Resumen:
The effect of equine fecal inocula on the in vitro gas,methane (CH4), and carbon dioxide (CO2) productionwas
elucidated in the present study. Fecal inoculawere obtained fromfour Azteca horses (aged 5e8 years, 480 ±
20.1 kg). In vitro fermentation (up to 48 hours) was performed with substrate consisting of 50% (w/w) oat
straw and 50% (w/w) of a commercial concentrate in the presence of a commercial Lactobacillus farciminis
product (0e6 mg/g DMof substrate). Incorporation of L. farciminis resulted in increased levels of asymptotic
gas (GP), CH4, and CO2 production (P < .05).
Descripción:
The lag time and the rate of GP were shown to be independent
fromL. farciminis addition (linear, P>.05; quadric, P>.05). Furthermore, a slight reduction in fermentationpH
(linear, P ¼ .029) and higher metabolizable energy values (P ¼ .001) were obtained with L. farciminis supplementation
in a dose-dependent manner. No significant impact of L. farciminis on dry matter degradability
values was estimated (P > .05). In vitro gas, CH4, and CO2 productionwere increased (linear, P .001) in the
presence of L. farciminis from6 hours of incubation onward. In conclusion, addition of L. farciminis at a dosedependent
manner (2e6 mg/g DM of diet) was observed to be persuasive in terms of attaining amicable
hindgut fermentationbyimprovingfecalgas kinetics viz.gas,CH4, andCO2 productionwithout any side effect