advances in the livestock passage 13 and the buttocks 5 of the cow 1 pass between the photoelectric sensor light-emitting unit 15 and the photoelectric sensor light-receiving unit 15a, and between the photoelectric sensor light-emitting unit 15 and the photoelectric sensor light-receiving unit 15a. When the irradiation of the light beam returns, the ultrasonic range finder 19 performs one measurement by detecting the irradiation.
At the time of the measurement, the shoulder 2 of the cow 1 is located substantially below the ultrasonic distance meter 19, and therefore, the first measurement point of the height of the back line is the shoulder 2.

According to the position of the cow 1 in the figure, it starts from between the photoelectric sensor light-emitting part 15 and the photoelectric sensor light-receiving part 15a and passes between each photoelectric sensor light-emitting part and photoelectric sensor light-receiving part six times. Therefore, the ultrasonic rangefinder 19 has performed the measurement of the height of the back line six times, and the sequencer 20 has the heights of the six back lines from the shoulder 2 of the cow 1 toward the rear. The point data is recorded. Then, the data measurement of the height of the back line continues until the light passes between the light emitting unit 17 (not shown) of the photoelectric sensor 10 and the light receiving unit 17a of the photoelectric sensor 10, and the sequencer 20 finally reaches the cow 2 from the shoulder 2 to the buttocks. Measurement data of the heights of the ten back lines up to 5 are recorded.

Table 3 shows the accuracy test results of the back line height measuring device. Eleven Holstein species having a body height of 116.0 to 145.8 cm were subjected to a test measurement accuracy test. The walking speed was in the range of 0.7 to 5.0 m / s, and two types of walking methods, normal foot and fast foot, were observed. The coefficient of variation of the back line height during walking is 0.3 ~
At 1.2%, less than 1.0% for 9 cows. this is,
It is about the same as or less than the coefficient of variation of the measured body height and cross height measured by the customary method in Table 1.

[Table 3]

The point data of the heights of the ten back lines recorded in the sequencer 20 are processed by the personal computer 21 and the average value of the heights of the back lines is calculated to determine the growth state of the cow 1. Is done. Reference numeral 22 denotes a main body which is an arithmetic processing unit, 23 denotes a keyboard, 24 denotes a mouse, and 25 denotes a display. The personal computer 21 is also used to create a database of measurement data of the height of the back line of each cow, and to perform device control and arithmetic processing of a growth diagnosis system including the back line height measurement device.

[0035]

[Effect] Since the method for judging the growth of livestock of the present invention is the above-described judging method, when measuring the height of the back line, the height of the back line is determined without particularly specifying the measurement site within the range of the back line. Since the height can be measured and the livestock can be measured without standing still, anyone can measure easily and accurately, and the measurement work can be simplified and labor-saving. Then, since the height of the back line is used as a barometer as a criterion for growth, there is only one data-up site for the determination, and therefore, by accumulating data, health management as well as growth management can be performed. In addition, by making the measurement data into a database, it is also possible to grasp changes in the growth status depending on the type of cow.

That is, the range of the back line of the livestock is not a specific location such as a pinpoint, so that it is easy to determine from the appearance of the cow, and the livestock can be measured while walking without standing still. There is a great advantage that the height can be measured without skill and labor can be saved or automated. Since the backline height measuring device is configured as described above, by passing the livestock in a walking state without stopping the livestock, the height of the backline of the livestock can be automatically measured. Since the average value of the height of the back line is calculated and the growth state is determined, the labor and time required for the livestock growth determination operation can be reduced, and the working efficiency is greatly improved. And, since the height of the back line can be measured without touching the cow, the measurement work of the rough beef can be safely performed.

[Brief description of the drawings]

FIG. 1 is a side view of a cow body showing a measurement site in the growth determination method of the present invention.

FIG. 2 is a side view showing an example of the back line height measuring device of the present invention.

FIG. 3 is a side view of a cow body showing an example of a measurement form.

FIG. 4 is a front view of the back line height measuring device of FIG. 2;

FIG. 5 is a block diagram showing a configuration of a back line height measuring device.

FIG. 6 is a diagram showing an example of a growth diagnosis system including the back line height measuring device.

[Brief explanation of graph]

[Graph 1] Relationship between back line height, body height and cross height

[Explanation of symbols]

1-cow, 2-shoulder, 3-back, 4-waist, 5-butt, 6-neck, 7
-Trunk, 8-ridge, 9-tail, 10-koko, 11-cross, 12-backline height measuring device, 13-livestock passage, 14-passage guide, 15-photoelectric sensor 1 light emitting unit, 15a-photoelectric sensor 1 light receiving section, 16-photoelectric sensor 6 light emitting section, 16a-photoelectric sensor 6 light receiving section, 17-photoelectric sensor 10 light emitting section, 17
a-photoelectric sensor 10 light receiving section, 18-photoelectric sensor light emitting section,
18a-photoelectric sensor light receiving section, 19-ultrasonic distance meter, 20
-Sequencer, 21-personal computer, 22-main unit, 23-keyboard, 24-mouse, 25-display, A-inlet, B-outlet, C-continuous measuring range, D-measuring point

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] April 20, 2001 (2001.4.2
0)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is a side view of a bovine showing measurement sites in the growth determination method of the present invention.

FIG. 2 is a side view showing an example of the back line height measuring device of the present invention.

FIG. 3 is a side view of a cow body showing an example of a measurement form.

FIG. 4 is a front view of the back line height measuring device of FIG. 2;

FIG. 5 is a block diagram showing a configuration of a back line height measuring device.

FIG. 6 is a diagram showing an example of a growth diagnosis system including the back line height measuring device.

[Description of Signs] 1-cow, 2-shoulder, 3-back, 4-hip, 5-butt, 6-neck, 7
-Trunk, 8-ridge, 9-tail, 10-koko, 11-cross, 12-backline height measurement device, 13-livestock passage, 14-passage guide, 15-photoelectric sensor 1 light emitting unit, 15a-photoelectric sensor 1 light receiving section, 16-photoelectric sensor 6 light emitting section, 16a-photoelectric sensor 6 light receiving section, 17-photoelectric sensor 10 light emitting section, 17
a-photoelectric sensor 10 light receiving section, 18-photoelectric sensor light emitting section,
18a-photoelectric sensor light receiving section, 19-ultrasonic distance meter, 20
-Sequencer, 21-personal computer, 22-main unit, 23-keyboard, 24-mouse, 25-display, A-inlet, B-outlet, C-continuous measuring range, D-measuring point

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Nobuo Ito 768, Senbonmatsu, Nishinasuno-cho, Nasu-gun, Tochigi Pref. Inside the grassland test site (72) Inventor Mikio Kamo 768, Senbonmatsu, Nishinasuno-cho, Nasu-gun, Tochigi Prefecture Ministry of Agriculture, Forestry and Fisheries Inside the grassland test site (72) Inventor Toshihiko Ibuki 1-40-2 Nisshincho, Omiya City, Saitama Prefecture Inside the Research Promotion Organization (72) Inventor Sadao Nakano 3-19-16 Nukii, Nerima-ku, Tokyo Inside Fujihira Industry Co., Ltd. Fujihira Industry Co., Ltd. Fujimidai Plant (72) Inventor Hitoshi Tanaka 6-11-6 Hongo, Bunkyo-ku, Tokyo Fujihira Industry Co., Ltd. (72) Invention Person Masami Ichiyanagi Inside Fujihira Industry Co., Ltd., 6-11-6 Hongo, Bunkyo-ku, Tokyo (72) Inventor Naotaka Umezawa F-term inside Fujihira Industry Co., Ltd. 6-11-6, Hongo, Bunkyo-ku, Tokyo 2F069 AA42 BB40 CC10 GG04 GG07 GG09 GG12 GG62 GG65 HH09 JJ11 JJ25 MM26 NN26 5J083 AA02 AB20 AC29 AD04 AE10 AG05 BE14 BE60

Claims (5)

[Claims] 1. A method for judging the growth of livestock, comprising measuring the height of the back line from the shoulder to the buttocks of the livestock, and judging the growth state using a value obtained by appropriately processing the measured data as an index. 2. The method according to claim 1, wherein the value obtained by appropriately processing the measured data is one of an average value, a mode value, and a median value. 3. A passage through which livestock can walk and pass in one direction, detection means for detecting the presence or absence of livestock, measurement means for measuring at least the height of the back line of the livestock, and recording means for recording measurement data. Backline height measuring device characterized by comprising 4. A livestock stationary means, a livestock detecting means for detecting the presence or absence of livestock, a livestock measuring means capable of measuring at least the height of the back line, and a recording means for recording measurement data. Back line height measuring device 5. The method according to claim 3, wherein the detecting means has a function of measuring the movement of the livestock, and the measuring means operates continuously or spontaneously according to the movement of the livestock. Line height measuring device