The present invention provides a duct member (140) for enhancing economy and efficiency of operation by making the management of pigpen more efficient in livestock farms where pigs are raised in large quantities, and in particular, easily manufacturing an air duct (130) for supplying fresh air outside and facilitating assembling and installation in the field. The duct member (140) is formed to have a predetermined length and is easily to enter and exit the pigpen, and the air duct (130) can be constructed by simply assembling a plurality of the duct members (140). The duct member 140 to be assembled can be assembled in various forms to enhance the air blowing function, and is divided by a split partition plate (170) so that large and small air ducts (130) can be constructed. Therefore, the diseases and death caused by the temperature difference and oxygen deficiency of the pig can be prevented by jetting the air evenly in a pig room (120). The present invention is a duct member which can be used effectively in the automation facility of a livestock raising company.
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