J. Anim Sci.
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J. Anim Sci. 1966. 25:355-359.
© 1966 American Society of Animal Science
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Effects of Different Levels of Cellulose in Purified Diets for Calves1

Gary E. Smith2, W. H. Smith and W. M. Beeson

Purdue University, Lafayette, Indiana

Abstract

Two growth trials, a digestibility trial and rumen fluid analysis studies were conducted to compare calf performance criteria for purified diets with that of control rations.

  1. Calves consuming either the control ration (ground ear corn-Purdue Supplement A, 8:1) or the 25% Solka floe diet had significantly (P<.05) greater gains than calves consuming the 0 or 50% Solka floe diets. Feed intake was greater for the control group than for any of the purified diets, but no differences were noted in feed efficiency.
  2. Calves consuming pelleted diets with 0 or 25% Solka floe made slower gains and consumed less feed than the experimental controls. A highly significant correlation (0.94) resulted between average daily gains and average daily feed intake in all trials.
  3. Digestibilities of dry matter and energy decreased with increasing levels of cellulose in purified diets. Digestibility of crude protein and nitrogen retention were lower for calves on the control ration than for those fed purified diets.
  4. Rumen fluid pH was significantly (P<.05) lower for the calves consuming purified diets than for the controls. No significant treatment differences were noted in molar percent of VFA, total concentration of VFA or acetate-propionate ratios.

Footnotes

1 Department of Animal Sciences Journal Paper No. 2603, Purdue University Agricultural Experiment Station.

2 Present address: Division of Animal Science, University of Wyoming, Laramie, Wyoming.






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Copyright © 1966 by the American Society of Animal Science.