Inhibiting methane production in Brahman cattle by dietary supplementation with a novel compound and the effects on growth

摘要: Three experiments were conducted to determine the efiects of dietary supplementation with a novel antimethanogenic compound (AM) on methane production and growth in Brahman (Bos indicus) steers. The was chemical complex bromochloromethane (BCM) fi-cyclodextrin, which is chemically stable when added feed, thus overcoming highly volatile nature BCM. In these AM administered steers as mixture difierent feed supplements. Expt 1 efiect vivo feeding determined using conflnement-type respiration chamber. Methane AM-treated (0§2¢4 mL/min) lower ( P< 0 ¢001) than that control (205§5¢ 2 over 28 days. we treatment 12 weeks fed low quality roughage diet. most marked reduced ¢01) voluntary dry matter intake (DMI), acetate : propionate molar ratio (A P) rumen ∞uid. Average daily liveweight gain (ADG) (0¢22§0¢ 01 kg/day) (F G) (20¢7§1¢46 kg DMI/kg liveweight) not signiflcantly afiected by treatment. 3 10 medium diet, either treated or hormonal promotant (HGP; oestadiol 17fl). ¢05) DMI below AM, whereas HGP Both treatments separately A P had no signiflcant ADG, ADG HGP-treated higher (0¢ 76§0¢ 27 v. 0¢ 60§0¢ 027 kg/day). F G both those We conclude this enables potent properties BCM be realised under commercial conditions, prolonged use 10{12 associated an improved conversion e-ciency better diets.