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Comparative Value of Kentucky Bluegrass, Kentucky 31 Fescue, Orcard Grass, and Bromegrass as Pastures for Milk Cows.¹ I. How Kind of Grass Affected Persistence of Milk Production, TDN Yield, and Body Weight

Dairy Section, University of Kentucky, Lexington

ABSTRACT

Little is known about the nutritive value of the various grasses used as pasture for milking cows. Efforts in Louisiana and Kentucky to use supplemental feed such as hay, silage, or an extra amount of grain (9, 10, 12) in order to keep a high level of milk production while cows are grazing pastures fair to good in quality have met with either little benefit or only moderate improvement in milk production. In short-time trials it was observed, however, that the supplementation apparently was more beneficial when fed to cows grazing Kentucky 31 (tall) fescue or Kentucky 31 fescue and ladino pasture than when fed to cows grazing orchard grass pastures.

In a 3-year trial at the Kentucky Agricultural Experiment Station (11) it was found that orchard grass-ladino pasture ranked first in monthly (4-week) persistency of milk production (98.3%), followed in order by Kentucky 31 fescue-ladino (89.2%), Kentucky bluegrass-ladino (87.2%), and a straight stand of Kentucky 31 fescue (81.4%).

¹ The investigation reported in this paper is in connection with a project of the Kentucky Agricultural Experiment Station and is published by permission of the Director.

² Present address: Dairy Department, Michigan State University, East Lansing.

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