CN112889691B - Simple device for sheep respiratory metabolism experiment and testing method - Google Patents

Simple device for sheep respiratory metabolism experiment and testing method Download PDF

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Publication number
CN112889691B
CN112889691B CN202110046974.3A CN202110046974A CN112889691B CN 112889691 B CN112889691 B CN 112889691B CN 202110046974 A CN202110046974 A CN 202110046974A CN 112889691 B CN112889691 B CN 112889691B
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wall
gas
sheep
breathing chamber
hood
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CN112889691A (en
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曹阳
臧延青
张爱忠
姜宁
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Heilongjiang Bayi Agricultural University
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Heilongjiang Bayi Agricultural University
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K29/00—Other apparatus for animal husbandry
    • A01K29/005—Monitoring or measuring activity, e.g. detecting heat or mating
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K1/00—Housing animals; Equipment therefor
    • A01K1/01—Removal of dung or urine, e.g. from stables
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K5/00—Feeding devices for stock or game ; Feeding wagons; Feeding stacks
    • A01K5/01—Feed troughs; Feed pails
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K7/00—Watering equipment for stock or game
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/70—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in livestock or poultry

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Zoology (AREA)
  • Birds (AREA)
  • Biophysics (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Abstract

The invention belongs to the technical field of respiratory metabolism testing devices, and particularly relates to a simple device and a testing method for sheep respiratory metabolism experiments, wherein the simple device comprises a respiratory metabolism gas sampling device and a digestion metabolism fecaluria collecting device, and the respiratory metabolism gas sampling device comprises a hood-type respiratory chamber, a dehydration box, an air pump, an air flowmeter and an air sampling bag; the respiratory chamber, the dehydration box, the air pump and the gas flowmeter are sequentially connected, the gas flowmeter discharges part of gas into the atmosphere through a tee joint, and the other part of gas is collected through a gas sampling bag; the hood type breathing chamber is of a double-wall structure, an air inlet is communicated with a gap between the inner wall and the outer wall, vent holes are formed in the periphery of the inner wall, and an air outlet is communicated with an inner cavity of the inner wall; a round hole is formed in the other side wall of the hood type breathing chamber, and a sliding circular plate is arranged between the inner wall and the outer wall of the hood type breathing chamber at the round hole in a sliding and sealing manner; compare with current breath testing arrangement, this application has obviously promoted the accuracy of test result.

Description

Simple device for sheep respiratory metabolism experiment and testing method
Technical Field
The invention belongs to the technical field of respiratory metabolism testing devices, and particularly relates to a simple device and a testing method for sheep respiratory metabolism experiments.
Background
The method measures all components of respiratory and digestive metabolites of the sheep and the concentration change of all components, analyzes the nutrient balance of animals and the heat dissipation of organisms thereof, and is an important means for evaluating the requirements of animals with unit weight on nutrition and energy, evaluating feed conversion efficiency, nutritional value and effective energy value and researching energy metabolism rules.
Most of the existing respiratory metabolism testing devices are cage type testing devices, namely, a sheep is placed in a cage, one end of the cage is provided with an air inlet for entering fresh air, and the other end of the cage is provided with an exhaust hole for obtaining data through testing of exhaust gas.
Cage testing devices have a low accuracy of testing, at least two reasons, firstly, the cage is large, the mixing of the air discharged from the breathing holes in the cage is not uniform, and the concentration variation of the air discharged from the air discharge holes is large. Secondly, the gas volatilized from the urine and the excrement metabolized by the sheep is mixed into the respiratory metabolic gas to pollute the metabolic gas, so that the test result has larger deviation.
In order to further improve the accuracy of the test result, it is necessary to design a completely new respiratory metabolism testing device.
Disclosure of Invention
The simple device and the testing method for the sheep respiratory metabolism experiment are provided for solving the problem of low testing accuracy in the background technology.
The technical scheme provided by the invention is as follows: a simple device for sheep respiratory metabolism experiments comprises a respiratory metabolism gas sampling device and a digestive metabolism fecaluria collecting device, wherein the respiratory metabolism gas sampling device comprises a hood-type respiratory chamber, a dehydration box, an air pump, an air flowmeter and an air sampling bag; the head cover type breathing chamber is provided with an air inlet and an air outlet, the air outlet is communicated with the inlet of the dehydration box through a pipeline, the outlet of the dehydration box is communicated with the inlet of the air pump through a pipeline, the inlet of the air pump is communicated with the gas flowmeter through a pipeline, the gas flowmeter discharges part of gas into the atmosphere through a tee joint, and the other part of gas is collected through a gas sampling bag; the hood type breathing chamber is of a double-wall structure, a gap is reserved between the inner wall and the outer wall, the inner wall and the outer wall are connected through a support column, the air inlet and the air outlet are both positioned at the top of the hood type breathing chamber, the air inlet is communicated with the gap between the inner wall and the outer wall, vent holes are formed in the periphery of the inner wall, and the air outlet is communicated with an inner cavity of the inner wall; one side wall of the hood type breathing chamber is connected with a valve in a sealing way, the other side wall of the hood type breathing chamber is provided with a round hole, a sliding circular plate is arranged between the inner wall and the outer wall of the hood type breathing chamber at the round hole in a sliding and sealing way, the center of the sliding circular plate is provided with a sheep head extending inlet, the inner edge of the sheep head extending inlet is fixedly connected with soft and sealed neck enclosing cloth, and the inner edge of the neck enclosing cloth is closed up through a rubber band; the digestion and metabolism fecaluria collecting device comprises a standing frame for sheep to stand, the hood-type breathing chamber is vertically and slidably mounted at one end of the standing frame through a shaft sleeve, and one side with a sheep head extending port is attached to the standing frame; the standing frame is provided with a neck fixing assembly, the neck fixing assembly comprises two fixed cross rods and two vertical clamping rods, the two fixed cross rods are respectively called as an upper fixed cross rod and a lower fixed cross rod according to the position relation, two shaft sleeves are slidably sleeved on the lower fixed cross rod, the lower ends of the two clamping rods are respectively fixedly connected on the two shaft sleeves, so that the two clamping rods can axially move and circumferentially rotate relative to the lower fixed cross rod, the upper ends of the clamping rods are bent into arc-shaped hooks and hooked on the upper fixed cross rod, the clamping rods are of a telescopic structure and comprise two rods inserted with thick and thin parts and a spring connected between the two rods, under the elastic force of the spring, the thin rods have the tendency of being inserted into the thick rods, so that the clamping rods are stably hooked on the upper fixed cross rod, a pawl is respectively hinged on each clamping rod arc-shaped hook, the directions of the two pawls are deviated, two sections of ratchets with opposite inclination directions are upwards processed on the upper fixed cross rod corresponding to the pawl positions, the free ends of the two pawls are respectively abutted against the two sections of ratchet teeth, so that the two clamping rods are limited to be far away; the standing frame is fixedly connected with a horizontal net used for allowing sheep to stand and leak sheep excrement and urine, an excrement and urine separation net which is downward inclined is arranged below the horizontal net, a urine collection plate is arranged below the excrement and urine separation net, a urine discharge port is formed in the lowest point of the urine collection plate, a vertical excrement collection baffle is arranged at the downward inclined end of the excrement and urine separation net, and an excrement leakage port is reserved between the excrement collection baffle and the end portion of the excrement and urine separation net.
The further technical scheme is as follows: two automatic swinging fans which are arranged diagonally are arranged in the head-cover type breathing chamber.
The further technical scheme is as follows: the fixed pulley is arranged above the head-mask type breathing chamber and fixedly installed on the standing frame, the upper end of the head-mask type breathing chamber is fixedly connected with a pull rope, the pull rope bypasses the fixed pulley, the free end of the pull rope is fixedly connected with a hook, and the standing frame is fixedly connected with a hanging ring for fixing the hook.
The further technical scheme is as follows: the double walls of the hood type breathing chamber are both made of transparent materials.
A method for measuring respiratory metabolic gas by using a simple device for sheep respiratory metabolism experiments comprises the following steps:
s1: connecting all parts of a respiratory metabolic gas sampling device, placing a sheep on a standing frame, extending a sheep head into a hood-type breathing chamber, and placing sufficient feed and water into the hood-type breathing chamber through a sealing valve;
s2: starting the fan and the air pump to work continuously for 24 hours to form negative pressure in the hood type breathing chamber, so that fresh air outside the hood is sucked through the air inlet, discharged air is taken off through the dehydration box to influence the measured moisture, and the total volume Q of the air collected from the hood for 24 hours is measured by the gas flowmeter General assembly The gas sampling bag continuously collects gas, and the total gas collection amount of the gas sampling bag is Q 1 ；
S3: for gas sample Q 1 The type and the content of the gas are measured and analyzed, and the Q is calculated by a proportional method General assembly The type and content of the middle gas.
The invention has the beneficial effects that:
(1) structurally, the breathing chamber is provided with the hood, so that the digestion metabolites are prevented from polluting the respiration metabolites; the hood type breathing chamber is of a double-wall structure, external air can enter the inner cavity after passing through a rotating gap between the inner wall and the outer wall, and compared with the condition that the inner cavity is directly communicated with the external air, the design can prolong the path of breathing metabolic gas leakage and can avoid the leakage loss of breathing metabolic gas; a plurality of vent holes are formed in the periphery of the inner wall of the hood type breathing chamber, and the air entering the hood type breathing chamber is scattered and then mixed through the automatic swinging fan, so that the air in the hood type breathing chamber is mixed more uniformly; therefore, compared with the prior art, the method has higher test accuracy.
(2) The sliding circular plate can slide up, down, left and right in a sealing manner relative to the hood type breathing chamber, so that the device is not only suitable for testing sheep with different heights, but also can prevent the neck respiratory tract from being blocked by the extending port of the sheep head to cause breathing discomfort under the condition that the tested sheep are in different lying states at day and night, so that the comfort degree of the tested sheep is improved, the stress response is reduced, and the accuracy of test data is improved.
(3) According to the invention, the hood type breathing chamber can be quickly pulled upwards by a single person by pulling the pull rope, so that the tested sheep can conveniently leave from the standing frame.
(4) According to the invention, the digestion metabolites, namely the excrement and urine, can be automatically separated, and are convenient to collect independently.
(5) The neck fixing component can be quickly fixed and released, has high reliability and continuous adjustment, and is suitable for sheep of different body types.
(6) The test method adopted by the invention is a ratio analysis method, and qualitative and quantitative determination research is carried out on respiratory metabolic gas in a certain ratio, so that each component and content in the total respiratory metabolic gas are calculated.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic sectional view of the front side of the hood-type respiratory chamber according to the present invention.
Fig. 3 is a schematic sectional view of the side of the hood-type breathing chamber according to the present invention.
FIG. 4 is a schematic view of the neck attachment assembly of the present invention.
Fig. 5 is a view from a-a in fig. 4.
Fig. 6 is a top view of the upper fixed rail of the present invention.
FIG. 7 is a block diagram of the operation of the respiratory metabolic gas sampling apparatus according to the present invention.
In the figure: 1. a fixed pulley; 2. pulling a rope; 3. hooking; 4. a hood-type breathing chamber; 5. hanging a ring; 6. a standing frame; 7. a shaft sleeve; 8. a feed box; 9. a drinking trough; 10. a horizontal screen; 11. a feces-urine separation net; 12. a feces collecting baffle; 13. a feces leaking port; 14. a urination port; 15. a urine collection plate; 401. an outer wall; 402. a gap; 403. a support column; 404. an inner wall; 405. a vent hole; 406. an air outlet; 407. an air inlet; 408. a circular hole; 409. the sheep head is stretched into the mouth; 410. a sliding circular plate; 411. neck cloth; 412. a rubber band; 413. automatically swinging the fan; 601. an upper fixed cross bar; 602. a clamping rod; 603. a lower fixed cross bar; 604. a pawl; 605. ratchet teeth.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
The invention comprises a respiratory metabolic gas sampling device and a digestive metabolic fecaluria collecting device, wherein the respiratory metabolic gas sampling device comprises a hood-type breathing chamber 4, a dehydration box, an air pump, an air flow meter and an air sampling bag; the hood type breathing chamber 4 is provided with an air inlet 407 and an air outlet 406, the air outlet 406 is communicated with the inlet of the dehydration box through a pipeline, anhydrous copper sulfate is filled in the dehydration box to remove moisture influencing the test, the outlet of the dehydration box is communicated with the inlet of the air pump through a pipeline, the inlet of the air pump is communicated with the gas flowmeter through a pipeline, the gas flowmeter discharges part of gas into the atmosphere through a tee joint, and the other part of gas is collected through a gas sampling bag.
The hood-type breathing chamber 4 is of a double-wall structure, a gap 402 is reserved between an inner wall 404 and an outer wall 401, the inner wall 404 and the outer wall 401 are connected through a support column 403, an air inlet 407 and an air outlet 406 are both positioned at the top of the hood-type breathing chamber 4, the air inlet 407 is communicated with the gap 402 between the inner wall and the outer wall 401, and the air outlet 406 is communicated with an inner cavity of the inner wall 404; the outside air can enter the inner cavity after passing through the revolving gap 402 between the inner wall and the outer wall 401, and compared with the condition that the inner cavity is directly communicated with the outside air, the design can prolong the path of the leakage of the respiratory metabolic gas and can avoid the leakage loss of the respiratory metabolic gas.
Vent holes 405 are formed in the periphery of the inner wall 404, and the air entering the inner wall is scattered and then mixed through the automatic swinging fan 413, so that the air in the hood-type breathing chamber 4 is mixed more uniformly; therefore, compared with the prior art, the method has higher test accuracy.
One side wall of the hood type breathing chamber 4 is hermetically connected with a valve, and a feed box 8 filled with feed and a drinking trough 9 filled with clear water are placed in the hood type breathing chamber 4 through the valve for sheep to eat.
A round hole 408 is formed in the other side wall of the hood type breathing chamber 4, a sliding circular plate 410 is arranged between the inner wall 404 and the outer wall 401 of the hood type breathing chamber 4 at the round hole 408 in a sliding and sealing mode, a sheep head extending opening 409 is processed in the center of the sliding circular plate 410, soft and sealed neck enclosing cloth 411 is fixedly connected to the inner edge of the sheep head extending opening 409, the inner edge of the neck enclosing cloth 411 is closed up through a rubber band 412, and the situation that the head of a sheep extends into the hood and then the periphery of the neck is breathable is avoided; the sliding circular plate 410 can slide up and down, left and right, and is not only suitable for testing sheep with different heights, but also capable of preventing the neck respiratory tract from being blocked by the sheep head stretching opening 409 to cause breathing discomfort under the condition that the test sheep is in different lying states at day and night, so that the comfort degree of the test sheep is improved, the stress response is reduced, and the accuracy of test data is favorably improved.
Digestion metabolism fecaluria collection device stand the frame 6 that uses including the sheep, hood-type respiratory chamber 4 through the vertical slidable mounting of axle sleeve 7 in the one end of standing frame 6, wherein have the sheep head and stretch into mouth 409 one side and paste with standing frame 6 and lean on, stand 6 both sides rigid coupling of frame has the rail, prevents that the sheep from standing and falling from standing frame 6. As shown in fig. 1, a fixed pulley 1 is arranged above a head-mask type breathing chamber 4, the fixed pulley 1 is fixedly installed on a standing frame 6, a pull rope 2 is fixedly connected to the upper end of the head-mask type breathing chamber 4, the pull rope 2 is wound around the fixed pulley 1, a hook 3 is fixedly connected to the free end of the pull rope 2, a hanging ring 5 used for fixing the hook 3 is fixedly connected to the standing frame 6, the head-mask type breathing chamber 4 can be pulled upwards by a single person quickly by pulling the pull rope 2, and the sheep can leave from the standing frame 6 after being tested conveniently.
Be provided with the fixed subassembly of neck on the standing frame 6, the fixed subassembly card of neck is at the neck of sheep for prevent that the sheepshead from extracting from hood-type respiratory chamber 4. The neck fixing component comprises two fixing cross rods and two vertical clamping rods 602, the two fixing cross rods are respectively called as an upper fixing cross rod 601 and a lower fixing cross rod 603 according to the position relation, the lower fixing cross rod 603 is sleeved with two shaft sleeves 7 in a sliding way, the lower ends of the two clamping rods 602 are respectively fixedly connected on the two shaft sleeves 7, so that the two clamping rods 602 can axially move and circumferentially rotate relative to the lower fixing cross rod 603, the upper ends of the clamping rods 602 are bent into arc-shaped hooks and hooked on the upper fixing cross rod 601, the clamping rods 602 are of a telescopic structure and comprise two thick and thin inserted rods and springs connected between the two rods, under the elastic force action of the springs, the thin rods have the tendency of being inserted into the thick rods, so that the clamping rods 602 are stably hooked on the upper fixing cross rod 601, the arc-shaped hooks at the upper end of each clamping rod 602 are respectively hinged with a pawl 604, and the directions of the two pawls 604 are deviated, two sections of ratchet teeth 605 with opposite inclination directions are axially processed on the upper fixed cross rod 601 corresponding to the positions of the pawls 604, and the free ends of the two pawls 604 abut against the two sections of ratchet teeth 605 respectively, so that the two clamping rods 602 are limited to be far away. When in use, the clamping rod 602 is pulled upwards, so that the pawl 604 can be separated from the ratchet teeth 605; therefore, the clamping rods 602 can move left and right, after hands are released, the telescopic clamping rods 602 automatically retract, the pawls 604 are meshed with the ratchet teeth 605 again, and therefore the two clamping rods 602 can only move towards the direction of approaching each other. The displacement of every turn removal is the distance of a ratchet tooth 605, so, this application adjustment accuracy is high, and the control range is wide, is applicable to the sheep of different sizes.
A horizontal net 10 for allowing sheep to stand and leak sheep excrement and urine is fixedly connected to the standing frame 6, the sheep stands on the horizontal net 10, meshes of the horizontal net 10 are smaller than the size of sheep hooves, an excrement and urine separation net 11 which inclines downwards is arranged below the horizontal net 10, a urine collection plate 15 is arranged below the excrement and urine separation net 11, urine is collected on the urine collection plate 15 after leaking from the horizontal net 10 and the excrement and urine separation net 11 in sequence, and a urine discharge port 14 is arranged at the lowest point of the urine collection plate 15; the downward inclined end of the excrement-urine separation net 11 is provided with a vertical excrement collecting baffle plate 12, an excrement leakage port 13 is reserved between the excrement collecting baffle plate 12 and the end part of the excrement-urine separation net 11, and the round sheep manure rolls down from the upper end of the excrement-urine separation net 11 to the lower end and is finally collected through the excrement leakage port 13.
Two automatic swinging fans 413 arranged diagonally are installed in the hood type breathing chamber 4, and the two automatic swinging fans 413 arranged diagonally are more favorable for air circulation in the whole breathing chamber, so that respiratory metabolic gas is uniformly mixed in the hood type breathing chamber 4.
The double walls of the hood type breathing chamber 4 are made of transparent materials, so that the sight of the sheep is farther, and compared with the situation that the sheep head is in a dark box, the visual field range of the sheep is improved, the stress response of the sheep is reduced, and the normal breathing of the sheep is kept.
A method for measuring respiratory metabolic gas by using a simple device for sheep respiratory metabolism experiments comprises the following steps:
s1: connecting all parts (a dehydration box, an air pump, an air flow meter and an air sampling bag) of the respiratory metabolism gas sampling device, placing the sheep on a standing frame 6, stretching the sheep head into a hood type breathing chamber 4, clamping the neck, and placing sufficient feed and water in the hood type breathing chamber 4 through a sealing valve;
s2: the fan and the air pump are started to work continuously for 24 hours, so that negative pressure is formed in the hood type breathing chamber 4, fresh air outside the hood is promoted to be sucked in through the air inlet 407, the discharged air is removed through the dehydration box to influence the measured moisture, and the total air flow measured by the air flow meter is Q General assembly The gas sampling bag continuously collects gas, and the total gas collection amount of the gas sampling bag is Q 1 ；
S3: for gas sample Q 1 The type and the content of the gas are measured and analyzed, and a proportional method is used for calculating Q General (1) The type and content of the middle gas.
In the invention, the gas sampling bag is replaced between day and night so as to measure the change of the components and the content of the respiratory metabolites between day and night.
The invention has the following reasons that the air pump wind degree is different during each measurement, and the test result is not influenced: when wind speed is high, Q General assembly Likewise increased by the same factor, Q 1 The content of middle metabolic gas is low, the proportion of test gas in the total gas is also reduced, so after calculation, Q General (1) The kind and content of the gas are not changed.
In conclusion, the hood-type breathing chamber 4 is adopted, so that the digestion metabolites are prevented from polluting the respiration metabolites; the hood type breathing chamber 4 is of a double-wall structure, external air can enter the inner cavity after passing through a rotating gap 402 between the inner wall and the outer wall, and compared with the mode that the inner cavity is directly communicated with the external air, the design can prolong the path of respiratory metabolic gas leakage and can avoid the leakage loss of respiratory metabolic gas; a plurality of vent holes 405 are formed around the inner wall of the hood-type breathing chamber 4, and the air entering the hood-type breathing chamber 4 is dispersed and then mixed by an automatic swinging fan 413, so that the air in the hood-type breathing chamber 4 is mixed more uniformly; therefore, compared with the prior art, the invention has higher test accuracy; the sliding circular plate 410 can slide up, down, left and right in a sealing manner relative to the hood type breathing chamber 4, so that the device is not only suitable for testing sheep with different heights, but also can prevent the sheep from being clamped by the neck respiratory tract by the sheep head extension port 409 to cause breathing discomfort under the condition that the test sheep are in different lying states at a day and night station, so that the comfort degree of the test sheep is improved, the stress response is reduced, and the accuracy of test data is improved; according to the invention, the hood-type breathing chamber 4 can be quickly pulled upwards by a single person by pulling the pull rope 2, so that the tested sheep can conveniently leave from the standing frame 6; according to the invention, the digestion metabolites, namely the excrement and urine, can be automatically separated, and can be conveniently and independently collected; the neck fixing component can be quickly fixed and released, has high reliability and continuous adjustment, and is suitable for sheep of different body types.

Claims (5)

1. The utility model provides a simple and easy device is used in sheep experiment with breathing metabolism which characterized in that: the device comprises a respiratory metabolic gas sampling device and a digestive metabolic fecaluria collecting device, wherein the respiratory metabolic gas sampling device comprises a hood type breathing chamber (4), a dehydration box, an air pump, an air flow meter and an air sampling bag; the hood type breathing chamber (4) is provided with an air inlet (407) and an air outlet (406), the air outlet (406) is communicated with the inlet of the dehydration box through a pipeline, the outlet of the dehydration box is communicated with the inlet of the air pump through a pipeline, the inlet of the air pump is communicated with the gas flowmeter through a pipeline, the gas flowmeter discharges part of gas into the atmosphere through a tee joint, and the other part of gas is collected through a gas sampling bag;
the hood type breathing chamber (4) is of a double-wall structure, a gap (402) is reserved between an inner wall (404) and an outer wall (401), the inner wall (404) and the outer wall (401) are connected through a support column (403), an air inlet (407) and an air outlet (406) are both positioned at the top of the hood type breathing chamber (4), the air inlet (407) is communicated with the gap (402) between the inner wall and the outer wall (401), vent holes (405) are processed on the periphery of the inner wall (404), and the air outlet (406) is communicated with an inner cavity of the inner wall (404); one side wall of the hood type breathing chamber (4) is connected with a valve in a sealing manner, the other side wall of the hood type breathing chamber (4) is provided with a round hole (408), a sliding circular plate (410) is arranged between the inner wall (404) and the outer wall (401) of the hood type breathing chamber (4) at the round hole (408) in a sliding and sealing manner, a sheep head extending opening (409) is processed in the center of the sliding circular plate (410), soft and sealed neck surrounding cloth (411) is fixedly connected to the inner edge of the sheep head extending opening (409), and the inner edge of the neck surrounding cloth (411) is closed up through a rubber band (412);
the digestion and metabolism fecaluria collection device comprises a standing frame (6) for sheep to stand, the hood-type breathing chamber (4) is vertically and slidably mounted at one end of the standing frame (6) through a shaft sleeve (7), and one side with a sheep head extending port (409) is attached to the standing frame (6);
the standing frame (6) is provided with a neck fixing component, the neck fixing component comprises two fixing cross rods and two vertical clamping rods (602), the two fixing cross rods are respectively called as an upper fixing cross rod (601) and a lower fixing cross rod (603) according to the position relation, two shaft sleeves (7) are slidably sleeved on the lower fixing cross rod (603), the lower ends of the two clamping rods (602) are fixedly connected to the two shaft sleeves (7) respectively, so that the two clamping rods (602) can axially move and circumferentially rotate relative to the lower fixing cross rod (603), the upper ends of the clamping rods (602) are bent into arc-shaped hooks and are hooked on the upper fixing cross rod (601), the clamping rods (602) are of a telescopic structure and comprise two thick and thin inserted rods and springs connected between the two rods, under the elastic action of the springs, the thin rods have the trend of being inserted into the thick rods, so that the stable hooks of the clamping rods (602) are placed on the upper fixing cross rod (601), a pawl (604) is hinged to an arc-shaped hook at the upper end of each clamping rod (602), the directions of the two pawls (604) are deviated, two sections of ratchet teeth (605) with opposite inclination directions are axially processed on an upper fixed cross rod (601) corresponding to the positions of the pawls (604), and free ends of the two pawls (604) respectively abut against the two sections of ratchet teeth (605), so that the two clamping rods (602) are limited to be far away;
a horizontal net (10) used for allowing sheep to stand and leak sheep excrement and urine is fixedly connected to the standing frame (6), an excrement and urine separation net (11) which inclines downwards is arranged below the horizontal net (10), a urine collection plate (15) is arranged below the excrement and urine separation net (11), a urine discharge port (14) is formed in the lowest point of the urine collection plate (15), a vertical excrement collection baffle plate (12) is arranged at the downward inclined end of the excrement and urine separation net (11), and an excrement leakage port (13) is reserved between the excrement collection baffle plate (12) and the end portion of the excrement and urine separation net (11).
2. The simple device for the sheep respiratory metabolism experiment of claim 1, which is characterized in that: two automatic swinging fans (413) which are arranged diagonally are arranged in the hood type breathing chamber (4).
3. The simple device for the sheep respiratory metabolism experiment of claim 1, which is characterized in that: fixed pulley (1) are arranged above hood type breathing chamber (4), fixed pulley (1) fixed mounting on standing frame (6), and the upper end rigid coupling of hood type breathing chamber (4) has stay cord (2), and stay cord (2) are walked around from fixed pulley (1), and stay cord (2) free end rigid coupling has couple (3), standing frame (6) on the rigid coupling have link (5) that are used for fixed couple (3).
4. The simple device for the sheep respiratory metabolism experiment of claim 1, which is characterized in that: the double walls of the hood-type breathing chamber (4) are made of transparent materials.
5. The method for measuring the respiratory metabolism gas by using the simple device for the sheep respiratory metabolism experiment, which is disclosed by claim 2, is characterized by comprising the following steps of:
s1: connecting all parts of the respiratory metabolic gas sampling device, placing a sheep on a standing frame (6), extending the sheep head into a hood type breathing chamber (4), and placing sufficient feed and water into the hood type breathing chamber (4) through a sealing valve;
s2: starting the fan and the air pump for 24 hours to work uninterruptedly to form negative pressure in the hood type breathing chamber (4) to promote fresh air outside the hood to be sucked through the air inlet (407), the discharged air is removed through the dehydration box to influence the measured moisture, and the gas flowmeter measures the total volume Q of the air collected from the inside of the hood for 24 hours General assembly The gas sampling bag continuously collects gas, and the total gas collection amount of the gas sampling bag is Q 1 ；
S3: for gas sample Q 1 The gas type and the content are measured and analyzed, and the Q is calculated by using a proportional extrapolation algorithm General assembly The type and content of the middle gas.
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