JP2002142608A - Method and apparatus for controlling birth of livestock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and an apparatus for controlling birth of livestock by which a person monitoring the livestock is able to simply control the birth and the livestock is capable of safely providing the birth. SOLUTION: An odor detecting element capable of freely detecting the odor from a barn capable of freely housing the livestock is installed and a detecting circuit for detecting the odor intensity emitted from the odor detecting element is provided. When the odor intensity emitting exceeds a prescribed value, it is judged that the livestock is providing birth.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a technique for managing livestock such as cows, horses, pigs, goats and sheep, and more particularly, to a method and an apparatus for managing the behavior of livestock related to its birth.

[0002]

2. Description of the Related Art In particular, ranches that produce racehorses (light horse ranches) are mainly concentrated in Hokkaido (Hidaka district), and all ranches have a vast ranch with a small number of less than 10 people. management·
Operate. Racehorses are categorized by age of birth,
It is advantageous to give birth as early and warm as possible during the year, so the birth period is concentrated in March to June. Although the expected date of childbirth is tentative, the birth date is not always the expected date and is usually shifted by about one week. Some horses are born about a month later than expected.
Therefore, at this time, it is necessary to monitor the state of the horse 24 hours a day, which is a severe burden for the ranch manager. Racehorses have some kind of artistic element that is created by crossing good pedigrees,
Naturally, both mares and breeding fees are expensive, and the gestation period is as long as about 11 months, so the investment amount for one birth horse is tens of millions of yen. Great care has been taken to ensure that horses are born safely to ensure a return on this investment. However, even if I watched 24 hours a day, my eyes were kept off for a short time due to fatigue, and my discovery was delayed.
Birth horses may die. In addition, even in the rare case of abnormal birth (such as breech breeding), it is important to know the signs of childbirth as soon as possible and to return to normal birth as soon as it is found. It is. From such a background, there is a demand for the development of a management device that can promptly recognize signs of childbirth and ensure that a person can attend the childbirth. Also, in the breeding ranch of other livestock such as beef cattle and dairy cows, as in the case of racehorses, appropriate capital is invested to produce excellent breeds,
There has been a desire to reduce risks (accidents) during childbirth.

[0003] As a device for detecting signs of childbirth, in the case of humans, a method of attaching a microphone or the like to the abdomen of a pregnant woman and observing the heart rate by heart sounds of the fetus is known.
However, livestock, especially large animals such as horses and cattle, cannot be applied to this technique because the fat in the abdomen makes it difficult to accurately measure the fetal heart sounds. Therefore, for example, in a light breeding ranch, a video camera is installed in a livestock barn, and the actual situation is that a person constantly monitors the entire livestock barn. Further, further, a transmitter is inserted into the vagina of the livestock, and a transmitter for transmitting radio waves is provided in the transmitter,
When the transmitter is taken out of the vagina at the same time as the rupture of the water, it monitors the change in the radio wave transmitted from the transmitter, and provides an alarm switch on the transmitter, and the transmitter is released outside the vagina. When the transmitter is turned on, an operating mechanism that activates an alarm switch that warns that the transmitter has been moved out of the vagina (for example, a thread extending from the alarm switch is sewn to the vulva and the vagina of the transmitter is It is mainly performed by pig farmers to detect by monitoring radio waves and sounds transmitted when the alarm switch is turned on.

[0004]

However, such a technique involves a risk of infectious disease and is not suitable for use in expensive cows and horses.

Accordingly, an object of the present invention is to provide a livestock delivery management method and apparatus that enables a person who monitors livestock to easily manage delivery and that the livestock can be delivered safely in view of the above situation. Is to provide.

[0006]

According to the present invention, there is provided a method for managing livestock birth, which comprises: providing an odor detecting element capable of detecting an odor from a livestock house capable of accommodating livestock; A detection circuit for detecting an odor intensity output from the odor detection element is provided, and when the odor intensity output exceeds a predetermined value, it is determined that the livestock is giving birth. In addition, in addition to this, a tilt detection device attached to the tail of the livestock is provided, and a duration of the tilt abnormality of the tilt detection device, the number of times of the tilt abnormality per unit time,
When it is detected that the tilt angle of the tail at the time of the tilt abnormality satisfies a predetermined criterion, it may be determined that the livestock is giving birth.

Further, a characteristic configuration of the livestock birth control device of the present invention for achieving the above object is to provide an odor detecting element capable of detecting an odor from a livestock house capable of accommodating livestock. A detection circuit for detecting the odor intensity output is provided, and a judgment mechanism for judging the birth sign of the livestock based on the odor intensity output is provided. Further, an inclination detecting device attached to the tail of the livestock may be provided, and a judging mechanism for judging signs of childbirth of the livestock based on abnormal inclination of the inclination detecting device may be provided.
Preferably, the livestock is a cow or a horse.

[Effects] That is, if an odor detecting element capable of detecting an odor from a livestock house capable of accommodating livestock is provided, odor components in the livestock stable can be constantly monitored. At this time, if a detection circuit for detecting the odor intensity output from the odor detection element is provided, it is possible to know whether the odor intensity output has not reached a predetermined value. Here, the odor of the animal barn is a mixture of various odor components such as the odor of the livestock body, feed, and excrement of manure. The strength is maintained. Therefore, if the increase in the odor intensity related to childbirth, such as body fluids discharged with the birth of livestock, is grasped by knowing whether or not the odor intensity reaches a predetermined value, it can be said that this is a sign of livestock birth. Recognizing the first or second rupture, the person will be able to attend the birth for a few minutes to tens of minutes and complete the birth safely and lightly.

The process of giving birth to a domestic animal goes through the following process, for example, in the case of normal delivery of a horse. Urachal vesicles appear The urinary vesicles go out of the vagina without tearing. 2. First rupture The allantois rupture and urine flows out. 3. Appearance of amniotic vesicle (baby sac) The amniotic vesicle does not break and goes out of the vagina. 4. Second rupture The amniotic membrane ruptures and the amniotic fluid comes out. 5. 5. Appearance of hoof tip The tip of hoof goes out of vagina (sometimes still in amniotic membrane). Nasal speculum appears Nasal speculum goes out of vagina. 7. The top of the head appears. The top of the head goes out of the vagina. 8. The entire foal's body goes out of the vagina. However, this course is not always followed, for example,
Urine fluid (first rupture) may occur before the urine vesicles exit the vagina, and amniotic fluid (second rupture) may occur before the amniotic vesicles exit the vagina. In addition, the first and second ruptures may occur continuously, making it difficult to distinguish between the two. Among these, the above-mentioned process that requires the assistance of a person is described in the above 5. (Hereinafter referred to as the fifth stage). If the first stage can be detected by the invention of the present application, it usually takes at least 3 to 5 minutes to reach the fifth stage. In general, a person can be present and give birth to a baby with a margin of 5 to 10 minutes, so that pups such as foals can be safely obtained.

[0010] The present inventors also consider the behavior of the odor intensity when the livestock simply exercises, when the livestock excretes stool, or when it indicates that it is about to reach the first stage of childbirth. It was revealed for the first time by using an odor sensor. That is, the intensity of the odor increases with the behavior of these livestock. However, in each case, it was newly found that there was a peculiar pattern in how to increase the intensity of the odor. In other words, the present inventors examined the occurrence of various odors in the barn using the livestock birth control device described below, and as shown in FIGS. 4 and 5, the odor of the barn based on the excretion of the stool of the livestock was obtained. The fluctuation is a fluctuation showing a sharp rise as shown in FIG. 5, and from the first stage to the fourth stage of childbirth, as shown in FIG. It was found that the odor output increased. Further, when the livestock is moving around the stable in a stable manner, it can be seen that a small increase or decrease in the output continues as shown in FIG. It is considered that this is because the odor detection device captures the sweating action accompanying the exercise of the livestock and the change in the odor intensity of the scattered bedding when the livestock stomps on the bedding. Therefore, considering the behavior of livestock at the time of giving birth, at the time of giving birth, the livestock often acts as a sign before giving birth, as if moving calmly in the barn, especially in the case of horses, etc. It is known that the forefoot, which is said to be pre-scratched, is alternately scraped up for 2 to 3 hours before childbirth. Therefore, as shown in FIG. Knowing this will ensure that the subsequent childbirth can be caught.

In other words, if the signs of livestock birth are judged on the basis of the odor intensity, the person who manages the birth of the livestock can be more easily present, and the birth of the livestock can be managed safely and lightly by light labor. be able to.

It is also known that in the case of livestock with a tail, the tail is kept lifted for a relatively long time as the birth approaches, or the frequency increases even if the lifting time is short, Such information is also expected to be used to more reliably grasp the signs of childbirth. More specifically, in the case of a horse, maintaining the state where the tail is lifted at the time of excretion of stool or the like is at most about 20 minutes.
The second is the limit, the lifting angle is more than 90 degrees,
It is also known that the frequency in this case is at most twice per hour. On the other hand, in the case of childbirth, the tail is lifted for 20 to 30 seconds, which is longer than that for excretion of stool, or the frequency is increased to 3 times or more per hour, even if the time of one lift is short. Further, the inventors have found that the lifting angle is often 90 degrees or less. That is, if the tilt detection device is attached to the tail of the livestock, the tilt of the tail of the livestock changes when the livestock lifts the tail, so that the abnormal tilt can be detected. By the tilt detection device,
When excretion of feces is detected when it is detected that the tilt abnormality has continued for a predetermined time or that the number of times per unit time is 3 or more, and when it is detected that the angle is 90 degrees or less. And it can be considered that the livestock shows signs of childbirth.

[0013] As a result, it is possible to more reliably distinguish from the other odors not related to childbirth, as compared with the case of judging the sign of childbirth by only odor, thereby further reducing human labor. Therefore, it is possible to effectively manage livestock birth.

Further, as a livestock birth control device, an odor detection element capable of detecting an odor from a livestock house capable of storing livestock is provided, thereby detecting an odor generated in the livestock house and detecting the odor. If a detection circuit for detecting the odor intensity output from the odor sensor is provided, it is possible to objectively know the level of the detected odor. Therefore, based on the odor intensity output, it is possible to know odor information related to childbirth in the livestock, such as the odor being higher than the odor of the normal livestock pens, or repeating the behavior of increasing and decreasing. If it can be considered that the information is related to childbirth, it is judged by the judgment mechanism that it is a sign of childbirth of the livestock. Therefore, if a person is involved in the birth of livestock based on the judgment, it is possible to accurately know the birth time of the livestock and to perform safe birth with minimum effort.

Further, if an inclination detecting device attached to the tail of the livestock is provided, it is possible to more accurately know whether or not the odor intensity output information indicates anything related to childbirth. It turns out that childbirth can be managed more reliably. Therefore, by judging the sign of childbirth of the livestock based on the tilt abnormality of the tilt detection device, the livestock can be surely given safe birth while reducing labor for human management.

If the livestock is a cow or a horse, the change pattern of the odor in the barn at the time of giving birth can be related to various known forms such as pre-scratching, so that accurate judgment can be made easily. In addition, it is possible to provide a suitable birth control method, whereas a suitable birth control method has not been known for cows or horses.
Its utility value is particularly high.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the livestock birth control device of the present invention includes an odor detection element 1 in each livestock house housing livestock and a detection circuit 5 for obtaining an odor intensity output from the odor detection element 1. Smell detector 10
0 to a plurality of odor detection devices 100
And a signal processing unit A for processing what kind of odor intensity output is obtained from which barn, and the odor intensity output is determined by a determination mechanism B provided in the signal processing unit A. In addition, it is configured to be able to determine whether or not information on childbirth is given. When the determination mechanism B determines that the output signal is related to childbirth, the determination mechanism B transmits an alarm generation command to the alarm transmission unit C, and the alarm generation unit C that receives the alarm generation command controls the livestock barn. An alarm signal is transmitted to an alarm unit D at a place where a person is present, informing that the livestock barn exhibiting the odor output and the livestock in the barn are showing signs of childbirth. As a result, if the livestock in the barn shows signs of giving birth, the livestock manager who receives the warning signal must rush to the barn where the livestock is located, attend the birth, and work to safely give birth. In addition, the monitoring operation does not need to be carefully performed until the alarm signal is obtained. Therefore, according to the livestock delivery management method of the present invention, the labor of the monitoring operation is reduced.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings, taking as an example a case where the present invention is applied to a method for managing birth in a horse stable. <Odor Detecting Element> As shown below, the structure of Japanese Patent Application Laid-Open No. 07-260729 is adopted. 1. Structure of Odor Detector and Odor Detector FIG. 2 shows the configuration of the substrate type semiconductor odor detector 1 of the present invention. As shown in the figure, the odor detection element 1
A metal oxide semiconductor film layer 3 mainly composed of tin oxide (SnO ₂ ) is provided on an alumina substrate 2, and a detection electrode electrically connected to the metal oxide semiconductor film layer 3 is provided. It is provided with a platinum thin film electrode 4. The detection-side circuit 5 is configured to detect a change in the resistance value between the platinum thin-film electrodes 4. As a general example of the detection-side circuit 5, a circuit that includes a load resistor RL connected in series to the odor detection element 1 and obtains a voltage output at this resistor can be given.
Further, a platinum thin film heater 6 is provided on the back side of the alumina substrate 2.
, And the odor detection element temperature control device 7 is connected to this to constitute a heating means. This heating means
The odor detection element (metal oxide semiconductor film layer) 1 is heated and maintained at 450 to 550 ° C. suitable for the operation of the odor detection element of the present application. Further, a coating layer 8 is provided on the sensor surface for the purpose of increasing the sensitivity to a specific gas. By employing the above configuration, the gas detection device 100 is configured as a whole.

Hereinafter, the requirements of the substrate type semiconductor gas sensor of the present invention will be described. Odor detecting element Average primary particle diameter of tin oxide 35 to 70 nm Firing temperature 1000 to 1400 ° C. Specific surface area 4.5 to 1.8 m ² / g Metal oxide semiconductor film thickness 10 to 50 μm Operating temperature at gas detection 450 to 550 ° C. Addition ratio of lead and lanthanum 0.5 to 8 atm% Thickness of each coating layer 10 to 100 μm

2. Method of Manufacturing Sensor A predetermined aqueous solution was prepared using tin tetrachloride, and a precipitate of tin hydroxide obtained by adding aqueous ammonia to the solution was dried and calcined at 600 ° C. for 2 hours in an electric furnace. To obtain tin oxide. This is pulverized into fine powder, kneaded with water to form a paste. This paste is applied to the electrode portion of the alumina substrate 2 provided with the platinum thin film comb-shaped electrode 4 and the heater 6. After drying this, it is baked in an electric furnace (not shown) at a temperature of 1000 ° C. to 1400 ° C. for 2 hours to obtain a thick film of tin oxide, thereby obtaining the gas sensor 1. Lead (P
The addition of b) is lead nitrate, and the addition of lanthanum (La) is an aqueous solution of lanthanum nitrate. The above tin oxide is 0.5 to 8 atm% for lead (optimum addition amount 2 atm%) and 0 for lanthanum. 0.5 to 8 atm% (optimum addition amount 2 atm%)
And the respective liquids are impregnated into the sintered body. Further, this is dried at room temperature and then heated at 600 ° C. for 1 hour to obtain each oxide. Next, zinc oxide, titanium oxide,
Tungsten oxide and molybdenum oxide are each pulverized into fine powders and kneaded with water to form a paste, which is applied to the surface layer of the above-described tin oxide sintered body. Furthermore, after drying at room temperature, it is heated at 600 ° C. for 2 hours and sintered to form a coating layer.

3. Sensitivity Measurement Method of Sensor The odor detection element obtained by the above method is incorporated in an electric circuit as shown in FIG. 2, and both ends of a load resistor RL connected in series with the electrode terminal of the odor detection element. The voltage is measured, and this voltage value is obtained as an output. Since the resistance value of the metal oxide semiconductor layer 3 is high in clean air and lower in an odor component gas as its concentration increases, in the circuit configuration shown in FIG. The sensitivity characteristics with respect to the values and the various gas concentrations are as shown in FIG.
It can be seen that various odor components can be detected with high selectivity from other odorless gases.

<Birth management of horse> An example in which the above-described livestock birth management device is used for birth management of a horse will be described. FIG. 4 shows the result of monitoring the output (sensor output) from the gas detection device attached to the stable where the horse whose birth was expected to be delivered was housed and monitoring the output from the gas detection device. From Figure 4, the behavior of the horse and
Since there is a clear correspondence between the generation of odors related to childbirth, horse birth can be obtained by detecting a small increase or decrease in sensor output with a vertical range of odor intensity output of about 100 mV or more per 60 seconds in (a). It turns out that the time can be grasped. Also, when the determination mechanism B detects the timing of the first rupture of (b) and the timing of the second rupture of (c), and the sensor output becomes 700 mV or more for 60 seconds or more, the information is obtained. An alarm generation command is issued to the alarm generation unit as a sign of childbirth. Therefore, a person who knows the warning by the warning unit can be present at an important time until childbirth, and can assist for safe childbirth. In addition,
When the behavior of the odor output when the horse excreted the stool was examined, it was found that the behavior was as shown in FIG. 5, and it was clear that the behavior of the odor related to childbirth could be clearly determined.

[Another Embodiment] Another embodiment will be described below. (1) The tilt detection device 200 is attached to the tail of the livestock, and when it is detected that the tilt abnormality of the tilt detection device has continued for a predetermined time, it can be determined that the livestock is giving birth.

<Tilt Detecting Apparatus> As shown in FIG. 6, the tilt detecting apparatus includes an opaque sphere 202 inside a transparent tubular body 201 and one end side 201a inside the tubular body 201.
And the other end 201b is sealed so as to be reciprocally movable.
3, 204, and the spherical body 20 inside the cylindrical body 201 is provided.
2 is arranged so as to be able to detect whether or not it is on one end side 201a. The cylindrical body 201 has a cylindrical body 20.
A mounting portion 205 is provided so as to be freely mounted in a posture along the hanging posture of the tail of the livestock, and is mounted on, for example, the tail of a horse as shown in FIG. In addition, the pair of light emission,
Information on whether or not the sphere 202 is detected by the light receiving elements 203 and 204 can be wirelessly transmitted to the signal processing unit by the transmitter 206.

<Tilt Detection Method> As described above, when the tilt detecting device is attached to the tail of a horse, and when the horse lifts its tail (the state shown by the broken line in FIG. 7), the sphere is moved from one end side. Rolling to the multi-end side, the pair of light-emitting and light-receiving elements can detect that the sphere is not at one end side of the cylindrical body, and determine that the tail has been lifted. By monitoring its duration, it is known that the lifting of the tail is related to childbirth.

In this manner, the tail lifting operation of the horse was examined. When the horse excreted the stool, the tail lifting operation was performed for about 20 seconds or less, while the horse took before giving birth. It can be seen that the tail lifting operation can be clearly recognized as a behavior different from stool excretion for 20 to 30 seconds, and by grasping such an operation, the signs of childbirth can be confirmed, It can be seen that the tail lifting operation is likely to be related to childbirth.

(2) Further, as the inclination detecting device, instead of the device for optically detecting the inclination shown in FIG.
As shown in FIG. 8, the inclination may be electrically detected. <Tilt Detecting Device> That is, the tilt detecting device is configured to allow a conductive fluid 207 such as mercury or an electrolytic solution to flow into the cylindrical container 201 as shown in FIG. Enclose. Electrodes 208, 209 and 210 are provided at a plurality of places (three places in FIG. 8) inside the cylindrical body 201, and the electric resistance value between the electrodes 208 and 209 and the electrode 208
Resistance between electrode 210 and electrode 210 and electrode 209 and electrode 2
The position and posture of the conductive fluid 207 are detected from the electric resistance value between the ten, and the tail posture is arranged so as to be detectable. Information on the position of the conductive fluid 207 inside the cylindrical body based on the electric resistance value between the electrodes 208, 209, 210 can be wirelessly transmitted to the signal processing unit by the transmitter 206. . <Tilt detection method> As described above, when the tilt detecting device is attached to the tail of a horse, and when the horse lifts the tail (the state shown by the wavy line in FIG. 7), the lifting angle is 90 degrees or less. As shown in FIG. 8B, when the conductive fluid moves inside the cylindrical body 201 and the electrodes 208 and 209 are electrically connected to each other and the lifting angle is 90 degrees or more, Since 209 and 210 are electrically connected,
By monitoring this, the frequency of raising the tail and the angle can be detected. The state in which the electrodes 208 and 209 are electrically connected (FIG. 8B)
In any case where the terminals 9 and 210 are electrically connected (FIG. 8 (c)), it can be determined that the tail is being lifted. Therefore, the duration of the lifting operation and the number of times per unit time ( Frequency) can be monitored.
In the case of a horse, if it is observed that this frequency is three or more times in one hour, it is known that the lifting operation of the tail is likely to be related to childbirth. Further, only the electrodes 208 and 209 are electrically connected (FIG. 8).
If (b)) is detected, the angle of the tail is 90 degrees or less and the tail lifting operation related to childbirth, the electrode 209
If the state where the and 210 are electrically connected (FIG. 8 (c)) is detected, there is a high possibility that the tail angle is 90 degrees or more and the tail is lifted in relation to excretion of feces. It is known. It can be seen that by using such a behavior in combination with the above-mentioned delivery management method using an odor detection device, delivery management can be performed more reliably. (3) In the above embodiment, an example in which one odor detection device is provided in the barn is shown. However, a plurality of odor detection devices may be provided, and the information is processed by the signal processing unit and the odor detection device is used. You can know whether the smell is related to childbirth, including its distribution. Further, the odor detection device is not limited to the one described in the above embodiment, and various types can be adopted. When a plurality of odor detection devices are applied, the nature of the odor can be determined based on the difference between the respective gas detection characteristics. That is,
When three odor detecting elements are provided at the entrance, the center, and the back of the barn to monitor the odor of the barn, it can be seen that FIG. 9 is obtained. The odor intensity from each odor detecting element increases with time. At first, it can be seen that the intensity output is also different, and it can be seen that the odor diffusion time delay occurs depending on the distance from the odor source. In such a situation, by monitoring the difference in odor intensity output from each odor detection element, the odor intensity can be controlled without being affected by sudden changes such as ambient environmental conditions (temperature, humidity, ventilation conditions). Since the rise can be monitored, the odor related to childbirth can be detected more precisely, which is preferable.

(4) Although the odor detecting device is provided in the barn, it may be provided in the tail of livestock. In this case, the transmission of the signal from the odor detection device to the signal processing unit is also performed.
This can be performed wirelessly, and the same processing can be performed thereafter.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a delivery management device.

FIG. 2 is a schematic diagram of an odor detection device.

FIG. 3 is a graph showing output characteristics of the odor detection device.

FIG. 4 is a graph showing the behavior of odor intensity output related to the delivery of horses.

FIG. 5 is a graph showing the behavior of odor intensity output related to excretion of stool of horses.

FIG. 6 is a schematic diagram of a tilt detection device.

FIG. 7 is a diagram showing a tilt detection state body of the tilt detection device.

FIG. 8 is a schematic diagram of a tilt detection device according to another embodiment.

FIG. 9 is a graph showing the behavior of the odor intensity output related to the delivery of a horse in another embodiment.

[Explanation of symbols]

 Odor detection element 1 Detection circuit 5 Odor detection device 100 Signal processing unit A Judgment mechanism B Alarm transmission unit C Alarm unit D

 ──────────────────────────────────────────────────続 き Continued on the front page (71) Applicant 392011932 Shinko Mex Co., Ltd. 37-4, Niijima, Harima-cho, Kako-gun, Hyogo (71) Applicant 591036457 Mitsubishi Electric Engineering Co., Ltd. 2-6-1 Otemachi, Chiyoda-ku, Tokyo (71) Applicant 000190301 Shin-Cosmos Electric Co., Ltd. 2-5-4 Mitsuyanaka, Yodogawa-ku, Osaka-shi, Osaka (72) Inventor Kiyoharu Yano 58-16, Shinka-cho, Shizunai-cho, Shizunai-gun, Hokkaido, Japan New Cosmos Electric Co., Ltd. 2-5-4 Mitsuyanaka, Yodogawa-ku, Osaka-shi, Osaka

Claims (5)

[Claims] An odor detection element capable of detecting an odor from a livestock house capable of accommodating livestock is provided, and a detection circuit for detecting an odor intensity output from the odor detection element is provided, wherein the odor intensity output has a predetermined value. A livestock delivery management method for judging that the livestock is giving birth when it exceeds the limit. 2. A tilt detecting device to be attached to the tail of the livestock is provided, the duration of the tilt abnormalities of the tilt detecting device, the number of times of the tilt abnormalities per unit time, the tilt angle of the tail when the tilt abnormalities occur. The livestock delivery management method according to claim 1, wherein when it is detected that the livestock satisfies a predetermined criterion, the livestock is determined to be giving birth. 3. An odor detection element capable of detecting an odor from a livestock house capable of accommodating livestock, and a detection circuit detecting an odor intensity output from the odor detection element is provided, and the livestock based on the odor intensity output is provided. A livestock birth control device provided with a judgment mechanism for judging the sign of childbirth. 4. The livestock birth management according to claim 3, further comprising an inclination detecting device attached to the tail of the livestock, and a judging mechanism for judging a sign of childbirth of the livestock based on abnormal inclination of the inclination detecting device. apparatus. 5. The livestock delivery management device according to claim 3, wherein the livestock is a cow or a horse.