Seasonal Influence on Rumen Microbiota, Rumen Fermentation, and Enteric Methane Emissions of Holstein and Jersey Steers under the Same Total Mixed Ration.

ABSTRACT: Seasonal effects on rumen microbiome and enteric methane (CH₄) emissions are poorly documented. In this study, 6 Holstein and 6 Jersey steers were fed the same total mixed ration diet during winter, spring, and summer seasons under a 2 × 3 factorial arrangement for 30 days per season. The dry matter intake (DMI), rumen fermentation characteristics, enteric CH₄ emissions and rumen microbiota were analyzed. Holstein had higher total DMI than Jersey steers regardless of season. However, Holstein steers had the lowest metabolic DMI during summer, while Jersey steers had the lowest total DMI during winter. Jersey steers had higher CH₄ yields and intensities than Holstein steers regardless of season. The pH was decreased, while ammonia nitrogen concentration was

SUBMITTER: Islam M 

PROVIDER: S-EPMC8074768 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature