Estimates of the genetic contribution to methane emission in dairy cows: a meta-analysis.

ABSTRACT: The present study aimed to perform a meta-analysis using the three-level model to integrate published estimates of genetic parameters for methane emission traits [methane yield (METY), methane intensity (METINT), and methane production (METP)] in dairy cows. Overall, 40 heritability estimates and 32 genetic correlations from 17 papers published between 2015 and 2021 were used in this study. The heritability estimates for METY, METINT, and METP were 0.244, 0.180, and 0.211, respectively. The genetic correlation estimates between METY and METINT with corrected milk yield for fat, protein, and or energy (CMY) were negative (- 0.433 and - 0.262, respectively). Also, genetic correlation estimates between METINT with milk fat and protein percentages were 0.254 and 0.334, respectively. Although t

SUBMITTER: Ghavi Hossein-Zadeh N 

PROVIDER: S-EPMC9296463 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature