The effect of forage quality on predicted enteric methane production from dairy cows

2010 ◽  
Vol 8 (4) ◽  
pp. 250-256 ◽  
Author(s):  
Mizeck G. G. Chagunda ◽  
Jennifer F. Flockhart ◽  
David J. Roberts
Keyword(s):  
Dairy Cows ◽  
Methane Production ◽  
Forage Quality ◽  
Enteric Methane

scholarly journals Feeding saponin-containing Yucca schidigera and Quillaja saponaria to decrease enteric methane production in dairy cows

2009 ◽  
Vol 92 (6) ◽  
pp. 2809-2821 ◽  
Author(s):  
L. Holtshausen ◽  
A.V. Chaves ◽  
K.A. Beauchemin ◽  
S.M. McGinn ◽  
T.A. McAllister ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Methane Production ◽  
Quillaja Saponaria ◽  
Yucca Schidigera ◽  
Enteric Methane

scholarly journals Forage quality declines with rising temperatures, with implications for livestock production and methane emissions

2017 ◽  
Vol 14 (6) ◽  
pp. 1403-1417 ◽  
Author(s):  
Mark A. Lee ◽  
Aaron P. Davis ◽  
Mizeck G. G. Chagunda ◽  
Pete Manning
Keyword(s):  
Climate Change ◽  
Methane Production ◽  
Nutritive Value ◽  
Elevated Temperatures ◽  
Environmental Changes ◽  
Forage Quality ◽  
Livestock Farming ◽  
Forage Plants ◽  
Model Average ◽  
Enteric Methane

Abstract. Livestock numbers are increasing to supply the growing demand for meat-rich diets. The sustainability of this trend has been questioned, and future environmental changes, such as climate change, may cause some regions to become less suitable for livestock. Livestock and wild herbivores are strongly dependent on the nutritional chemistry of forage plants. Nutrition is positively linked to weight gains, milk production and reproductive success, and nutrition is also a key determinant of enteric methane production. In this meta-analysis, we assessed the effects of growing conditions on forage quality by compiling published measurements of grass nutritive value and combining these data with climatic, edaphic and management information. We found that forage nutritive value was reduced at higher temperatures and increased by nitrogen fertiliser addition, likely driven by a combination of changes to species identity and changes to physiology and phenology. These relationships were combined with multiple published empirical models to estimate forage- and temperature-driven changes to cattle enteric methane production. This suggested a previously undescribed positive climate change feedback, where elevated temperatures reduce grass nutritive value and correspondingly may increase methane production by 0.9 % with a 1 °C temperature rise and 4.5 % with a 5 °C rise (model average), thus creating an additional climate forcing effect. Future methane production increases are expected to be largest in parts of North America, central and eastern Europe and Asia, with the geographical extent of hotspots increasing under a high emissions scenario. These estimates require refinement and a greater knowledge of the abundance, size, feeding regime and location of cattle, and the representation of heat stress should be included in future modelling work. However, our results indicate that the cultivation of more nutritious forage plants and reduced livestock farming in warming regions may reduce this additional source of pastoral greenhouse gas emissions.

scholarly journals Does Dietary Mitigation of Enteric Methane Production Affect Rumen Function and Animal Productivity in Dairy Cows?

PLoS ONE ◽  
2015 ◽  
Vol 10 (10) ◽  
pp. e0140282 ◽  
Author(s):  
Jolien B. Veneman ◽  
Stefan Muetzel ◽  
Kenton J. Hart ◽  
Catherine L. Faulkner ◽  
Jon M. Moorby ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Methane Production ◽  
Enteric Methane

scholarly journals Differential rumination, intake, and enteric methane production of dairy cows in a pasture-based automatic milking system

2015 ◽  
Vol 98 (10) ◽  
pp. 7248-7263 ◽  
Author(s):  
L.J. Watt ◽  
C.E.F. Clark ◽  
G.L. Krebs ◽  
C.E. Petzel ◽  
S. Nielsen ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Methane Production ◽  
Enteric Methane ◽  
Automatic Milking System ◽  
Automatic Milking

scholarly journals Measurement of Enteric Methane Emissions by the SF6 Technique Is Not Affected by Ambient Weather Conditions

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 528
Author(s):  
Peter J. Moate ◽  
Jennie E. Pryce ◽  
Leah C. Marett ◽  
Josie B. Garner ◽  
Matthew H. Deighton ◽  
...  
Keyword(s):  
Wind Speed ◽  
Relative Humidity ◽  
Dairy Cows ◽  
Methane Production ◽  
Daily Rainfall ◽  
Weather Conditions ◽  
Methane Yield ◽  
Weather Factors ◽  
Ambient Temperatures ◽  
Enteric Methane

Despite the fact that the sulphur hexafluoride (SF6) tracer technique was developed over 25 years ago to measure methane production from grazing and non-housed animals, no studies have specifically investigated whether ambient wind speed, temperature, relative humidity and rainfall influence the accuracy of the method. The aim of this research was to investigate how these weather factors influence the measurement of enteric methane production by the SF6 technique. Six different cohorts of dairy cows (40 per cohort) were kept outdoors and fed a common diet during spring in 3 consecutive years. Methane production from individual cows was measured daily over the last 5 days of each 32-day period. An automated weather station measured air temperature, wind speed, relative humidity and rainfall every 10 min. Regression analyses were used to relate the average daily wind speed, average daily temperature, average daily relative humidity and total daily rainfall measurements to dry matter intake, average daily methane production and methane yield of each cohort of cows. It was concluded that the modified SF6 technique can be used outdoors during a range of wind speeds, ambient temperatures, relative humidities and rainfall conditions without causing a significant effect on the measurement of methane production or methane yield of dairy cows.

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