Bioconversion of Sweet Potato Leaves to Animal Feed

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 Original Research Article 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.

Solid-state Fermentation of Cottonseed Meal with Saccharomyces cerevisiae for Gossypol Reduction and Nutrient Enrichment

“…Microbial degradation of the residues improves the substrate value as animal feed (Pandey, 2003) by increasing the probiotics content in the feed (Dawood and Koshio, 2020). SSF of agro-industrial by-products and plant ingredients reduces these products' crude fibre content and increases the nutrients' bio-availability (Onyimba et al, 2015;Meshram et al, 2018). The present work was conducted to study the utilisation of the CSM as an alternative feed ingredient by SSF to reduce the effect of the anti-nutritional factor gossypol and nutrient enrichment with S. cerevisiae.…”

Pengaruh Tepung Daun Ubi Jalar (Ipomoea batatas L) Fermentasi sebagai Substitusi Jagung Giling Terhadap Persentase Karkas dan Bagian-bagian Karkas

“…Daun ubi jalar merupakan salah satu limbah pertanian yang melimpah dan mudah didapat sehingga penggunaannya sebagai pakan alternatif dapat menjadi solusi untuk menekan biaya ransum. Daun ubi jalar mengandung protein kasar tinggi yaitu 26 -35% dengan kandungan kalsium sebesar 28,44 mg/100 g. Meskipun daun ubi jalar memiliki kandungan gizi yang baik, namun kandungan serat kasarnya yang tinggi berkisar 25,10% dapat menjadi kendala dalam pencernaan dan pemanfaatan nutrisinya oleh hewan ternak [4]. Oleh karena itu, diperlukan upaya untuk mengolah sebelum digunakan sebagai komponen ransum melalui proses fermentasi dengan menggunakan effective microorganism|e 4 (| EM-4).…”

Response of Native Chickens (3-10 Weeks) Fed on Diets Substituated With Graded Levels of Sweet Potato Fermentation

“…Sweet potato waste has limiting factors such as high crude fiber, HCN, oxalic acid, tannins, and phytates which can interfere with the digestive process in chickens. The crude fiber content in sweet potato leaves is also high, ranging from 25.10% [8]. Limiting factors such as antinutrients in sweet potato waste can interfere with the metabolism of native chickens.…”

“…Response of Native Chickens(3)(4)(5)(6)(7)(8)(9)(10) Fed on Diets Substituated With Graded Levels of Sweet Potato Fermentation Sustainable Environment Agricultural Science (SEAS)© All Right Reserved 62…”