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Tno.ifeS—79 
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RATION EXPERIMENTS WITH SWINE, 1906-1908 
W. L. CARLYLE and G. E. MORTON 
INTRODUCTION 
This bulletin records two experiments, the first conducted 
during the winter of 1906-07, and the second during the winter of 
1907-08. Both experiments were planned to discover what protein 
feeds would prove most economical when fed with barley and 
with corn. These two grains are the most available and commonly 
used of any of the feeds used in this State, with the possible excep¬ 
tion of field peas. But neither corn nor barley is an economical 
feed for hogs when fed alone. This is now recognized in the corn 
belt, after much experimental work by the various experiment 
stations. Our problem, therefore, is to find what available feeds 
may be used in this State to best advantage for supplementing these 
grains. 
THE FEEDS SELECTED. 
Alfalfa hay, wheat, field peas, wheat shorts, and packing 
house tankage were the feeds selected because of their availability 
throughout the State. Wheat shorts consist of the finer particles 
of bran and a portion of the kernel within the bran. They contain 
more starch and less crude fibre than bran, and are less bulky. 
Selected tankage, a packing house product, is made from residue 
meat scraps, and has a large percentage of protein. 
1906-1907 EXPERIMENTS 
Ten lots of ten head each were fed. The pigs averaged from 
66 to 70 pounds each when they were put on feed. They were Poland 
China grades, about six or seven months old, bought in the country 
surrounding Fort Collins. They were very small for their age but 
of good enough breeding to show fair returns for feed. They 
were uniform in breeding, age and condition. At the close of 
thirteen weeks feeding, the lots ranged from an average weight of 
154 pounds per head to 200 pounds per head. 
The following table gives the results: 
