Between-cow variation in milk fatty acids associated with methane production

J de Souza, H Leskinen, A L Lock, K J Shingfield and P Huhtanen

PLOS ONE, 2020, vol. 15, issue 8, 1-22

Abstract: We evaluated the between-cow (b-cow) variation and repeatability in omasal and milk fatty acids (FA) related to methane (CH4) emission. The dataset was originated from 9 studies with rumen-cannulated dairy cows conducted using either a switch-back or a Latin square design. Production of CH4 per mole of VFA (Y_CH4VFA) was calculated based on VFA stoichiometry. Experiment, diet within experiment, period within experiment, and cow within experiment were considered as random factors. Empirical models were developed between the variables of interest by univariate and bivariate mixed model regression analysis. The variation associated with diet was higher than the b-cow variation with low repeatability (

Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0235357

DOI: 10.1371/journal.pone.0235357

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