Effects of rumen undegradable protein sources on nitrous oxide, methane and ammonia emission from the manure of feedlot-finished cattle

Autor(es)

Coelho, Larissa de Melo ; Brito, Liziane de Figueiredo ; Messana, Juliana Duarte ; Cardoso, Abmael da Silva ; Carvalho, Geovany Macedo ; Santos Torres, Rodrigo de Nazare ; Carlos, Roberta Souto ; Malheiros, Euclides Braga ; Pessoa da Cruz, Mara Cristina ; Berchielli, Telma Teresinha

• Tipo de documento: Artigo Científico
• Fonte: SCIENTIFIC REPORTS; v. 12, n. 1, p. 15-pg., 2022-06-02.

Resumo

The effects of sources of rumen undegradable protein (RUP) in diets on methane (CH4), nitrous oxide (N2O) and ammonia (NH3) emissions from the manure of feedlot-finished cattle were evaluated. We hypothesized that the use of different RUP sources in diets would reduce N loss via urine and contribute to reduced N2O, CH4 and NH3 emissions to the environment. Nellore cattle received different diets (18 animals/treatment), including soybean meal (SM, RDP source), by-pass soybean meal (BSM, RUP source) and corn gluten meal (CGM, RUP source). The protein source did not affect the N and C concentration in urine, C concentration in feces, and N balance (P > 0.05). The RUP sources resulted in a higher N2O emission than the RDP source (P = 0.030), while BSM resulted in a higher N2O emission than CGM (P = 0.038) (SM = 633, BSM = 2521, and CGM = 1153 g ha(-2) N-N2O); however, there were no differences in CH4 and NH3 emission (P > 0.05). In conclusion, the use of RUP in diets did not affect N excretion of beef cattle or CH4 and NH3 emission from manure, but increased N2O emission from the manure. (AU)

• Processo FAPESP: 17/11274-5 - Decomposição de serrapilheira e emissão de gases de efeito estufa em pastos de Brachiaria adubados com doses crescentes de nitrogênio
• Beneficiário: Abmael da Silva Cardoso
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 16/22022-4 - Impacto da proteína metabolizável na produção de bovinos de corte e emissão de gases do efeito estufa
• Beneficiário: Telma Teresinha Berchielli
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 19/11864-2 - Emissão de gases de efeito estufa nas excretas de bovinos suplementados com proteína não-degradável no rúmen em sistema de confinamento
• Beneficiário: Larissa de Melo Coelho
• Modalidade de apoio: Bolsas no Brasil - Mestrado