CHEMICAL COMPOSITION AND IN VITRO ORGANIC MATTER DIGESTIBILITY OF MAJOR FEED RESOURCES IN SOUTH WESTERN ETHIOPIA

Tamene Tadesse Tessema, Ajebu Nurfeta, Adugna Tolera

Abstract


Background: Green fodder followed by crop residue, agro-industrial by-products and non-conventional feeds make a large contribution to livestock feeding in Ethiopia. Objective: To identify and estimate chemical composition of major feed resources in south western Ethiopia. Methodology: The study was conducted in the highland, midland and lowlands of south western Ethiopia. A total of 26 indigenous browse and 12 grass species, 3 crop residues, 3 cereal grain mill by-products and 8 non-conventional feeds (2 local brewery by-products, 6 enset, vegetable and fruit by-product) were identified for this study. Triplicate feed samples were collected and assessed for nutrient analysis. Results: Crop residues in highlands and, natural pasture followed by crop residues and browses in midland and lowland agro-ecologies were the dominant feed resources. Most browse species, few indigenous grass species, Colocasia esculenta L., Enset ventricosum (Welw.) Cheesem, Ipomoea batatas L. leaves, and local brewery by-products possessed crude protein (CP) content >110 g kg−1 dry matter (DM). Conversely, CP concentration of Acokanthera schimperi (A.DC.) Benth. and Bridelia micrantha (Hochst.) Baill. across all agro-ecologies, crop residues, grass species in the lowlands, sugar cane leaf, banana peel and cereal grain screenings was <110 g kg−1 DM. Crop residues, Ipomoea batatas L. vine, sugar cane leaf, all grass species except Molinia caerulea L., Setaria verticillata L., Stephania abyssinica (Dill. & A. Rich.) Walp, Paspalum fimbriatum Kunth, have shown neutral detergent fiber value >550 g kg−1 DM. All the tested feed resources but, Ricinus communis L., Acacia oerfota (Forssk.) Schweinf., Rhus natalensis Krauss and Balanites aegyptiaca L. possessed <650 g kg−1 DM in-vitro digestibility. Implications: The present study contributes to the understanding of the browse species, vegetable and local beverage by-products in south western Ethiopia and could be considered as potential source of feed especially during the dry periods. Conclusion: The browse species as well as vegetable and local beverage by-products in south western Ethiopia can be used as potential complementary to poor quality crop residues and most grass species that are prominent in the region.  

Keywords


Indigenous browse species; grass species; supplement; by-product; agro-ecological zone.

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References


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URN: http://www.revista.ccba.uady.mx/urn:ISSN:1870-0462-tsaes.v27i2.51604

DOI: http://dx.doi.org/10.56369/tsaes.5160

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