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All Journal MEDIA PETERNAKAN - Journal of Animal Science and Technology
K Becker
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Agriculture, Biological Sciences & Forestry

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Emisi Metana dan Fermentasi Rumen in Vitro Ransum Hay yang Mengandung Tanin Murni pada Konsentrasi Rendah A Jayanegara; H. P S Makkar; K Becker
Media Peternakan Vol. 32 No. 3 (2009): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

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Abstract

This experiment was conducted to study the effects of addition of purified tannins at low concentration into hay diet on in vitro gas emission and rumen fermentation. Treatments consisted of: P0 (control hay), P1 (hay + 0.5 mg chestnut tannin/ml of incubation medium), P2 (hay + 0.5 mg/ml mimosa tannin), P3 (hay + 0.5 mg/ml quebracho tannin) and P4 (hay + 0.5 mg/ml sumach tannin). Variables measured were gas production kinetics, organic matter digestibility (OMD), methane production, expressed as percent methane in total gas and methane production per unit organic matter digested, and volatile fatty acid (VFA) production. The results showed that in most cases tannin addition at 0.5 mg/ml decreased significantly (P < 0.05) total and rate of gas production, OMD, total VFA and iso-VFA. Tannin addition also decreased methane production (P < 0.05). Hydrolysable tannins seemed to have better methane reduction effect than condensed tannins. The best tannin to decrease methane was chestnut tannin, which contained hydrolysable tannins. Present research should be shifted from evaluating only the effect of condensed tannins in reducing methane emission towards some potential hydrolysable tannins since the nature and the toxicity of hydrolysable tannins are quite diverse. Key words: methane, tannin, rumen, in vitro, hay
Kinetika Produksi Gas, Kecernaan Bahan Organik dan Produksi Gas Metana in Vitro pada Hay dan Jerami yang Disuplementasi Hijauan Mengandung Tanin A Jayanegara; A Sofyan; H.P S Makkar; K Becker
Media Peternakan Vol. 32 No. 2 (2009): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

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Abstract

This research was aimed to evaluate supplementation of tannin-containing forages, namely Rhus typhina and Salix alba into hay and straw diets on rumen fermentation parameters in vitro, especially on methane production. Supplementation was applied at 30% dry matter replacement from hay and straw diets. Treatments consisted of: H (hay), J (straw), RT (R. typhina), SA (S. alba), H:RT (hay:R. typhina, 70:30), H:SA (hay:S. alba, 70:30), J:RT (straw:R. typhina, 70:30), and J:SA (straw:S. alba, 70:30). Incubation was applied using Hohenheim gas production method for 24 hours. Variables measured after incubation were cumulative and kinetics of gas production, methane emission and organic matter digestibility. The results showed that supplementation of R. typhina and S. alba decreased (P < 0.05) percentage of methane production by 11.2% and 4.3% when added to hay, respectively; while it decreased (P < 0,05) percentage methane production by 15.8% and 6.1% when added to straw, respectively. Additionally, supplementation of these tannin-containing forages significantly increased (P < 0.05) organic matter digestibility of hay and straw. It was concluded that supplementation of tannin-containing forages could strategically be used to decrease methane emission from rumen fermentation in vitro, and at the same time increase the quality of basal diets. Key words: gas production, digestibility, tannin, methane, forage
Co-Authors A Sofyan Anuraga Jayanegara H. P S Makkar H.P S Makkar