Effects of grass silage quality and level of feed intake on enteric methane production in lactating dairy cows1

2017 ◽  
Vol 95 (8) ◽  
pp. 3687-3699 ◽  
Author(s):  
D. Warner ◽  
A. Bannink ◽  
B. Hatew ◽  
H. van Laar ◽  
J. Dijkstra
Keyword(s):  
Feed Intake ◽  
Methane Production ◽  
Grass Silage ◽  
Enteric Methane ◽  
Silage Quality

Effects of grass silage quality and level of feed intake on enteric methane production in lactating dairy cows

2017 ◽  
Vol 95 (8) ◽  
pp. 3687 ◽  
Author(s):  
D. Warner ◽  
A. Bannink ◽  
B. Hatew ◽  
H. van Laar ◽  
J. Dijkstra
Keyword(s):  
Dairy Cows ◽  
Feed Intake ◽  
Methane Production ◽  
Grass Silage ◽  
Lactating Dairy Cows ◽  
Enteric Methane ◽  
Silage Quality

Effects of varying silage quality for dry cows on feed intake, weight change and performance in the subsequent lactation

2000 ◽  
Vol 2000 ◽  
pp. 142-142
Author(s):  
R. J. Dewhurst ◽  
D. W. R. Davies ◽  
W. J. Fisher
Keyword(s):  
Milk Production ◽  
Metabolic Activity ◽  
Feed Intake ◽  
Nutrient Supply ◽  
Current Experiment ◽  
High Quality ◽  
Grass Silage ◽  
Silage Quality ◽  
Voluntary Intake ◽  
And Performance

Earlier studies (e.g. Dewhurst et al., 1996, 1999) have shown marked declines in forage voluntary intake as calving approaches. The resultant reduction in nutrient supply may compromise performance in the next lactation, because it coincides with a period of intense metabolic activity in preparation for the next lactation. Feeding concentrates to dry cows did not overcome this problem (Dewhurst et al., 1999). The objective of the current experiment was to investigate alternative dry cow strategies, using only high-quality grass silage, to minimise the severity and consequences for subsequent milk production of the reduction in nutrient supply in this period.

The effect of grass silage quality and supplementary concentrate levels on feed intake and fattening performance of crossbred steers

2016 ◽  
Author(s):  
Iwona Wyżlic ◽  
Jadwiga Wierzbowska ◽  
Cezary Purwin ◽  
Krzysztof Lipiński ◽  
Jacek P. Michalski ◽  
...  
Keyword(s):  
Feed Intake ◽  
Fattening Performance ◽  
Grass Silage ◽  
Silage Quality

Use of infrared thermography to estimate enteric methane production in dairy heifers

2021 ◽  
pp. 1-9
Author(s):  
Alexandre M. Gabbi ◽  
Giovani J. Kolling ◽  
Vivian Fischer ◽  
Luiz Gustavo R. Pereira ◽  
Thierry R. Tomich ◽  
...  
Keyword(s):  
Infrared Thermography ◽  
Methane Production ◽  
Dairy Heifers ◽  
Enteric Methane

scholarly journals Reducing enteric methane production from buffalo (Bubalus bubalis) by garlic oil supplementation in in vitro rumen fermentation system

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Avijit Dey ◽  
Shyam Sundar Paul ◽  
Puran Chand Lailer ◽  
Satbir Singh Dahiya
Keyword(s):  
Environmental Pollution ◽  
Methane Production ◽  
Rumen Fluid ◽  
Bubalus Bubalis ◽  
Rumen Fermentation ◽  
Acetyl Esterase ◽  
Garlic Oil ◽  
Enteric Methane ◽  
In Vitro Rumen Fermentation

AbstractEnteric methane production contributes significantly to the greenhouse gas emission globally. Although, buffaloes are integral part of livestock production in Asian countries, contributing milk, meat and draft power, the contribution of enteric methane to environmental pollution attracts attention. The present study investigated the efficacy of garlic (Allium sativum) oil in reducing enteric methane production from buffaloes (Bubalus bubalis) by in vitro rumen fermentation. Garlic oil (GOL) was tested at four concentrations [0 (Control), 33.33 µl (GOL-1), 83.33 µl (GOL-2) and 166.66 µl (GOL-3) per litre of buffered rumen fluid] in 100-ml graduated glass syringes and incubated at 39℃ for 24 h for in vitro rumen fermentation study. Supplementation of GOL-1 increased (p < 0.05) total gas production in comparison with GOL-3; however, it remained comparable (p > 0.05) with control and GOL-2. Graded doses of garlic oil inclusions reduced (p < 0.001) methane concentration (%) in total gas and total methane production (ml/g DM), irrespective of concentrations. The feed degradability, volatile fatty acids and microbial biomass production (MBP) were not affected (p > 0.05) by GOL-1, but these tended to decrease in GOL-2 with marked reduction (p < 0.01) in GOL-3. The decrease (p < 0.01) in NH3–N concentration in fermentation fluid in the presence of garlic oil, irrespective of concentration, suggests reduced deamination by inhibiting rumen proteolytic bacterial population. The activities of ruminal fibrolytic enzymes (CMCase, xylanase, β-glucosidase, acetyl esterase) were not affected by lower dose (GOL-1) of garlic oil; however, reduction (p < 0.05) of these enzymes activity in rumen liquor was evident at higher doses (GOL-2 and GOL-3) of supplementation. This study shows positive impact of garlic oil supplementation at low dose (33.33 µl/l of rumen fluid) in reducing enteric methane production, thereby, abatement of environmental pollution without affecting feed digestibility.

78 Predicting enteric methane production from the rumen microbial composition of beef steers fed either a high concentrate or cut grass diet

2021 ◽  
Vol 12 (1) ◽  
pp. 57
Author(s):  
Gemma Miller ◽  
Marc Auffret ◽  
Rainer Roehe ◽  
Holly Nisbet ◽  
Marina Martínez-Alvaro
Keyword(s):  
Methane Production ◽  
Beef Steers ◽  
Microbial Composition ◽  
Enteric Methane
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