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Full-Text Articles in Genetics and Genomics
Genetic Evaluation Of Enteric Methane For Sustainable Irish Beef Cattle, Clodagh Ryan
Genetic Evaluation Of Enteric Methane For Sustainable Irish Beef Cattle, Clodagh Ryan
ORBioM (Open Research BioSciences Meeting)
Background:
Globally, livestock agriculture significantly contributes to human-induced greenhouse gas emissions, particularly through methane production. A potential approach to effectively, durably, and progressively reduce enteric methane emissions at a reasonable cost is through animal breeding.
Methods:
Individual animal methane records were available from 1,508 multi-breed growing beef cattle using GreenFeed Emission Monitoring systems. The objective of this study was to derive genetic parameters for a series of definitions of enteric methane, carbon dioxide, and dry matter intake (DMI). Estimated breeding values (EBVs) were generated for nine alternative definitions of enteric methane and EBVs were validated against phenotypic performance (adjusted for …
Clearing The Air Between Methane And Commercial Beef Cattle In Ireland, Clodagh V. Ryan
Clearing The Air Between Methane And Commercial Beef Cattle In Ireland, Clodagh V. Ryan
ORBioM (Open Research BioSciences Meeting)
Background
Rumen methanogenesis is the single most significant source of anthropogenic methane (CH4) emissions. This research aimed to analyse CH4 data recorded by GreenFeed systems by assessing the repeatability of such phenotypic measures, estimating the heritability of CH4, and generating CH4 estimated breeding values (EBVs) for inclusion in the national breeding index.
Methods
CH4 measurements were recorded on 979 cattle for 20 to 83 days using GreenFeed machines, resulting in 211,136 individual CH4 observations. The phenotypic repeatability of CH4 was estimated for six different averaging periods using a linear mixed …