3-Nitrooxypropanol Decreased Enteric Methane Production From Growing Beef Cattle in a Commercial Feedlot: Implications for Sustainable Beef Cattle Production
نویسندگان
چکیده
Effects of the investigational methane (CH 4 ) inhibitor 3-nitrooxypropanol (3-NOP) on animal performance, health and enteric CH production beef cattle were evaluated in a commercial feedlot. Two concurrent studies conducted: large pen study (4,048 cattle, eight replicates per experimental group) to measure performance small (a subset 50 from study, n = 25 emissions. Within animals (body weight ± SD, 282 8 kg) assigned completely randomized design one two groups: control, fed backgrounding diet (70% corn or barley silage, 30% steam-flaked grain concentrate; dry matter (DM) basis) 3-NOP, containing 3-NOP. The treatment group was adapted 3-NOP (12 3 d) before receiving final target level 200 mg/kg DM, which for 108 d. Animals emissions received basal with dose increased every 28 d: low (150 DM; 1.27 g/d), medium (175 2.25 high (200 2.75 g/d). Intake pens monitored by electronic feeding bunks measured using GreenFeed system. In total gained, average daily gain, variables not affected but DM intake (DMI) tended decrease ( P 0.06) 2.6% relative control (8.07 kg/d), while gain:feed ratio be improved 2.5% (0.161 kg gain/kg DMI). consumption inclusion rate whereas DMI decreased 5.4% 0.02) compared (10.4 kg/d). On average, addition 0.001) (g/d) 25.7% yield (g /kg DMI) 21.7%. conclusion, supplementing improve feed efficiency feedlot no negative impacts health.
منابع مشابه
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ژورنال
عنوان ژورنال: Frontiers in animal science
سال: 2021
ISSN: ['2673-6225']
DOI: https://doi.org/10.3389/fanim.2021.641590