Treatment of Crop Residues Using a Noble Thermostatic Bacterial Isolate to Improve Feed Utilization by Ruminants

Abstract

Most researches in modification of nutrient values of crop residue by using biological methods have primarily focused on treatment using fungi. The use of bacterial isolates is yet hardly assessed to isolate novels from different sources. Some reports indicated the lignocellulolytic activity of thermostatic bacteria and their potential to produce in shorter time. In this context, the present study was focused on isolation of novel thermostatic bacteria from different sources to improve the nutritional value of crop residues thereby utilization of ruminants. For biological treatment, four bacteria were isolated from different sources and one noble isolate was selected. Crop residues such as sugarcane baggase (SB), corn straw (CS) and teff straw (Eragrostis tef) (TS) were used and fermented with isolate HSW. The amount of reducing sugar, % of saccharification, crude protein, % lignin loss and % in vitro digestibility (IVDMD) were measured and statistically analyzed. While the maximum amount of reducing sugar (531 mg/100 ml), % of saccharification (477.9 mg/100 ml), % of lignin loss (38.80%) and % of IVDMD (47.69%) were reported in SB treated with HSW. The amount of reducing sugar and % saccharification of SB was statistically significant (p<0.005). CS treated with bacterial strain were responsible for accumulation of high crude protein (36.5 mg/100 gm) with significant value of (p<0.005). The availability of crop residues such as SB, CS and TS fermentation with noble thermostatic bacterial isolate HSW could be an option in animal feed formulation. Thermostatic bacteria can be considered as a competent organism for biological treatment.  

Keywords: Biological treatment, cellulose, crop residue, reducing sugar, ruminant, thermostatic bacteria

Cite this Article

Anteneh Getachew and Andualem Birhane. Treatment of Crop Residues Using a Noble Thermostatic Bacterial Isolate to Improve Feed Utilization by Ruminants. Research & Reviews: A Journal of Biotechnology. 2016; 6(1): 34–41p.