Relationships between enteric methane emission, nutrient digestibility, and production efficiency in lactating dairy cows: a meta-regression.

MARTINS, L. F.; STEPANCHENKO, N.; BANNINK, A.; BENCHAAR, C.; BRITO, A. F.; CAJARVILLE, C.; CAMPOS, M. M.; CARROLL, A. L.; COLOMBINI, S.; CONGIO, G. F. S.; CROMPTON, L.; SILVA, S. C. da; DELLA ROSA, M. M.; DIJKSTRA, J.; DONG, L.; EUGÈNE, M.; FANT, P.; GIAGNONI, G.; GOOSSENS, K.; HUHTANEN, P.; JONKER, A.; KEBREAB, E.; KONONOFF, P. J.; KREUZER, M.; LUND, P.; MAIGAARD, M.; MARTIN, C.; MAURÍCIO, R. M.; MELO, G. D.; MOURA, A. M.; MUÑOZ, C.; NIU, M.; PAZ TIERI, M.; PEIREN, N.; QIYU, D.; RAMIN, M.; RAUCH, R.; REYNOLDS, C. K.; RICCI, P.; RYTZ, A.; SANTOS, F. A. P.; SILVA, A. L.; TOMICH, T. R.; VAN GASTELEN, S.; VANDAELE, L.; WANG, M.; WEISBJERG, M. R.; WILLIAMS, S. R. O.; YAN, T.; HRISTOV, A. N.

Relationships between enteric methane emission, nutrient digestibility, and production efficiency in lactating dairy cows: a meta-regression.

Autores

Descripción

Interest in selecting cows for low enteric CH4 emission has raised concerns about potential tradeoffs with nutrient digestibility and lactational performance. The objective was to quantify relationships among enteric CH4 emission, production variables, and nutrient digestibility in dairy cows. Individual cow data (n = 5,146) from 163 studies were compiled. Cows averaged (mean ± SD) 22.7 ± 4.8 kg/d DMI, 32.5 ± 8.3 kg/d ECM, and 597 ± 109 kg BW. Response variables were daily enteric CH4 production (CH4P; g/d), CH4 yield (CH4Y; g/kg DMI), and CH4 intensity (CH4I; g/kg ECM).
Supplement 1. Edição dos abstracts do Annual Meeting of American Dairy Science Association, Milwaukee, Wisconsin, 2026.