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Effect of Age on the Chemical Composition, Palatability and Digestibility of Grass Leaves¹

Synopsis: Young leaf blades from the top of heading culms of Gahi-1 pearl millet and Georgia 337 Sudangrass were more palatable and contained more crude and true protein and less lignin than older lower leaves taken from the same culms. Eighteen successive leaves from top to bottom of the culms of late-maturing millet plants gradually decreased from 73.9% to 58.2% in digestible dry-matter content. Millet genotypes differed significantly in digestible dry-matter content.

² Principal Geneticist, Crops Research Division, ARS, USDA, Analytical Chemist, Animal Husbandry Research Division, ARS, USDA, and Assoc. Animal Husbandman, U. of Georgia, College of Agriculture Experiment Stations, Coastal Plain Experiment Station, Tifton, Ga., respectively. The authors gratefully acknowledge the assistance of Findley Pate in running the in vivo digestibility analyses.

Received for publication June 6, 1963.

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