Emission of Greenhouse Gases and Ammonia from the Excreta of Nellore Bulls Submitted to Energy and Tannin Supplementation

Animal supplementation during the background phase may increase greenhouse gas emissions (GHG). The inclusion of tannins in diet Nellore bulls can mitigate nitrous oxide (N2O), methane (CH4), and ammonia (NH3) production. objective this study was to quantify effect energy associated with sources young backgrounded pastures N2O, CH4, NH3 emissions. Two experiments were conducted a completely randomized design. treatments three strategies: (1) soybean hulls 0.3% body weight (BW), (2) sorghum grain BW, (3) peanut peel last two being tannin. static closed chambers method used N2O CH4 semi-open chamber technique estimate volatilization. Supplementation strategies did not affect (p = 0.9116). soil water-filled pore space explained variation fluxes 0.0071). change total 0.3599), no explanatory variable correlated fluxes. volatilization vary according supplements or tannin 0.5170). However, type excreta affected < 0.0001). Ammonia averaged 14.05, 4.16, 2.25% applied N for urine, urine + dung, respectively. energetic containing evaluated dosages mitigation strategy NH3.