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An Experimental Study of Hogs following Cattle

Iowa Agricultural Experiment Station

Abstract

Experimental Procedure

Nine years ago, or in the fall of 1915, the Animal Husbandry Section of the Iowa Agricultural Experiment Station developed and began using a new method of determining "pick-up" and pork credits of hogs following cattle.

Briefly, the method of procedure is this: A lot of hogs follow each lot of cattle. These hogs now receive two-tenths of a pound of meat meal tankage, 60 per cent protein grade, once daily with the corn grain, and block salt, self-fed. A limited amount of shelled corn is given twice daily in troughs inside the steer feeding barn. This grain allowance being limited to insure that the hogs clean up the grain from the steers' droppings in good shape. A separate though similarly selected and directly comparable check lot of hogs is self-fed these same feeds in dry lot.

The feed requirement for 100 pounds of gain of the check hogs up to the time they equalize the gains made by the separate lots of hogs following the cattle is then compared with the feed requirement (fed on the side) of the hogs following.