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Ciência Rural

Print version ISSN 0103-8478

Abstract

RABELO, Carlos Henrique Silveira et al. Corn silage inoculated with lactic acid bacteria in different maturity stages: fermentative losses, chemical composition and in vitro digestibility. Cienc. Rural [online]. 2014, vol.44, n.2, pp.368-373. ISSN 0103-8478.  http://dx.doi.org/10.1590/S0103-84782014000200028.

The aim of this study was to evaluate the fermentative losses, chemical composition and in vitro organic matter digestibility of corn silages produced in different maturity stages microbiologically inoculated. Two commercial inoculants were applied in the silages produced in stages SLL, 1/3 LL, 1/2 LL, 2/3 LL and CN, remaining an uninoculated treatment (control silage), illustrating a factorial scheme 3 x 5. The lactic acid bacteria (LAB) inoculation resulted in lower fermentative losses (P=0.0348), whereas silages produced with dried plants present lower DM losses (P<0.01). Because of inoculant application, there was higher concentrations of CP in the silages produced in stages SLL, 2/3 LL and CN (P=0.0033) and concentration lower of NDF (P=0.0140) in CN stage because of the Maize All® inoculant. This inoculant provided increase in the IVOMD coefficients when the plants were harvested with 2/3 LL and CN (P= 0.0006). Fermentative losses decreased because of the use of microbial inoculants, and this fact it is also observed in silages produced with dried plants. Application of lactic acid bacteria (Maize All® inoculant) in corn silages produced with plants harvested in more advanced stages of maturity improve the chemical composition and in vitro digestibility.

Keywords : Lactobacillus plantarum; milk line; Pediococcus spp.

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