668 



EXPERIMENT STATION RECORD. 



[Vol 40 



Feeding trials with corn by-products, Palmo Midds, and commercial 

 mixed hog feeds, 1917-18, J. H. Skinner and C. G. Starr {Indiana Sta. Bui. 

 219 (1918), pp. 3-26, figs. 2). — Three feeding trials designed primarily to test 

 substitutes for corn in hog rations are reported In this bulletin. The first 

 began August 10, 1917, lasted sixty days, and involved 9 lots of 10 hogs each. 

 The second began November 6, 1917, lasted sixty -five days, and Involved 9 lots 

 of 7 and 1 lot of 6 hogs. The third began March 26, 1918, lasted sixty days, 

 and included 8 lots of 7 hogs and 1 lot of 6. The products tested were three 

 corn feed meals, hominy feed, starch corn germ meal, hominy corn germ meal, 

 wheat middlings, Palmo Midds (a by-product resulting from the use of wheat 

 middlings to absorb palm oil in the manufacture of tin plate), and two com- 

 mercial hog feeds. These were combined in various ways with ground corn 

 and tankage. Proximate analyses of the particular lots of feed used except 

 tankage are reported. With one exception, the feeds of all lots were given in 

 self feeders. In some cases the hogs had complete free choice, in others the 

 product tested was mixed in a definite proportion with either ground corn or the 

 tankage. In each trial a check lot was fed ground corn and tankage (free 

 choice). The authors divide their report into five parts, as follows: 



1. Corn feed meals v. ground corn. — Three lots In the first trial and two in 

 the second received corn feed meal and tankage. With one exception the daily 

 gains were higher than in the check lots. No marked differences were found 

 in the feeding value of the three samples of corn meal teed. 



2. Hominy feeds v. ground com. — The use of hominy feed for fattening hogs 

 was the subject of seven feeding tests at the station from i:«»s to 1911 (E. S. R., 

 27, p. 571). Since then the process of manufacturing hominy feed has changed 

 somewhat and in many factories corn oil is extracted from the germs. A lot In 

 the first trial and a lot in the second were given hominy feed and tankage (free 

 choice). These made somewhat smaller gains than the check lots. It is con- 

 cluded that the feeding value of hominy feed has declined since 1911. In the 

 earlier trials hominy feed was found to be about 15 per cent more efficient than 

 corn meal. 



3. Com germ meal*. — In three trials 14 lots received corn germ meals. The 

 difference between the feeding stuff officially named corn germ meal, which is 

 a by-product of the manufacture of starch, glucose, nnd sirups, and hominy 

 corn germ meal derived from the manufacture of corn flour, corn meal, and 

 hominy grits is emphasized. For purposes of distinction the former is referred 

 to as starch corn germ meal. The method of manufacturing each is briefly out- 

 lined. Both were used in these experimental The rations given and the results 

 are summarized in the following table: 



Corn germ meal a? substitute for or supplement to corn in rations for hogs. 



