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An in vitro Evaluation of Pleurotus ostreatus EM-1-modified Maize (Zea mays) Cob as a Non-conventional Energy Source for Livestock in Ghana

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Author(s): N.A. Adamafio | D.A. Annan | V. Amarh | G.O. Nkansah | M. Obodai

Journal: Journal of Biological Sciences
ISSN 1727-3048

Volume: 11;
Issue: 7;
Start page: 442;
Date: 2011;
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Keywords: animal feed | maize cob | biodegradability | cellulose | Mushroom | delignification

ABSTRACT
Treatment with Pleurotus ostreatus strain EM-1 recently has been proposed as an effective means of transforming maize cob into nutritive animal feed for livestock production in the West African sub-region. This study compares P. ostreatus strain EM-1-treated maize cob with peels of cassava and plantain, widely-accepted complementary feedstuffs in West Africa, in terms of in vitro biodegradability and composition. Subjection of milled maize cob samples to solid state fermentation by P. ostreatus strain EM-1, until complete mycelial colonization, resulted in an increase of 107.3% in cell extractives and a 41.2% reduction in lignin content. The cellulose content of the treated maize cob exceeded that of plantain peel and cassava peel by 44.9 and 71.2%, respectively, while protein and lipid content did not differ significantly from mean values obtained for cassava peel. Cellulosic sugar production from treated maize cob, measured at 37C for up to 3 h in the presence or absence of 0.05 U mL-1 cellulase, surpassed that of cassava peel by 52.3% (p
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