DAIRY AND GENERAL 



Ventilation Necessary to Animal Health. 



Barn ventilation is necessary to regulate temperature, 

 to remove the moisture and bad air and to provide fresh air. 

 When human beings live in poorly ventilated rooms their 

 efficiency is reduced and they are easily attacked by disease. 

 The effect on animals may be expected to be the same. Poor 

 ventilation in stables is easily detected by an accumulation 



Fig. 2. Letting Fresh Air In and Foul Air Out. 



The arrows show how the air is brought into the barn through the inlets 

 and the foul air drawn out at the outlets. 



of moisture on the walls and ceiling during warm weather, 

 and by frost in cold weather. In Wisconsin, where it is 

 necessary to keep animals in the barn during the winter, it 

 is absolutely essential to have a ventilating system. 



The King system of ventilation, devised by the late F. 

 H. King, for years connected with the Wisconsin Experi- 

 ment Station has come to be generally adopted for barn ven- 

 tilation. It has been widely used in all climates and has 

 proven as satisfactory as can be expected from a partially 

 automatic system. No ventilating system yet devised is 

 entirely automatic, so even the King system will need some 

 attention. In the extreme north the temperature is at times 



