Meta-analysis of calorimeter data to establish relationships between methane and carbon dioxide emissions or oxygen consumption for dairy cattle

Animal Nutrition
Aurélie Aubry, Tianhai Yan

Abstract

Recent developments suggest the use of other gases such as carbon dioxide (CO2) to estimate methane (CH4) emissions from livestock, yet little information is available on the relationship between these two gases for a wide range of animals. A large respiration calorimeter dataset with dairy cattle (n = 987 from 30 experiments) was used to investigate relationships between CH4 and CO2 production and oxygen (O2) consumption and to assess whether the predictive power of these relationships could be improved by taking into account some dietary variables, including forage proportion, fibre and metabolisable energy concentrations. The animals were of various physiological states (young n = 60, dry cows n = 116 and lactating cows n = 811) and breeds (Holstein-Friesian cows n = 876, Jersey × Holstein-Friesian n = 47, Norwegian n = 50 and Norwegian × Holstein-Friesian n = 14). The animals were offered forage as a sole diet or a mixture of forage and concentrate (forage proportion ranging from 10 to 100%, dry matter basis). Data were analysed using a series of mixed models. There was a strong positive linear relationship between CH4 and CO2, and observations within an experiment were very predictable (adjusted R 2 = 0.93). There was no ...Continue Reading

References

Aug 1, 1992·Journal of Dairy Science·J B Holter, A J Young
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Jan 19, 2006·Environmental Monitoring and Assessment·I K HindrichsenM Kreuzer
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Jan 1, 2012·Animals : an Open Access Journal From MDPI·Ida M L D StormJørgen Madsen

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Citations

Feb 7, 2020·Animals : an Open Access Journal From MDPI·Octavio Alonso Castelán OrtegaMaría Fernanda Vázquez Carrillo
Nov 3, 2020·Journal of Dairy Science·Degong PangSophie Krizsan

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