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particles which, coupled with the extreme heat, may explain the availability of minerals.
The buffering effect of the high calcium content of the cement dust also may be beneficial.
Further research being conducted at Beltsville with finishing steers and growing lambs may explain the cause of the unexpected results.
Gerken said that it is not known if cement dust other than that obtained from a Georgia cement plant will produce the same results. Tests have begun to determine the chemical content of the product since one theory for the increased growth is the correction of a yet unrecognized trace mineral deficiency that could be limited to certain regions of the country.
In addition faster gains on a grain-hay finishing ration, the cement dust-fed steers had a 21 per cent improved feed efficiency over the control steers in the 112-day feeding trial. Carcasses from the treated steers were fatter and graded higher at slaughter.
The control ration contained fescue hay, timothy
93.7%