Reference : Influences of feeding behaviour and forage quality on diurnal methane emission dynami...
Scientific congresses and symposiums : Paper published in a book
Life sciences : Agriculture & agronomy
http://hdl.handle.net/2268/215010
Influences of feeding behaviour and forage quality on diurnal methane emission dynamics of grazing cows
English
Blaise, Yannick mailto [Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions animales et nutrition >]
Andriamandroso, Andriamasinoro [Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions animales et nutrition >]
Heinesch, Bernard mailto [Université de Liège > Ingénierie des biosystèmes (Biose) > Biosystems Dynamics and Exchanges >]
Beckers, Yves mailto [Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions animales et nutrition >]
Castro Muñoz, Eloy mailto [Université de Liège - ULiège > > > Doct. sc. agro. & ingé. biol. (Paysage)]
Lebeau, Frédéric mailto [Université de Liège > Ingénierie des biosystèmes (Biose) > Biosystems Dynamics and Exchanges >]
Bindelle, Jérôme mailto [Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions animales et nutrition >]
12-Sep-2017
Precision Livestock Farming ‘17
Berckmans, Daniel
Keita, Keita
759-769
Yes
No
International
ECPLF Nantes
du 12 septembre au 14 septembre 2017
ECPLF
Nantes
France
[en] cattle ; methane emission ; pasture ; grazing ; behaviour ; cow
[en] This study aimed to evaluate diurnal methane (CH4) emission dynamics of grazing cattle and highlight their relationships with biotic factors such as the feeding behaviour as well as seasonal changes in pasture characteristics. Existing methods to assess grazing ruminants’ daily CH4 emissions provide useful insights to investigate mitigation strategies relying on feeding and genetic selection. Nonetheless such methods based on tracer gases (SF6) or feeding bins equipped with sniffers (e.g. GreenFeed) can hardly cover diurnal CH4 emission fluctuations which can influence the accuracy of total CH4 production estimations. Previous studies in barns showed that emission dynamics strongly vary during post feeding time, leading to a possible bias in estimates of daily CH4 emissions as high as 100%. To investigate whether such fluctuations are also taking place on pasture, a portable device was designed with infrared CH4 and CO2 sensors measuring concentrations in the exhaled air at a high sampling rate (4 Hz). Six grazing dry red-pied cows were equipped with the device and motion sensors during runs of 24h to monitor CH4 and CO2 emissions and detect their feeding behaviours (grazing, rumination and other behaviours), respectively. This experiment was performed in summer and fall in order to cover seasonal changes in pasture forage quality. Methane emission was estimated from the CH4:CO2 concentration ratio and the metabolic CO2 production of the cows. As for barn studies, variations were observed in total daily CH4 emission due to the seasons and diurnal variations were also observed due to animal behaviours. Relationships between animal feeding behaviour and CH4 emissions patterns on pasture were also unravelled.
ULg
AgriGES funded by an ARC grant for Concerted Research Actions, financed by Wallonia-Brussels Federation
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/215010

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
ECPLF2017_Blaise yannick methane production grazing cattle.pdfPublisher postprint699.71 kBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.