Published in Scientific Papers. Series A. Agronomy, Vol. LXVII, Issue 1
Written by Victor ŢÎŢEI, Andreea ANDREOIU, Sergiu COŞMAN, Vasile BLAJ, Ana GUŢU, Teodor MARUȘCA, Valentina COŞMAN
The quality of areal biomass of the local ecotype of common comfrey - Symphytum officinale - grown in the experimental plot of the National Botanical Garden (Institute), Chişinău, Republic of Moldova, was evaluated. The results revealed that the nutrient content of the Symphytum officinale whole plants harvested in the flowering period was characterized by the following indices: 186 g/kg CP, 129 g/kg ash, 217 g/kg CF, 278 g/kg ADF, 449 g/kg NDF, 35 g/kg ADL, 224 g/kg Cel, 171 g/kg HC and 160 g/kg TSS with 672 g/kg DDM, RFV = 139, 13.16 MJ/kg DE, 10.80 MJ/kg ME and 6.83 MJ/kg NEl. The prepared comfrey silage had pleasant smell and color, pH = 4.10, 38.2 g/kg lactic acid, 6.4 g/kg acetic acid and butyric acid were not detected. The silage dry matter nutrient content was 17.19% CP, 2.17% EE, 21.57% CF, 45.88% NFE, 1.82% starch, 0.86% soluble sugars, 13.18% ash, 0.89% Ca and 0.39% P. The biochemical methane potential of comfrey green mass substrate 362 l/kg.
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