University of Jos Institutional Repository >
Natural Sciences >
Science Laboratory Technology >

Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/1004

Title: Bioconversion of Sweet Potato Leaves to Animal Feed
Authors: Onyimba, I. A.
Ogbonna, A. I.
Egbere, J. O.
Njila, H. L.
Ogbonna, C. I. C.
Keywords: Fermentation
Issue Date: 2015
Publisher: Annual Research & Review in Biology
Series/Report no.: Vol. 8;No.3; Pp 1-6
Abstract: Background: The high cost of conventional animal feed ingredients in Nigeria has made it necessary to search for alternative local sources of feed. Crop residues including sweet potato leaves abound in Nigeria. These have been explored as feed sources. The ability of microorganisms to convert agricultural wastes to more useful products could be harnessed to produce feed from sweet potato leaves which can be obtained in high abundance at low cost. Aim: To examine the possibility of converting sweet potato leaves to animal feed through fermentation with a co-culture of Chaetomium globosum and Saccharomyces cerevisiae. Materials and Methods: Triplicate samples of sweet potato leaves were fermented with a coculture of C. globosum and S. cerevisiae for 21 days at 25±2°C and the effects of fermentatio n on nutrient composition were determined. Fermentation and control samples were analysed for proximate, amino acids, and elemental contents. Results: Crude protein, crude fat and ash contents increased by 97.5%, 265.3% and 12.3%, respectively, while crude fibre and nitrogen free extract values decreased by 22.7% and 61.4% respectively. Energy content increased by 14.5%. The observed changes in the values of these nutritional components were significant (P = 0.05). The percentage dry matter values of all the amino acids analyzed (lysine, histidine, arginine, aspartic acid, threonine, glutamic acid, proline, glycine, alanine, cystine, valine, methionine, isoleucine, leucine tyrosine and phenylalanine) were found to increase, with the contents of seven of the amino acids increasing significantly. Calcium, phosphorus, potassium and magnesium contents increased significantly while those of copper and iron decreased. Conclusion: Fermentation of sweet potato leaves with a co-culture of C. globosum and S. cerevisiae enhanced the feed potential of the leaves. With mineral supplementation, energy enhancement, and further crude fibre reduction, fermented sweet potato leaves could serve as feed for some animals.
URI: http://hdl.handle.net/123456789/1004
ISSN: 2347-565X
Appears in Collections:Science Laboratory Technology

Files in This Item:

File Description SizeFormat
Onyimba832015ARRB19290.pdf209.19 kBAdobe PDFView/Open
View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback