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The nutritive value of Panicum maximum (guinea grass). III. Factors affecting voluntary intake by cattle and water buffaloes*

Published online by Cambridge University Press:  27 March 2009

W. L. Johnson ,
W. A. Hardison ,
A. L. Ordoveza  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
A. L. Ordoveza
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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Summary

Dry-matter intake (D.M.I.) from Panicum maximum(guinea grass) was studied in digestibility trials with Holstein and water buffalo bulls and in a feeding trial with lactating cows.

Differences in voluntary D.M.I. per unit body weight0·73 between the Holsteins and water buffaloes were not significant. Average D.M.I. for all bulls in all main trials was 2·16 kg per 100 kg B.W. Average D.M.I. by the lactating cows was 2·08 kg per 100 kg B.W., for all practical purposes the same as for the bulls.

D.M.I. was not related to stage of maturity or season of harvest of the guinea grass. Intakes of digestible protein, T.D.N., and digestible energy in different seasons and at different growth stages were related to the percentage of those nutrients in the grass.

Correlation coefficients were 0·68 between D.M.I. and B.W.0·73, 0·59 between D.M.I. and T.D.N. content, and 0·58 between D.M.I. and crude protein content, D.M.I. was not closely related to dry-matter content (r = 0·30) or crude fibre content (r= 0–01) of the guinea grass.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 71 , Issue 1 , August 1968 , pp. 67 - 71
Copyright
Copyright © Cambridge University Press 1968

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