scholarly journals Effect of condensed tannins on methane emission and ruminal microbial populations

2013 ◽  
pp. 501-502 ◽  
Author(s):  
M. Rira ◽  
C. Marie-Magdeleine ◽  
H. Archimède ◽  
D. P. Morgavi ◽  
M. Doreau
Keyword(s):  
Methane Emission ◽  
Condensed Tannins ◽  
Microbial Populations ◽  
Ruminal Microbial Populations

Potential of walnut (Juglans regia) leave ethanolic extract to modify ruminal fermentation, microbial populations and mitigate methane emission

2020 ◽  
Vol 60 (9) ◽  
pp. 1189
Author(s):  
M. Sahebi Ala ◽  
R. Pirmohammadi ◽  
H. Khalilvandi-Behroozyar ◽  
E. Anassori
Keyword(s):  
Methane Emission ◽  
Rumen Fluid ◽  
Juglans Regia ◽  
Ethanolic Extract ◽  
Barley Grain ◽  
Gas Production ◽  
Microbial Populations ◽  
In Vitro Digestibility ◽  
Ruminal Fermentation

Series of in vitro trials were conducted to evaluate dose–response effects of walnut leaf ethanolic extract (WLEE) on ruminal fermentation, microbial populations, mitigation of methane emission and acidosis prevention. The treatments were conducted according to a 5 × 3 factorial arrangement in a completely randomised design formulated to contain corn (corn-based diet, CBD) and barley grain (barley-based diet, BBD), or equal amounts of barley and corn (barley and corn diet, BCD), consisting of either basal diets alone (0) or basal diets with 250, 500, 750 or 1000 µL of WLEE (W0, W250, W500, W750 and W1000 respectively) per litre of buffered rumen fluid. Three fistulated cows fed diets containing alfalfa hay and concentrate mixes (same as the control diet) plus minerals and vitamins were used for collection of ruminal fluid. The asymptote of gas production and methane emission was decreased and lag time increased in a linear and quadratic manner with an increasing dose of WLEE (P < 0.001). However, gas production rate reduced linearly as WLEE dose increased (P < 0.001). Methane production was significantly reduced linearly (L) and quadratically (Q) when walnut ethanolic extract was increased from 250 to 1000 μL/L (L and Q; P < 0.001). The addition of WLEE significantly altered the volatile fatty acid profile in comparison to control, reducing the molar proportion of acetate and increasing that of propionate (P < 0.001), and also decreased the ammonia-N concentration (L, P < 0.001). Dry-matter and organic-matter in vitro digestibility coefficients were negatively affected by WLEE supplementation (L and Q; P < 0.001). Although anti-acidosis potential of WLEE was significantly lower than that of monensin, W1000 increased medium culture pH compared with uncontrolled acidosis and the lower doses of WLEE. The populations of Fibrobacter succinogenes, Ruminococcus flavefaciens and R. albus were significantly reduced by WLEE, although to different magnitudes, depending on the corn and barley grain proportions in the diet. Results of the present study indicated that increasing addition levels of WLEE have noticeable effects on rumen microbial population and fermentation characteristics. It can be concluded that WLEE can potentially be used to manipulate ruminal fermentation patterns.

Condensed Tannins in Forage Legumes

EDIS ◽  
2020 ◽  
Vol 2020 (1) ◽  
pp. 4
Author(s):  
Flávia Van Cleef ◽  
Jose Dubeux
Keyword(s):  
Methane Emission ◽  
Condensed Tannins ◽  
Livestock Production ◽  
Forage Legumes ◽  
Negative Effects ◽  
Health And Nutrition ◽  
Potential Benefits ◽  
Livestock Health

The use of tannin-containing forages has received attention from researchers around the globe because of potential benefits of condensed tannins to livestock health and nutrition as well as possibilities to reduce methane emission. This new 4-page publication of the UF/IFAS Agronomy Department targets two audiences: Extension faculty who need information on potential benefits and negative effects of condensed tannins to livestock production, and producers who intend to feed tannin-containing forages in their operation. Written by Flavia van Cleef and Jose Dubeux.https://edis.ifas.ufl.edu/ag440

Methane emission by goats consuming diets with different levels of condensed tannins from lespedeza

2008 ◽  
Vol 144 (3-4) ◽  
pp. 212-227 ◽  
Author(s):  
G. Animut ◽  
R. Puchala ◽  
A.L. Goetsch ◽  
A.K. Patra ◽  
T. Sahlu ◽  
...  
Keyword(s):  
Methane Emission ◽  
Condensed Tannins ◽  
Different Levels
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