CHEMICAL COMPOSITION, MINERAL CONTENT, IN VITRO GAS PRODUCTION AND RELATIVE FEED VALUE OF STEVIA REBAUDIANA BERTONI

Authors

  • MARIYA GERDZHIKOVA Trakia University, Faculty of Agriculture, BG-6000 Stara Zagora, Bulgaria Author
  • DIMITAR PAVLOV Trakia University, Faculty of Agriculture, BG-6000 Stara Zagora, Bulgaria Author
  • NELI GROZEVA Trakia University, Faculty of Agriculture, BG-6000 Stara Zagora, Bulgaria Author
  • MILENA TZANOVA Trakia University, Faculty of Agriculture, BG-6000 Stara Zagora, Bulgaria Author
  • DIMAN DIMANOV Trakia University, Faculty of Agriculture, BG-6000 Stara Zagora, Bulgaria Author
  • SVETOSLAVA TERZIEVA Trakia University, Faculty of Agriculture, BG-6000 Stara Zagora, Bulgaria Author
  • JIVKO KRASTANOV Institute of Agriculture, BG-6000 Stara Zagora, Bulgaria Author

Keywords:

Stevia rebaudiana, chemical composition, mineral content, detergent fibre, in vitro gas production, relative feed value

Abstract

The aim of present study was to determine the chemical composition, digestibility, gas production, energy nutrition, relative feed value, and the use of S. rebaudiana as a forage crop. The chemical composition and mineral content of biomass from Stevia rebaudiana Bertoni were determined. The average crude protein content in the biomass was 86.33 g/kg of dry matter (DM); crude fat – 11.79 g/kg DM; crude fibre – 284.68 g/kg DM; ash – 96.56 g/kg DM and nitrogen free extracts (NFE) – 520.64 g/kg DM. The mineral content in the biomass of S. rebaudiana was similar to that of meadow grasses. Structural fibre components were on average for neutral detergent fibre (NDF) 35.52% and acid detergent fibre (ADF) 31.18% which are close to that of alfalfa and legume grasses. New data were obtained concerning in vitro gas production of S. rebaudiana biomass at 24 hour  period – it was 225.83 dm/ml average, and at 48 hour period – 246.70 dm/ml (CO2 and CH4), which is close to the group of legume and cereal meadow grasses. The relative feed value (RFV) of S. rebaudiana biomass is close to that of perennial legumes. Regression equations were developed for advanced determination of: the quantity of metabolizable energy (ME), through the gas production at 24 hour period; and the relative feed value (RFV) and acid detergent fibre through the neutral detergent fibre.

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Published

26.12.2018

Issue

Vol. 24 No. Supplement 1 (2018): Bulgarian Journal of Agricultural Science

Section

Plant Science

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How to Cite

GERDZHIKOVA, M., PAVLOV, D., GROZEVA, N., TZANOVA, M., DIMANOV, D., TERZIEVA, S., & KRASTANOV, J. (2018). CHEMICAL COMPOSITION, MINERAL CONTENT, IN VITRO GAS PRODUCTION AND RELATIVE FEED VALUE OF STEVIA REBAUDIANA BERTONI. Bulgarian Journal of Agricultural Science, 24(Supplement 1), 40–46. https://agriacad.eu/ojs/index.php/bjas/article/view/5023