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P. Yuliana
Faculty of Animal Science, Bogor Agricultural University, Jl. Agatis, Darmaga Campus, Bogor 16680
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences

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Journal : Journal of the Indonesian Tropical Animal Agriculture

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Effect of napier grass supplemented with Gliricidia sepium, Sapindus rarak or Hibiscus rosa-sinensis on in vitro rumen fermentation profiles and methanogenesis Yuliana, P.; Laconi, E. B.; Jayanegara, A.; Achmadi, S. S.; Samsudin, A. A.
Journal of the Indonesian Tropical Animal Agriculture Vol 44, No 2 (2019): June
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.44.2.167-176

Abstract

This study examined the supplementation effects of gliricidia leaves(GL, Gliricidia sepium), lerak fruit(LF, Sapindus rarak), or hibiscusleaves(HL, Hibiscusrosa-sinensis) on in vitro rumen fermentation and methanogenesis and made a comparisonwith the Napier grass (NG, Pennisetum purpureum) grass. In vitro rumen fermentation was designed according to a randomized complete block design with four replications and seven treatments: NG, GL, LF, HL, NG 70% + GL 30%, NG 70% + LF 30%and NG 70% + HL 30%. The generated data were subjected to analysis of variance (ANOVA) with Duncan’s multiple range test and compared among treatment means.Addition of a plant containing saponin such as LF or HL to NG did not alter gas production after 24 and 48 h of incubation period in comparison to NG alone.The HLalone or blended with NGproduced the highest IVOMDduring the fermentation processas compared to other treatments (P<0.05). Adding LF supplement either singly or in combination significantly (P<0.05) reduced methane production in terms of %TVFA as compared to NG. Supplementation of LF plants has shifted VFA proportion towards more propionate and less acetate. The microbial population of LF, whether single or in combination had a tendency to reduce the rumen protozoa population but had no effect on methanogen population. It can be concluded that utilization of saponin-rich materials is particularly beneficial for reducing ruminal methane emission.
EXTRACTION OF TANNINS AND SAPONINS FROM PLANT SOURCES AND THEIR EFFECTS ON In vitro METHANOGENESIS AND RUMEN FERMENTATION Yuliana, P.; Laconi, E.B.; Wina, E.; Jayanegara, A.
Journal of the Indonesian Tropical Animal Agriculture Vol 39, No 2 (2014)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.39.2.91-97

Abstract

This study was aimed to extract tannins from Swietenia mahagony and saponins from Sapindusrarak by using different solvents, and to test their extracts on in vitro rumen fermentation andmethanogenesis. Solvents used for extraction were water, methanol, acetone and their combinations.Tannin and saponin extracts were added into each incubation bottle containing Brachiaria humidicolagrass and Indigofera sp. legume (1:1 w/w) according to the following treatments (in four replicates): R1:control substrate, R2: R1 + 0.5 mg/ml tannin extract, R3: R1 + 1 mg/mL tannin extract, R4: R1 + 0.5mg/mL saponin extract, R5: R1 + 1 mg/mL saponin extract, R6: R1 + 0.5 mg/mL tannin extract + 0.5mg/mL saponin extract, and R7: R1 + 1 mg/mL tannin extract + 1 mg/mL saponin extract. Resultsrevealed that 75% water + 25% methanol was the best solvent to extract tannins from S. mahagonywhereas 100% methanol was the best to extract saponins from S. rarak. The highest gas production andthe lowest methane emission were obtained in R7. It can be concluded that combination of tannin andsaponin extracts were potential in mitigating ruminal methane emissions.
Co-Authors Achmadi, S. S. Anuraga Jayanegara E. B. Laconi, E. B. E. Wina E.B. Laconi Samsudin, A. A.