Show ventilation FOR BARN ESSENTIAL it will promote health and comfort of dairy daily animals ventilation la Is necessary for the henith health und and comfort of it will preserve the building and coni con i tents from mold and rot due to excessive moisture and will aid in the P prevention reven tion and control of disease there are horns barns today where the construction Is such that there ls is ample movement of air through leaky walls hay chuta chute q 6 silo chutes and stairways such buildings la in extreme weather however become too cool for dalry cattle to give economical production for the best results we must admit fresh air remove stole stale air and eon con arol temperature and humidity A system for ventilation consists of openings opening sor or inlets to admit air open ings or out takes to remove air and some means of c eating creating r a movement or of air the factors having the greatest effect on oil neutral are the hent heat which Is supplied by the animals mals in a building E since the heat to create an air movement through a barn must be furnished by the animals in the barn it Is evident that tin the kind and size ize of animals and tile construction of the barn must be carefully considered A cow or horse weighing Ing 1000 to 1200 1200 pounds will heat sip approximately proximately COO cubic feet space in a well hullt built barn only such space us as fin an animal can heat should he be provided for dairy barns the ceiling height should not be over six feet in the clear the be king system of taking foul air out of tile the barn near the door and admitting fresh nl clr enear near the ceiling hai proved very satisfactory and Is the most widely use used definite rules for the alie king system of ventilation are 1 the stable should be of tight warm construction 2 allow ROO COO cubic feet of space for each 1000 pound animal or equivalent 3 intakes should be many and small 4 intakes should be located every ato 8 to 12 feet around the bull building ding 5 intakes enter at ceiling open at outside about 4 feet lower 6 intakes should ile he insulated 7 out takes f few ew and large 8 out takes draw from 15 inches above floor 1 0 out takes equipped with heat door near ceiling 10 out tadej insulated straight high and fitted agthe at lie top ton with a roof ventilator 11 allow one square foot of nt out take flue for four 1000 to 1200 i pound cows or ll 11 horses or equivalent t in live stock 12 total capacity of intakes should b be equal to or slightly greater than out takes 13 air can be drawn to the out take it a maxi maximum murn of about 30 feet 14 one roof ventilator for earh earb 35 feet in length of it a b barn arn 30 36 feet to 40 feet wide |