In 2008, the company introduced 866 heads Duroc, Changbai and Dabai core group boar from Hylife company of Canada. At the same time, it introduced the genetic improvement technology and achievements of boar. Through continuous introduction of the latest development of genetic resources, continuously improved the frequency of the core group of superior gene of Tianzhao boar,sharing the genetic progress of the core population, ensures that the performance of Tianzhao pigs remains at the same level with their counterparts in North America.

Tianzhao Pig Industry based on the high-quality provenance and continuous improvement of genetic technology, has established a core and efficient management system , adhering to the management concept of “biological safety, pig-based, behavioral norms and accurate data”. It ensures that the pig quality and production efficiency of Tianzhao pig industry are at the leading level in the industry.

1) Structural features: large area, large span, steel structure workshop, and internal pig house equipments more.

2) Purpose: Winter fresh air

3) The purpose of new winds in winter: provide enough fresh air for pigs,reduce the humidity, water vapor and harmful gases carbon dioxide, ammonia, carbon monoxide in the house.

4) On-site pig house situation: pig house is divided into fattening house, pregnancy house, delivery room

5) Data can be collected at any time, and the temperature, humidity, ammonia and other parameters of each pig house can be recorded and transmitted remotely to help analyze the health of pigs.

The equipment for low temperature in the northeastern winter is selected by Liangmo New Fan Group (using the heating hot water energy in the pig house for fresh air preheating)

Axial fans are selected in areas with high temperatures in winter in Sichuan

2. Design and calculation of fiber fabric air supply system

1) Shape design of flexible fiber cloth duct system

According to the characteristics of the site, the space is abundant, the installation is simple, the economy and other factors are all adopted the circular flexible air duct. Circular duct are mainly used in open spaces and high-altitude buildings

2) Flexible fiber cloth duct system size design

Determine the diameter based on air volume and system inlet wind speed and space constraints

Parameters Table:

3) Design of air outlet mode of flexible fiber cloth duct system

Other pig houses adopt a small hole to uniformly out the wind Liangmo system. The airflow organization is based on the principle of air flow convection. The small hole air supply is sent to the target area at a certain wind speed for heat exchange to meet the air supply requirements. Suitable for areas with high requirements for heating and cooling .