Evaluating Wood Pulp as Feedstuff for Ruminants and Substrate for Aspergillus Fumigatus
- 1 July 1973
- journal article
- Published by Oxford University Press (OUP) in Journal of Animal Science
- Vol. 37 (1) , 179-182
- https://doi.org/10.2527/jas1973.371179x
Abstract
TEN chemical pulps and two mechanical pulps were analyzed for Klason lignin, total carbohydrate, ash, in vitro rumen dry matter digestibility and single-cell protein growth by Aspergillus fumigatus. The pulp fines from each pulp that passed through a 100-mesh wet screening were also analyzed. In vitro digestibility ranged from 67% to 98% for the chemical pulps and pulp fines and from 0% to 7% for the mechanical pulps and pulp fines. Aspergillus fumigatus produced fungal growth with 14.5% to 30% crude protein in 4 days at 35 C when grown on chemical wood pulps from hardwood species with lignin content ranging from 25% to less than 0.1%. The fungus grew only on softwood pulps that had low-lignin content; it did not grow on the mechanical pulps. Copyright © 1973. American Society of Animal Science . Copyright 1973 by American Society of Animal Science.Keywords
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