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Interpretive Summary: Feeding 3-nitrooxypropanol reduces methane emissions by feedlot cattle on tropical conditions

By: Tiago L R Araújo, Carlos H S Rabelo, Abmael S Cardoso, Victor V Carvalho, Tiago S Acedo, Luis F M Tamassia, Guilherme S F M Vasconcelos, Stephane M Duval, Maik Kindermann, Vinicius N Gouvea, Marcia H M R Fernandes, and Ricardo A Reis

During fiber digestion in the rumen, enteric methane is produced. Methane is a potent greenhouse gas. Recently several studies have focused on developing synthetic compounds and their utilization as specific inhibitors of methanogenesis. 3-Nitrooxypropanol is a structural compound that can help to mitigate CH4 emissions. The objective of this study was to evaluate the effects of feeding 3-nitrooxypropanol (3-NOP; Bovaer, DSM Nutritional Products) at two levels on methane emissions, nitrogen balance, and performance by feedlot cattle. No effect of 3-NOP on animal performance and N balance was found. However, regarding CH4 production 3-NOP consistently decreased (P < 0.001) animals’ CH4 emissions (g/d; ~49.3%), methane yield (CH4/dry matter intake; ~40.7%), and CH4 intensity (CH4/average daily gain; ~38.6%). This study provides information on the potential role of 3-NOP on reducing CH4 emissions from feedlot cattle without reducing animal performance.

Read the full article in the Journal of Animal Science.