The invention relates to a plant for feeding poultry intended to equip a livestock building including at least one liftable feed line by means of a winch (4) actuating a main cable (3) to which said feed line is connected, said feed line comprising a plurality of feeders (2) attached to a food conveyor tube (1) and dispensing means (9,10) of said food in said feeder (2), said conveyor tube of foodstuff (1) being connected to said main cable (3) by suspension cables (6) and being composed of a plurality of tube portions (1a, 1b, 1c, 1d) connected to each other, said installation being of further provided with means for rotating said conveyor tube itself, or a section thereof, so as to arrange the pivoting of said feeders (2), said rotating means comprising at least one assembly forming lever (16) including a ba lever arm (17), one end (17a) of which is intended to cooperate with a lever catch (28) fixed to said conveyor tube (1), said installation comprising a connecting cable (20) connected to one of its ends At the other end (17b) of said lever arm suspension cables (6) of the conveyor tube (1), said installation being characterized in that anti-rotation metal notches (la ', lb') are provided at the junctions between said tube portions (la, lb, 1c , 1d). L'invention concerne une installation pour l'alimentation de volailles destinée à équiper un bâtiment d'élevage incluant au moins une ligne d'alimentation relevable grâce à un treuil (4) actionnant un câble principal (3) auquel ladite ligne d'alimentation est reliée, ladite ligne d'alimentation comprenant une pluralité de mangeoires (2) fixées à un tube convoyeur d'aliment (1) et des moyens de distribution (9,10) dudit aliment dans lesdites mangeoires (2), ledit tube convoyeur d'aliment (1) étant relié audit câble principal (3) par des câbles de suspension (6) et étant composé d'une pluralité de portions de tube (1a, 1b, 1c, 1d) reliées les unes aux autres, ladite installation étant de plus pourvue de moye
