CN104067987B - Method for raising growing and fattening pigs with movable pig house - Google Patents

Abstract

The present invention relates to the method for raising growing-finishing pig with movable hog house, belong to Animal Husbandry Engineering field.Movable hog house is made up of galvanized pipe frame and cladding material; Top portion ventilation window adopts dislocation ventilation and lighting structure; Before and after both sides establish the manual volume film vent window of band self-locking device, volume film height can be regulated according to temperature, separately add curtain, in order to winter or temperature low time use; Pig house two ends respectively establish single open-door 2 to overlap, and blower fan is installed in one end, and the other end installs wet curtain.The present invention uses removable economical growing-finishing pig drylot feeding to support growing-finishing pig, and this pig house component is all detachable, mobile, does not solidify soil, do not destroy arable land and environment, to be conducive to kind, to support rotation, be often mobilely conducive to control and prevention of disease, construction cost also greatly reduces.

Description

Method for raising growing and fattening pigs with movable pig house

1. Technical field

The invention relates to a method for raising growing and fattening pigs in a movable pig house, belongs to the field of animal husbandry engineering, and is used for the design and use of intensive pig farms.

2. Background technology

Traditional pens are all brick-concrete or brick-wood structures, and the ground has been solidified. Once the pig farm is abandoned, the site cannot be effectively recultivated. In my country, especially in Jiangsu, where there are many people and little land, there is a contradiction between solidified land and arable land in the pig farming industry, and the long-term presence of pig farms in one place also brings problems in disease control. The development of an economical movable pig house suitable for the characteristics of our country, the components can be disassembled and moved, is conducive to the rotation of planting and breeding, does not damage the cultivated land and the environment, and is also conducive to the prevention and control of diseases, which is in line with the requirements for the construction of large-scale ecological and environmentally friendly pig farms .

The movable and economical growing and finishing pig house is a new type of pig house model, which adapts to the development trend of the international free-range feeding system. It adopts component design, does not solidify the land, reduces the approval procedures for the construction of pig farms, and does not damage the cultivated land and the environment. , suitable for promotion and application in Jiangsu and its surrounding areas. The components of the new pig house can be disassembled, assembled and moved. Frequent movement is conducive to the rotation of planting and breeding. As organic fertilizer, excrement and urine will not pollute the environment. Frequent movement is also conducive to disease prevention and control, which is in line with the construction of moderate-scale ecological and environmental protection pig farms. Require. The pig house is low in cost and easy to promote. The design of the pig house can resist 9-10 winds, and the anti-snow load is ≤15Kg/㎡. With the demonstration and promotion in pig production, the prospect of movable economical pig houses is promising.

3. Contents of the invention

technical problem

The purpose of the present invention is to provide a method for raising growing and fattening pigs with a movable pig house. The designed movable pig house components can be disassembled and moved without solidifying the land, without damaging the cultivated land and the environment, which is conducive to the rotation of planting and raising, and can be moved frequently It is conducive to epidemic prevention and control, and the construction cost is also greatly reduced.

Technical solutions

The method for raising growing and fattening pigs with a movable pig house is characterized in that:

(1) Design of movable pig house greenhouse:

The movable pig house shed is composed of galvanized pipe pig house shed frame (1) and covering materials; the top ventilation window (5) adopts a misplaced ventilation and lighting structure, with a height of 0.6m, and adopts roller shutters for ventilation. ventilation and lighting;

There are manual roll film ventilation windows (6) with self-locking devices on the front and rear sides. The roll film height is about 1 meter, and the ventilation window (6) width is the length of the pig house. The temperature adjusts the height of the roll film;

Hanging curtains (7) are additionally installed on both sides of the pig house greenhouse for use in winter or when the temperature is low;

The top covering material is composed of an outer plastic film (2), with insulation cotton 3-5cm in the middle (3), and an inner plastic film (4);

The covering materials on both sides are covered with domestic single-layer longevity film;

Two sets of single doors (8) are provided at both ends of the pig house, a fan (9) is installed at one end, and a wet curtain (10) or a fan (9) is installed at the other end. .

The specifications and dimensions of the pig house greenhouse: the building width is 10.5 meters, the span is 0.8 meters, the shoulder height is 1.9 to 2.2 meters, the top height is 5.0 meters, and the length can be based on actual needs;

The arch tubes and cable stays of the piggery shed are made of φ32X2 hot-dip galvanized round tubes, the middle column is a 60X60X2 hot-dip galvanized square tube, the top longitudinal truss is a 50X30X2 galvanized tube, and the two side longitudinal tubes are all made of φ25X1.5 hot-dip galvanized round tube;

Special hot-dip galvanized card slots for greenhouses are adopted, with a thickness of 0.7 mm. They are arranged on both sides of the greenhouse, with 2 lanes on each side, and the plastic-coated wires are used to fix the film; the connecting parts are all galvanized; the greenhouse scaffolding is directly inserted into the ground without making Foundation, ground piles are 20cmX20cmX40cm cement columns, with an interval of 160cm;

Each pig house shed has 4 sets of single doors (8). The door size is 0.9m wide * 1.8m high. It is located at both ends of the pig house shed.

The hanging curtain (7) is composed of an outer plastic film (2), an insulating cotton 3-5cm (3) in the middle, and an inner plastic film (4), which is the same as the top covering material; the height is 1.2 meters, and it is directly connected to the front and back of the pig shed by ropes On the steel pipe hooks of the scaffolding on both sides;

Each pig house greenhouse is equipped with 2 circulation fans, which are installed at one end of the pig house, and the other end is equipped with a wet curtain or 2 circulation fans, which are blown alternately with the fans at the other end. The air volume of the circulation fan: 4000m ³ /h, the total pressure: 149Pa , Power: 120W.

(2) Feeding methods for growing and finishing pigs:

Growing and fattening pigs refer to the stage from nursery to market, and the age is generally 3 months to 6 months;

Spring and autumn: 1) When the temperature is lower than 10 degrees, use the curtains on both sides (7); 2) Open the ventilation window on the top; 3) When the daytime temperature is higher than 20 degrees, open the manual roll-up ventilation window on both sides (6) ) to adjust the temperature, close the manual film ventilation windows (6) on both sides when the night temperature is 10 degrees;

Summer: 1) Do not use the hanging curtains (7) on both sides; 2) Open the top ventilation window (5); 3) Open the manual roll-up ventilation windows (6) on both sides; 4) When the temperature is greater than 35 degrees at noon, put down the two The plastic film roller blind on the side, close the ventilation window (5) on the top, and open the fan system (9) and wet curtain system (10) to cool down.

Winter: 1) Use the hanging curtains (7) on both sides; 2) Partially open the top ventilation window (5) for ventilation; 3) Remove the hanging curtains (7) on the south side when the temperature is higher than The manual roll film ventilation window (6) on the side is opened slightly, so that ventilation and sunlight can enter the house.

Beneficial effect

At present, the construction of pig farms is a solidified facility, and the construction land needs to be reported to the land department for approval. The invention can be disassembled and moved without solidifying the land, which solves the contradiction between the current industrialized pig farming and cultivated land. The pig house is fixed in one place for a long time, and there are many pig diseases. If the pig house is often moved to a new place, the occurrence of the disease can be reduced. Compared with the traditional brick-concrete pig house, the cost of the movable economic pig house of the present invention is greatly reduced; the traditional brick-concrete pig house is currently about 750 yuan per square meter, and the movable economic pig house is about 750 yuan per square meter. 250 yuan, which is only about one-third of the brick-and-concrete pig house.

The present invention has been used in pig farms such as Jiangsu Hongze Xinxiang Pig Industry Co., Ltd., Nanjing Hongwei Animal Husbandry Technology Co., Ltd., and achieved the desired effect. Compared with pig houses with brick-concrete structure, the temperature inside the house has a difference of 2-3 degrees, and the humidity, wind speed and harmful gases are better. See Table 1 for the effect of raising pigs, and there was no significant difference in growth rate and feed-to-meat ratio.

Table 1 Comparative study on the effects of raising pigs

Types of Quantity (head) Daily weight gain (g) Feed to meat ratio Pig house of the present invention 35 753 2.92 Brick-concrete structure pig house 34 747 2.89

4. Description of drawings

Figure 1 The side of the movable and economical grow-finish pig house

Figure 2 The other side of the movable economical grow-finish pig house

1-Galvanized pipe steel frame; 2-Outer plastic film; 3-Insulation cotton in the middle; 4-Inner plastic film; 5-Top ventilation window; 6-Manual rolling film ventilation window; ; 9-fan; 10-wet curtain.

5. Specific implementation

The method for raising growing and fattening pigs with a movable pig house is characterized in that:

(1) Design of movable pig house greenhouse:

The movable pig house shed is composed of galvanized pipe pig house shed frame (1) and covering materials; the top ventilation window (5) adopts a misplaced ventilation and lighting structure, with a height of 0.6m, and adopts roller shutters for ventilation. ventilation and lighting;

There are manual roll film ventilation windows (6) with self-locking devices on the front and rear sides. The roll film height is about 1 meter, and the ventilation window (6) width is the length of the pig house. The temperature adjusts the height of the roll film;

Hanging curtains (7) are additionally installed on both sides of the ventilation window (6) for use in winter or when the temperature is low;

The top covering material is composed of an outer plastic film (2), with insulation cotton 3-5cm in the middle (3), and an inner plastic film (4);

The covering materials on both sides are covered with domestic single-layer longevity film;

Two sets of single doors (8) are provided at both ends of the pig house, a fan (9) is installed at one end, and a wet curtain (10) or a fan (9) is installed at the other end.

The specifications and dimensions of the pig house greenhouse: the building width is 10.5 meters, the span is 0.8 meters, the shoulder height is 1.9 to 2.2 meters, the top height is 5.0 meters, and the length can be based on actual needs;

The arch tubes and cable stays of the pig house shed are made of φ32X2 hot-dip galvanized round tubes, the middle column is a 60X60X2 hot-dip galvanized square tube, the top longitudinal truss is a 50X30X2 galvanized tube, and the two side longitudinal tubes are all made of φ25X1.5 hot-dip galvanized round tube;

Special hot-dip galvanized card slots for greenhouses are adopted, with a thickness of 0.7 mm. They are arranged on both sides of the greenhouse, with 2 lanes on each side, and the plastic-coated wires are used to fix the film; the connecting parts are all galvanized; the greenhouse scaffolding is directly inserted into the ground without making For the foundation, the ground pile is a 20cmX20cmX40cm cement column, and a ground pile is set for every two arches (160cm apart);

Each pig house shed has 4 sets of single doors (8). The door size is 0.9m wide * 1.8m high. It is located at both ends of the pig house shed.

The hanging curtain (7) is composed of an outer plastic film (2), a 3-5cm thermal insulation cotton (3) in the middle, and an inner plastic film (4). The structure is the same as the top covering material; the height is 1.2 meters, and it is directly connected to the pig shed by a rope On the steel pipe hooks on the front and rear sides of the scaffold;

Each pig house greenhouse is equipped with 2 circulation fans, which are installed at one end of the pig house, and the other end is equipped with a wet curtain or 2 circulation fans, which are blown alternately with the fans at the other end. The air volume of the circulation fan: 4000m ³ /h, the total pressure: 149Pa , Power: 120W.

(2) Feeding methods for growing and finishing pigs:

Growing and fattening pigs refer to the stage from nursery to market, and the age is generally 3 months to 6 months;

Spring and autumn: 1) When the temperature is lower than 10 degrees, use the curtains on both sides (7); 2) Open the ventilation window on the top; 3) When the daytime temperature is higher than 20 degrees, open the manual roll-up ventilation window on both sides (6) ) to adjust the temperature, close the manual film ventilation windows (6) on both sides when the night temperature is 10 degrees;

Summer: 1) Do not use the hanging curtains (7) on both sides; 2) Open the top ventilation window (5); 3) Open the manual roll-up ventilation windows (6) on both sides; 4) When the temperature is greater than 35 degrees at noon, put down the two The plastic film roller blind on the side, close the ventilation window (5) on the top, and open the fan system (9) and wet curtain system (10) to cool down.

Winter: 1) Use the hanging curtains (7) on both sides; 2) Partially open the top ventilation window (5) for ventilation; 3) Remove the hanging curtains (7) on the south side when the temperature is higher than 10 degrees on sunny days, The manual roll film ventilation window (6) on the south side is opened slightly so that ventilation and sunlight can enter the house.

(1) Exploration process

1. Preliminary design

The preliminary design is based on the design principles of vegetable greenhouses. The size meets the requirements for raising pigs. A skylight is added on the top, manual roller shutters are added on both sides, and the interior meets the requirements of a double row pig house.

(1) Wind load: ≤20m/s; Snow load: ≤10Kg/㎡; Suspension load: None.

Skeleton: φ32X1.5 hot-dip galvanized round tubes are used for arch tubes and diagonal stays, and φ25X1.2 hot-dip galvanized round tubes are used for the three longitudinal stretch tubes. Greenhouse-specific hot-dip galvanized card slots are used, with a thickness of 0.7 mm. They are arranged on both sides of the greenhouse, with 2 lanes on each side, plastic-coated wires to fix the film; a tie rod at an interval of 5 meters; the connectors are all galvanized and directly inserted into the greenhouse frame Underground, without making a foundation. The ground pile is a 20cmX20cmX40cm cement column, and one ground pile is set for every two arches (160cm apart);

(2) The covering material is a single-layer longevity film, plus a sunshade net.

(3) After one year of pig breeding test, the results are as follows:

Table 2 Changes in the temperature of the greenhouse pig house and the monthly average temperature of the traditional pig house and outdoor

Note: Capital letters indicate extremely significant differences, P<0.01; lowercase letters indicate significant differences, P<0.05

The seasonal change of the temperature in the greenhouse pig house is close to the temperature outside the house, and the room temperature difference with the traditional pig house increases, especially in summer and winter, which is not conducive to raising pigs.

Table 3 Changes in the temperature difference between day and night in greenhouse pig houses in each season

season Pig shed traditional pig house Outdoor temperature summer 6.89±0.16a 3.05±0.41b 5.92±0.39 autumn 9.42±0.80A 4.01±0.64B 9.47±0.77 winter 8.42±0.72A 3.18±0.47B 7.86±0.34

Note: Capital letters indicate extremely significant differences, P<0.01; lowercase letters indicate significant differences, P<0.05

The temperature difference between day and night in the greenhouse pig house is large, which is close to the temperature outside the house and higher than that of the traditional pig house, which is not conducive to raising pigs.

Table 4 Humidity of greenhouse pig house and traditional pig house and outdoor monthly average humidity changes

Note: Capital letters indicate extremely significant differences, P<0.01; lowercase letters indicate significant differences, P<0.05

The humidity in the greenhouse pig house is close to that of the outdoor, which is higher than that of the traditional pig house.

Table 5 Changes in ammonia concentration in pig houses in greenhouses

month Ammonia concentration in greenhouse pig house/ppm Ammonia concentration in traditional pig house/ppm 9 0.45±0.09A 2.20±0.71B 10 1.00±0.15A 3.06±0.85B 11 1.07±0.04A 3.73±0.48B 12 1.50±0.84A 4.16±1.1B 1 2.22±1.14A 4.41±1.25B 2 3.10±0.33A 4.43±1.30B 3 1.57±0.09A 3.70±0.34b

Note: Capital letters indicate extremely significant difference, P<0.01

The ammonia concentration in the greenhouse pig house is lower than that in the traditional pig house, which is beneficial to raising pigs.

Table 6 The wind speed value in the greenhouse in summer

month Greenhouse pig house v(m/s) Traditional pig house v(m/s) Pig shed with fan turned on July 0.18±0.07 0.09±0.02 - August 0.16±0.01B 0.14±0.04B 0.36±0.09A

Note: Capital letters indicate extremely significant differences, P<0.01; lowercase letters indicate significant differences, P<0.05

The wind speed in the greenhouse pig house is higher than that of the traditional pig house, which is conducive to raising pigs.

2. Optimization and improvement

Based on the above research, the optimal design of the greenhouse pig house was carried out.

(1) Retain the advantages of the pig house design in the greenhouse and improve its shortcomings to achieve the effect suitable for raising pigs

(2) Improve snow resistance and suspension load

(3) The covering material adopts "longevity film + thermal insulation cotton + longevity film", and "longevity film + thermal insulation cotton + longevity film" hanging curtains are used on both sides (that is, heat preservation and convenient operation).

(4) Increase the fan and wet curtain system, which is conducive to cooling in summer

The optimized pig house is tested and further improved to form the present invention. The movable economical pig house of the present invention can not only meet the effect of raising and producing fattening pigs, but also can be disassembled and moved with low cost.

(2) Methods and techniques for stereotypes

A. The main structure of the pig house

1. Pig house performance indicators.

(1) Wind load: ≤20m/s

(2) Anti-snow load: ≤15Kg/㎡

(3) Suspension load: ≤0.15N/㎡

2. Technical requirements for construction

Specifications: span of 10.5 meters, the arch tube is Ф32 galvanized round tube with an arch spacing of 0.8 meters; the top height is about 5.0 meters; the shoulder height is about 1.8-2.2 meters; there are 4 card slots on the left and right sides; Manual roll-up ventilation system with self-locking device, the roll-up height is about 1 meter, and the film-pressing rope is buckled between the arch tubes after the film is applied, and doors are installed at both ends.

3. Specific construction requirements

It has the advantages of simple structure, convenient installation and low cost. It is mainly suitable for areas with less wind and snow.

(1) Specifications and dimensions

The building width is -10.5 meters, the span is -0.8 meters, the shoulder height is about -1.8 to 2.2 meters, and the top height is about -5.0 meters. The length can be according to actual needs.

(2) Skeleton material

Scaffold arch tubes and cable stays are made of φ32X2 hot-dip galvanized round tubes, the middle columns are 60X60X2 hot-dip galvanized square tubes, the top longitudinal trusses are 50X30X2 galvanized tubes, and the two side longitudinal tubes are all made of φ25X1.5 hot-dip galvanized square tubes. Galvanized round pipe;

Greenhouse-specific hot-dip galvanized card slots are used, with a thickness of 0.7 mm, arranged on both sides of the greenhouse, with 2 lanes on each side, and plastic-coated wires to fix the film; the connecting parts are all galvanized

The skeleton is inserted directly into the ground without making a foundation. Ground piles every 2 gears;

(3) ventilation

The ventilation windows on both sides adopt manual ventilation, and the height is about 1 meter. The top adopts manual ventilation, and the height is about 0.6 meters. The film at the ventilation part of the roller shutter is 8 silk film, which is anti-aging.

(4) Covering material

The top is made of film + thermal insulation cotton + film, and the two sides are covered with domestic single-layer longevity film, which has good airtight performance and long service life. It is fixed by domestic lamination line and has good wind resistance.

(5) door

Each pig house has 4 sets of single doors, the size of the door is 0.9 (width)*1.8 (height), and it is located at both ends. The door frame is galvanized pipe and covered with film.

(6) Hanging curtains on both sides (with insulation cotton inside)

In order to keep warm in winter, add hanging curtains (7) on the front and rear sides of the pig house greenhouse. The hanging curtains (7) are composed of outer plastic film (2), 3-5cm insulation cotton in the middle (3), and inner plastic film (4). The structure is the same as the top covering material; the height is 1.2 meters, and the rope is directly connected to the steel pipe hooks on the front and rear sides of the pig shed;

B. Circulation fan system

Using domestic famous brand products, it has the characteristics of long operating life, low power consumption, low noise and convenient maintenance. The design of the fan takes into account the requirements of the crops on the wind speed.

1. The function of the circulation fan:

Improve the uniformity of temperature in the greenhouse and the uniformity of humidity in the greenhouse.

2. Parameters of circulation fan

Air volume: 4000m ³ /h, total pressure: 149Pa, power: 120W.

3. Quantity and layout of circulation fans and wet curtains

Each building is equipped with 2 circulation fans, installed at one end of the pig house, and a wet curtain is installed at the other end (2 circulation fans can also be installed to blow against the fan at the other end).

C. System power distribution:

1. The main electrical load of the greenhouse is shown in the table (single seat):

serial number name quantity Phase single load Remark 1 Circulation fan 8 units three phase 0.12KW

2. Brief description

(1) The main load is as shown in the above table;

(2) Require external power lines to be led to each building;

(3) The user connects the three-phase five-wire power supply to the electric control box in the house, the fluctuation of the power supply does not exceed ±10%, and the ambient temperature of the electrical equipment is -10°C to 40°C.

(3) Feeding of growing and finishing pigs

Growing and finishing pigs refer to the stage from nursery to market, and the age is generally 3 months to 6 months.

1. Spring and Autumn

The temperature is suitable for the growth needs of the pigs, and the management should be well ventilated to maintain the freshness of the air in the house and reduce the stimulation of the temperature difference between day and night to the pigs. Actual practice: (1) Do not use the hanging curtains on both sides, unless the temperature is lower than 10 degrees; (2) Open the ventilation window at the top; (3) When the daytime temperature is greater than 20 degrees, you can use the opening size of the plastic film on both sides to adjust, The plastic films on both sides can be closed when the night temperature (less than 10 degrees) is low.

2. Summer

In summer, the temperature is high, and ventilation and cooling work must be done well. Actual method: (1) Do not use the hanging curtains on both sides; (2) Open the ventilation window on the top; (3) Open the plastic film roller blinds on both sides; (4) When the temperature is higher than 35 degrees at noon, put down the curtains on both sides Plastic film roller blinds, close the ventilation window at the top, and turn on the fan and wet curtain system to cool down.

3. Winter

The temperature is low in winter, so attention should be paid to heat preservation and ventilation. Actual practice: (1) The curtains on both sides should be hung; (2) The ventilation window on the top can be partially opened, mainly for ventilation; (3) The curtains on the south side can be adjusted according to the temperature, and the temperature on sunny days is higher than It can be removed at 10 degrees, and the plastic film roller blind on the south side can also be opened slightly to allow ventilation and sunlight to enter the house.

Claims (2)

1. raise the method for growing-finishing pig with movable hog house, it is characterized in that:

(1) movable hog house booth design:

Movable hog house booth is made up of galvanized pipe pig house greenhouse frame (1) and cladding material; Top portion ventilation window (5) adopts dislocation ventilation and lighting structure, height 0.6m, and adopt roller shutter to ventilate, ventilation film is 8 films, can ventilate and daylighting;

The manual volume film vent window (6) of band self-locking device is established in both sides, front and back, volume film height about 1 meter, manually volume film vent window (6) width is pig house length, and volume film thickness is 15 filament length longevity films, withhold with film pressing rope between upper film rear arched tube, volume film height can be regulated according to temperature;

Before and after both sides separately add curtain (7), in order to winter or temperature low time use;

Top cover material by outer plastic foil (2), Intermediate Gray heat-preservation cotton 3-5cm (3), interior plastic foil (4) form;

Both sides cladding material adopts the long-lived film of domestic individual layer to cover;

Pig house two ends respectively establish single open-door (8) 2 to overlap, and blower fan (9) is installed in one end, and the other end is installed wet curtain (10) or installed blower fan (9);

(2) growing and fattening pig feeding method:

Growing-finishing pig refers to that the age was generally 3 monthly ages at monthly age to 6 to the listing stage after child care;

Spring and autumn: 1) temperature is lower than the curtain (7) using both sides when 10 degree; 2) open top part vent window; 3) when daytime temperature is greater than 20 degree, the manual volume film vent window (6) of opening both sides carrys out climate comfort, and night, temperature was lower than the manual volume film vent window (6) of closing both sides when 10 degree;

Summer: 1) without the curtain (7) of both sides; 2) open top part vent window (5); 3) the manual volume film vent window (6) of both sides is opened; 4), when noon, temperature was greater than 35 degree, put down the manual volume film vent window of both sides, shut top portion ventilation window (5), open belt blower fan system (9) and wet curtain system (10) are lowered the temperature;

Winter: the curtain (7) 1) using both sides; 2) top portion ventilation window (5) part is opened, and is used for taking a breath; 3) curtain (7) in southern side takes off when fine day temperature is greater than 10 degree, and the manual volume film vent window (6) in southern side is opened slightly, so that ventilation and sunlight enter in house.

2. raise the method for growing-finishing pig according to claim 1 with movable hog house, it is characterized in that:

Described pig house booth specification: wide 10.5 meters, span 0.8 meter, shoulder height 1.9 to 2.2 meters, rise 5.0 meters, length can be according to actual needs;

Described pig house greenhouse arching pipe, cable-stayed support adopt the galvanizing pipe of φ 32X2, and middle standing pillar is the galvanizing square tube of 60X60X2, and top longitudiual truss is 50X30X2 galvanized pipe, and the galvanizing pipe that trombone slide all adopts φ 25X1.5 is indulged in road, side two;

Adopt the zinc-plated draw-in groove of greenhouse special hot, draw-in groove thickness 0.7 millimeter, is arranged in booth two side, road, every side 2, plastic card silk fixed film; Connector all adopts zinc-plated process; Booth frame directly inserts underground, need not make basis, and pile is 20cmX20cmX40cm concrete column, interval 160cm;

Every pig house booth establishes single open-door (8) 4 to overlap, and it is high that door is of a size of 0.9m wide * 1.8m, and be positioned at pig house booth two ends and keep to the side, doorframe is galvanized pipe, covering 15 filament length longevity film on door;

Curtain (7) by outer plastic foil (2), Intermediate Gray heat-preservation cotton 3-5cm (3), interior plastic foil (4) form, the same top cover material of structure; High 1.2 meters, adopt rope to be connected directly between before and after pig house booth on two side shelf steel pipes hooks;

Every pig house booth arranges 2 circulation fans, is arranged on pig house one end, and the other end is installed wet curtain or installed 2 circulation fans, and other end blower fan is staggered to blowing, circulation fan air quantity: 4000m ³/ h, total head: 149Pa, power: 120W.