New York Agricultural Experiment Station. 55 



with lot III and 3.8 pounds with lot IV. The food cost of gain 

 including cost of rock and shell was 5.2 cents for lot III and 5.1 

 cents for lot IV. More food was eaten by lot III, growth was 

 faster, and greater average weight was attained. 



GROUP c. 

 The percentage of ash constituents supplied by the food to this 

 group was not unusually high nor very low, being about 3.1 per 

 ct. of the dry matter. With the Florida rock added about 9.8 

 per ct. of the total dry matter in the food for lot V was mineral. 

 By this lot about 4.7 pounds of total dry matter, exclusive of 

 rock, was required for each pound gain in weight and 5.5 pounds 

 was required by lot VI having sand and no rock. The food cost 

 (including rock) for lot V was 5.8 cents per pound gain and for lot 



VI 7.1 cents. Somewhat less food was consumed by lot V and a 

 greater growth made. 



GROUP D. 



In the rations for lots VI, VII, VIII and IX the ash consti- 

 tuted from 3.1 to 3.3 per ct. of the total dry matter, not a low 

 percentage for a grain ration. With the ground rock added for 

 lot IX the mineral matter was 12.7 per ct. and with the bone ash 

 and shell for lot X the mineral matter was 12.9 per ct. of the total 

 dry matter. 



The results favored lot IX having the Florida rock. The net 

 gain in weight was greatest and the least amount of food was 

 required for each pound gained. The weight per fowl at the 

 end was considerably greater than for lots VII and VIII. In the 

 average weight attained lot X was not surpassed. This lot, how- 

 ever, was alone favored by a larger proportion of male chicks. 

 More checks died in lot X than in any other (many of the chicks 

 lost from these lots were killed by rats). The results from lot 

 VIII having sand added to the food were better than from lot 



VII having Hone; and the net results were better than from lot X 



