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The effect of cellulases and xylanases on the in vitro digestibility of asparagus browse (Asparagus officinalis), corn stover (Zea mays) and peanut hulls (Arachis hypogaea) in …

Abstract:

Crop residues play an important role in animal production worldwide. Improving the nutritional potential of low-quality options with fibrolytic enzymes would improve forage digestibility and utilization. Using an in vitro method, it was evaluated the effect of Cellulases (EC: 3.2.1.4) and Xylanases (EC: 3.2.1.8) applied at 4 levels: 0 (control), 2,000; 4,000 and 8,000 UI.kg-1 MS in Corn stover (CS), Asparagus browse (AB) and Peanut hulls (PH). When applying Cellulases to CS, the in vitro digestibility of dry matter (IVDMD) and the in vitro digestibility of neutral detergent fiber (IVNDFD) were higher (P < 0.001) than the control group (63.7 vs. for 61.8% and 51.9 vs. 50.1%). Similar effects were found with Xylanases (64.1 vs. for 61.8% and 53.0 vs. 51.6%). The IVDMD and IVNDFD of AB were not affected by the application of Cellulases or Xylanases. In the case of PH, the application of Cellulases or Xylanases improved …