518 



Feeds and Feeding. 



acre, is less than that of husking the corn. Pigs weighing from 100 

 to 140 lbs. are best for foraging, and those reared on pasture, being 

 more active, are better than pen-reared pigs. It was found best to 

 so confine the pigs that they would clean up a fenced portion of the 

 field in 20 or, better, 14 days, tho some farmers prefer to let the 

 pigs range the w^hole field. The following table shows the days re- 

 quired by 125-lb. pigs to forage an acre yielding various amounts 

 of marketable corn: 



Niimher of days required by pigs to clean up 1 acre of corn. 



Number of pig's 



When 20 pigs forage 

 When 40 pigs forage 

 When 60 pigs forage 

 When 80 pigs forage 



Yield of corn per acre 



Field feeding of corn is most successful when the weather is dry. 

 It is not judicious to keep pigs in the fields after heavy rains, for 

 they then waste corn and injure the land. Pumpkins and rape are 

 helpful and economical in field-feeding pigs, since there is no cost 

 for harvesting, and these feeds supplement the corn and add variety 

 to the ration. 



845. Corn-and-cob meal. — The studies of the stations on the merits 

 of corn-and-cob meal for swine feeding have shown widely discor- 

 dant results. Those of Kennedy and Bobbins of the Iowa Station,^ 

 which are by far the most detailed, complete, and satisfactory, are 

 condensed in the following table : 



Corn-and-coh meal compared with whole corn and corn meal for pigs. 



Kind of corn fed 



Dry ear corn 



Soaked shelled corn 



Dry corn meal 



Soaked corn meal 



Dry corn-and-cob meal 



Soaked corn-and-cob meal 



Av. wt. at 

 beginning 



Lbs. 

 148 

 134 



128 

 145 



118 

 123 



Av. 

 daily 

 gain 



Lbs. 

 0.74 

 0.63 



0.61 

 0.72 



0.51 

 0.56 



Corn for 



lbs. 100 



gain 



Lbs. 

 456 

 513 



595 

 555 



604 

 583 



Lbs. gain per 

 bu. of corn 



Lbs. 

 12.3 

 10.9 



9.4 

 10.1 



9.3 



Bui. 106. 



