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The Effect of Feeding Pea Vine Silage on the Carotene and Vitamin A Content of Milk^1,2

ABSTRACT

Cows fed a good quality of pea vine silage produced a milk higher in carotene and vitamin A than when fed a dry ration. They also maintained milk production more satisfactorily on the silage than on the dry ration. It should not be concluded from these results, of course, that pea vine silage is always superior to alfalfa hay. Because of variations in the quality of both silage and hay, a general conclusion could not be drawn until after extended comparisons had been made.

¹ Published with the approval of the Director of the Wisconsin Agricultural Experiment Station, University of Wisconsin, Madison.

¹ The authors are indebted to Warren G. Clark and Berger Sandstrom for their cooperation in planning and carrying out the feeding work of this paper.