In vitro Fermentabiliy
and Digestibility of Curcin Containing Ration by Rumen Microbes of Cattle and
Buffalo
M. Afriyanti, K. G. Wiryawan,
and A. S. Tjakradidjaja.
The objective of this study
was to evaluate rumen microbial activity, fermentability and digestibility in
vitro as affected by curcin extract of Jatropha curcas. Curcin, purified
from the seeds of Jatropha curcas, can be used as a cell-killing agent
and catalytically damaging ribosomes in eucaryotic cells. This study was
arranged in a factorial Randomized Block Design (4 x 2 x 2) with three
replications. The first factor was level of curcin
(0%, 1%, 2% and 3% v/w). The second factor was rumen fluid from cattle and
buffaloes and the third factor was incubation period (0 and 3 hour). Data were
analyzed using analysis of variance (ANOVA) and differences between treatments
were determined with contrast orthogonal. The results showed that protozoal
population, total bacterial population, dry matter and organic matter digestibilities
of buffaloes rumen fluid were significantly (P<0 .01="" addition="" affect="" ammonia="" and="" bacterial="" but="" cattle="" concentrations="" conclusion="" curcin="" did="" digestibilities.="" dry="" fluid.="" from="" higher="" i="" in="" level="" matter="" not="" of="" organic="" population="" populations="" protozoal="" reduced="" rumen="" significantly="" than="" that="" the="" those="" vfa="" was="">Jatropha curcas
up to 3% did not have negative
effects on fermentability and digestibility, but curcin was predicted to
inhibit protein synthesis in eucaryotic cells by catalytically damaging
ribosomes of protozoa.
Key words : Jatropha
curcas, curcin, fermentability, digestibility, cattle, buffalo
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