THE BROODING OF CHICKS 



237 



days, the average temperature being 94°. The mortality 

 was 10 per cent. The fourth brooder had an initial hover 

 temperature of 90°, which was gradually reduced to 74° 

 at the end of the period. The average temperature was 85° 

 and the mortality was 24 per cent. 



Kic 



Front view 



Plan of colony Ijrooder house. (Courtesy of Missouri Agricultural 

 Experiment Station.) 



As the result of this experiment, Lewis suggests 100° as a 

 suitable temperature for the first week, 96° for the second, 

 92° for the third, and SS° for the fourth, where the chicks 

 arc Leghorns. 



It is unsafe to lay down absolute rules for all breeds and 

 conditions. First and always the chicks must be comfortable. 

 In quite cold weather it is likely to take a higher temperature 

 to accomplish this than in more moderate weather. Less heat 



