Current Situation and Trend of Pig-raising Equipment in China

At present, the technological level of pig-raising equipment in China has developed from intermediate stage to high-end stage. At present, the understanding of equipment in most pig farms in China remains that equipment in pig farms is equivalent to pig pens, while the importance of automatic feeding system, environmental control system and equipment for waste treatment system is neglected. But things are constantly changing. With the development of modern information technology and the frequent exchanges among pig producers in the world, some enterprises with advanced concepts begin to learn from the advanced industrial pig production equipment in the West and apply it to pig production. The speed of updating pig production equipment has been greatly accelerated because of the influence of foreign countries.
It can be said that the development of pig-raising equipment is one of the most important forces to promote the positive development of animal husbandry machinery, from traditional farming to combination of science and technology, and then from traditional farming to science and technology and mechanization.
I. Current Situation of Pig-raising Equipment

(1) Comparison of traditional and modern farming equipment
1. Piggery construction and planning are closely related to equipment selection. There are great differences between traditional planning 600 sow farms and modern 600 sow farms in terms of construction and planning. Traditional pig farms have a large number of pigsty buildings, a large area of pigsty, large investment in civil construction and equipment, and a large labor intensity. Modern pig farms have fewer pigsty buildings, saving land, small building area, less investment in civil construction and equipment, high degree of automation and low labor intensity. In the case of traditional planning and design, the equipment has reached the general level, with an investment of 20,000 yuan per sow. In the case of modern planning and design, the equipment has reached the world-class level with an investment of 15,000 yuan per sow. Compared with traditional design planning, it saves 25% investment. In terms of the structure of pigsty, the traditional pigsty in China mostly adopts open and semi-open pigsty buildings. Apart from sow house and piglet breeding house, there are few measures to control the internal environment of pigsty, basically relying on natural ventilation. Piggery thermal insulation performance is poor. Therefore, the traditional pig farm planning and housing structure decide that the modern equipment is seldom used, which is not conducive to the growth of pigs and the waste of labor force, resulting in a decline in production efficiency. The modern pigsty takes into account the requirements of ventilation and heat preservation, as well as the requirements of reducing labor and improving work efficiency comprehensively and scientifically. The modern piggery is integrated with advanced climate control, automatic feeding and high efficiency pigsty to form a modern technological facility suitable for pig growth and reproduction. Pigsty pen is the necessary equipment of factory pig farm. It feeds different types of pigs with different ages, forming the basic production unit of pig farm. The feeding density, feeding environment, feeding and management conditions of pigs are closely related to the form, structure, material, arrangement and combination of pigsty. With the further development of intensive pig production and the further understanding of pig biological characteristics, pigsty has also been improving in technology.

(1) Delivery column
The delivery area is the core area of the pig farm. The operation benefit of the whole pig farm depends to a great extent on the production condition of the delivery area. Good technology design of delivery bar is very important to improve the feeding effect in the delivery stage, and is the key to the success of pig production. Traditional sows are raised in high beds. Sows and piglets live on leaky floors, separated from cold and humid ground. The excrement quickly falls into the excrement ditch through the leaky floor, which reduces the chance of contact with excrement and urine, and keeps the bed clean, sanitary and dry. But it is difficult for sows to get into bed. Piglets can not be segregated by steel tube barrier, which increases the chance of piglets infecting each other. The incubator is a closed device, mostly located in the corner of the limit rack, far from the sow's lying position, especially far from the sow's ** position, which is not conducive to finding incubator after piglets are born and quickly coming to ** after coming out of the incubator. Modern childbirth fence floor is generally flat with the ground, fence with PVC partition, piglet heating area is not completely closed, sow fence length, width and size can be adjusted, there are pressure bar and adjusting bar. It provides an optimum growth environment for piglets and improves the survival rate at the same time. The delivery bar and the ground are even, which can reduce the stress of sows going to bed. The width and length of sow piglet pen can be adjusted according to individual requirements, which can provide the best conditions for sow to lay and lactation. The adjusting rod is helpful for sows to lie up and adjust the moving space of sows. At the same time, it plays the role of traditional piglet harrow, effectively ensuring that sows do not press the piglets when lying down. According to the requirement of sows to maintain regular visual contact, sows'lying area is set opposite the incubator. The incubator is not closed. Piglets can come out of the incubator at any time. Sows instinctively watch the piglets, which is conducive to piglets' rapid suckling in front of sows.

(2) Nursing Bar
After weaning, piglets are transferred to the nursery. According to the physiological characteristics of piglets, piglets have just weaned and left their mothers to live independently. Their digestive function and ability to adapt to environmental changes are not strong. They need a clean, dry, warm, low wind speed and fresh air environment. The traditional protective fence uses steel wire mesh for general floor and fence for fence. The biggest problem is that piglets can not find a small environment without thieves, resulting in an increase in mortality, followed by unreasonable design of the feeding tank, waste of feed, and again, the feeding tank does not match the pig pen, resulting in waste of feeding tank or pig pen. Modern conservation fences use PVC boards or railings, but the floor is generally plastic floor, material trough and area matching, and divided into heating area, active feeding area and excretion area. Not only does it have a good temperature environment