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Nutritive Value of Corn Silage as Influenced by Grain Content^1,2,

Dairy Science and Agronomy Departments, University of Maryland, College Park 20740

ABSTRACT

Two varieties of corn selected for a large difference in ear to stalk ratio were evaluated as silage with intake and digestibility trials with Holstein steers. In the second year the same two varieties were evaluated with and without ears by the same test with steers and a lactation study. The effect of varietal difference in grain content and planting rate changed the digestible energy content by only 2 to 3 percentage units. Milk production was not significantly affected by variety but was lower when the ears were removed even though additional concentrates were supplied.

¹ Scientific Article A-1648, Contribution 4380 of the Maryland Agricultural Experiment Station.

² This work supported in part by a research grant from the Dairy Cattle Branch, Animal Husbandry Research Division, ARS, USDA.

³ Present address: Animal Sciences Department, University of Kentucky, Lexington 40506.