Influence of Exogenous Enzymes on In Vitro Ruminal Degradation of Ensiled Rice Straw with DDGS
Gado, Hany; AZM Salem; LM Camacho; MMY Elghandour; MC Salazar;
Abstract
The objective of this study was to determine the effect of exogenous enzymes (ENZ) on nutrient
profile and ruminal degradability of rice straw (RS), distillers dried grains with solubles (DDGS) and
their mixture (RS with 10% DDGS). Ten samples of each fibrous feed were mixed with ZAD® (mixture
of cellulases, xylanaxes, proteases and alpha amylase). ENZ was added at 0, 1 and 3 L to one ton of the
fibrous feeds and the mixture was ensiled for 30 days. Feed samples were incubated for 72 h in rumen
liquor of sheep to determine the degradability of DM, NDF and ADF. Pretreatment of feeds and their
mixture (RS and DDGS) with ENZ at 3 L were increased (P<0.01) the degradation of NDF and ADF.
Degradation fractions (a, b, (a+b) and c) of feeds were improved (P<0.01) at 3 L of ENZ, except the c
of NDF and ADF of RS which were not affected by ENZ treatment. The results suggested a strong
potential in improving digestion of RS and DDGS as well as their mixture with the pretreatment with
ENZ. The dose of 3 L/ton of fibrous product improved the DM, NDF and ADF degradability.
profile and ruminal degradability of rice straw (RS), distillers dried grains with solubles (DDGS) and
their mixture (RS with 10% DDGS). Ten samples of each fibrous feed were mixed with ZAD® (mixture
of cellulases, xylanaxes, proteases and alpha amylase). ENZ was added at 0, 1 and 3 L to one ton of the
fibrous feeds and the mixture was ensiled for 30 days. Feed samples were incubated for 72 h in rumen
liquor of sheep to determine the degradability of DM, NDF and ADF. Pretreatment of feeds and their
mixture (RS and DDGS) with ENZ at 3 L were increased (P<0.01) the degradation of NDF and ADF.
Degradation fractions (a, b, (a+b) and c) of feeds were improved (P<0.01) at 3 L of ENZ, except the c
of NDF and ADF of RS which were not affected by ENZ treatment. The results suggested a strong
potential in improving digestion of RS and DDGS as well as their mixture with the pretreatment with
ENZ. The dose of 3 L/ton of fibrous product improved the DM, NDF and ADF degradability.
Other data
| Title | Influence of Exogenous Enzymes on In Vitro Ruminal Degradation of Ensiled Rice Straw with DDGS | Authors | Gado, Hany ; AZM Salem ; LM Camacho ; MMY Elghandour ; MC Salazar | Keywords | DDGS;Degradability;Exogenous enzymes;Fiber fractions;Rice straw | Issue Date | 1-Sep-2013 | Publisher | Animal Nutrition and Feed Technology |
Attached Files
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| Influence of Exogenous Enzymes on In Vitro Ruminal Degradation of Ensiled Rice Straw with DDGS.pdf | 190.88 kB | Adobe PDF | Request a copy |
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