Fifty Hereford heifers were divided into five lots as equally as
possible on the basis of weight, size, conformation, and previous treatment.
These heifers were wintered as calves on the following rations:
(1) alfalfa hay, (2) Atlas sorghum silage. 2 pounds of corn and 1
pound of soybean oilmeal pellets, (3) Atlas sorghum silage and 3
pounds of special supplement, (4) prairie hay, 4.9 pounds of corn and
1.25 pounds of soybean oilmeal pellets, (5) corn cobs, 4.9 pounds of
corn and 1.9 pounds of soybean oilmeal pellets.
There were 10 animals on each of these rations. Each of the five lots
in this experiment had two heifers from each of the five previous
treatments.
A mixture of one-half alfalfa and one-half bromegrass hay which had
been chopped to facilitate mixing was used as the roughage. Coarsely
ground corn and milo grain were used as the concentrates except in
Lots 2. 4, and 5, where soybean oilmeal was added to maintain the same
level of protein in all lots. Chemical analyses of feeds used in this
experiment are shown in Table No. 36 in the back of this circular.
Water. salt, and ground limestone were provided free choice at all times.
