174 EXPERIMENT STATION RECORD. 



FcciliiKj toiin nith .siciitc in tliv drij lot and at pasture in I'JO'o, 1907, and 1908. 



Number 

 of days. 



Corn and pasture 



Corn, skim milk aud pasture 



1907. 



Corn meal on pasture 



Corn meal in dry lot 



Corn meal and tankage G:l on pasture 

 Corn meal and tankage 6:1 in dry lot. 



1908. 



Corn meal on pasture 



Corn meal in dry lot 



Corn meal and tankage 8:1 on pasture 

 Corn meal and tankage 8:1 in dry lot. 



Average 

 daily 

 gain. 



Lbs. 

 1.091 



1.630 



1.396 



.838 



1.989 



1.916 



1.198 



.674 



1.619 



1.574 



Feed con- 

 sumed 

 per ■ 

 pound 

 gain. 



JJ)8. 



3.815 

 2.635 

 corn; 

 8.768 

 skim 

 milk. 



4.674 

 5.945 

 3.809 

 3.892 



3.444 

 5.083 

 3.213 

 3.478 



Cost per 

 pound 

 gain. 



Cents. 



4.09 

 5.45 

 4.02 

 4.14 



In comparing light v. heavy grain rations in the dry lot there was no marked 

 difference in the economy of gain in the different lots, but there was a wide 

 difference in length of time reijnired to produce a pound of pork. If concen- 

 trates are to be used exclusively a full grain ration should be fed, but if 

 pastured, by feeding a light grain ration the hogs are induced to eat a large 

 amount of grass with a marked economy in the production. 



The following table shows the amount of grain consumed in the dry lot and 

 at pasture: 



Comparison of tight iiud licary yrain rations icitli sivinc in tlic drij lot and at 



pasture. 



Number 



of 

 animals. 



Number 

 of days. 



Ration . 



IN DRY LOT. 



Corn meal, middlings, skim milk 

 Do. i full feed 



Corn meal and tankage 8:1 



Do. i full feed 



Corn meal and tankage 8:1 



Do. i full feed 



IN PA.STUUE. 



Corn meal 



Do. ffullfeed 



Average 

 daily 



gain per 

 pig- 



ids. 

 1.277 

 .972 

 1.785 

 1.307 

 1.574 

 1.167 



1.396 

 1.118 



. Feed consumed 

 perpound gained. 



Milk. 



Lbs. 

 3.934 



3.868 



Concen- 

 trates. 



Lbs. 

 2. .588 

 2. 645 

 4. 260 

 4.363 

 3.478 

 3.520 



4.674 

 3.867 



Three experiments were conducted to secure data in regard to the amount 

 of tankage which could be fed to hogs in cattle feed lots. On the wihole 

 greater gains resulted from i lb. of tankage daily per pig than from only J lb. 



Preparation of corn for hogs, W. J. Kennedy and E. T. Robbins {loiva St a. 

 Bui. 10(j, pp. 30o-'i.j!), fifjs. I.i). — During the past 2 years the question of grind- 

 ing and soaking corn has been investigated by this station with 312 hogs of all 

 ages. The conditions were much the same as are found on most Iowa farms 

 where spring pigs are raised, the only departure frQm commou custom being 



