Mobile pig farming system and method for pig production

Abstract

The invention relates to a mobile pig farming system comprising a plurality of movable stables (Figs. 1-3) that each comprise side boundaries and one or more resting areas (4) for a number of pigs / sows, and equipped with devices (14, 15, 16, 17) for storage and distribution of feed and water to the animals, wherein the pigs / sows that are part of the system are fitted with electronic ear tags, for instance comprising RFID technology, to ensure access control, location tracking, feed delivery control, etc., and comprising a field, primarily planted with row crops, over which the stables (Fig. 1–3) can move, at least one outdoor pen (2) per stable defining a feeding area on the field and including access devices (6) that allow the animals to move from the resting areas to the fenced area of the field, wherein the mobile stables (Fig. 1–3) are self-propelled, and the system includes three mobile stables (Fig. 1–3), namely a gestation stable (Fig. 1), a farrowing stable (Fig. 2), and a weaner / finishing stable (Fig. 3), and wherein the stables (Fig. 1–3) include connection devices so that sows can be moved from the gestation stable (Fig. 1) to the farrowing stable (Fig. 2), and piglets - preferably together with the sows - can be moved from the farrowing stable (Fig. 2) to the weaner / finishing stable (Fig. 3), and the sow can be moved back to the gestation stable (Fig. 1) after the piglets are weaned. The invention also relates to a method for pig production.

Description

[0001] MOBILE PIG FARMING SYSTEM AND METHOD FOR PIG PRODUCTION

[0002] The present invention relates to a mobile pig farming system comprising a plurality of movable stables that each comprise side boundaries and one or more resting areas for a number of pigs / sows, and equipped with devices for storage and distribution of feed and water to the animals, wherein the pigs / sows that are part of the system are fitted with electronic ear tags, for instance comprising RFID technology, to ensure access control, location tracking, feed delivery control, etc., and comprising a field, primarily planted with row crops, over which the stables can move, at least one outdoor pen per stable defining a feeding area on the field and including access devices that allow the animals to move from the resting areas to the fenced area of the field, wherein the mobile stables are self-propelled, and the system includes three mobile stables, namely a gestation stable, a farrowing stable, and a weaner / finishing stable, and wherein the stables include connection devices so that sows can be moved from the gestation stable to the farrowing stable, and piglets - preferably together with the sows - can be moved from the farrowing stable to the weaner / finishing stable, and the sow can be moved back to the gestation stable after the piglets are weaned.

[0003] Background of the invention

[0004] Traditionally, pig production has been a mass production process, in which the pigs are kept in large stables and are bred in a way that is not natural. This can lead to stress diseases and behavioral problems such as aggression, apathy, tail biting and frustration.

[0005] Furthermore, mass production of pigs in pig farming systems with high odor load from for instance ammonia can lead to a bad work environment for the personnel that work with the pigs. With free range pigs the personnel will get the opportunity of working in a more natural environment, which can lead to a better work situation.

[0006] In addition, consumer demand for sustainable production and organic products has led to an increasing interest in more humane and natural methods for pig production without the use of medication, and also with less environmentally harmful methods for feed production. Free range pigs can have an extremely positive effect on biodiversity. The soil and the many organisms that live in the soil provide us with food, biomass, fibres and raw materials and regulate the water, carbon, and nutrient cycles, and are, generally, a prerequisite for life on land. The soil hosts more that 25 % of all biodiversity on the planet. Free range pigs can help to sustain a healthy ecosystem, for example, by helping to spread seeds and fertilize the soil.

[0007] In traditional farming for concentrated feed production, the soil is not regenerated, and the humus content in the soil decreases. By integrating free-range pigs into a natural symbiosis between plants and soil, this humus buildup can be restored. Humus contains approximately 58-60% carbon. An increase in the humus content of the soil contributes significantly to reducing the CO2climate impact.

[0008] Resource and environmental burdens can be significantly minimized by allowing pigs to obtain a relatively large portion of their feed directly from the field. This reduces the resources needed for concentrated feed production. Due to the natural fertilization of the field, the need for synthetic fertilizer disappears, which further reduces the general resource requirement. Natural manure on the field also has the advantage, compared to slurry from conventional pig farming systems, of significantly reducing emissions of ammonia, nitrous oxide, and methane. These greenhouse gases are responsible for a significant portion of agriculture’s climate impact.

[0009] Prior Art

[0010] Examples of patent documents containing relevant prior art are listed below:

[0011] WO 99 / 44414 A2 (KRISTOFFER LARSEN HOLDING APS), 09 / 10 / 1999 describes a mobile pig farming system comprising several movable units, which may be in the form of for example a shed, a farrowing hut, a family shed, and / or a feeding shed. The stables / sheds include side barriers / walls, bedding areas with straw, access devices / doors, and possibly feed and water devices. The system also includes a field, which can be divided into a stable / shed area and an outdoor pen / field. The stables / sheds are mobile / movable, as they may be equipped with, for example, wheels so they can be moved across a field by a vehicle. The system can include a gestation hut, a farrowing hut / shed, and a weaner / fattening hut. Sows are moved from the gestation hut to the farrowing hut approximately 7 days before expected farrowing. Later, the sows with piglets can be moved from the farrowing hut to family sheds. After weaning, the sows are moved to stables designated for sows and later moved back to a gestation hut when pregnant again. The sows / pigs may be fitted with electronic ear tags, and the system may also include additional monitoring equipment. The pig farming system may also include ventilation for the stables / sheds. The farrowing shed may include heat lamps for the piglets, and a feeding shed may have one-way doors, ensuring pigs can’t exit through the entrance but must use another door.

[0012] Mobile self-propelled stables are known from, e.g., US 2021 / 0400908 A1 (ZACHARY JOHN SMITH et al.), 12 / 30 / 2021 , where a drive system for the mobile stable may include electric motors, solar panels, and an energy storage system. Furthermore, such a stable may include an understructure with a chassis / frame and expansion units, such as a hydraulic cylinder, which can raise and lower the wheels of the stable and thereby the chassis / frame. Additionally, two outdoor pens / enclosures may be lifted from the ground along with the mobile stable. This is done by connecting the rear ends of the side fences to a front end of the frame so the front fences and side fences of the front pen are lifted from the ground with the frame. For the rear pen, the front ends of the side fences are connected to the rear end of the frame to allow lifting of the front ends of the side fences. This enables moving both the rear and front pens with the mobile stable.

[0013] From, among others, CN 118177098 A (CHONGQING HAILIN PIG DEV. CO. LTD.), 06 / 14 / 2024, it is known to use ear tags and other monitoring equipment that include RFID and Bluetooth technology, and to utilize data for monitoring and managing livestock and transmitting data to the internet.

[0014] In EP 3248458 A1 (PURPLE FARM IVS), 11 / 29 / 2017, it is described that when a mobile pig farming system moves across a field, sowing or planting can be carried out simultaneously, as a seeder can be attached to two fence elements at the rear of the enclosure.

[0015] The aforementioned patent documents describe elements that are also part of the present invention, but they lack the regenerative aspect, in which the soil is improved through enhancement of soil structure, increased humus content, and reduced nutrient leaching, while also achieving improved animal welfare.

[0016] Object of the Invention

[0017] The object of the invention is to provide an integrated, self-propelled pig farming system in which the entire pig lifecycle - gestation, farrowing, and fattening - is carried out in one self-driving system that moves daily over the field. The GNSS-controlled stable and paddock modules move in small increments, ensuring pigs always have access to fresh, protein-rich leafy vegetation, while the vacated soil recovers under permanent plant cover. This eliminates the need for stationary stable buildings, slurry tanks, synthetic fertilizers, pesticides, and transportation between separate production units. All biomass remains within the local field cycle as fertilizer and humus.

[0018] By replacing up to 70% of conventional concentrated feed with self-harvested leafy biomass, eliminating liquid manure storage, and powering the system’s electric consumption with onboard renewable energy, the climate footprint is reduced from approx. 3.5 kg to 0.6-0.8 kg CO2equivalent per kg of meat, and both methane and nitrous oxide emissions are significantly reduced. An annual biomass production of IQ- 15 tons dry matter per hectare contributes, according to the 2019 update to the IPCC guidelines, 4.5-6.8 tons of carbon per hectare; without plowing, 40-60 % of this is stabilized, equivalent to approx. 2-3 tons C per hectare per year or 7-11 tons CO2equivalent per hectare per year, consistent with measured field data from the system according to the invention.

[0019] Feeding is based on a multi-species leafy crop mix comprising at least three species selected from alfalfa, white or red clover, sainfoin, leaf rape, forage kale, phacelia, chicory, amaranth, and leafy fodder kale; in juvenile growth stages, the leaves contain at least 20 % crude protein and at most 18 % NDF (Neutral Detergent Fibre). A 100 kg pig is provided daily with 10-15 m2fresh crop and consumes 8-11 kg fresh biomass (1 .6-2.0 kg dry matter), corresponding to 240-320 g crude protein and 1 .4-1 .8 feed units for pigs, thus meeting energy and amino acid needs without high-starch feed or antibiotics, while also reducing water requirements due to the high water content in the leafy mass. As urine and feces are deposited pointwise in the root zone, slurry management, chemical fertilizer, and pesticides are avoided. The daily rotation and a rest period of at least 30 days per field section keep reactive nitrogen leaching below 20 kg N per hectare per year. Pigs are kept in a single closed group on fresh soil, making tail docking unnecessary, and tail biting is observed in less than 1 % of animals. Daily movement breaks infection chains, reduces common digestive, respiratory, and skin diseases, and allows for at least a 90 % reduction in antibiotic use.

[0020] Economically, the concept reduces production costs by more than 25 % compared to existing free-range and organic systems, while the sales price is expected to be about 30 % above conventional and about 25 % below organic pork. The documented net storage of 7-11 tons CO2equivalent per hectare per year also gives the producer a new income stream via tradable carbon credits.

[0021] The invention thus supports the Ell’s Farm to Fork strategy, Soil Mission, and Nitrates Directive by delivering a low-CO2, synthetic fertilizer-free, and regenerative livestock model. The system’s ongoing GNSS, NDVI, soil, and animal sensor data enables ESG- compliant reporting under the Corporate Sustainability Reporting Directive, strengthening the farmer’s access to green financing and sustainable credit schemes.

[0022] Summary of the invention

[0023] The present invention relates to a mobile pig farming system comprising a plurality of movable stables that each comprise side boundaries and one or more resting areas for a number of pigs / sows, and equipped with devices for storage and distribution of feed and water to the animals, wherein the pigs / sows that are part of the system are fitted with electronic ear tags, for instance comprising RFID technology, to ensure access control, location tracking, feed delivery control, etc., and comprising a field, primarily planted with row crops, over which the stables can move, at least one outdoor pen per stable defining a feeding area on the field and including access devices that allow the animals to move from the resting areas to the fenced area of the field, wherein the mobile stables are self-propelled, and the system includes three mobile stables, namely a gestation stable, a farrowing stable, and a weaner / finishing stable, and wherein the stables include connection devices so that sows can be moved from the gestation stable to the farrowing stable, and piglets - preferably together with the sows - can be moved from the farrowing stable to the weaner / finishing stable, and the sow can be moved back to the gestation stable after the piglets are weaned. According to invention the mobile pig farming system is characterized in, that it comprises further surveillance equipment, and the system comprises means for transferring of information from the electronic eartags and from further surveillance equipment to achieve real time surveillance and storage of data on each animal, and that the crop in the field is also surveilled and controlled by means of registered data about plant growth, feed intake of the pigs, the condition of the plants (trampled, bitten) the regeneration time of the plants, meteorological data, the moisture content of the soil, etc.

[0024] In addition to the fact that the described mobile pig farming system can optimize the quality, flavour, and texture of pork for production purposes and can function as a fully operational pig housing system that supports the animals’ primary natural needs and instincts - thus providing the animals with natural surroundings that support their innate behavior by offering a natural foraging environment - monitoring and recording of data on both animals and plants also enable the optimization of the system’s regenerative effect. Through the present invention, it is therefore possible to improve the soil’s humus content and structure, so that over time a more resilient and productive system is established, including better water retention, which potentially improves yields and also leads to reduced nutrient leaching, while simultaneously increasing the soil’s carbon content.

[0025] According to a preferred embodiment of the invention, the system comprises means for transferring information so that data can be transferred to the internet / a cloud unit and be computed with artificial intelligence to provide a self-learning system for optimum control of the systems.

[0026] In this way, data from each individual production system can be collected and processed, and it is also possible for data from multiple systems to be transferred to the internet / a cloud device and processed using artificial intelligence in order to deliver a self-learning system for the optimal management of the systems.

[0027] In a preferred embodiment the electronic eartags comprise Bluetooth-technology. This enables location control of the pigs.

[0028] Preferably, the stable units comprise a substructure with an undercarriage that enables them to be moved across a field, and each stable is equipped with propulsion means such as electric, hydraulic, or electric / hydraulic devices to ensure that the stables are self-propelled, and the stables are also equipped with walls and a roof structure and include devices for the storage and distribution of feed and water to the animals and are connected to an outdoor pen, and wherein a resting area is provided with a solid floor on at least part of the floor surface.

[0029] This provides for a well-functioning stable unit with a building envelope and easy access to water and feed, where the pigs can find rest.

[0030] According to the preferred embodiment of the invention the outdoor pen can be lifted by means of lifting equipment.

[0031] In this way, it is possible to move the outdoor pen across a part of the field with tall crops without damaging the crops.

[0032] It is especially advantageous if a bottom frame of the stable is supported by a hydraulic construction that is connected to the undercarriage via a central ball joint.

[0033] When using electric or hydraulic rams in two adjacent comers or all four comers, the upper part of the unit can be controlled to be horizontal at any position of the tracks.

[0034] In a embodiment of the invention each of the stables comprises walls, a roof construction, floors, and partition walls, wherein the stables are modular, meaning that they are build by means of modules that are provided with coupling means so that they can easily be assembled, taken apart, and transported for rebuild or renovation / changing of parts.

[0035] In this way, a practical and cheap construction with a high degree of standardization is achieved.

[0036] According to an advantageous mobile pig farming system according to the invention, the stable units are provided with permanently mounted shade netting and means for water and energy collection and storage. In this way it is ensured that the pigs in the system are protected against too much sunlight and the need for addition of external water and energy is reduced or in the best case removed.

[0037] It is also advantageous if the stable units are provided with a climate control system, such as an electrically powered heat pump with one or more blowers that can provide for correct temperature and humidity in the resting areas.

[0038] In a preferred embodiment the gestation stable comprises a pen area for sows, a feed dispenser, a boar pen, and a sick and sorting pen.

[0039] These features will provide for an optimal functioning of the gestation stable.

[0040] In one preferred embodiment of the farrowing stable, it comprises 16 to 20 separate pens that are provided with piglet nests which are, preferably, heated by means of heat lamps and / or heat mats, and which has a solid floor and bedding of for instance straw, where access to the pens is via a controlled access door so that only a certain sow can enter the pen, from a walkway with slats that end in a ramp, which gives the sows and the piglets access to the outside pen.

[0041] This will ensure a good functioning of the farrowing stable.

[0042] According to the invention, the finishing stable, advantageously, comprises common living areas for sows and piglets and different feed dispensers for sows and piglets.

[0043] This is done to avoid that the sows can gain access to the feed of the piglets.

[0044] In a preferred embodiment of the invention, the system comprises automatic seed spreaders, for example mounted on the outdoor pen, where the seed spreaders automatically distribute seeds as the stable moves across the field, so that the seeds can be trampled into the soil by the pigs, where the seed spreaders are filled with a seed mixture adapted to the season and the desired vegetation goals for the area, where each seed spreader can distribute seeds over a width of approximately 4 meters, for example, where up to five seed spreaders may be mounted on the outdoor pen, and where the electric control of the seed spreaders ensures activation and deactivation synchronized with the movement of the mobile stable and fencing system.

[0045] These features enable daily sowing of new seeds, improve soil structure and health, reduce the need for external feed supply, minimize the environmental impact of the production process, and contribute to increased carbon sequestration in the soil by introducing new seeds to the area without the use of seed drills and soil tillage, which typically lead to oxidation of biomass and carbon.

[0046] According to the invention a method for pig production is provided and it comprises the following steps: transporting gilts or sows to a gestation stable where they are brought into heat and inseminated if not already pregnant, after a period moving the gestation stable near a farrowing stable and transferring the sows to the farrowing stable for farrowing and initial piglet rearing, after a period moving the farrowing stable close to a finishing stable and transferring the sows and piglets to the finishing stable where they remain together for a period, after another period moving the finishing stable near the gestation stable and subsequently transferring are sows back to the gestation stable to repeat the process while the piglets remain in the finishing stable until they are ready for slaughter, and throughout the entire process the stables are moved across a field where the stables have automated hatches to provide the animals access from one stable to the next, with these hatches preventing the animals from moving back, and activation of the automated hatches is controlled by signals from electronic ear tags placed on the animals. The method for pig production is characterized in that the crops in the field are also surveilled and controlled by means of registered data for plant growth, feed intake of the pigs, the condition of the plants (trampled, bitten) the regeneration time of the plants, meteorological data, the moisture content of the soil, etc.

[0047] In this way, it is ensured that, in addition to a smooth pig production process that extensively takes the animals’ natural needs into account, a regenerative effect can be achieved in the soil of the field where the method according to the invention is carried out. The regenerative effect includes, among other things, improved carbon sequestration (both in the soil and through the buildup of plant biomass), improved soil structure (partly due to year-round plant cover and increased microbiological activity), and enhanced water retention.

[0048] It is especially advantageous that the method comprises transmission of information so that data can be transferred to the internet / a cloud unit and be processed with artificial intelligence to deliver a self-teaching system for optimal control of the systems.

[0049] This will ensure a precise management of the systems with the lowest possible costs.

[0050] Preferably, the eartags further comprise a Bluetooth-unit that is used for location control so that it easy to detect if all animals are moved to the next platform or not.

[0051] According the a preferred embodiment the sows stay at the piglets in the finishing stable for approximately 3 weeks for gradual weaning of the piglets.

[0052] In this way, the welfare of sow and pigs will be enhanced, and problems with weaning such as especially diarrhea can largely be avoided. Hence, the sows are with the piglets in the farrowing stable for 4-5 weeks and in the finishing stable for approximately 3 weeks, giving a total weaning period of 7-8 weeks.

[0053] In the preferred embodiment the field is planted with row crops, and the pigs intake a significant part of their nutrition needs from the field while they, simultaneously, fertilize the field and perform a tillage of the soil.

[0054] In this way, a partial feeding of the pigs can be achieved that is simple and inexpensive, where the pigs’ natural needs are largely met, and where the soil’s fertility can be built up over time. By allowing the sows and pigs to forage directly from the fields and supplementing their diet with tailored concentrated feed, the system achieves a significant reduction in the need for compound feed. This approach ensures that the sows and pigs receive nutrition that is healthy, natural, and economically sustainable. To further optimize the use of concentrated feed and reduce dependence on it, the system is designed to ensure that the animals can obtain a large portion of their nutrition directly from the field, which means that the amount of purchased feed can be significantly reduced. In this way large amounts of carbon can be stored in the upper soil layers, nutrients can be retained and the soil fertility - and the expected outcome - can be increased considerably benefitting the environment, the climate, and the farmers' economy.

[0055] In accordance with the method according to the invention it is further advantageously if automated seed spreaders for instance are mounted on the mobile pen, where the seed spreaders automatically distribute seeds as the stable moves across the field, so that the seeds can be trampled into the soil by the pigs, and the seed spreaders are filled with a seed mixture adapted to the season and the desired vegetation goals for the area, and each seed spreader can distribute seeds over a width of approximately 4 meters, for example, where up to five seed spreaders may be mounted on the outdoor pen, and where the electric control of the seed spreaders ensures activation and deactivation synchronized with the movement of the mobile stable and fencing system.

[0056] The implementation of automatic seed spreaders in the mobile system is crucial for maintaining a sustainable and regenerative agricultural practice. By enabling the daily sowing of new seeds, the soil structure and health are significantly improved, while continuously ensuring a natural feed base for the pigs. This function reduces the need for external feed supply and minimizes the environmental impact of the production process.

[0057] In addition, the system contributes to increased carbon sequestration in the soil by adding new seeds to the area without the use of seed drills and soil cultivation. In conventional seed sowing, the soil surface is tilled, which typically leads to the oxidation of biomass and carbon when exposed to oxygen and sunlight. The present concept ensures the buildup of healthy biomass, humus, and carbon storage in the soil, further supporting a sustainable and regenerative farming practice.

[0058] More specifically, the method according to the invention employs sustainable cultivation methods that create a symbiotic relationship between animal husbandry and crop production, resulting in the efficient use of agricultural land. The system ensures that both plants and animals contribute to mutual benefit and sustainability. Biodiversity is significantly increased by replacing monoculture cereal production with a mix of forage crops such as clover grass, herbs, alfalfa, and Jerusalem artichokes, creating a more natural and diversified environment that strengthens ecosystem health and resilience. The integration of crops grown together in strips of annual and perennial plants, along with the daily movement of animals across the fields, contribute positively to the microbial health of the soil. The animals’ natural behavior, such as fertilizing and rooting in the soil, promotes the activity and diversity of microorganisms, thereby improving soil fertility and nutrient cycling. At the same time, the system addresses the problem of nutrient leaching, often seen in traditional pig production, by integrating the animals into field management, improving nutrient utilization and minimizing the need for external fertilizers. This reduces the risk of nutrient leaching and environmental pollution. The system also contributes to carbon sequestration in the soil - a key factor in its sustainability. By creating a balance between livestock and crop management, relatively high humus buildup is expected, helping to bind carbon in the soil and reduce climate impact. This is supported by a greater share of perennial crops and improved soil water retention capacity, which is particularly important in light of climate change and more frequent extreme weather events such as cloudbursts. Overall, the system promotes more sustainable and environmentally friendly production. By optimizing the use of agricultural land and integrating livestock directly into crop management, a farming system is created that not only supports animal welfare and productivity but also contributes positively to the environment and climate.

[0059] Brief description of the drawings

[0060] The invention will be further explained in the following with reference to the drawings, in which:

[0061] Fig. 1 shows a gestation stable and an outdoor enclosure / pen, viewed from above; Fig. 2 shows a farrowing stable with an outdoor enclosure / pen, viewed from above; Fig. 3 shows a finishing stable with an outdoor enclosure / pen, viewed from above; Fig. 4 shows the kinematics of the drive wheels in the outdoor pen, with the drive wheels shown in lowered and raised positions;

[0062] Fig. 5 shows the kinematics of an undercarriage beneath the stable in lowered and raised positions, and also shows the angle of the undercarriage;

[0063] Fig. 6 shows a seed spreader mounted on the outdoor pen in a raised position;

[0064] Fig. 7 shows a top view of the connection between the gestation stable (Fig. 1 ) and the farrowing stable (Fig. 2), showing multiple combinations;

[0065] Fig. 8 shows a top view of the connection between the farrowing stable (Fig. 2) and the finishing stable (Fig. 3), with multiple combinations shown; Fig. 9 shows a top view of the connection between the finishing stable (Fig. 3) and the gestation stable (Fig. 1 ), with multiple combinations shown; and

[0066] Fig. 10 shows a schematic overview of how the control system communicates with various components for process control and data management.

[0067] Detailed description of the drawings

[0068] Reference is now made to Figs. 1-3, which show a mobile pig farming system comprising three movable stables 1 , each constructed or configured as houses resembling conventional pig farming systems with one or more bedding areas 4 for a number of pigs or sows. Each stable is equipped with a feed dispenser 14 for storing and distributing feed and water to the animals, and an outdoor pen 2, which defines a field area preferably planted with row crops. The mobile stables in Figs. 1-3 can move across this area. The row crops function as a feeding area on the field. Ramps 6 allow the animals to move from the bedding areas 4 to the outdoor pen 2, and the mobile stables are self-propelled.

[0069] The three mobile stables consist of a gestation stable, a farrowing stable, and a finishing stable. The stables 1 include means for interconnection so that sows can be moved from the gestation stable to the farrowing stable, and the piglets, preferably with the sow, can be moved from the farrowing stable to the finishing stable. After weaning, the sow can be moved back to the gestation stable. Pigs and sows are equipped with electronic ear tags to enable access control, location tracking, feed delivery control, etc. Generally, there are three possible combinations of stable interconnection. According to Fig. 7, pregnant sows can be moved from the delivery ramp 5 in the gestation stable through side walls into the outdoor pen 2 and 23. The same principle applies to transferring animals from the farrowing stable to the finishing stable (Fig. 8) or from the finishing stable to the gestation stable (Fig. 9). The connection between the various stables and / or outdoor pens can be established in different ways. However, staff must be present during the actual transfer to ensure that animals are correctly moved to the appropriate pig farming unit.

[0070] In general, the stables 1 are built on a steel frame with a solid floor in the bedding area

[0071] 4. Beneath the steel frames, an undercarriage 21 is positioned to propel the stables, and stabilizers 20 allow them to be raised to the desired position. The stables are equipped with personnel entry doors and windows for natural light. The exterior cladding consists of panels that can withstand normal weather conditions. The stables 1 have a roof structure 3, preferably covered with solar panels, which largely function as the outer roof. Insulation is provided beneath the bedding areas 4, in the outer walls, and under the roof structure 3, enabling a comfortable indoor climate without the need for heating in winter or cooling in summer. The stables have ventilation systems that provide additional air exchange beyond natural ventilation via entrance gates and vents. Fresh air is drawn in at the end of the stables and distributed via a duct system with outlet bags mounted under the ceiling. Air velocity is kept low enough to avoid drafts that could discomfort the animals. Interior partitions use standard equipment systems with galvanized steel brackets and plastic panels, including gates 10 for sorting animals.

[0072] As for the outdoor pens 2, the animals access them via the ramp 6 from the stable. The ramp 6 consists of side panels and a cross-frame structure that stabilizes the pen itself. Like the stable, the outdoor pen can be raised during transport. When lowered, the pen prevents animals from escaping. To prevent predators from entering, the pen is surrounded by a 10 kV electric fence 24. Fence wires are placed at multiple levels to prevent predators from climbing the side panels. The outdoor pen is equipped with both daylight and infrared cameras. These camera systems can be used, among other things, to document animal welfare and preferred positions within the pen.

[0073] Since the bedding areas 4 are used solely for animal rest, their size can be minimized compared to traditional systems, as the outdoor pen 2 and walkways 8 count towards the total area per animal. In this embodiment, the following areas are available: Sows in the gestation stable have approximately 2.5 m2each, sows in the farrowing stable have a total pen area of approximately 4 m2, of which 2.4 m2is for piglets, and finishing pigs up to 110 kg in the finishing stable have a bedding area of approximately 0.55 m2per pig. The flooring is made of waterproof and non-slip plastic or rubber material with underlying wooden panels. It is watertight, so manure and urine cannot damage the floor structure.

[0074] A walkway 8 is used in all stables 1 to guide animals from the outdoor pen 2 into the bedding area 4. The walkway 8 has plastic slats throughout, allowing direct access to the ground below for manure and urine. It also serves to clean the animals’ hooves before they enter the bedding area. The walkway is covered by a roof 3 and side walls for shelter and shade. Feed dispensers 14 are placed in the walkway in both the gestation and finishing stables, reducing contamination in the bedding areas.

[0075] A delivery ramp 5 is used to transfer animals from one stable to another or to load individual animals for transport. The farrowing stable has two delivery ramps; the gestation and finishing stables each have one. The ramp can be hydraulically raised or lowered via a hydraulic cylinder, raised during stable movement, and lowered when animals are being transferred. The delivery ramp is a galvanized steel structure with non-slip plastic slats on the floor. Side panels prevent animals from falling during transfer.

[0076] The ramp 6 to the outdoor pen 2 is used to move animals from the outdoor pen to the walkway 8 inside the stable. A separate ramp exists for the boar in the gestation stable. The gestation and farrowing stables have two ramps; the finishing stable has one. These ramps can be hydraulically raised and lowered via a cylinder, staying raised during transport and lowered when animals need access to the outdoor pen. The ramps in the gestation and farrowing stables are equipped with hydraulically operated gates that open only when an animal’s ear tag grants access. This ensures that boars and / or sows in the gestation stable do not access the wrong bedding area 4). In the farrowing stable, the hydraulic gates ensure that sows access the correct walkway 8). The ramp is a galvanized steel structure with non-slip plastic slats on the floor. Side panels prevent animals from falling off. Additionally, the ramp is covered by a roof structure to keep the plastic slats dry and free of ice in winter, reducing the risk of leg injuries.

[0077] The roof structure 3 is constructed with wooden rafters and exterior cladding of solar panels, which serve both as outer roof covering and energy supply for the stable. Inside, the ceiling is clad with easy-to-clean panels and insulated to withstand both heat and cold. The roof is fitted with gutters to collect rainwater, which is used as a supplemental water source in the stable.

[0078] A boar pen 11 is arranged so that the boar has contact with sows during feeding at a feed dispenser 14. This ensures that sows are more likely to come into heat. The boar pen is equipped with the feed dispenser 14 and a gate into the pen. The boar pen measures approximately 7 m2, allowing natural mating of a sow inside the pen.

[0079] Additionally, the boar has access to a separate ramp so it can enter the outdoor pen 2.

[0080] A piglet nest 12 is arranged so that the sow cannot lie on the piglets. The nest is covered with a hinged lid, allowing staff access to individual piglets. A heat lamp can be installed inside the nest. A feed trough is placed within the enclosure so that the sow does not have access to this feed. The area of the nest is approximately 2.4 m2, providing adequate resting space for piglets up to 4 weeks old.

[0081] A sick and sorting pen 7 is arranged so that animals deviating from expected growth curves, etc., can be separated from the herd. This allows for veterinarian visits or staff access to the animal. Furthermore, sick animals must always be able to be isolated from the herd. The separation process usually occurs via the sorting scale 13), but animals may also be manually moved to the sick and sorting pen by staff. The pen is connected to an additional pen, which can be used to sort more animals for delivery to slaughter or relocation to another mobile stable. A water valve is accessible in this pen, while feeding is performed manually.

[0082] A sorting scale 13 is arranged so that all animals from the outdoor pen 2 must pass through it when entering the stable. This ensures that each animal is weighed, and data is recorded. These records are matched with the individual animal's process data, and the animal can be automatically separated into the sick and sorting pen 7 if needed. Next to the sorting scale are one-way gates bars (that flip upwards) giving animals direct access to the ramp leading into the outdoor pen. Right after sows and piglets are moved to the finishing stable, the one-way gates and sorting scale are typically left open for a while until the animals are accustomed to the new environment.

[0083] All stables 1 are equipped with feeding systems 15 for concentrated feed and water. The feed dispensers 14 record the amount of feed and water allocated to each animal based on predetermined feeding curves. Data linking between the dispenser and each animal is managed via ear tags. In the gestation stable, about five feed dispensers / booths are arranged, which can be locked behind the sow by staff. This ensures the sow remains in the booth, allowing it to be used for artificial insemination while the sow is fixed and has contact with a boar. In the farrowing stable, each farrowing pen has its own feed dispenser. Next to the feed dispenser, piglets have access to a water valve. In the finishing stable, around sixteen feed dispensers / booths are installed. These booths can be divided between weaned piglets and lactating sows in the early weaning period (feed mixes differ for sows and weaners). This allows weaned piglets natural access to the feed dispensers. Once the sows are removed, all dispensers are open to the weaned pigs / fattening pigs.

[0084] All stables are fitted with gates 10 in the walkway area 8. These gates can be used to open and close for animal movement in and out, and to isolate individual animals for special treatment.

[0085] Each stable 1 has storage space for straw 18 or similar material. Whole straw bales or chopped straw can be stored in a silo setup. The straw is used as bedding and helps absorb moisture while contributing to animal welfare.

[0086] The stables are equipped with water tanks 17, ranging from 1 ,500 to 3,500 liters depending on the type of pig production system. A pump in the tank supplies all drinking valves inside and outside the stable with fresh water through a pipeline system. The tank also supplies exterior sprinklers in the outdoor pen 2 for cooling the animals during high outdoor temperatures. The tank is made of plastic that is resistant to sunlight. Water is supplied to the tank either externally (usually from a tanker) or collected from rainwater via the roof. The tank includes a filter and UV system for purifying drinking water. The tank and pipe system are equipped with electric heating to keep the water frost-free in winter, even when no animals are present in the stable.

[0087] Each stable 1 is fitted with a technical unit 19. These units differ according to the energy and control needs of the specific stable. The technical unit 19 includes a backup battery, an inverter, a diesel generator, a hydraulic pump station, and a control and monitoring system. The backup battery stores solar power from roof-mounted solar panels 16. Storage capacity ranges from 10 kWh to a maximum of 30 kWh depending on the stable type. The inverter converts DC electricity from the panels into 220 V AC for general use in the stable, and it also converts AC to 24 V DC for control power. The diesel generator starts if the solar panels cannot supply enough power, typically in overcast or cold winter conditions. The generator produces 220 V and delivers about 5- 8 kW, with a diesel tank of about 100 liters. The hydraulic pump station provides hydraulic pressure to power all hydraulic functions in the stable and outdoor pen 2. Pressure can be adjusted depending on the function: typically 10-20 bar for gate cylinders and 150-250 bar for undercarriages 21 and stabilizers 20. The station includes multiple constant pumps powered by variable-speed electric motors for efficiency. The control and monitoring system (Fig. 10) oversees all stable operations and animal needs.

[0088] Multiple control units (Fig. 10) manage GPS positioning, propulsion, feed delivery, water supply, energy supply, hydraulic operations, and data collection, ensuring complete control over the mobile stable systems.

[0089] Each stable is fitted with a feed silo 16 for concentrated feed. The silo size varies with the stable type and typically ranges from 2.5 to 4.5 tons. The finishing stable silo can differentiate feed types to meet the needs of both weaned piglets and lactating sows, as well as later-stage fattening pigs. Feed is delivered into the silo via a chute from an external feed truck. A feed system drive unit 15 is located directly beneath the feed silo.

[0090] Vertical hatches 9 are installed to separate resting areas 4 from walkway areas 8. These hatches open and close vertically and are operated by a hydraulic cylinder. A safety system ensures the hatches do not injure the animals. The hatches do not close completely but have a flexible panel at the bottom to prevent piglets from being stuck. They are activated by the animal's ear tag and a mechanical trigger, ensuring that only the assigned individual can open the hatch.

[0091] On the exterior, the stable is equipped with drinking cups 26 and a sprinkler system 25, ensuring that animals always have access to fresh water while in the outdoor pen 2. The sprinklers can cool the animals by spraying them on hot summer days, lowering their body temperature. This is especially important in fields that lack tall vegetation to provide natural shade and cooling.

[0092] At each corner of the stable is a stabilizer 20, which ensures the stable remains steady between movements. The stabilizers 20 supplement the undercarriages 21 , which provide the main support. A plate of about 0.5 to 1.0 m2is lowered to the ground for added stability. During movement, the stabilizers are hydraulically lifted and then lowered again when the stable is stationary. A tilt sensor regulates how much each stabilizer is lowered to ensure the stable remains level when at rest.

[0093] All stables 1 are equipped with four undercarriages 21 . These undercarriages use rubber tracks 38 and are hydraulically driven. Each track is powered by an independently controllable hydraulic gear motor, allowing turning and variable speed — making curved driving possible. As shown in Fig. 5, each undercarriage is mounted on a ball joint / centering link 37, providing complete freedom of movement relative to the stable. A parallel system 35 combined with a suspension 36 and a hydraulic cylinder 34 allows the stable to be lifted independently on all four undercarriages 21 . A mechanical stop in the suspension 36 ensures that no undercarriage can pivot more than 4-5° relative to the stable, preventing collisions with the stable underside.

[0094] Preferably, the mobile stables 1 operate on fields planted with row crops. A suitable track layout might include a central area planted with perennial grasses, possibly mixed with clover species, which the stable traverses. Adjacent plots may contain other perennials or high-protein annuals such as peas, buckwheat, brassicas, or Jerusalem artichokes. In an agroforestry configuration, species such as paulownia, willow, poplar, hawthorn, evergreen trees, and shrubs can serve as shelterbelts, potentially being harvested for compost or bioenergy. This approach promotes humus formation in the soil, which can be further enhanced using data collection and analysis.

[0095] To build field fertility, pigs may be fed somewhat difficult-to-digest, sprouting-capable seeds, or they may consume seed crops in the field. Many of these seeds pass undigested and are deposited in the pigs’ manure, fertilizing and providing ideal conditions for germination and growth.

[0096] The mobile stables 1 are equipped with partially covered outdoor pens 2 ranging in size from 250 m2to 600 m2, ensuring animals have access to natural foraging areas. The gestation stable is designed to house between 25 and 60 sows (including gilts and boars), the farrowing stable can accommodate 12 to 30 sows, and the finishing stable fits 100 to 250 fattening pigs. Each production unit enables efficient use of gestation, farrowing, and finishing stables in line with optimal occupancy rates. The outdoor pens 2 can be lifted approximately 1 m using support wheels 28 and multiple drive-wheel units 29. Each drive wheel 30 is powered by a hydraulic gear motor and can swing up to about 200° via a kinematic system 33, with angle controlled by a hydraulic cylinder 32. Lifting is accomplished with a telescopic mechanism 31 , fixed to the pen’s frame 22), allowing each wheel to be raised or lowered individually via hydraulic cylinder. Elevating the pen prevents damage to high-growing crops during movement. Typically, stables are moved at night when animals are inside, eliminating escape risk while the pen is raised. The control system ensures all animals are inside before lift. In low vegetation, raising may not be necessary, and movement can occur in lowered state (allowing larger animals to remain in the pen during travel).

[0097] This rotation-based method enables each unit to produce between 600 and 1 ,600 slaughter pigs per year. The modular and flexible system supports continuous, integrated operations that promote efficiency and sustainability. By optimizing stable usage and coordinating rotational stable movements across pig life stages, this full-line system ensures animal welfare and health, high production capacity, and sustainable resource utilization.

[0098] To maintain continuous vegetation and improve soil structure within the mobile pig system’s operational area, automatic seed spreaders 39 are attached to the pen 22. These spreaders enable automatic seed dispersion 41 as the unit moves across the field. The function is designed to enhance biodiversity and soil fertility by ensuring seeds are spread and trampled into the ground by the pigs, allowing new vegetation to establish quickly after grazing.

[0099] The automatic seed spreaders 39 are manually loaded into a hopper 40 with a diverse seed mix tailored to the season and vegetation goals. Each mix includes a variety of plant species to support ecosystem health and biodiversity. Electronic controls 41 activate and deactivate seed spreaders in sync with the stable’s movement. Each spreader can broadcast seed within a radius of approximately five meters. Two or three spreaders are mounted on the pen towards the direction of movement.

[0100] According to the invention, advanced technological solutions are used (Fig. 10) to monitor and control the production efficiently. Central to this system is GNSS technology (e.g. GPS) integrated into each mobile stable. The GPS enables autonomous movement based on a digital field plan, ensuring constant access to fresh foraging areas and optimal resource use. Infrared cameras analyze animal behavior and location. BioTags, Bluetooth, and RFID ear tags collect detailed data on activity, feed intake, water use, location, and access to pathways and areas within stables and pens. These data provide farmers with insight to optimize feeding and welfare. GPS systems combined with sensor data allow intelligent control of stable movement and positioning, aligning with both animal needs and field conditions, supporting sustainable land use. The integrated system also enables detailed monitoring of animal health, behavior, and welfare, allowing informed decisions that improve both productivity and animal well-being.

[0101] Control system communications (Fig. 10):

[0102] A - Central Cloud Server

[0103] B - GSM / GPS transmitter mounted on each mobile stable, exchanging signals between (A) and (C)

[0104] C - Local controller managing all information within each mobile stable

[0105] Data exchanged continuously includes:

[0106] Input 1.1 Weather / Season: date, sunlight hours, precipitation, temperature

[0107] Input 1.2 Soil conditions: soil type, humus / carbon level, pH value, minerals

[0108] Input 1.3 Position: field size, location, terrain

[0109] Input 1 .4 Plants: plant species, growth stage, biomass

[0110] Output 1.1 Nutrient / CO2: leaching, plant uptake, environmental balance

[0111] Output 1 .2 Economy: costs, income, operational data

[0112] Signal 1.1 Vegetation: sowing, plant types, humus development

[0113] Signal 2.1 Feed / Water: feed amount / type, feed and water consumption

[0114] Signal 2.2 Animal unit: number, weight, growth rate, health records Signal 2.3 Sensors: ear tags, cameras, temperature, sorting logic

[0115] Signal 2.4 stable logistics: animal movement, pig delivery, refilling feed, water, bedding

[0116] Signal 2.5 stable movement: transport, new GPS position, duration, coupling, seed spreading.

[0117] According toa central aspect of the invention, animals have daily access to a mix of annual and perennial forage crops planted in strips, covering 20-60 % of their nutritional needs depending on age. This method not only supports natural, healthy growth but also promotes biodiversity and improves soil health. Foraging behavior reduces the need for antibiotics. Each animal receives a customized concentrated feed mix based on individual nutritional needs. Electronic feed stations collect valuable data on weight, visit frequency, and feed / water consumption per animal to optimize feed delivery, minimize waste and cost, and ensure balanced diets.

[0118] The system emphasizes animal welfare through improved production methods. Animals have access to foraging areas and more space, reducing stress and aggression. This environment lessens health issues such as ulcers or tail biting commonly seen in conventional and organic pig production. It also addresses other health challenges including respiratory and digestive issues, infectious diseases, limb and hoof conditions, and reproductive problems often exacerbated by poor air quality, overcrowding, and hard surfaces in indoor housing. Eliminating transport between different environments reduces weaning diarrhea. The system keeps animals in consistent natural surroundings, supporting their general health and minimizing the need for medical interventions, including antibiotics. Overall, this approach represents a significant improvement over traditional methods by creating a more natural environment and integrating sustainable farming practices. This will ensure a higher degree of animal welfare and effectively address the health problems that are often part of conventional and organic pig production processes.

[0119] As mentioned above, this system also delivers key environmental and economic benefits. Outdoor integrated production allows significant carbon sequestration in the soil, reducing the overall climate footprint. Economically, it enables efficient operations with lower operating costs, potential for higher-quality products, and access to new markets. Its scalable design allows farmers to adapt operations to market demand, supporting a profitable business model. In summary, this full-line system combines advanced technology, sustainable agriculture, and a deep understanding of animal welfare to address current and future challenges in pig production, paving the way for a more ethical and sustainable future in pig production.

[0120] In the system, advanced production control uses real-time data from the stables to optimize operations (see Fig. 10), including feed input, water usage, stable and field position, and forage amount in outdoor pens. Algorithms analyze this data to determine when and where stables should move to maximize efficiency and sustainability. This ensures animals always have access to fresh grazing areas and optimal nutrition while promoting sustainable land use. Combining real-time analytics with intelligent planning enables dynamic operational adjustments based on changing conditions and animal needs, leading to minimal resource use and optimal animal welfare.

[0121] The mobile stables are designed to operate autonomously according to a predefined plan, enabling seamless transitions from gestation to farrowing to finishing stables. This eliminates the need for additional animal transport - a major advantage in pasture systems. Autonomous stable movement minimizes stress by keeping animals in familiar surroundings, which is critical for animal health and well-being. It also reduces manual labor related to animal movement. By automating the transition process, the system enhances operational efficiency, saves time and resources, and improves working conditions for farm staff. This approach integrates welfare and efficiency in a harmonious balance, representing a significant advancement over traditional pig production methods. List of Reference Numerals

[0122] 1 - Complete stable system (gestation, farrowing, and finishing stable / unit)

[0123] 2 - Complete outdoor pen (fenced area)

[0124] 3 - Roof structure

[0125] 4 - Resting areas

[0126] 5 - Delivery ramp

[0127] 6 - Ramp to outdoor pen

[0128] 7 - Sick and sorting pen

[0129] 8 - Walkway

[0130] 9 - Hatch

[0131] 10 - Gates for separation

[0132] 11 - Boar pen

[0133] 12 - Piglet nest

[0134] 13 - Sorting scale

[0135] 14 - Feed dispenser

[0136] 15 - Feeding system

[0137] 16 - Feed silo

[0138] 17 - Water tank

[0139] 18 - Straw storage

[0140] 19 - Technical unit

[0141] 20 - Stabilizer

[0142] 21 - Undercarriage

[0143] 22 - Frame for outdoor pen

[0144] 23 - Sidewalls for outdoor pen

[0145] 24 - Electric fence

[0146] 25 - Sprinkler system

[0147] 26 - External drinking cup

[0148] 27 - Shade net

[0149] 28 - Complete support wheel for outdoor pen

[0150] 29 - Complete drive wheel for outdoor pen

[0151] 30 - Drive wheel

[0152] 31 - Mounting for drive wheel

[0153] 32 - Cylinder for turning kinematics 33 - Kinematics for turning

[0154] 34 - Hydraulic cylinder for undercarriage

[0155] 35 - Kinematics for height adjustment

[0156] 36 - Mounting for undercarriage 37 - Centering joint for undercarriage

[0157] 38 - Track belt for undercarriage

[0158] 39 - Seed spreader

[0159] 40 - Seed hopper

[0160] 41 - Spreading disc with motor 42 - Mount for seed spreader on outdoor pen

Claims

CLAIMS1 . Mobile pig farming system comprising a plurality of movable stables (Figs. 1 -3) that each comprise side boundaries and one or more resting areas (4) for a number of pigs / sows, and equipped with devices (14, 15, 16, 17) for storage and distribution of feed and water to the animals, wherein the pigs / sows that are part of the system are fitted with electronic ear tags, for instance comprising RFID technology, to ensure access control, location tracking, feed delivery control, etc., and comprising a field, primarily planted with row crops, over which the stables (Fig. 1-3) can move, at least one outdoor pen (2) per stable defining a feeding area on the field and including access devices (6) that allow the animals to move from the resting areas to the fenced area of the field, wherein the mobile stables (Fig. 1-3) are self-propelled, and the system includes three mobile stables (Fig. 1-3), namely a gestation stable (Fig. 1 ), a farrowing stable (Fig. 2), and a weaner / finishing stable (Fig. 3), and wherein the stables (Fig. 1-3) include connection devices so that sows can be moved from the gestation stable (Fig. 1 ) to the farrowing stable (Fig. 2), and piglets - preferably together with the sows - can be moved from the farrowing stable (Fig. 2) to the weaner / finishing stable (Fig. 3), and the sow can be moved back to the gestation stable (Fig. 1 ) after the piglets are weaned, characterized in, that the system comprises further surveillance equipment, and the system comprises means for transferring of information from the electronic eartags and from further surveillance equipment to achieve real time surveillance and storage of data on each animal, and that the crop in the field is also surveilled and controlled by means of registered data about plant growth, feed intake of the pigs, the condition of the plants (trampled, bitten) the regeneration time of the plants, meteorological data, the moisture content of the soil, etc.

2. Mobile pig farming system according to claim 1 , wherein the system comprises means for transferring information so that data can be transferred to the internet / a cloud unit and be computed with artificial intelligence to provide a selflearning system for optimum control of the systems.

3. Mobile pig farming system according to claim 1 or 2, wherein the electronic eartags comprise Bluetooth-technology.

4. Mobile pig farming system according to any of the preceding claims, wherein the stables comprise a substructure with an undercarriage (21 ) that enables them to be moved across a field, and each stable is equipped with propulsion means such as electric, hydraulic, or electric / hydraulic devices to ensure that the stables are self-propelled, and the stables are also equipped with walls and a roof structure (3) and include devices for the storage and distribution of feed and water to the animals and are connected to an outdoor pen (2), and wherein a resting area (4) is provided with a solid floor on at least part of the floor surface.

5. Mobile pig farming system according to any of the preceding claims, wherein the outdoor pen (2) can be lifted by means of lifting equipment.

6. Mobile pig farming system according to claim 5, wherein a bottom frame of the stable (1 ) is supported by a hydraulic construction (34, 35, 36) that is connected to the undercarriage (21 ) via a central ball joint (37).

7. Mobile pig farming system according to any of the preceding claims and comprising walls, a roof construction (3), floors, and partition walls, wherein the stables are modular, meaning that they are build by means of modules that are provided with coupling means so that they can easily be assembled, taken apart, and transported for rebuild or renovation / changing of parts.

8. Mobile pig farming system according to any of the preceding claims, wherein the outside pen (2) is provided with a permanently mounted shadow netting (27) and devices for drinking cups (26) and sprinkler system (25).

9. Mobile pig farming system according to any of the preceding claims, wherein each of the stables (1) is provided with a climate control system such as an electrically powered heat pump with one or more blowers that can provide for thecorrect temperature and humidity in the resting areas (4).

10. Mobile pig farming system according to any of the preceding claims, wherein the gestation stable comprises a pen area for sows (4), a feed dispenser (14), a boar pen (11 ), and a sick and sorting pen (7).11 . Mobile pig farming system according to any of the preceding claims, wherein the farrowing stable comprise 16 to 20 separate pens that are provided with piglet nests (12) which are, preferably, heated by means of heat lamps and / or heat mats, and which has a solid floor and bedding of for instance straw, where access to the pens is via a controlled access door so that only a certain sow can enter the pen, from a walkway (8) with slats that end in a ramp (6), which gives the sows and the piglets access to the outside pen (2).

12. Mobile pig farming system according to any of the preceding claims, wherein the fattening stable comprises common living areas for sows and piglets and different feed dispensers (14) for sows and piglets.

13. Mobile pig farming system according to claim 1 , wherein the system comprises automatic seed spreaders (39), for example mounted on the outdoor pen (2), where the seed spreaders automatically distribute seeds as the stable moves across the field, so that the seeds can be trampled into the soil by the pigs, where the seed spreaders (39) are filled with a seed mixture adapted to the season and the desired vegetation goals for the area, where each seed spreader can distribute seeds over a width of approximately 4 meters, for example, where up to five seed spreaders (39) may be mounted on the outdoor pen, and where the electric control of the seed spreaders (39) ensures activation and deactivation synchronized with the movement of the mobile stable and fencing system.

14. Method for pig production comprising the following steps: transporting gilts or sows to a gestation stable where they are brought into heat and inseminated if not already pregnant, after a period moving the gestation stable near a farrowing stable and transferring the sows to the farrowing stable for farrowing and initialpiglet rearing, after a period moving the farrowing stable close to a finishing stable and transferring the sows and piglets to the finishing stable where they remain together for a period, after another period moving the finishing stable near the gestation stable and subsequently transferring are sows back to the gestation stable to repeat the process while the piglets remain in the finishing stable until they are ready for slaughter, and throughout the entire process the stables are moved across a field where the stables (1 ) have automated hatches (9) to provide the animals access from one stable to the next, with these hatches preventing the animals from moving back, and activation of the automated hatches (9) is controlled by signals from electronic ear tags placed on the animals characterized in, that the crops in the field are also surveilled and controlled by means of registered data for plant growth, feed intake of the pigs, the condition of the plants (trampled, bitten) the regeneration time of the plants, meteorological data, the moisture content of the soil, etc.

15. Method for pig production according to claim 14, wherein the method comprises transmission of information so that data can be transferred to the internet / a cloud unit and be processed with artificial intelligence to deliver a self-teaching system for optimal control of the systems.

16. Method for pig production according to claims 14 or 15, wherein the eartag further comprises a Bluetooth-unit that is used for location control so that it easy to detect if all animals are moved to the next platform or not.

17. Method for pig production according to any of claims 14 to 16, wherein the sows stay at the piglets in the finishing stable for approximately 3 weeks for gradual weaning of the piglets.

18. Method for pig production according to any of claims 14 to 17, wherein the field is planted with row crops, and wherein the pig's intake a significant part of their nutrition needs from the field while they, simultaneously, fertilize the field and perform a tillage of the soil.

19. Method for pig production according to any of claims 14 to 18, wherein automatic seed spreaders (39), for example are mounted on the outdoor pen (2), where theseed spreaders automatically distribute seeds as the stable moves across the field, so that the seeds can be trampled into the soil by the pigs, where the seed spreaders (39) are filled with a seed mixture adapted to the season and the desired vegetation goals for the area, where each seed spreader can distribute seeds over a width of approximately 4 meters, for example, where up to five seed spreaders (39) may be mounted on the outdoor pen, and where the electric control of the seed spreaders (39) ensures activation and deactivation synchronized with the movement of the mobile stable and fencing system.

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