Effects of homofermentative lactic acid bacteria and powdered molasses on fermentative losses, chemical composition and aerobic stability in whole-plant soybean silage

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Ghizzi, Lucas Ghedin ; Del Valle, Tiago Antonio ; Zilio, Elissandra Maiara de Castro ; Dias, Mauro Sergio da Silva ; Nunes, Alanne Tenorio ; Gheller, Larissa Schneider ; Silva, Tassia Barrera de Paula e ; Marques, Julia Avansi ; Grigoletto, Nathalia Trevisan Scognamiglio ; Takiya, Caio Seiti ; Renno, Francisco Palma

• Tipo de documento: Artigo Científico
• Fonte: NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH; v. N/A, p. 14-pg., 2022-08-10.

Resumo

This study evaluated the effects of homolactic bacteria and molasses (MOL) in whole-plant soybean silage on dry matter (DM) losses, content of organic acids, bromatological composition, in situ degradation of DM and aerobic stability. Mini-silos (n = 200) were blocked (n = 5) by phenological stage and assigned into a 2x2 factorial treatment arrangement with 2 levels of microbial inoculation (INO, 0 or 10(5) colony forming units of Lactobacillus plantarum and Pediococcus pentosaceus per kg of fresh forage) and 2 levels of powdered MOL (0 and 40 g/kg fresh forage). Mini-silos were opened after 90 days of fermentation. Total losses were lower in silos with MOL. Whole-plant soybean ensiled with the combination of INO and MOL had the highest DM recovery. Adding MOL increased lactic acid content and decreased ammonia nitrogen content (marker of proteolysis), pH and buffering capacity. MOL reduced the contents of NDF. Silage with both INO and MOL had the highest DM content. MOL increased DM degradation. No effects were detected on aerobic stability. INO does not show positive effects on soybean silage nutritive quality when not associated with MOL. Molasses has a positive impact on whole-plant soybean silage by decreasing fermentation losses and pH, while increasing silage nutritive value. (AU)

• Processo FAPESP: 16/23132-8 - Silagem de planta inteira de soja (Glycine max L. Merrill) na alimentação de vacas leiteiras
• Beneficiário: Lucas Ghedin Ghizzi
• Modalidade de apoio: Bolsas no Brasil - Doutorado