No differences were found in ADG, carcass quality, strip loin proximate analysis and shear force, or consumer taste preferences. Carbon dioxide (CO 2) yield (g CO 2/DMI) increased 13.7% between Control and High treatments (P = 0.03). Hydrogen (H 2) yield (g H 2/DMI) increased ( P <0.01) 336 and 590% compared to Control for the Low and High treatments, respectively. Supplementing low forage TMR reduced CH 4 yield 69.8% ( P <0.01) for Low and 80% ( P <0.01) for High treatments. However, there was an interaction between TMR type and the magnitude of CH 4 yield reduction. The Low and High treatments over 147 days reduced enteric CH 4 yield 45 and 68%, respectively. Steers were fed 3 diets: high, medium, and low forage total mixed ration (TMR) representing life-stage diets of growing beef steers. taxiformis inclusion based on organic matter intake. Twenty-one Angus-Hereford beef steers were randomly allocated to one of three treatment groups: 0% (Control), 0.25% (Low), and 0.5% (High) A. The objective of this study was to determine the effect of Asparagopsis taxiformis on CH 4 production (g/day per animal), yield (g CH 4/kg dry matter intake (DMI)), and intensity (g CH 4/kg ADG) average daily gain (ADG kg gain/day), feed conversion efficiency (FCE kg ADG/kg DMI), and carcass and meat quality in growing beef steers. has shown to reduce ruminant enteric methane (CH 4) production up to 99% in vitro. The red macroalgae (seaweed) Asparagopsis spp.
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