Artículos de revistas
The use of crude glycerin as an alternative to reduce fermentation losses and enhance the nutritional value of Piata grass silage
Fecha
2017-08-01Registro en:
Revista Brasileira De Zootecnia-brazilian Journal Of Animal Science. Vicosa-mg: Revista Brasileira Zootecnia Brazilian Journal Animal Sci, v. 46, n. 8, p. 638-644, 2017.
1806-9290
10.1590/S1806-92902017000800002
S1516-35982017000800638
WOS:000413740200002
S1516-35982017000800638.pdf
Autor
Fundacao Univ Fed Grande Dourados
Univ Nacl Asuncion
Universidade Estadual Paulista (Unesp)
Institución
Resumen
The objective of this study was to evaluate fermentation losses and the nutritional value of silage of Brachiaria brizantha cv BRS Piata ensiled with different levels of crude glycerin. The experiment followed a 4 x 2 completely randomized factorial design with four doses of crude glycerin (0, 100, 200, and 300 g kg(-1) of DM silage) and two cutting ages (45 and 60 days) with four replicates per treatment (silos). The parameters of dry matter losses, effluents losses, gas losses, pH, microbial population, and nutritional value of the silage were evaluated. There was no difference in pH among the tested doses of crude glycerin. However, reductions in dry matter and gas losses were observed as a function of crude glycerin doses. Bacterial populations of lactic acid and facultative mesophilic anaerobes also increased as a function of crude glycerin inclusion. Crude glycerin increased ether extract levels and reduced neutral detergent fiber and acid detergent fiber concentrations (dilution effect), improving chemical composition of the silage. Crude glycerin can be used in the ensiling of Piata grass and the dose of 300 g kg(-1) of DM yields the best results.