Encapsulated nitrate replacing soybean meal changes in vitro ruminal fermentation and methane production in diets differing in concentrate to forage ratio

Autor(es)

Natel, Andressa Santanna ^[1] ; Abdalla, Adibe Luiz ^[1] ; de Araujo, Rafael Canonenco ^[2] ; McManus, Concepta ^[3] ; Paim, Tiago do Prado ^[4] ; de Abdalla Filho, Adibe Luiz ^[1] ; Louvandini, Patricia ^[1] ; Nazato, Carina ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Ctr Nucl Energy Agr, Lab Anim Nutr, Piracicaba, SP - Brazil

^[2] Grasp Ind & Com LTDA, Div Res & Dev, Curitiba, Parana - Brazil

^[3] Univ Brasilia, Inst Biol, Brasilia, DF - Brazil

^[4] Inst Fed Goiano, Ipora, Go - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ANIMAL SCIENCE JOURNAL; v. 90, n. 10 AUG 2019.
• Citações Web of Science: 0

Resumo

The objective of this study was to evaluate the effects of using encapsulated nitrate product (ENP) replacing soybean meal in diets differing in concentrate to forage ratio on ruminal fermentation and methane production in vitro using a semi-automatic gas production technique. Eight treatments were used in a randomized complete design with a 2 x 4 factorial arrangement: two diet (20C:80F and 80C:20F concentrate to forage ratio) and four levels of ENP addition (0%, 1.5%, 3.0%, and 4.5% of DM) replacing soybean meal. There was a diet x ENP interaction (p = 0.02) for methane production. According to ENP addition, diets with 80C:20F showed more intense reduction on methane production that 20C:80F. A negative linear effect was observed for propionate production with ENP addition in diet with 80C:20F and to the relative abundance of methanogens Archaea, in both diet. The replacement of soybean meal by ENP in levels up to 3% of DM inhibited methane production due to a reduction in the methanogens community without affecting the organic matter degradability. However, ENP at 4.5% of DM level affected fiber degradability, abundance of cellulolytic bacteria, and propionic acid production, indicating that this level of inclusion is not recommended for ruminant production. (AU)

• Processo FAPESP: 12/02592-0 - Nitrato na dieta de ruminantes como estratégia nutricional para mitigação de metano entérico
• Beneficiário: Andressa Santanna Natel
• Modalidade de apoio: Bolsas no Brasil - Doutorado