The Effect of Treating Whole-Plant Barley with Lactobacillus buchneri 40788 on Silage Fermentation, Aerobic Stability, and Nutritive Value for Dairy Cows

Abstract

Chopped barley forage was ensiled untreated or treated with several doses (1 x 10(5) to 1 x 10(6) cfu/g of fresh forage) of Lactobacillus buchneri 40788 in laboratory silos and untreated or treated (4 x 10(5) cfu/g) in a farm silo. Silage from the farm silos was fed to lactating cows. In the laboratory silo, the effects of inoculation on fermentation and aerobic stability were also compared to silage treated with a commercial inoculant and a buffered propionic acid additive. Inoculation with L. buchneri 40788 decreased the final concentrations of lactic acid but increased concentrations of acetic acid and ethanol in silage from laboratory and farm silos. Silages stored in laboratory silos did not heat after exposure to air for 7 d and were then mixed with alfalfa silage and a concentrate to form total mixed rations (TMR) that were further exposed to air. The TMR containing silages treated with L. buchneri 40788 or a buffered propionic-acid-based additive took longer to heat and spoil than the TMR containing untreated silage or silagetreated with the commercial inoculant. Silage stored in a farm silo and treated with L. buchneri 40788 had fewer yeasts and molds than did untreated silage. Aerobic stability was greater in treated silage alone and in a TMR containing treated silage. Dry matter intake (18.6 kg/d), milk production (25.7 kg/d), and milk composition did not differ between cows fed a TMR containinguntreated or treated silage. These findings show that L. buchneri can improve the aerobic stability of barley silage in laboratory and farm silos and that feeding treated silage had no negative effect on intake or performance.

Efeito do tratamento com aditivos químicos e inoculantes bacterianos nas perdas e na qualidade de silagens de cana-de-açúcar

“…Apesar de não ter sido detectada redução significativa na concentração de etanol, a redução das perdas indica que houve controle no desenvolvimento de leveduras na silagem inoculada com L. buchneri. A aplicação de L. buchneri tem resultado em silagens com 3,6 a 5,0% de ácido acético na MS Taylor et al, 2002). Concentração de 2% de ácido acético na MS, equivalente a 6,7 g do ácido por litro da fase líquida de uma forragem com 25% de MS, é suficiente para o controle de leveduras, visto que leveduras são normalmente controladas por concentrações de ácido acético superiores a 5,6 g/L do meio de cultura (94 mmol/L) (Woolford, 1975).…”

Performance of Holstein heifers fed sugarcane silages treated with urea, sodium benzoate or Lactobacillus buchneri

“…The heterofermentative bacteria Lactobacillus buchneri converts lactic acid to acetic acid, 1,2 propanediol, propionic acid, CO 2 and traces of ethanol (Oude Elferink et al, 2001); acetic acid has a relatively high fungicidal effect. Inoculation with L. buchneri reduced yeast counts and improved aerobic stability in corn and high moisture corn silages (Ranjit & Kung Junior, 2000;Taylor et al, 2002). In sugarcane silages, inoculation with this bacteria reduced ethanol concentration and decreased DM loss (Pedroso, 2003).…”

Effects of Lactobacillus buchneri on the nutritive value of sugarcane silage for finishing beef bulls

“…Bulls fed TMR containing sugarcane silage inoculated with L. buchneri had higher DMI (P = 0.006; Table 4). Several studies have shown that when cattle or sheep are fed silages treated with L. buchneri, DMI is not affected (Driehuis et al, 1999;Taylor et al, 2002;Ranjit et al, 2002;Kung et al, 2003). However, in the present study, the inoculants were effective in mitigating NDF accumulation caused by sugar oxidation during the ensiling process and improved the DMI.…”