IN VITRO FERMENTABILITY, DEGRADABILITY AND MICROBIAL BIOMASS PRODUCT OF COMPLETE RATION CONTAINING A COMBINATION OF FIELD GRASS, CONCENTRATE AND NUTRIENT RICH SUPPLEMENT
Abstract: The objective of
this experiment was to obtain an optimum combination between field
grass,concentrate and Nutrient Rich Supplement (NRS) based on in vitro study
using Hohenheim gas test. Theexperimental diets were: R1 (control diet = 70%
field grass + 30% concentrate), R2 (70% field grass +25% concentrate + 5% NRS),
R3 (70% field grass + 20% concentrate + 10% NRS) and R4 (70% fieldgrass + 15%
concentrate + 15% NRS). A randomized block design with four treatments and
fourreplications was carried out. Buffalo rumen fluid was taken in different
time and was used as block orreplication. Data were analyzed by Analysis of
Variance (ANOVA). Significant differences amongtreatments were determined by
contrast orthogonal. The results showed that total gas production andtotal VFA concentration
were highest (P<0.05) in R4 among the treatments. Addition of 15% NRS
incomplete ration (R4) increased NH3 concentration 10.34%. Addition of 10% NRS
and 15% NRS incomplete ration (R3 and R4) improved the microbial biomass
product compared to control and 5% NRSin complete ration (R1 and R2). Dry
matter (DM) and organic matter (OM) degradability weresignificantly higher
(P<0.01) in 10% NRS and 5% NRS in complete ration (R3 and R2) compared
tocontrol and 15% NRS in complete ration (R1 and R4). It was concluded that
combination between 70%field grass, 20% concentrate and 10% NRS in complete
ration (R3) was more optimal for improving gasproduction, total VFA, NH3
concentration, microbial biomass product, dry matter degradability andorganic
matter degradability, compared to control ration.
Keywords: complete ration. NRS
(Nutrient Rich Supplement). fermentability. degradability. microbial biomass
product
Author: D.S. Wahyuni, A.S.
Tjakradidjaja, S. Suharyono
Journal Code: jppeternakangg090014
