CORN 143 



extend over a period of ten years. Eighteen separate tests 

 were made, in which a total of 280 pigs were used. Bulletin 

 145 gives a summary of the results. 



The feed required to produce 100 pounds of gain varied 

 from 360 pounds to 820 pounds, the poorest gains being made 

 in the case of young pigs, weighing 84 pounds when the trial 

 began, which were fed upon com alone, and the best gains for 

 feed consumed were made by young pigs which were fed equal 

 parts by weight of com and middlings with a small allowance 

 of skim-milk. 



The 140 pigs fed ground com ate 5510 pounds more grain 

 and made 2036 pounds more gain than the 140 pigs fed 

 whole com. 



The pigs fed whole com consumed an average of 501 

 pounds of grain for each 100 pounds of gain, and the pigs fed 

 ground corn consumed 471 pounds of grain for each 100 

 pounds of gain. 



Eleven trials out of the eighteen showed a saving from 

 grinding, the amount saved varying from 2.5 per cent to 18.5 

 per cent. The remaining seven trials showed a loss from 

 grinding, the loss varying from 1.1 per cent to 11.1 per 

 cent. 



The average of the eighteen trials 'shows a saving of 6 

 per cent from grinding com. 



Of the ]40 pigs fed whole com, 45 pigs gained more than 

 the average, and 95 pigs gained less than the average. Of the 

 140 pigs fed ground com, 91 pigs gained more than the 

 average, and 49 pigs gained less than the average. 



The authors of the bulletin point out that the economy of 

 grinding com will depend upon the price of corn and the cost 

 of grinding, and the following table is given to assist the 

 farmer in determining when to grind : 



