Abstract

RIVAS-MARTINEZ, Mayra Iliana et al. In vitro methane production and fermentative characteristics from temperate and tropical grasses. Ecosistemas y recur. agropecuarios [online]. 2023, vol.10, n.1, e3393.  Epub Aug 04, 2023. ISSN 2007-901X.  https://doi.org/10.19136/era.a10n1.3393.

The objective of this research was to evaluate in vitro methane (CH4) production, carbon dioxide (CO2), and fermentative variables from template and tropical grasses: The experiment was designed as a randomized complete design, CH4 and CO2 were higher in tropical grasses (199.20, 55.78, and 121.58 mL g Dry matter, DM) compared template grasses (61.87, 26.6 and 52.9 mL g DM-1 respectively). Volatile fatty acid production was highest (P < 0,05) from template grasses. However, acetic acid production considered a precursor to CH4 was mayor from tropical grass. pH and total bacteria population were similar by grasses. The conclusions were: evaluated tropical grasses increased the biogas production per gram of dry matter fermented and acetic acid amount and consequently the methane production was incremented.

Keywords : Enteric fermentation; climate-smart livestock; greenhouse gases; ruminants.