86 How to Make Creamery Butter on the Farm 



Health above all things should be perfect in a dairy 

 cow. 



Ventilation of Dairy Barns. 



In ventilating dairy barns a great many things must 

 be taken into consideration ; location of barn, the gen- 

 eral surroundings, height of barn, the number of cows, 

 etc. The sizes of intakes and outlets depend on vari- 

 ous conditions. No ventilation will work automati- 

 cally and it requires good judgment along with proper 

 equipment to make ventilation proper and effective. 

 The temperature of the dairy barn should be 60 to 65, 

 therefore when the weather is very cold it takes but 

 little air circulation to maintain good ventilation and 

 still retain the proper heat. There are people who 

 have made a study of ventilation for years but still 

 come far from the demands of the perfectly ventilated 

 dairy barn. All barns should be equipped with some 

 kind of ventilation. The placing of canvas over the 

 top of windows and a heavy strip of canvas on the bot- 

 tom of the same window, will help to ventilate as the 

 foul air will pass off through the canvas at the top and 

 the fresh air will pass through the bottom. The can- 

 vas will break the wind which causes the draught. 

 When too much air is let in and taken out of the dairy 

 barn in cold weather it causes the heat from the cow 

 to congeal and the walls become damp and drops of 

 water form on the sides and ceiling. When installing 

 galvanized pipes in barns for intakes and outlets, great 

 care should be taken so these can be closed off or partly 

 closed when conditions require it, and also installed 

 where they will not come in contact with cold, as the 

 damp air passing through will freeze and cause trouble. 



