Genetic (co-)variation of methane emissions, efficiency, and production traits in danish holstein cattle along and across lactations

HIGHLIGHTS

SUMMARY

    This reduction from MeC records to MeP records is due to the lack Manzanilla-Pech et_al: GENETIC CORRELATIONS OF METHANE EMISSIONS ACROSS LACTATIONS of ECM or BW, traits that are needed in the calculation of MeP. [2] Second, CH4 in liters per day was converted to CH4 in grams per day using the formula MeP (CH4 g/d)=density × CH4 (L/d), where the density of CH4 at 20°C=0.668 g/L. Given that the traits would be analyzed by random regression, the analyses were performed per trait per lactation (L1 and . . .

     

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