Prediction of enteric methane emissions from lactating cows using methane to carbon dioxide ratio in the breath.

ABSTRACT: The aim of this study was to develop prediction equations for methane (CH₄ ) emissions from lactating cows using the CH₄ /carbon dioxide (CO₂ ) ratio in the breath measured in the automatic milking system (AMS) and to evaluate the predicted values and factors affecting the CH₄ /CO₂ ratio. The model development was conducted using a dataset determined in respiration chambers or head boxes (n = 121). Then, gas measurements in the AMS as well as in the head box were carried out with six lactating cows fed one of three different levels of neutral detergent fiber (NDF) content, following a 3 × 3 Latin square experimental design. The obtained equation that is suitable for practical use on farms to predict CH₄ was CH₄ (L

SUBMITTER: Suzuki T 

PROVIDER: S-EPMC9285552 | biostudies-literature | 2021 Jan-Dec

REPOSITORIES: biostudies-literature