Genetic parameters of mid-infrared methane predictions and their relationships with milk production traits in Holstein cattle

Journal of Dairy Science
P B KandelH Soyeurt

Abstract

Many countries have pledged to reduce greenhouse gases. In this context, the dairy sector is one of the identified sectors to adapt production circumstances to address socio-environmental constraints due to its large carbon footprint related to CH4 emission. This study aimed mainly to estimate (1) the genetic parameters of 2 milk mid-infrared-based CH4 proxies [predicted daily CH4 emission (PME, g/d), and log-transformed predicted CH4 intensity (LMI)] and (2) their genetic correlations with milk production traits [milk (MY), fat (FY), and protein (PY) yields] from first- and second-parity Holstein cows. A total of 336,126 and 231,400 mid-infrared CH4 phenotypes were collected from 56,957 and 34,992 first- and second-parity cows, respectively. The PME increased from the first to the second lactation (433 vs. 453 g/d) and the LMI decreased (2.93 vs. 2.86). We used 20 bivariate random regression test-day models to estimate the variance components. Moderate heritability values were observed for both CH4 traits, and those values decreased slightly from the first to the second lactation (0.25 ± 0.01 and 0.22 ± 0.01 for PME; 0.18 ± 0.01 and 0.17 ± 0.02 for LMI). Lactation phenotypic and genetic correlations were negative between PME a...Continue Reading

References

Mar 1, 2010·Animal : an International Journal of Animal Bioscience·E WallD Moran
May 23, 2012·Journal of Dairy Science·P C GarnsworthyN Saunders
Oct 4, 2012·Animal : an International Journal of Animal Bioscience·F DeharengP Dardenne
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May 18, 2016·Global Change Biology·Eva WollenbergBruce M Campbell

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Citations

Dec 13, 2016·Journal of Dairy Science·Y de HaasJ Lassen
Jul 11, 2018·Animal : an International Journal of Animal Bioscience·C GreletF Dehareng
May 16, 2020·Animal Science Journal = Nihon Chikusan Gakkaihō·Yoshinobu UemotoFuminori Terada
Apr 24, 2020·Journal of Animal Science and Biotechnology·K M TipladyD J Garrick
Nov 23, 2020·Journal of the Science of Food and Agriculture·Amélie VanlierdeHélène Soyeurt
May 19, 2021·Journal of Dairy Science·C I V Manzanilla-PechJ Lassen

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