Comparison of methods to determine methane emissions from dairy cows in farm conditions

Journal of Dairy Science
P HuhtanenS Zimmerman

Abstract

Nutritional and animal-selection strategies to mitigate enteric methane (CH4) depend on accurate, cost-effective methods to determine emissions from a large number of animals. The objective of the present study was to compare 2 spot-sampling methods to determine CH4 emissions from dairy cows, using gas quantification equipment installed in concentrate feeders or automatic milking stalls. In the first method (sniffer method), CH4 and carbon dioxide (CO2) concentrations were measured in close proximity to the muzzle of the animal, and average CH4 concentrations or CH4/CO2 ratio was calculated. In the second method (flux method), measurement of CH4 and CO2 concentration was combined with an active airflow inside the feed troughs for capture of emitted gas and measurements of CH4 and CO2 fluxes. A muzzle sensor was used allowing data to be filtered when the muzzle was not near the sampling inlet. In a laboratory study, a model cow head was built that emitted CO2 at a constant rate. It was found that CO2 concentrations using the sniffer method decreased up to 39% when the distance of the muzzle from the sampling inlet increased to 30cm, but no muzzle-position effects were observed for the flux method. The methods were compared in 2 ...Continue Reading

References

Jan 1, 1965·The British Journal of Nutrition·K L Blaxter, J L Clapperton
Jan 1, 1996·Pharmacology & Therapeutics·UNKNOWN International Expert Panel on Carcinogen Risk Assessment
Feb 1, 1994·Environmental Science & Technology·K JohnsonP Zimmerman
Feb 14, 2013·Journal of Dairy Science·M Ramin, P Huhtanen
Jun 14, 2013·Animal : an International Journal of Animal Bioscience·C S Pinares-PatiñoJ C McEwan
Jun 14, 2013·Animal : an International Journal of Animal Bioscience·R S Hegarty
Jun 20, 2014·Animal : an International Journal of Animal Bioscience·M J BellP C Garnsworthy

❮ Previous
Next ❯

Citations

Nov 26, 2015·Trends in Biotechnology·Julian HillKourosh Kalantar-Zadeh
Sep 27, 2018·Animal : an International Journal of Animal Bioscience·P LøvendahlP Lund
Jul 13, 2019·Journal of Animal Physiology and Animal Nutrition·S Leanne DillardKathy J Soder
Oct 17, 2019·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·Alejandro Saborío-MonteroOscar González-Recio
Dec 12, 2019·Royal Society Open Science·Rebecca DanielssonTomas Roslin
Jun 12, 2020·Animals : an Open Access Journal From MDPI·Yiguang ZhaoBenhai Xiong
Jun 26, 2020·Animal : an International Journal of Animal Bioscience·J Lassen, G F Difford
Apr 10, 2017·Journal of Dairy Science·E H Cabezas-GarciaP Huhtanen
Oct 4, 2016·Journal of Animal Science·W Powers, M Capelari
May 19, 2018·Animals : an Open Access Journal From MDPI·Alexander J SchmithausenWolfgang Büscher
Dec 18, 2019·Animals : an Open Access Journal From MDPI·Gilles RenandDominique Dozias
Oct 24, 2019·Animals : an Open Access Journal From MDPI·Philip C GarnsworthyTianhai Yan
Oct 8, 2018·Journal of Dairy Science·L ZetouniP Løvendahl
Aug 25, 2019·Animals : an Open Access Journal From MDPI·Jagoba ReyIdoia Goiri
Jul 25, 2019·Journal of Animal Science and Technology·Mahfuzul Islam, Sang-Suk Lee
Nov 3, 2020·Journal of Dairy Science·Degong PangSophie Krizsan
Mar 6, 2021·Journal of Dairy Science·Pekka HuhtanenAbdulai Guinguina
Mar 7, 2021·Animals : an Open Access Journal From MDPI·Peter J MoateS Richard O Williams

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.