J. Anim Sci.
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J. Anim Sci. 1975. 41:1487-1495.
© 1975 American Society of Animal Science
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Aerobic Digested Municipal Garbage as a Feedstuff for Cattle1

J. C. Johnson, Jr.2, P. R. Utley2, R. L. Jones3 and W. C. McCormick2

Georgia Coastal Plain Experiment Station, Tifton 31794

Abstract

Diets of similar composition formulated with 17.5% digested garbage product (garbage diet) or 17.5% cottonseed hulls (control diet) were fed to lactating Jersey cows, growing Jersey bull calves, and Charolais crossbred and Hereford steers. Substitution of cottonseed hulls with garbage apparently increased the digestible amounts of crude fiber, nitrogen-free extract, dry matter and energy by 29, 10, 12 and 17% (P<.05). During 42 days of comparison, dry matter intake and milk production from the garbage diet were 42 and 23% less (P<.05) than the 18.9 and 16.8 kg of daily intake and milk production per cow for the control diet. Intake and weight gains by calves during 91 days of comparison averaged 34 and 61% higher (P<.05) for control diet and 6.12 or 6.86 kg of control or garbage diet was required per kilogram of gain. Intake of control diet by beef steers in a two-period, 14 days per period, reversal experiment exceeded that of garbage diet by 29% (P<.05). There was little evidence of animals to increase intake of the garbage diet through adaptation. Analyses for polychlorinated biphenyls (PCB's), chlorinated hydrocarbon pesticides and heavy metals indicated potential problems from PCB's and lead if the digested garbage is fed to cattle.

Footnotes

1 This work was supported in part by a grant from Hercules Incorporated, Environmental Group, Wilmington, Delaware 19899. Appreciation is expressed to B. V. Young for assistance in collection of samples and care of experimental animals.

2 Department of Animal Science.

3 Southern Grain Insects Research Laboratory, A.R.S., U.S.D.A.

4 Hercules Incorporated, Environmental Group, Wilmington, Delaware 19899.






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Copyright © 1975 by the American Society of Animal Science.