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New Yorxr Aericutrcra, Experiment Sration. 287 
1 
and Chinas, 4.0 cents; for the Durocs, 5.1 cents, and for the Berk- 
% shires, 5.4 cents per pound.* For the twenty-five weeks after 
removal of the sow, the Poland Chinas ‘cost 3.91 cents 
_per pound gain; the Berkshires, 5.18 cents, and the 
Durocs, 5.57 cents; the Poland Chinas, costing 23.8 per cent, less 
than the Berkshires and 29.8 per cent. less than the Durocs. These 
pigs at the close of this trial ran from 116 pounds in weight to 
165 pounds, and after being used in another feeding trial were 
killed, when six Poland Chinas lost on the average by dressing 
19.5 per cent.; four Durocs, 23.7 per cent., and four Berkshires, 
25.6 per cent. of their live weight. 
. ° e ° i 
At the high prices of grain and the average price, for the few 
- years past, of pork, the Poland Chinas were the only pigs to: make 
a fairly profitable gain; but at the higher prices of pork recently 
prevailing, the gain made by each was a profitable one. In this 
trial record was not made of the food necessary for the sows to 
recover the weight lost, but in another trial the average cost of 
food to restore the weight lost by these same sows in suckling 
pigs was 6.37 cents per pound. By considering the weight lost 
at this value the gains made by any lot during any of the first 
three periods were not profitable. The gain made by the pigs 
during the third period, on this basis, however, was less expensive 
than that during the first. 
The condensed results for these three lots of pigs are given in the 
following tables: 

*In a later trial with pigs from the:e same sows when skim-milk was fed, the gross cost of 
increase in weight of the pigs for the first ten weeks was fur the Durocs 3.2 cents per pound. for 
the Poland Chinas 3.7 cents per pound and for the Berkshires 4.0 cents per pound, the Durocs 
making this time much the more profitable growth. Valuing the weight lost by each sow at the 
cost of restoring it, the net cost per pound gain for the time that the sow was fed with the pigs 
was 5.47 cents forthe Durocs, 6.50 cents for the Poland Chinas, and 6.78 cents for the Berkshires 
