1. A técnica do gás traçador SF6 para medir CH4 ruminal pode ser
utilizada nas condições brasileiras de campo.
2. A emissão de CH4 por bovinos sem restrição de alimentos baseados
em forrageiras tropicais é superior à de bovinos alimentados com
forrageiras de clima temperado.
3. Forrageiras de baixa qualidade têm a taxa de ingestão reduzida e,
consequentemente, reduzem a taxa de emissão de CH4 por bovinos.
4. Animais zebuínos podem gerar mais CH4 que bovinos de sangue
Table 1. Enteric methane mitigation potential of feed additives and feeding strategies Category
Potential enteric methane mitigating effect1
Bromochloromethane and 2-bromo-ethane sulfonate High
Fumaric and malic acids No effect to High
Plant bioactive compounds
Tannins (condensed) Low
Essential oils Low?
Exogenous enzymes Low
Manipulation of rumen archaea and bacteria Low
Dietary lipids Medium
Inclusion of concentrate feeds Low to Medium
Improving forage quality Low to Medium
Grazing management Low
Feed processing Low
Mixed rations and feeding frequency ?
Processing and supplementation of low-quality feeds
Macro-supplementation (when deficient) Medium
Alkaline treatment Low
Biological treatment ?
Breeding for straw quality Low
Precision/balanced feeding and feed analyses Low to Medium
? A question mark indicates uncertainty due to limited research, variable results, or lack/insufficient data on persistency of the effect.
1High = ≥ 30 percent mitigating effect; Medium = 10 to 30 percent mitigating effect; Low = ≤ 10 percent mitigating effect. Mitigating effects refer to percent change
over a “standard practice”, i.e. study control that was used for comparison. It is noted that most data used in this analysis are from short-term experiments. For most
FONTE: Nutritional and
to Mitigate Animal
Alexander N. Hristov,
Joonpyo Oh, Chanhee Lee,
Robert Meinen, Felipe
Montes, Troy Ott, Jeff
Firkins, Al Rotz, Curtis
Dell, Adegbola Adesogan,
WenZhu Yang, Juan
Tricarico, Ermias Kebreab,
Garry Waghorn, Jan
Dijkstra, Simon Oosting,
Pierre J. Gerber, Benjamin
Henderson, and Harinder