Journal
FERMENTATION-BASEL
Volume 8, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/fermentation8010008
Keywords
phytonutrients; rumen fermentation; methane; Mitragyna speciosa Korth
Funding
- Program Management Unit on Area Based Development-PMU-A [A13F640053]
- Officer of National Higher Education Science Research and Innovation Policy Council, Thailand
- Research Program on the Research and Development of Winged Bean Root Utilization as Ruminant Feed
- Increase Production Efficiency and Meat Quality of Native Beef and Buffalo Research Group from KKU
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The objective of this research was to evaluate the effects of adding different levels of Mitragyna speciosa Korth leaves powder (MSLP) to rations with different roughage to concentrate ratios on nutrient digestibility, rumen fermentation, microbial population, and methane production. The results showed that adding MSLP improved nutrient degradability and rumen fermentation properties while reducing methane production.
The objective of the research was to evaluate the different levels of Mitragyna speciosa Korth leaves powder (MSLP) added to rations with 60:40 or 40:60 roughage to a concentrate (R:C ratio) on in vitro nutrient digestibility, rumen fermentation characteristics, microbial population, and methane (CH4) production. The treatments were arranged according to a 2 x 8 factorial arrangement in a completely randomized design. The two factors contain the R:C ratio (60:40 and 40:60) and the levels of MSLP addition (0, 1, 2, 3, 4, 5, 6, and 7% of the total substrate). There was no interaction between the R:C ratio and MSLP supplementation on gas production kinetics, ammonia nitrogen (NH3-N), and microbial populations. The gas production rate constant for the insoluble fraction (c) was increased by the R:C ratio at (40:60), whilst there was no difference obtained among treatments for cumulative gas production, whilst the gas production rate constant for the insoluble fraction (c) was increased by the R:C ratio at 40:60. The concentration of NH3-N was influenced by the R:C ratio and MSLP addition both at 4 and 8 h after incubation. In vitro dry matter degradability (IVDMD) and organic matter degradability (IVOMD) were significantly improved by the R:C ratio and supplementation of MSLP at 12 h. Increasing the R:C ratio and MSLP concentrations increased total volatile fatty acid (VFA) and propionic acid (C-3) concentrations while decreasing acetic acid (C-2) and butyric acid (C-4) concentrations; thus, the C-2:C-3 ratio was reduced. MSLP addition reduced protozoa and methanogen populations (p < 0.05). The calculated CH4 production was decreased (p < 0.05) by the R:C ratios at 40:60 and supplementation of MSLP. Finally, the addition of MSLP as a phytonutrient may improve nutrient degradability and rumen fermentation properties while decreasing protozoa, methanogen population, and CH4 production.
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