J. Anim Sci.
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J. Anim Sci. 1964. 23:960-962.
© 1964 American Society of Animal Science
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Enzyme Supplements and Digestibility of Protein and Energy in Rations High in Dried Citrus Pulp1

P. A. Van Walleghem, C. B. Ammerman, C. F. Chicco, J. E. Moore and L. R. Arrington2

Florida Agricultural Experiment Station,,3 Gainesville

Abstract

Two conventional digestibility trials were conducted involving five commercial dietary enzymes, as supplements to yearling wethers. The ration used in the first experiment contained approximately 6.5% protein with 70.0% of the total protein contributed by citrus pulp. In the second experiment the protein was increased to 12.0% by the addition of soybean meal, with 38.0% of the protein supplied by dried citrus pulp.

In experiment I great variability was obtained in the individual protein and energy digestion coefficients for lambs, regardless of treatment. This variability was perhaps due to inconsistent feed consumption. Average digestion coefficients by treatment for protein and energy ranged from 50.5 to 61.2 and from 79.0 to 82.8, respectively, with no suggestion of a significant effect of the enzymes. In the second experiment the increased protein level in the ration eliminated the inconsistency in feed intake. Average digestion coefficients were consistent throughout the different collections and for the different treatments. The coefficients for protein and energy ranged from 74.4 to 77.8 and from 79.7 to 81.3, respectively, with no suggestion of a significant treatment effect.

Footnotes

1 Florida Agricultural Experiment Stations, Journal Series No. 1864.

2 The authors wish to acknowledge the Citrus Processors Association, Winter Haven, Fla., for funds in support of this study and P.A. Hicks for his technical assistance.

3 Department of Animal Science.






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