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The nutritive value of Panicum maximum (Guinea grass): I. Yields and chemical composition related to season and herbage growth stage*

Published online by Cambridge University Press:  27 March 2009

W. L. Johnson ,
W. A. Hardison  and
L. S. Castillo
W. L. Johnson
Affiliation:
Department of Animal Science, Cornell University, Ithaca, New York, U.S.A.
W. A. Hardison
Affiliation:
Dairy Training and Research Institute, College, Laguna, Philippines
L. S. Castillo
Affiliation:
Department of Animal Husbandry, University of the Philippines College of Agriculture, College, Laguna, Philippines
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Extract

The results of more than fifty estimates1 of herbage yield and ninety-seven analyses of chemical composition are presented in the first of several reports on nutritive evaluation studies of Panicum maximum (guinea grass). Effects of stage of maturity and season are discussed.

Herbage yield increased at an increasing rate with maturity, and was depressed by about 40 % in the dry season compared to the wet season. The most significant differences in chemical composition were a decrease in crude protein from 9·8 % to 6·6% and a corresponding increase in crude fibre from 32·1 % to 39·4% as the grass matured from about 2½ weeks to about 2½ months in age. An increased level of nitrogen fertilization resulted in crude protein content being nearly doubled and crude fibre somewhat reduced.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 69 , Issue 2 , October 1967 , pp. 155 - 160
Copyright
Copyright © Cambridge University Press 1967

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