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University of Nebraska
Abstract
Twenty-four individually fed pigs were employed in three separate studies to observe the effect of feeding diets in which from 5 to as high as 20 percent of the corn starch in a purified basal ration was replaced by a cellulose product (Ruffex).
Although considerable individual variation was encountered, growth rate and feed utilization appeared to be adversely affected by the higher levels of Ruffex ingested.
Results of digestion trials showed the crude fiber of the diets to be poorly digested at all levels and its inclusion depressed the apparent digestibility of the protein, nitrogen-free extract, and ether extract portions of the diet.
Carcass characteristics could not be correlated with the level of fibrous material fed.
1 Published with the approval of the director as Paper No. 624 Journal Series, Nebraska Agricultural Experiment Station. A part of the thesis presented to the Graduate College of the University of Nebraska, by the senior author in partial fulfillment of the requirements for the degree of Master of Science. Acknowledgment is due C. R. Anderson for the analytical work related to the digestion studies, and to C. H. Adams for the slaughter and subsequent carcass analyses.
2 Present address: Department of Animal Science, Ohio Agricultural Experiment Station, Wooster, Ohio.
3 Present address: Department of Animal Husbandry, University Farm, St. Paul 1, Minnesota.
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