244 



POULTRY PRODUCTION 



The moriality was 42 per cent. The second brooder was 

 cooler, having an average temperature of 104°, but the 

 variations in temperature were extreme, varying from 86° 



FiQ. 125 



Large colony brooder with hover raised. (Courtesy of Kansas Experiment 



Station.) 



to 120°. In this brooder the percentage of mortahty was 

 68. The third brooder was started at 100° and gradually 

 reduced to a temperature of 85° at the end of twenty-eight 

 days, the average temperature being 94°. The mortality 



