The Effects of Various Antifungal Additives on the Fermentation and Aerobic Stability of Corn Silage

Abstract

In 2 consecutive years, whole plant corn was ensiled in laboratory silos to investigate the effects of various silage additives on fermentation, dry matter (DM) recovery and aerobic stability. In yr 1, chopped forage was treated with 1) no additive (untreated, U), 2) Lactobacillus buchneri 40788, 4 x 10(5) cfu/g of fresh forage (LLB4), 3) L. buchneri 11A44, 1 x 10(5) cfu/g (PLB), 4) Biomax 5 (Lactobacillus plantarum PA-28 and K-270), 1 x 10(5) cfu/g (B5), 5) Silo Guard II (sodium metabisulfite and amylase), 0.05% of fresh forage weight (SG), 6) a buffered propionic acid-based additive, 0.1% (Ki-112), 7), sodium benzoate, 0.1% of fresh weight (SB), or 8) potassium sorbate:EDTA (1:1), 0.1% of fresh weight (PSE). Silage treated with LLB4 had the highest concentration of acetic acid compared with other treatments, and yeasts were undetectable in LLB4 (<log2 cfu/g). Silages treated with SB and PSE had the highest concentrations of water-soluble carbohydrates, the greatest recoveries of DM, and the lowest concentrations of ethanol. Silages treated with B5, SG, and Ki-112 had no effects on fermentation, DM recovery, or aerobic stability. The aerobic stabilities of silages treated with LLB4, SB, and PSE were greatest among all treatments. In yr 2, treatments were: 1) U, 2) LLB4, 3) PLB, 4) PLB at 4 x 10(5) cfu/g (PLB4), and 5) B5. Silages treated with L. buchneri had greater concentrations of acetic acid but lower concentrations of ethanol than did U- and B5-treated silages. Yeasts were undetected in all silages except in silage treated with B5, which had the poorest aerobic stability of all treatments. Treatments had no effect on DM recovery. Silages treated with PLB, PLB4, and LLB4 remained stable for >210 h.

Effects of biological and chemical additives on fermentation progress in maize silage

“…The WSC concentrations were higher (P < 0.05) in CH compared to C and B at days 3, 5, 10, and 90 of fermentation. As with our study, treating maize silages with the chemical-based additives has been shown to increase residual WSC concentrations, thus suggesting partial inhibition of fermentation (Kleinschmitt et al 2005;Da Silva et al 2015). The WSC which remain in silages that have undergone restricted fermentations constitute a potential source of readily available substrate for the growth of aerobic microflora when the silages are exposed to air during the feed-out period (Wilkinson and Davies 2013).…”

Fermentation and aerobic stability of corn silage inoculated with Lactobacillus buchneri

“…The aerobic stability was improved in all treated silages due to the low number of yeast in these silages, as reported by Muck (2010) when L. buchneri was used. Driehuis et al (1999), Ranjit & Kung Jr. (2000), Nishino et al (2003) and Kleinschmit et al (2005) reported an improvement in the aerobic stability cof corn silage inoculated with ≥1×10 6 cfu of L. buchneri 40778/g. Ranjit et al (2002) found improved aerobic stability in corn silage inoculated with 1×10 5 , 2.5×10 5 , 5×10 5 or 1×10 6 cfu of L. buchneri 40778/g, but in silages with higher doses (5×10 5 and 1×10 6 cfu/g), the temperature did not increase for 572 hours.…”

Características de silagens de milho inoculadas com Lactobacillus Buchneri e L. plantarum

“…A inoculação das silagens com a combinação das BAL promoveu acréscimo na concentração do ácido acético, o que está de acordo com os resultados observados por outros pesquisadores que utilizaram BAL heterofermentativas e homofermentativas associadas (Filya, 2003;Filya et al, 2006;Kleinschmit et al, 2005). Isto ocorre devido ao L. buchneri converter hexoses em ácido lático, ácido acético, CO 2 e água (McDonald et al, 1991).…”