[en] Phenotypes have been reviewed to select for lower-emitting animals in order to decrease the environmental footprint of dairy cattle products. This includes direct selection for breath measurements, as well as indirect selection via indicator traits such as feed intake, milk spectral data, and rumen microbial communities. Many of these traits are expensive or difficult to record, or both, but with genomic selection, inclusion of methane emission as a breeding goal trait is feasible, even with a limited number of registrations. At present, methane emission is not included among breeding goals for dairy cattle worldwide. There is no incentive to include enteric methane in breeding goals, although global warming and the release of greenhouse gases is a much-debated political topic. However, if selection for reduced methane emission became a reality, there would be limited consensus as to which phenotype to select for: methane in liters per day or grams per day, methane in liters per kilogram of energy-corrected milk or dry matter intake, or a residual methane phenotype, where methane production is corrected for milk production and the weight of the cow. We have reviewed the advantages and disadvantages of these traits, and discuss the methods for selection and consequences for these phenotypes.
Disciplines :
Genetics & genetic processes Animal production & animal husbandry
Author, co-author :
de Haas, Yvette; Wageningen UR Livestock Research
Pszczola, Marcin; Poznan University of Life Sciences
Soyeurt, Hélène ; Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Modélisation et développement
Wall, Eilleen; Scotland's Rural College - SRUC
Lassen, Jan; Aarhus University
Language :
English
Title :
Invited review: Phenotypes to genetically reduce greenhouse gas emissions in dairying
Alternative titles :
Phénotypes pour réduire génétiquement les émissions de méthane des vaches laitières
Publication date :
2017
Journal title :
Journal of Dairy Science
ISSN :
0022-0302
eISSN :
1525-3198
Publisher :
American Dairy Science Association, Champaign, United States - Illinois
Volume :
100
Issue :
2
Pages :
855-870
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Methagene
Funders :
COST - European Cooperation in Science and Technology
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