Valor nutritivo e perdas fermentativas da silagem de milho submetida a diferentes períodos de desensilagem

Abstract

This study aims to evaluate the nutritional value and as fermentative losses of the silage of corn cultivars submitted to different periods of desensilation. The study was carried out in a land area of the Cooperativa Languiru, and the data collection took place from September 2020 to January 2021. Silages of four corn cultivars were analyzed: Pioneer P 2770 VYHR, Forseed 533 PWU, Morgan 300 PWU and Syngenta NK 488 VIP 3; and different periods of desensilation: three (21 days), five (35 days), seven (49 days), nine (63 days) and 11 (77 days) weeks, in a completely randomized design and three replicates per treatment. The data were found in the analysis of variance (ANOVA) and regression, with the means compared by the Tukey test, at 5% probability. The results showed that an analysis of dry matter loss of Pioneer P2770 VYHR, Forseed 533 and Syngenta NK 488 VIP3 corn cultivars were the only parameters that dissipated, with averages, respectively, 18.73%, 12.84% and 14, 19%. The desensilization of corn silage in 21, 35, 49, 63 and 77 days does not alter the bromatological and fermentative quality of corn silage.