Show air Is most important factor for farm stock air 1 one of the me most moat important factors influencing the braith of farm animals and ad it Is if therefore essential that adequate means mail of bilat ventilation on should he be provided for buildings bull dinga in which animals are am kept during th the i inter are there are two things aich a vead hillo system must do according to dr be C D rice blee of the veterinary pathology department iowa state start college th these em are to supply y sn abundance ad ot of 1 fresh h air r and it remove ve loul foul air without interfering Inter ferng with the health of the and malt through gh the creation of drafts or a excessive cold ren I 1 the be average go raw cow it breathe breach almut about 1180 gallons of air pm hour b but at in order older to keep the air fairly rash b new air mut be supplied at tile die rate of mamut about gallons per par min at oto the box bor breathes 45 gallons of air b per hour bear and should have a supply of suite gallons per par minute laudente while the tha hen ti reathea am at about 6 gallons per hour and should have bave 4 44 gallons supplied P per re minute I 1 is the economical ad stages of a proper system arm its are evident its t ft from the be 1 of one arm experiment in which bleb milk production in a 2 herd ot at go 60 con car a was increased ill by baid per to cow per rear on an S similar ravinna mar merely at human tile file ot of a ventilation Teotil atlon seeking II information mucia on an the construction or in ital lation of bistema canet help from colt agents lerono ler mno 1 meat anch am or thou their state experiment mati all all |